A radiator spot welding device

Abstract

The utility model relates to spot welding device technical field, the utility model provides a kind of radiator spot welding device, for the multiple straight pipe sections of radiator elbow and radiator straight pipe spot welding together, including workbench, fixture and limit clamp block;Fixture and limit clamp block are all with two, fixture is used to clamp the butt joint position of outside radiator elbow straight pipe section and outside radiator straight pipe, limit clamp block is used to clamp middle butt joint position, the outer wall of limit clamp block is limited to face, limit face is used to cooperate with fixture to resist the outside butt joint position;In the present application, by fixture and limit clamp block fixed butt joint position, ensure that the axis is coaxial, use the mode of laser spot welding, improve the spot welding success rate, and then improve the yield of subsequent welding finished product.The spot welding device of the application solves the problem of repeatedly adjusting the position of the radiator straight pipe and the radiator elbow by manual, reduces the dependence on the skill proficiency of the operator, and improves the working efficiency of the device.

Description

Technical Field

[0001] This utility model relates to the field of spot welding device technology, specifically to a spot welding device for radiators. Background Technology

[0002] In the manufacturing process of radiators, welding is a crucial step in assembling the pipes and elbows. Currently, most existing technologies employ manual spot welding or traditional mechanical spot welding for radiator welding. However, due to the lack of precise positioning and alignment mechanisms, misalignment between the straight pipes and elbows frequently occurs during the welding process.

[0003] When the straight pipes and elbows of a heating system are not aligned, it not only leads to uneven stress distribution at the weld, reducing the overall structural strength of the radiator and shortening its lifespan, but it can also result in weak welds, such as incomplete or ineffective welds, causing leaks during use and severely impacting safety and heating efficiency. Furthermore, welding quality issues caused by misalignment significantly increase the product defect rate, raising production costs and reducing efficiency. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a spot welding device for radiators, which solves the technical problem that the axis of the through pipe and the radiator elbow is not aligned during radiator welding in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a spot welding device for radiators, used to spot weld multiple straight pipe sections of a radiator elbow to two outer straight radiator pipes and a middle straight radiator pipe, respectively, comprising: Workbench; The clamps are provided in two parts, both of which are slidably mounted on the worktable and located on the outer sides of the straight pipe section to be spot welded and the two outer heating straight pipes. The openings of the two clamps are arranged opposite to each other, and the clamps can clamp and align the docking position of the straight pipe section and the outer heating straight pipes. The limiting clamp has two parts, both of which can be detachably mounted on the worktable. The limiting clamp is used to clamp the connection position of the middle heating straight pipe and the straight pipe section. The outer wall of the limiting clamp has a limiting surface, which is used to cooperate with the clamp to press against the outer heating straight pipe.

[0006] Optional, also includes: A support plate is detachably mounted on the workbench. The support plate has several grooves, each groove corresponding to an outer heating pipe or a middle heating pipe. The grooves are used to limit and support the outer heating pipe and the middle heating pipe.

[0007] Optionally, the clamp is provided with a plurality of mounting slots, and a limiting post is detachably provided in the mounting slot. The limiting post corresponds one-to-one with the mounting slot. The limiting post is arranged along the axial direction of the outer heating straight pipe. Both ends of the limiting post extend to the outside of the clamp. The limiting post is used to assist in positioning the straight pipe section and the outer heating straight pipe so that the straight pipe section and the outer heating straight pipe are arranged coaxially.

[0008] Optionally, the worktable is provided with a sliding groove, and both clamps are slidably disposed in the sliding groove, and the clamps can slide along the sliding groove toward the docking position.

[0009] Optional, also includes: A limiting seat is provided on the workbench and is used to limit the movement of the heating elbow.

[0010] Optional, also includes: An air blowing assembly is slidably disposed on the worktable and located above the lifting plate. The air blowing assembly is used to blow inert gas toward the docking position.

[0011] Optional, the blowing assembly includes: A driver, the driver being disposed on one side of the top of the worktable; A connecting pipe is disposed on the movable end of the driver, one end of the connecting pipe is open and the other end is closed, and the connecting pipe is connected to a gas source storing inert gas; The nozzle has several nozzles, all of which are disposed on the connecting pipe and communicate with the connecting pipe. The nozzles are used to spray inert gas toward the docking position.

[0012] Optional, also includes: The frame has a slide rail on its top surface, and there are two worktables, at least one of which is slidably mounted on the slide rail. The two worktables can move closer to or further away from each other.

