A heat exchanger welding positioning device and welding positioning method

Abstract

This application relates to a welding positioning device and method for a heat exchanger. The welding positioning device includes a first frame, a limiting part, and a supporting part. The limiting part is located on one side of the first frame along a first direction and includes at least one first limiting member. The limiting direction of the first limiting member is parallel to a second direction, where the first direction is the height direction of the first frame and the second direction is the length direction of the first frame. The supporting part is arranged opposite to the limiting part and includes a first supporting member, a rotary hinge, and a second supporting member. The first supporting member is movably connected to the first frame and can move relative to the first frame along the first direction. The rotary hinge connects the first supporting member and the second supporting member, and the second supporting member can rotate relative to the first supporting member by a preset angle with the rotary hinge as the fulcrum. This welding positioning device can improve the positioning accuracy of the manifold on the side to be welded, facilitating automated identification and welding.

Description

Technical Field

[0001] This application relates to the field of heat exchanger processing and manufacturing technology, specifically to a heat exchanger welding positioning device and positioning method. Background Technology

[0002] When vertically welding heat exchangers, it is usually necessary to position the manifold on the side to be welded so that the welding points on that side are roughly horizontal to facilitate automated identification and welding. In related technologies, most welding positioning devices clamp the heat exchanger between two rigid supports, keeping it close to the upper support. However, since the manifolds on both sides of most heat exchangers are not perfectly parallel, and due to factors such as assembly tolerances, the parallelism of the manifolds on both sides is not entirely the same between different heat exchangers, this positioning method easily leads to the manifold on the side to be welded tilting. Furthermore, the tilting of the manifolds varies between different heat exchangers, making it difficult to accurately position the manifold on the side to be welded, thus affecting the accuracy of automated welding. Summary of the Invention

[0003] The first aspect of this application provides a heat exchanger welding positioning device that can improve the positioning accuracy of the manifold on the side to be welded, thereby facilitating automated identification and welding.

[0004] The heat exchanger welding positioning device provided in the first aspect of this application includes a first frame, a limiting part, and a supporting part. The limiting part is located on one side of the first frame along a first direction. The limiting part includes at least one first limiting member. The limiting direction of the first limiting member is parallel to a second direction, where the first direction is the height direction of the first frame and the second direction is the length direction of the first frame. The supporting part is arranged opposite to the limiting part. The supporting part includes a first supporting member, a rotary hinge, and a second supporting member. The first supporting member is movably connected to the first frame and can move relative to the first frame along the first direction. The rotary hinge connects the first supporting member and the second supporting member. The second supporting member can rotate relative to the first supporting member by a preset angle with the rotary hinge as a fulcrum.

[0005] When the heat exchanger welding positioning device is in operation, the heat exchanger to be welded can be placed on the second support member with the side to be welded facing the first limiting member. Then, the first support member is moved along the first direction. After the side of the heat exchanger to be welded comes into contact with the first limiting member, if the manifold on the side to be welded is inclined relative to the first limiting member, the reaction force of the first limiting member on the heat exchanger will cause the second support member to rotate relative to the first support member with the rotational hinge as the fulcrum. This causes the manifold on one side of the second support member to tilt, thereby keeping the manifold on the side to be welded parallel to the first limiting member. This improves the positioning accuracy of the manifold on the side to be welded, and facilitates automated identification and welding.

[0006] A second aspect of this application provides a method for welding and positioning a heat exchanger, comprising the following steps: The heat exchanger is placed directly or indirectly on the second support. The second support member is moved along the height direction of the first frame so that the manifold of the heat exchanger facing the first limiting member abuts against the first limiting member. The reaction force of the first limiting member on the heat exchanger causes the second support member to rotate around the pivot hinge to maintain the manifold of the heat exchanger on the first limiting member side parallel to the length direction of the first frame.

