Heat exchanger core welding device with positioning structure

Abstract

The utility model relates to a heat exchanger core welding device with a positioning structure, and relates to the technical field of welding devices. The welding device comprises a rack, a supporting base used for containing a heat exchanger core is arranged on the rack, a moving frame is connected to the rack in a sliding mode, two mounting plates are connected to the moving frame through moving assemblies, the moving assemblies are used for driving the mounting plates to move on the moving frame, welding guns are arranged on the mounting plates, and infrared positioners are arranged on the mounting plates. The infrared positioner can emit infrared rays to the heat exchanger core, and the welding gun is aligned with the infrared rays. The welding gun can be accurately positioned to the gap, so that the welding precision is relatively high.

Description

Technical Field

[0001] The present application relates to the field of welding devices, and in particular to a welding device for a heat exchanger core with a positioning structure. Background Art

[0002] After the heat exchanger core is welded once in a brazing furnace, when the welding effect does not reach the ideal level, further welding is required. At this time, a welding device needs to be used to further weld the heat exchanger core.

[0003] The welding device mainly includes a welding base, a moving frame, and a welding torch. The welding base is used to place the heat exchanger core to be welded. The moving frame reciprocates along the length direction of the welding base, and the welding torch is located on the moving frame. When the moving frame moves, it drives the welding torch to move, and the welding torch can weld the heat exchanger core.

[0004] In actual use, the position between the heat exchanger core and the welding torch needs to be manually positioned, and manual positioning has a large error, resulting in a decrease in the welding accuracy of the welding device, so it needs to be improved. Summary of the Utility Model

[0005] In order to improve the problem that the heat exchanger core and the welding torch cannot be accurately positioned, resulting in low welding accuracy, the present application provides a welding device for a heat exchanger core with a positioning structure.

[0006] The welding device for a heat exchanger core with a positioning structure provided by the present application adopts the following technical solutions:

[0007] A welding device for a heat exchanger core with a positioning structure includes a frame. A support base for placing the heat exchanger core is provided on the frame. A moving frame is slidably connected to the frame. Two mounting plates are connected to the moving frame through a moving component. The moving component is used to drive the mounting plates to move on the moving frame. A welding torch is provided on the mounting plates. An infrared locator is provided on the mounting plates. The infrared locator can emit infrared rays onto the heat exchanger core, and the welding torch is aligned with the infrared rays.

[0008] By adopting the above technical solutions, during operation, the heat exchanger core is placed on the support base. Then, the moving frame is driven to move so that the mounting plates move to the position of the heat exchanger core. Then, the moving component is started to adjust the position of the mounting plates. During this process, the infrared locator is turned on so that the infrared locator irradiates the infrared rays on the heat exchanger core. When the infrared rays coincide with the gap on the heat exchanger core, the movement of the mounting plates stops. Since the welding torch is always aligned with the infrared rays, the welding torch can be directly started at this time to weld the gap. At the same time, by driving the moving frame to move, welding of the gaps on the same straight line can be achieved, and the operation is convenient. During this process, the gap is positioned by emitting infrared rays so that the welding torch can find the gap accurately, thereby improving the welding accuracy.

[0009] Optionally, a cylinder is provided on the frame. The output end of the cylinder is fixed to the moving frame and is used to drive the moving frame to move on the frame. A guiding block is fixed on the frame, and a guiding groove is formed on the moving frame. The guiding block is inserted into the guiding groove and can move in the guiding groove.

[0010] By adopting the above technical solution, when the cylinder is started, the moving frame is driven to move, so that the guiding block slides relative in the guiding groove. The side wall of the guiding block abuts against the inner wall of the guiding groove, playing a role in limiting and guiding, so that the moving frame can only move along the length direction of the guiding block without deviation, improving the stability of the movement of the moving frame.