[0013] Optionally, the spot welding assembly includes: A column, which is mounted on the workbench; A support frame, which is mounted on the column; Mounting plate, which is vertically slidably mounted on the bracket; A welding device is mounted on the mounting plate and can move with the mounting plate to perform spot welding on the mating positions.

[0014] Optional, also includes: A sliding seat is slidably disposed within the sliding groove, and the clamp is detachably disposed on the sliding seat.

[0015] The beneficial effects of the embodiments of this utility model are as follows: This utility model provides a spot welding device for radiators that uses laser spot welding. It fixes the relative positions of the straight radiator pipe and the radiator elbow with clamps and limiting blocks, ensuring that their axes are coaxial. This avoids spot welding misalignment defects caused by axial deviation, improves the spot welding success rate, makes the weld point more evenly stressed, increases the yield of subsequent welding products, and reduces potential problems such as leakage and insufficient pressure bearing capacity caused by welding issues during later use. This spot welding device eliminates the need for repeated manual adjustments to the positions of the straight radiator pipe and the radiator elbow to achieve coaxiality, simplifying the welding operation process, reducing reliance on operator skill, improving work efficiency, and reducing rework caused by improper manual adjustments, thereby reducing production and time costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a radiator spot welding device in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the radiator spot welding device from another angle in the embodiment; Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 for Figure 1 A schematic diagram of the workbench structure in the embodiment; Figure 5 for Figure 1 A schematic diagram of the structure of the limiting seat in the embodiment; Figure 6 for Figure 1 A schematic diagram of the fixture structure in the embodiment; Figure 7 for Figure 1 A schematic diagram of the limiting clamping block in the embodiment; Figure 8 for Figure 1 A schematic diagram of the limiting clamp block at another angle in the embodiment; Figure 9for Figure 1 The embodiment shows a schematic diagram of the support plate structure.

[0018] In the diagram: 1. Workbench; 101. Slide groove; 2. Fixture; 201. Mounting groove; 3. Limiting clamp; 31. Limiting surface; 4. Lifting plate; 401. Groove; 5. Limiting post; 6. Limiting seat; 7. Air blowing assembly; 71. Driver; 72. Connecting pipe; 73. Nozzle; 8. Frame; 81. Slide rail; 9. Spot welding assembly; 91. Column; 92. Bracket; 93. Mounting plate; 94. Welder; 10. Sliding seat; 11. Heating elbow; 111. Straight pipe section; 12. Heating straight pipe; 1201. Middle heating straight pipe; 1202. Outer heating straight pipe. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0020] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] like Figures 1-9 As shown, it illustrates a radiator spot welding device in one embodiment of the present invention, used to spot weld multiple straight pipe sections 111 of the radiator elbow 11 to two outer radiator straight pipes 1202 and a middle radiator straight pipe 1201 respectively, including a workbench 1, a clamp 2 and a limiting clamp 3.

[0026] It should be noted that the spot welder is a laser spot welder. First, the laser generator produces a laser beam of a specific wavelength. After being guided and focused by the optical system, the laser energy is highly concentrated in a very small area of ​​action, forming an extremely high energy density. When the focused laser beam irradiates the spot weld position on the radiator, the spot weld position absorbs the laser energy and quickly converts it into heat energy, causing the irradiated area to melt instantly and form a local molten pool.

[0027] As the laser pulse ends and the heat source disappears, the molten pool rapidly solidifies under its own cooling and the heat absorption of the surrounding low-temperature area, forming a strong weld point and completing the connection between the heating elbow 11 and the heating straight pipe 12. Laser spot welding can produce weld points with diameters in the millimeter range or even smaller. Furthermore, the welding time during laser spot welding is short, generating heat only in a very small area near the weld point, minimizing the thermal impact on the surrounding area. This maximizes the preservation of the performance of other areas of the radiator, thereby reducing welding deformation.

[0028] Specifically, the workbench 1 is arranged horizontally, and two clamps 2 are installed on the workbench 1. Both clamps 2 can slide on the workbench 1. Furthermore, the clamps 2 are located at the docking positions of the two outer straight pipe sections 111 and the two outer straight heating pipes 1202 of the heating elbow 11, and the openings of the two clamps 2 are arranged opposite to the outer docking positions. The clamps 2 can clamp and align the outer docking positions, avoiding the problem of the two outer straight pipe sections 111 and the two outer straight heating pipes 1202 of the heating elbow 11 not being on the same axis.