[0007] The heat exchanger welding positioning method uses the reaction force of the first limiting member on the heat exchanger to cause the second support member to drive the heat exchanger to tilt around the rotational hinge as the fulcrum, thereby keeping the manifold on the side to be welded parallel to the first limiting member, improving the positioning accuracy of the manifold on the side to be welded, and facilitating automated identification and welding. Attached Figure Description

[0008] Figure 1 A schematic diagram of the structure of the heat exchanger welding positioning device provided in this application in a specific embodiment; Figure 2 for Figure 1 A schematic diagram of the heat exchanger welding positioning device in use; Figure 3 A schematic diagram of the structure of the support portion provided in this application in a specific embodiment; Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the diagram; Figure 5 A schematic diagram of the structure of the spring support member provided in this application in a specific embodiment; Figure 6 for Figure 5 A schematic diagram of the spring support component on the other side; Figure 7 A schematic diagram of the structure of the limiting part provided in this application in a specific embodiment; Figure 8 for Figure 7 A magnified schematic diagram of the structure at point B in the diagram; Figure 9 A schematic diagram of the drive unit provided in this application in a specific embodiment; Figure 10 A schematic diagram of the structure of the first frame provided in this application in a specific embodiment; Figure 11 for Figure 2 A plan view of the welding positioning device for the heat exchanger during use.

[0009] Reference numerals: First frame 1, Lateral support 11, Foot 12, Limiting part 2, First limiting part 21, End face positioning block 211, Arc surface positioning block 212, Limiting groove 213, Second slide rail 22, Second locking part 23, Support part 3, First support part 31, Rotary hinge 32, Second support part 33, Sliding wheel 331, Second limiting part 34, Third limiting part 35, Arc-shaped slide groove 351, First slide rail 36, Spring support part 37, First spring 370, Sliding seat 371, Rod body 372, Support seat 373, Sliding block 374, Mounting seat 375, Reset plate 376, Second spring 377, First locking part 378, Limiting rod 379, Drive part 4, Lead screw 41, Lead screw nut 42, Drive motor 43, First commutator 44, Second commutator 45, Fixing part 46, Heat exchanger 5.

[0010] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0011] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0012] It should be understood that the described embodiments are merely a part of the technical solutions of this application, and not all of them. All other technical solutions obtained by those skilled in the art based on the technical solutions in this application without inventive effort are within the scope of protection of this application.

[0013] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0014] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0015] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0016] like Figure 1-11 As shown, the first aspect of this application provides a heat exchanger welding positioning device, which includes a first frame 1, a limiting part 2, and a support part 3. The limiting part 2 is located on one side of the first frame 1 along a first direction and includes at least one first limiting member 21. The limiting direction of the first limiting member 21 is parallel to a second direction, where the first direction is the height direction of the first frame 1 and the second direction is the length direction of the first frame 1. The support part 3 is arranged opposite to the limiting part 2 and includes a first support member 31, a rotary hinge 32, and a second support member 33. The first support member 31 is movably connected to the first frame 1 and can move relative to the first frame 1 along the first direction. The rotary hinge 32 connects the first support member 31 and the second support member 33, and the second support member 33 can rotate relative to the first support member 31 by a preset angle with the rotary hinge 32 as the fulcrum.

[0017] In this embodiment, the heat exchanger welding positioning device can place the heat exchanger 5 to be welded on the second support 33, with the manifold on the side to be welded facing the first limiting member 21. Then, the first support 31 is moved along the first direction. After the side of the heat exchanger 5 to be welded comes into contact with the first limiting member 21, if the manifold on the side to be welded is inclined relative to the first limiting member 21, the reaction force of the first limiting member 21 on the heat exchanger 5 will cause the second support 33 to rotate relative to the first support 31 with the rotating hinge 32 as the fulcrum. This causes the manifold on the side of the second support 33 to tilt to keep the manifold on the side to be welded parallel to the first limiting member 21, thereby improving the positioning accuracy of the manifold on the side to be welded and facilitating automated identification and welding.

[0018] like Figure 2 and Figure 11As shown, the heat exchanger 5 typically includes at least two oppositely arranged manifolds and multiple heat exchange tubes connecting the two manifolds. During vertical welding, one manifold can be placed on the second support 33. Since the second support 33 can rotate relative to the first support 31 with a pivot hinge 32, after the manifold on the side being welded abuts against the first limiting member 21, regardless of which side of the heat exchanger 5's manifold is tilted, the second support 33 can rotate, making the manifold on the side abutting against the first limiting member 21 parallel to the limiting direction of the first limiting member 21. Generally, the limiting direction (second direction) of the first limiting member 21 is parallel to the horizontal plane, ensuring that the lines connecting the welding points on that side of the manifold are on the same horizontal plane, facilitating welding point identification and automated welding.