[0011] Optionally, the moving assembly includes a moving motor, a moving lead screw, and two moving blocks. The moving motor is arranged on the moving frame. The moving lead screw is horizontally arranged and is disposed perpendicular to the moving direction of the moving frame. One end of the moving lead screw is coaxially fixed to the output end of the moving motor. The moving motor is used to drive the moving lead screw to rotate. Threaded structures with opposite helix directions are provided at both ends of the moving lead screw. The two moving blocks are respectively sleeved on both ends of the moving lead screw and are threadedly connected to the moving lead screw. When the moving lead screw rotates, it is used to drive the two moving blocks to approach or move away from each other. The mounting plate is fixed to the moving block.

[0012] By adopting the above technical solution, when the moving motor is started, the moving lead screw is driven to rotate, thereby driving the two moving blocks to approach or move away from each other, changing the position of the mounting plate, so that the infrared rays emitted by the infrared locator can coincide with the gap, realizing the positioning of the welding torch and the gap on the heat exchanger core. The two mounting plates move synchronously driven by the moving blocks, that is, the two welding torches are always symmetric about the central axis of the heat exchanger core, so that the two welding torches can simultaneously weld the gaps on both sides of the heat exchanger core, and the operation is convenient.

[0013] Optionally, the mounting plate is connected to the welding torch through a lifting assembly. The lifting assembly includes a lifting motor, a lifting lead screw, and a lifting block. The lifting motor is fixed on the mounting plate. The lifting lead screw is vertically arranged, and the top end of the lifting lead screw is coaxially fixed to the output end of the lifting motor. The lifting motor is used to drive the lifting lead screw to rotate. The lifting block is sleeved on the lifting lead screw and is threadedly connected to the lifting lead screw. When the lifting lead screw rotates, it is used to drive the lifting block to move up and down. The welding torch and the infrared locator are both fixed to the lifting block.

[0014] By adopting the above technical solution, in the initial state, the welding torch is suspended above the heat exchanger core. When the welding torch reaches the gap of the heat exchanger core, the lifting motor is started. The lifting lead screw is driven to rotate, so that the lifting block moves downward, and the welding torch moves downward to the gap, so as to weld the heat exchanger core. The adjustment of the height direction of the welding torch is realized in this process, so that the gaps at different heights of heat exchanger cores with different sizes can be welded, and the applicability is better.

[0015] Optionally, a plurality of positioning blocks are provided on the support seat. The heat exchanger core is placed between the plurality of positioning blocks, and the positioning blocks can abut against the side wall of the heat exchanger core.

[0016] By adopting the above technical solution, when the heat exchanger core is placed on the support seat, the heat exchanger core is located between the plurality of positioning blocks. At this time, the positioning blocks abut against the side wall of the heat exchanger core, playing a limiting role, so that the heat exchanger core is not easy to displace on the support seat, improving the stability of the heat exchanger core placed on the support seat, and making the heat exchanger core not easy to move during the welding process, thus improving the welding accuracy.

[0017] Optionally, a rubber pad is fixed on the side of the positioning block close to the heat exchanger core, and the side of the rubber pad away from the positioning block can abut against the side wall of the heat exchanger core.

[0018] By adopting the above technical solution, when the heat exchanger core is placed between the plurality of positioning blocks, the side wall of the heat exchanger core abuts against the rubber pad. The rubber pad plays a protective role, making it not easy for the positioning block and the side wall of the heat exchanger core to wear, thus prolonging the service life of the heat exchanger core.

[0019] Optionally, an adjustment groove is formed in the positioning block, and a vertically arranged screw is fixed on the support seat. The screw penetrates through the adjustment groove and can move relative to the adjustment groove. A nut is sleeved on the screw, and the nut is threadedly connected to the screw. The bottom wall of the nut can abut against the positioning block.