[0029] For example, such as Figure 7 and Figure 8As shown, in some examples, there can be multiple sets of limiting clamps 3 to accommodate radiators with multiple straight heating pipes 12 in the middle. Each set of limiting clamps 3 has two clamps, and both clamps 3 can be detachably mounted on the workbench 1. The two clamps 3 have the same shape and are arranged opposite to the joint position of the straight pipe section 111 in the middle of the heating elbow 11 and the middle heating straight pipe 1201. The limiting clamps 3 can clamp the middle joint position, thus solving the problem of the straight pipe section 111 in the middle of the heating elbow 11. The problem of misalignment between the outer heating straight pipe 1202 and the middle heating straight pipe 1201 is addressed. Simultaneously, the outer wall of the limiting clamp 3 has a limiting surface 31, which is an arc shape adapted to the outer peripheral wall of the heating straight pipe 12. The limiting surface 31 assists the clamp 2 in pressing the outer mating position, ensuring that both the outer heating straight pipe 1202 and the middle heating straight pipe 1201 are aligned with the straight pipe section 111 of the heating elbow 11, further preventing the misalignment between the heating elbow 11 and the heating straight pipe 12.

[0030] It should be noted that if the heating elbow 11 and the heating straight pipe 12 are not aligned during spot welding, it will cause uneven stress at the weld, which will not only affect subsequent welding work, but also cause the radiator to not be sealed properly and leak. At the same time, the increased water flow resistance will reduce the heating efficiency, and the concentrated stress at the joint will accelerate the fatigue cracking of the weld, shorten its service life, and even cause safety hazards. Therefore, the above-mentioned clamp 2 and limiting clamp 3 can make the heating elbow 11 and the heating straight pipe 12 coaxially arranged, avoiding the problem of the heating elbow 11 and the heating straight pipe 12 being out of sync during spot welding, and improving the yield of radiators.

[0031] For example, such as Figure 9 As shown, the radiator spot welding device also includes a support plate 4. The support plate 4 is detachably installed on the side of the workbench 1 by bolts, nuts, or clips. The method of disassembling the support plate 4 is not limited. Specifically, the support plate 4 has several grooves 401 that are adapted to the diameter of the radiator straight pipe 12, and the depth of the grooves 401 is slightly larger than the radius of the radiator straight pipe 12 to better support the radiator straight pipe 12. In addition, there can be three, four, or more grooves 401 to accommodate different numbers of radiator straight pipes 12, and the shape of the grooves 401 can be changed according to the outer contour of the radiator straight pipe 12, thereby making the device more widely applicable. It should be noted that each groove 401 corresponds to an outer radiator straight pipe 1202 or an inner radiator straight pipe 1201. The grooves 401 are used to limit and support the outer radiator straight pipe 1202 and the inner radiator straight pipe 1201, preventing the radiator straight pipe 12 from shifting or falling off.

[0032] In some examples, such as Figure 4 and Figure 6As shown, it should be noted that the shape of the clamp 2 is determined according to actual needs. For example, the opening shape is an arc or a square, or the clamp 2 is in the shape of a "2" to facilitate the device to adapt to heating elbows 11 and heating straight pipes 12 of different shapes or diameters.

[0033] In addition, the fixture 2 is provided with several mounting slots 201. There can be four, five or even more mounting slots 201, and the specific number is not limited here. A limiting post 5 can be detachably installed in the mounting slot 201. Specifically, the limiting post 5 is a cylinder, and the mounting slot 201 is an arc shape that adapts to the limiting post 5, and the opening is smaller than the diameter of the arc to facilitate clamping the limiting post 5. The limiting post 5 corresponds one-to-one with the mounting slot 201. The limiting post 5 is arranged along the axial direction of the outer heating straight pipe 1202 and abuts against the outer heating elbow 11, the outer heating straight pipe 1202 and the outer docking position. Both ends of the limiting post 5 extend to the outside of the fixture 2. The limiting post 5 plays the role of positioning the straight pipe section 111 of the outer heating elbow 11 and the outer heating straight pipe 1202, so that the straight pipe section 111 and the outer heating straight pipe 1202 are arranged coaxially, thereby improving the success rate of spot welding.