[0019] like Figure 1 and Figure 10 As shown, in one specific embodiment, the first frame 1 includes a frame-shaped main frame and at least one lateral support member 11 disposed in the thickness direction of the main frame. The limiting part 2 and the support part 3 are both disposed on the main frame. The lateral support member 11 increases the support points of the main frame, making the entire structure more stable, and can also be used to install automated welding equipment, etc. Multiple feet 12 are provided at the bottom of the main frame and the lateral support member 11. The feet 12 include rollers to facilitate movement of the device when needed. The limiting part 2 and the support part 3 are arranged along the height direction of the first frame 1, which also facilitates the adjustment of the overall posture of the heat exchanger 5 by the second support member 33 of the support part 3 under the combined action of the weight of the heat exchanger 5 and the reaction force of the first limiting member 21.

[0020] like Figure 3-4 As shown, in one specific embodiment, the support portion 3 further includes at least one second limiting member 34. The second limiting member 34 is disposed on at least one side of the first support member 31 along the length direction. The second limiting member 34 includes a telescopic end, which can abut against the second support member 33 and maintain a preset gap with the second support member 33.

[0021] like Figure 3-4As shown, in this embodiment, the second limiting member 34 is preferably a limiting cylinder. The second limiting member 34 can be arranged on both sides of the first support member 31 along its length (near the end of the first support member 31). When the telescopic end of the second limiting member 34 abuts against the second support member 33, the second support member 33 can no longer rotate relative to the first support member 31. Therefore, this state can be used for leveling the posture when loading (the heat exchanger 5 is placed on the second support member 33), preventing the second support member 33 from rotating during the placement of the heat exchanger 5, which could cause the heat exchanger 5 to tilt or fall. After the heat exchanger 5 is placed and the first limiting member 21 forms a certain degree of limitation on the side of the heat exchanger 5 to be welded, the telescopic end of the second limiting member 34 can maintain a preset gap with the second support member 33. In this way, the second support member 33 can rotate to adjust the overall posture of the heat exchanger 5.

[0022] It should be noted that the number and position of the second limiting member 34 can be preset according to the usage requirements and the length of the first support member 31. Generally speaking, two second limiting members 34 that are roughly symmetrical on both sides of the first support member 31 along the length direction can meet the usage requirements. However, the number of second limiting members 34 can be appropriately increased to provide auxiliary support, or the contact area between the second limiting member 34 and the second support member 33 can be increased to improve the stability of the support. This article does not make specific limitations on this.

[0023] like Figure 3-4 As shown, in one specific embodiment, the support part 3 further includes at least one third limiting member 35. The third limiting member 35 is disposed on at least one side of the first support member 31 along the length direction. The third limiting member 35 has an arc-shaped groove 351. The side wall of the second support member 33 is provided with a sliding wheel 331. The sliding wheel 331 is movably connected to the arc-shaped groove 351, and the sliding wheel 331 can slide along the inner wall of the arc-shaped groove 351.

[0024] Preferably, there are two third limiting members 35, and the two third limiting members 35 are respectively arranged on one side of the first support member 31 along its length direction. The third limiting members 35 on both sides can jointly limit the rotation angle of the second support member 33. Specifically, the sliding wheel 331 is rotatably disposed on the side wall of the second support member 33, the third limiting members 35 are fixed to the side wall of the first support member 31, and the sliding wheel 331 is slidably disposed in the arc-shaped groove 351 of the first support member 31. When the second support member 33 rotates, the sliding wheel 331 slides in the arc-shaped groove 351, and the arc-shaped groove 351 limits the sliding wheel 331.

[0025] Understandably, although the two manifolds of heat exchanger 5 are not perfectly parallel, the tilt angle between them will not be large if the product standards are met. Therefore, the rotation angle between the second support 33 and the first support 31 does not need to be large. The third limiting member 35 with the arc-shaped groove 351 effectively limits the rotation angle of the second support 33, preventing the heat exchanger 5 from tilting or falling due to excessive rotation. Simultaneously, the arc-shaped groove 351 also maintains the rotation path of the second support 33. Furthermore, the maximum rotation angle of the second support 33 can be adjusted by presetting the length of the arc-shaped groove 351.

[0026] like Figure 3 and Figure 5 As shown, in one specific embodiment, the second support member 33 is provided with a first slide rail 36, the length direction of the first slide rail 36 extends along the length direction of the second support member 33; the support part 3 also includes at least two spring support members 37, the spring support members 37 being slidably connected to the first slide rail 36.

[0027] like Figure 3 As shown, the first slide rail 36 is fixedly mounted on the second support member 33. During installation, a long groove can be made on one side of the top of the second support member 33, and the first slide rail 36 can be partially installed within this groove, thereby improving the stability of the connection. Furthermore, the number of spring supports 37 is preferably two, and the spring supports 37 are slidably connected to the first slide rail 36. When placing the heat exchanger 5, the heat exchanger 5 can be placed on the two spring supports 37, thus preventing hard contact between the heat exchanger 5 and the second support member 33. In addition, the distance between the two spring supports 37 can be adjusted according to different models of heat exchangers 5, allowing this heat exchanger welding positioning device to better adapt to various sizes and models of heat exchangers 5.

[0028] like Figure 5-6 As shown, in one specific embodiment, the spring support 37 includes a first spring 370, a sliding seat 371, a rod 372, a support seat 373, and a limiting member. The sliding seat 371 is slidably connected to the first slide rail 36, the rod 372 is connected to the sliding seat 371, the first spring 370 is sleeved on the rod 372 and abuts against the sliding seat 371, the rod 372 is located on at least one side of the support seat 373, and the rod 372 is rotatably connected to the support seat 373. The limiting member can limit the movement distance of the sliding seat 371.

[0029] As mentioned above, the two opposing manifolds of the heat exchanger are not perfectly parallel; there is a certain degree of inclination between them. For a single manifold, due to manufacturing errors or unavoidable defects during production, such as brazing deformation, the straightness of some manifolds is not necessarily perfectly straight. That is, the extension direction of the outer wall of the manifold is not entirely along the axis of the manifold. For example, the manifold may have a partial bulge, or along the length of the manifold, one part may bend at a small angle relative to the other. Furthermore, there are still variations between each manifold. In this case, when the manifold is placed on the two spring supports 37, if the support direction of the two spring supports 37 is perpendicular to the length direction of the manifold, this support method may affect the overall posture of the heat exchanger 5 on the two spring supports 37, increasing the difficulty of adjustment.

[0030] In this embodiment, the sliding seat 371 is slidably disposed on the first slide rail 36. The sliding seat 371 includes a sliding block and a seat body fixedly disposed on the top of the sliding block. The limiting member can limit the movement distance of the sliding seat 371 on the first slide rail 36. In addition, one end of the rod 372 is connected to the sliding seat 371, and the first spring 370 is sleeved on the rod 372 and abuts against the sliding seat 371. The rod 372 is preferably located on both sides of the support seat 373, and the other end of the rod 372 is rotatably connected to the support seat 373. The support seat 373 has an inwardly recessed placement groove, such as a V-shaped placement groove, which can be used to place the heat exchanger 5.

[0031] After the manifold of heat exchanger 5 is placed on support 373, under the weight of heat exchanger 5, the manifold will transmit downward pressure to support 373. If the manifold itself has a certain tilt or bending angle, the downward pressure will be tilted in the direction of gravity. Since rod 372 and support 373 are rotatably connected, the downward pressure tilted in the direction of gravity will cause rod 372 to rotate relative to support 373. Furthermore, the end of rod 372 away from support 373 drives sliding seat 371 to slide on the first slide rail 36, causing the support height of the entire spring support 37 to change slightly, thus adapting to manifolds with different straightness. The limiting member can limit the movement distance of sliding seat 371, preventing excessive movement of sliding seat 371 and affecting the overall balance of heat exchanger 5. In addition, when the manifold of the heat exchanger 5 is placed on the support 373, the downward pressure generated by the heat exchanger 5 will cause the first spring 370 to contract, thereby providing flexible support for the heat exchanger 5.