[0034] For example, such as Figure 4 The workbench 1 shown has a horizontal groove 101 extending to both ends of the workbench 1. Both clamps 2 can slide within the groove 101. Before spot welding, the clamps 2 are at the end of the groove 101. After the heating elbow 11 and the heating straight pipe 12 are placed on the workbench 1 and the support plate 4, the two clamps 2 slide relative to each other to clamp the straight pipe section 111 of the outer heating elbow 11 and the docking position of the outer heating straight pipe 1202. Since the groove 101 can adjust the distance between the two clamps 2, the device is suitable for spot welding of different numbers or different diameters of heating radiators.

[0035] For example, such as Figure 5 As shown, the radiator spot welding device also includes a limiting seat 6, which is set on the workbench 1. Before the spot welding work begins, the radiator elbow 11 is placed in the limiting seat 6. The limiting seat 6 can restrict the position of the radiator elbow 11, avoiding the problem of the radiator elbow 11 shifting or falling off during the spot welding work, thus improving the working efficiency of the device.

[0036] For example, such as Figure 3 As shown, it should be noted that during the laser spot welding process, inert gas needs to be blown into the welding position. Therefore, the radiator spot welding device is also equipped with an air blowing component 7. The air blowing component 7 can slide on the worktable 1, so that the air blowing component 7 is located above the radiator to be spot welded during the spot welding process, thereby making the air blowing component 7 close to the position to be spot welded during the spot welding process.

[0037] On the one hand, it can construct a tight protective barrier around the high-temperature molten pool generated during spot welding, isolating the molten pool from the air and effectively preventing chemical reactions between the metal and oxygen, nitrogen, etc., thereby ensuring the purity of the weld metal and improving its strength, toughness, and corrosion resistance. On the other hand, the inert gas helps maintain the stability of the laser-affected area, allowing laser energy to be absorbed more accurately and stably by the welding part, reducing energy loss. In addition, the flow of inert gas can generate a certain pressure on the molten pool, suppressing liquid metal splashing and making the weld joint more aesthetically pleasing; it can also disperse the plasma cloud generated during welding, reducing its absorption and scattering of laser energy, ensuring that the laser energy acts efficiently on the welding part, and improving spot welding efficiency and quality.

[0038] Specifically, such as Figure 4 As shown, the air blowing assembly 7 includes a driver 71, a connecting pipe 72, and a nozzle 73. The driver 71 is mounted on the worktable 1, and the connecting pipe 72 is mounted on the movable end of the driver 71. The driver 71 can drive the connecting pipe 72 to slide, thereby causing the nozzle 73 mounted on the top of the connecting pipe 72 to slide. The end of the connecting pipe 72 away from the spot welding area is open and connected to a gas tank storing inert gas. The end where the nozzle 73 is mounted is closed, so that the inert gas can only be blown out from the nozzle 73.

[0039] It should be noted that there are several nozzles 73, and several nozzles 73 are connected to the connecting pipe 72. The nozzles 73 and the connecting pipe 72 are connected by a flexible hose, which makes it easy for the operator to adjust the position of the nozzles 73 so that the nozzles 73 are directly facing the docking position to spray inert gas.

[0040] For example, such as Figure 1 As shown, the radiator spot welding device also includes a frame 8, with a slide rail 81 on the top surface of the frame 8. There are two worktables 1, and the components on the two worktables 1 are the same, which facilitates the simultaneous spot welding of the two ends of the radiator, the radiator elbows 11 and the radiator straight pipes 12, avoiding the problem of needing to spot weld one end at a time and improving work efficiency. Among them, one worktable 1 is fixedly set at one end of the frame 8, and the other worktable 1 is slidably set on the slide rail 81, so that the two worktables 1 can move closer or further away from each other, and spot welding work can be performed on radiators of different lengths, making the device widely applicable.

[0041] For example, such as Figure 2As shown, the spot welding assembly 9 includes a column 91, a bracket 92, a mounting plate 93, and a welder 94. The column 91 is vertically mounted on the workbench 1 and is located directly behind the limit seat 6. The bracket 92 is mounted on the column 91. The mounting plate 93 is vertically slidably mounted on the bracket 92. The welder 94 is mounted on the mounting plate 93 and can move with the mounting plate 93 to spot weld the mating position. It should be noted that the mounting plate can slide in the vertical direction of the bracket by means of an electric push rod or a lead screw motor, so that the welder can rise or fall, which facilitates the welder to spot weld the mating position.