[0032] like Figure 5-6As shown, in one specific embodiment, the limiting member includes a sliding block 374, a mounting base 375, a reset plate 376, and a second spring 377. The sliding block 374 is located on both sides of the sliding base 371 along the second direction, and the sliding block 374 is slidably connected to the first slide rail 36. The mounting base 375 connects the two opposing sliding blocks 374. The reset plate 376 is directly or indirectly connected to the sliding base 371, and both sides of the reset plate 376 are directly or indirectly connected to the mounting base 375 through the second spring 377.

[0033] Specifically, in this embodiment, two sliding blocks 374 slidably connected to the first slide rail 36 are located on both sides of the sliding seat 371 to limit the movement distance of the sliding seat 371. A mounting base 375 is located on top of the sliding blocks 374 and fixedly connects the two sliding blocks 374. A through hole is provided on the mounting base 375, through which a reset plate 376 passes and is fixedly connected to the seat body of the sliding seat 371. The reset plate 376 is connected to the mounting base 375 on both sides along its thickness direction via a second spring 377.

[0034] When one of the sliding blocks 374 is moved, the sliding block 374 transmits the thrust to the reset plate 376 through the second spring 377, thereby causing the sliding seat 371 to move as well. After the thrust disappears, the elastic force of the second spring 377 will restore the sliding seat 371 and the sliding block 374 to their original distance. In addition, when the heat exchanger 5 is removed from the support 373, the elastic force of the second spring 377 can also drive the sliding seat 371 to return to its original position, that is, drive the rod 372 back to the vertical state, preventing the rod 372 from being in a tilted state. This can better cope with manifolds with different straightness.

[0035] like Figure 5-6 As shown, in one specific embodiment, the limiting member further includes a first locking member 378, which is movably disposed on the sliding block 374 and can abut against the first slide rail 36; the support base 373 is provided with a plurality of limiting rods 379, which are located on at least one side of the rod body 372 along the second direction.

[0036] like Figure 5-6 As shown, in this embodiment, the limiting rod 379 is preferably located on both sides of the rod body 372 along the second direction. The limiting rod 379 can limit the maximum angle of rotation of the rod body 372. In addition, the limiting rod 379 is provided with threaded holes, and the rotation space of the rod body 372 can be reduced by setting screws or bolts on the limiting rod 379, thereby limiting the rotation angle of the rod body 372. After the spring support member 37 is moved to a suitable position, the sliding block 374 can be locked in the preset position of the first slide rail 36 by the first locking member 378 to prevent the sliding block 374 of the spring support member 37 from sliding.

[0037] like Figure 7-8 As shown, in one specific embodiment, the limiting part 2 further includes a second slide rail 22 and a second locking member 23. The length direction of the second slide rail 22 extends along the second direction. The first limiting member 21 is slidably connected to the second slide rail 22, and the second locking member 23 is threadedly connected to the first limiting member 21. The second locking member 23 can abut against the side wall of the second slide rail 22.

[0038] Because different models of heat exchangers 5 require different welding positions, the first limiting member 21 may interfere with the components on the heat exchanger 5. Therefore, in this embodiment, the first limiting member 21 is set on the second slide rail 22. The position of the first limiting member 21 can be adjusted according to the model of the heat exchanger 5. After adjustment, the first limiting member 21 can be locked by the second locking member 23 to prevent the first limiting member 21 from sliding on the second slide rail 22.

[0039] like Figure 8 As shown, in one specific embodiment, the first limiting member 21 includes an end face positioning block 211 and at least two arc-shaped positioning blocks 212, and the second locking member 23 is disposed on the arc-shaped positioning block 212. The arc-shaped positioning block 212 has a limiting groove 213 on the side facing the support part 3, and the distance from the wall of the limiting groove 213 to the support part 3 is greater than the distance from the end face positioning block 211 to the support part 3. Specifically, the end face positioning block 211 is used to position the side of the heat exchanger 5. Once one side of the heat exchanger 5 is positioned, the position of the entire heat exchanger can be determined. Therefore, one end face positioning block 211 is preferred. The arc-shaped positioning block 212 is used to position the manifold on the side to be welded, and it needs to be positioned through two or more points. Therefore, the number of arc-shaped positioning blocks 212 is at least two. In addition, the shape of the limiting groove 213 is preferably V-shaped or U-shaped, which can better limit the manifold at multiple points.