[0042] For example, such as Figure 3 As shown, in some examples, the radiator spot welding device also includes a sliding seat 10, which is slidably disposed in the slide groove 101. A linear drive is connected to the bottom of the sliding seat 10 to drive the sliding seat 10 to slide, thereby driving the clamp 2 to slide along the slide groove 101. The clamp 2 is detachably disposed on the sliding seat 10 by bolts and nuts, so as to facilitate the removal and replacement of clamps 2 of different sizes and shapes, so that the clamp 2 can adapt to different radiators and is also easy to replace with a new clamp 2 after damage.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A spot welding device for radiators, used to spot weld multiple straight pipe sections (111) of a radiator elbow (11) to two outer radiator straight pipes (1202) and a middle radiator straight pipe (1201) respectively, characterized in that, include: Workbench (1); The clamp (2) is provided in two parts. Both clamps (2) are slidably disposed on the workbench (1) and located on the outer sides of the straight pipe section (111) to be spot welded and the two outer heating straight pipes (1202). The openings of the two clamps (2) are arranged opposite to each other. The clamps (2) can clamp and align the docking positions of the straight pipe section (111) and the outer heating straight pipes (1202). The limiting clamp (3) has two, and both limiting clamps (3) can be detachably set on the workbench (1). The limiting clamp (3) is used to clamp the docking position of the middle heating straight pipe (1201) and the straight pipe section (111). The outer wall of the limiting clamp (3) has a limiting surface (31). The limiting surface (31) is used to cooperate with the clamp (2) to press against the outer heating straight pipe (1202).

2. The radiator spot welding device according to claim 1, characterized in that, Also includes: The lifting plate (4) is detachably mounted on the workbench (1). The lifting plate (4) has several grooves (401). Each groove (401) corresponds to an outer heating pipe (1202) or a middle heating pipe (1201). The grooves (401) are used to limit and support the outer heating pipe (1202) and the middle heating pipe (1201).

3. The radiator spot welding device according to claim 1, characterized in that, The clamp (2) has several mounting slots (201). A limiting post (5) is detachably installed in the mounting slot (201), and the limiting post (5) corresponds one-to-one with the mounting slot (201). The limiting post (5) is arranged along the axial direction of the outer heating straight pipe (1202). Both ends of the limiting post (5) extend to the outside of the clamp (2). The limiting post (5) is used to assist in positioning the straight pipe section (111) and the outer heating straight pipe (1202) so that the straight pipe section (111) and the outer heating straight pipe (1202) are arranged coaxially.

4. The radiator spot welding device according to claim 1, characterized in that, The workbench (1) is provided with a slide groove (101), and the two clamps (2) are slidably disposed in the slide groove (101). The clamps (2) can slide along the slide groove (101) to the docking position.

5. The radiator spot welding device according to claim 1, characterized in that, Also includes: Limiting seat (6), the limiting seat (6) is disposed on the workbench (1), the limiting seat (6) is used to limit the heating elbow (11).

6. A spot welding device for radiators according to claim 2, characterized in that, Also includes: The air blowing assembly (7) is slidably disposed on the worktable (1) and located above the lifting plate (4). The air blowing assembly (7) is used to blow inert gas to the docking position.

7. A spot welding device for radiators according to claim 1, characterized in that, The blowing assembly (7) includes: A driver (71) is disposed on one side of the top of the worktable (1); A connecting pipe (72) is provided on the movable end of the driver (71). One end of the connecting pipe (72) is open and the other end is closed. The connecting pipe (72) is connected to a gas source storing inert gas. The nozzle (73) has several nozzles, all of which are disposed on the connecting pipe (72) and communicate with the connecting pipe (72). The nozzle (73) is used to spray inert gas to the docking position.

8. A spot welding device for radiators according to claim 1, characterized in that, Also includes: The frame (8) has a slide rail (81) on its top surface. There are two worktables (1), at least one of which is slidably mounted on the slide rail (81). The two worktables (1) can move closer to or further away from each other.

9. A spot welding device for radiators according to claim 1, characterized in that, The spot welding assembly (9) includes: A column (91) is provided on the workbench (1); A bracket (92) is mounted on the column (91); Mounting plate (93), which is vertically slidably mounted on bracket (92); A welding device (94) is disposed on the mounting plate (93) and can move with the mounting plate (93) to perform spot welding on the mating position.

10. A spot welding device for radiators according to claim 4, characterized in that, Also includes: The sliding seat (10) is slidably disposed in the slide groove (101), and the clamp (2) is detachably disposed on the sliding seat (10).

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