[0040] When the support part 3 moves upward and the side of the heat exchanger 5 contacts the end face positioning block 211, and there is still a certain distance between it and the arc surface positioning block 212, the telescopic end of the second limiting member 34 can be retracted, so that the second support member 33 can rotate freely. At the same time, the support part 3 continues to move, so that the manifold on the side of the heat exchanger 5 to be welded abuts against the arc surface positioning block 212. Since the second support member 33 can rotate relative to the first support member 31, after adjusting the posture of the heat exchanger 5, the manifold on the side to be welded can always abut against the two arc surface positioning blocks 212. After abutting against the arc surface positioning blocks 212, subsequent automatic welding can be performed.

[0041] like Figure 1 and Figure 9As shown, in one specific embodiment, the heat exchanger positioning device further includes a driving unit 4, which includes a driving member, a lead screw 41 and a lead screw nut 42. The lead screw 41 is located on at least one side of the first support member 31 along the length direction, and the length direction of the lead screw 41 extends along a first direction. The first support member 31 is directly or indirectly connected to the lead screw nut 42, and the driving member is connected to the lead screw 41 in a transmission manner.

[0042] like Figure 9 As shown, preferably, there are two lead screws 41, located on both sides of the first support member 31. The two sides of the first support member 31 can be connected to the corresponding lead screw nuts 42 via connectors. The driving member drives the lead screw to rotate, thereby causing the lead screw nuts 42 to move relative to the lead screw 41, and then causing the first support member 31 to move upwards. Additionally, to increase the stability of the upward movement of the first support member 31, a longitudinal slide rail can be provided in the first frame 1, and the first support member 31 can be slidably connected to this longitudinal slide rail. This will not be elaborated upon further in this paper.

[0043] like Figure 9 As shown, in one specific embodiment, the driving component includes a drive motor 43, a first commutator 44, and a second commutator 45. The first commutator 44 and the second commutator 45 are drive-connected to the drive motor 43. Lead screws 41 are located on both sides of the first support member 31 along its length, and the lead screws 41 on both sides are drive-connected to the first commutator 44 and the second commutator 45, respectively. The drive motor 43 may be equipped with a reduction gearbox, etc. The output shaft of the drive motor 43 rotates, and after being redirected by the first commutator 44 and the second commutator 45, the rotation is transmitted to the lead screws 41 on both sides, thereby driving the lead screw nut 42 to move along the length of the lead screw 41.

[0044] like Figure 1-11 As shown, the second aspect of this application provides a heat exchanger welding positioning method, which mainly includes the following steps: The heat exchanger 5 is placed directly or indirectly on the second support member 33; The second support member 33 is moved along the height direction of the first frame 1 so that the manifold of the heat exchanger 5 facing the first limiting member 21 abuts against the first limiting member 21. The reaction force of the first limiting member 21 on the heat exchanger 5 causes the second support member 33 to rotate around the rotating hinge 32 as the fulcrum, so as to maintain the manifold of the heat exchanger 5 on the first limiting member 21 as parallel to the length direction of the first frame 1.

[0045] The heat exchanger welding positioning method uses the reaction force of the first limiting member 21 on the heat exchanger 5 to cause the second support member 33 to drive the heat exchanger 5 to tilt around the rotating hinge 32 as the fulcrum, thereby keeping the manifold on the side to be welded parallel to the first limiting member 21, improving the positioning accuracy of the manifold on the side to be welded, and facilitating automated identification and welding.

[0046] In one specific embodiment, the heat exchanger welding positioning method further includes the following steps: A first limiting member 21 is provided between the first support member 31 and the second support member 33. Before the heat exchanger 5 is placed, the first limiting member 21 is driven to limit the second support member 33. After placing the heat exchanger 5, move the second support 33 to the first position. In the first position, the end of the manifold of the heat exchanger 5 facing the first limiting member 21 contacts the end face positioning block 211, and the side wall of the manifold maintains a preset distance from the arc-shaped positioning block 212. The first limiting member 21 is driven to release the limiting of the second support member 33, and the second support member 33 is moved to the second position. In the second position, the side wall of the manifold facing the first limiting member 21 of the heat exchanger 5 abuts against the limiting groove 213 of the arc-shaped positioning block 212.

[0047] Specifically, the heat exchanger welding positioning method includes the following steps: First, based on the width of the heat exchanger 5, the two spring support members 37 in the support part 3 are roughly symmetrically distributed on the first slide rail 36, and then locked by the first locking member 378 (this step is only required when changing to a different model of heat exchanger 5).

[0048] Extend the telescopic end of the second limiting member 34 and press it against the second support member 33, so that the second support member 33 is fixed relative to the first support member 31 and the spring support member 37 is kept at a certain level. Then, place the heat exchanger 5 on the spring support member 37.

[0049] According to the length of the heat exchanger 5, the support part 3 is moved by the drive part 4, thereby moving the heat exchanger 5. When the heat exchanger 5 is moved to the first position, it stops. At the first position, the end of the manifold of the heat exchanger 5 facing the first limiting member 21 contacts the end face positioning block 211, and the side wall of the manifold maintains a preset distance from the arc surface positioning block 212.

[0050] The drive unit 4 is driven to work again, so that the heat exchanger 5 moves to the second position, and at the same time the second limiting member 34 releases its limitation on the second support member 33; in the second position, the side wall of the manifold of the heat exchanger 5 facing the first limiting member 21 abuts against the limiting groove 213 of the arc-shaped positioning block 212.

[0051] The above examples illustrate the principles and implementation methods of this application. The descriptions of the embodiments are merely for the purpose of helping to understand the methods and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications should also fall within the protection scope of this application.

Claims

1. A heat exchanger welding positioning device, characterized in that, The device includes a first frame (1), a limiting part (2), and a supporting part (3). The limiting part (2) is located on one side of the first frame (1) along a first direction. The limiting part (2) includes at least one first limiting member (21). The limiting direction of the first limiting member (21) is parallel to a second direction. The first direction is the height direction of the first frame (1), and the second direction is the length direction of the first frame (1). The supporting part (3) is arranged opposite to the limiting part (2). The supporting part (3) includes a first supporting member (31), a rotating hinge (32), and a second supporting member (33). The first supporting member (31) is movably connected to the first frame (1), and the first supporting member (31) can move relative to the first frame (1) along the first direction. The rotating hinge (32) connects the first supporting member (31) and the second supporting member (33). The second supporting member (33) can rotate relative to the first supporting member (31) by a preset angle with the rotating hinge (32) as the fulcrum.

2. The heat exchanger positioning device according to claim 1, characterized in that, The support part (3) further includes at least one second limiting member (34), the second limiting member (34) is disposed on at least one side of the first support member (31) along the length direction, the second limiting member (34) includes a telescopic end, the telescopic end of the second limiting member (34) can abut against the second support member (33) and maintain a preset gap with the second support member (33).

3. The heat exchanger positioning device according to claim 2, characterized in that, The support part (3) further includes at least one third limiting member (35), which is disposed on at least one side of the first support member (31) along the length direction. The third limiting member (35) has an arc-shaped groove (351). The side wall of the second support member (33) is provided with a sliding wheel (331), which is movably connected to the arc-shaped groove (351) and can slide along the inner wall of the arc-shaped groove (351).

4. The heat exchanger positioning device according to any one of claims 1-3, characterized in that, The second support member (33) is provided with a first slide rail (36), the length direction of the first slide rail (36) extends along the length direction of the second support member (33); the support part (3) also includes at least two spring support members (37), the spring support members (37) are slidably connected to the first slide rail (36).

5. The heat exchanger positioning device according to claim 4, characterized in that, The spring support (37) includes a first spring (370), a sliding seat (371), a rod (372), a support seat (373), and a limiting member. The sliding seat (371) is slidably connected to the first slide rail (36), the rod (372) is connected to the sliding seat (371), the first spring (370) is sleeved on the rod (372) and abuts against the sliding seat (371), the rod (372) is located on at least one side of the support seat (373), and the rod (372) is rotatably connected to the support seat (373). The limiting member can limit the movement distance of the sliding seat (371).

6. The heat exchanger positioning device according to claim 5, characterized in that, The limiting component includes a sliding block (374), a mounting base (375), a reset plate (376), and a second spring (377). The sliding block (374) is located on both sides of the sliding base (371) along the second direction, and the sliding block (374) is slidably connected to the first slide rail (36). The mounting base (375) connects the two opposing sliding blocks (374). The reset plate (376) is directly or indirectly connected to the sliding base (371), and both sides of the reset plate (376) are directly or indirectly connected to the mounting base (375) through the second spring (377).

7. The heat exchanger positioning device according to claim 6, characterized in that, The limiting member further includes a first locking member (378), which is movably disposed on the sliding block (374) and can abut against the first slide rail (36); the support base (373) is provided with a plurality of limiting rods (379), which are located on at least one side of the rod body (372) along the second direction.

8. The heat exchanger positioning device according to any one of claims 1-3 or 5-7, characterized in that, The limiting part (2) further includes a second slide rail (22) and a second locking member (23). The length direction of the second slide rail (22) extends along the second direction. The first limiting member (21) is slidably connected to the second slide rail (22). The second locking member (23) is threadedly connected to the first limiting member (21). The second locking member (23) can abut against the side wall of the second slide rail (22).

9. The heat exchanger positioning device according to claim 8, characterized in that, The first limiting member (21) includes an end face positioning block (211) and at least two arc-shaped positioning blocks (212), and the second locking member (23) is disposed on the arc-shaped positioning block (212); the arc-shaped positioning block (212) is provided with a limiting groove (213) on the side facing the support part (3), and the distance from the wall of the limiting groove (213) to the support part (3) is greater than the distance from the end face positioning block (211) to the support part (3).

10. The heat exchanger positioning device according to any one of claims 1-3, 5-7, or 9, characterized in that, The heat exchanger positioning device further includes a drive unit (4), which includes a drive member, a lead screw (41) and a lead screw nut (42). The lead screw (41) is located on at least one side of the first support member (31) along the length direction, and the length direction of the lead screw (41) extends along the first direction. The first support member (31) is directly or indirectly connected to the lead screw nut (42), and the drive member is connected to the lead screw (41) in a transmission manner.

11. The heat exchanger positioning device according to claim 10, characterized in that, The driving component includes a drive motor (43), a first commutator (44), and a second commutator (45). The first commutator (44) and the second commutator (45) are connected to the drive motor (43) in a transmission manner. The lead screw (41) is located on both sides of the first support member (31) along the length direction, and the lead screw (41) on both sides is connected to the first commutator (44) and the second commutator (45) in a transmission manner, respectively.

12. A method for welding and positioning a heat exchanger, characterized in that, Includes the following steps: The heat exchanger (5) is placed directly or indirectly on the second support (33); The second support member (33) is moved along the height direction of the first frame (1) so that the manifold of the heat exchanger (5) facing the first limiting member (21) abuts against the first limiting member (21). The reaction force of the first limiting member (21) on the heat exchanger (5) causes the second support member (33) to rotate with the rotating hinge (32) as the fulcrum, so as to maintain the manifold of the heat exchanger (5) on the first limiting member (21) side parallel to the length direction of the first frame (1).

13. The heat exchanger welding positioning method according to claim 12, characterized in that, It also includes the following steps: A first limiting member (21) is provided between the first support member (31) and the second support member (33), and the first limiting member (21) is driven to limit the second support member (33) before the heat exchanger (5) is placed; After the heat exchanger (5) is placed, the second support (33) is moved to the first position. At the first position, the end of the manifold of the heat exchanger (5) facing the first limiting member (21) contacts the end face positioning block (211), and the side wall of the manifold maintains a preset distance from the arc surface positioning block (212). Drive the first limiting member (21) to cancel the limiting of the second support member (33), move the second support member (33) to the second position, and in the second position, the side wall of the manifold of the heat exchanger (5) facing the first limiting member (21) abuts against the limiting groove (213) of the arc-shaped positioning block (212).

Images