[0020] By adopting the above technical solution, before placing the heat exchanger core, first move the nut away from the positioning block so that the nut is separated from the positioning block. At this time, the positioning block can move on the support seat, that is, the screw rod moves relatively in the adjustment groove until the size of the area between several positioning blocks is larger than the size of the heat exchanger core, so as to facilitate the placement of the heat exchanger core between several positioning blocks. Subsequently, move the positioning block towards the heat exchanger core until the rubber pad on the positioning block abuts against the side wall of the heat exchanger core. At this time, move the nut towards the positioning block until the nut abuts against the positioning block, and the nut applies an extrusion force to the positioning block, so that the nut is fixed to the positioning block, that is, the positioning block maintains the state of abutting tightly against the heat exchanger core, realizing the limitation of the heat exchanger core, and the size of the area surrounded by several positioning blocks can be changed, so as to realize the limitation of heat exchanger cores of different sizes and have better applicability.

[0021] Optionally, a gasket is provided between the nut and the fixing block, and the nut can press the gasket against the fixing block.

[0022] By adopting the above technical solution, the gasket increases the contact area between the nut and the positioning block, fills the gap between the nut and the positioning block at the same time, prevents the nut from loosening, and increases the stability of the fixed connection between the nut and the positioning block.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. During work, place the heat exchanger core on the support seat, then drive the moving frame to move so that the mounting plate moves to the position of the heat exchanger core. Then start the moving component to adjust the position of the mounting plate. During this process, turn on the infrared locator so that the infrared locator irradiates infrared rays on the heat exchanger core. When the infrared rays coincide with the gap on the heat exchanger core, the mounting plate stops moving. Since the welding torch always aims at the infrared rays, directly start the welding torch at this time to weld the gap, and at the same time drive the moving frame to move, then the gaps on the same straight line can be welded, and the operation is convenient. During this process, the position of the gap is located by emitting infrared rays so that the welding torch can find the gap accurately, thereby improving the welding accuracy;

[0025] 2. When the heat exchanger core is placed on the support seat, the heat exchanger core is located between several positioning blocks. At this time, the positioning block abuts against the side wall of the heat exchanger core, playing a limiting role, making it difficult for the heat exchanger core to displace on the support seat, improving the stability of the heat exchanger core placed on the support seat, and making it difficult for the heat exchanger core to move during the welding process, thereby improving the welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of a welding device for a heat exchanger core with a positioning structure according to an embodiment of the present application;

[0027] Figure 2 Schematic structural diagram on the mobile frame;

[0028] Figure 3 is Figure 1 The enlarged view of part A in

[0029] In the figure: 10, frame; 11, guide block; 20, support seat; 21, screw; 30, mobile frame; 31, guide groove; 32, cylinder; 40, moving component; 41, moving motor; 42, moving lead screw; 43, moving block; 50, mounting plate; 60, lifting component; 61, lifting motor; 62, lifting lead screw; 63, lifting block; 70, welding torch; 80, infrared positioner; 90, positioning block; 91, rubber pad; 92, adjusting groove; 110, nut; 120, gasket. Detailed implementation mode

[0030] The following further elaborates on this application in conjunction with the attached Figures 1-3 drawings.

[0031] The embodiment of this application discloses a welding device for a heat exchanger core with a positioning structure. Referring to Figure 1 and Figure 2 , the welding device for a heat exchanger core with a positioning structure includes a frame 10, a support seat 20 and a mobile frame 30. The support seat 20 is fixed on the frame 10. The support seat 20 is a support rod arranged in a crisscross pattern. The heat exchanger core is placed on the support seat 20.

[0032] Referring to Figure 1 and Figure 2 , the mobile frame 30 is arranged on the frame 10. The mobile frame 30 is in the structure of a gantry. The support seat 20 is located below the mobile frame 30. Among them, a guide block 11 is fixed on the frame 10, and a guide groove 31 is opened on the mobile frame 30. The guide block 11 is inserted into the guide groove 31. A cylinder 32 is installed on the frame 10 through bolts. The output end of the cylinder 32 is fixed to the mobile frame 30. The cylinder 32 can drive the mobile frame 30 to move, so that the guide block 11 moves relative to the guide groove 31.

[0033] Referring to Figure 1 and Figure 2 , two mounting plates 50 are connected to the mobile frame 30 through a moving component 40. The moving component 40 enables the mounting plates 50 to move along the length direction of the mobile frame 30. A welding torch 70 and an infrared positioner 80 are connected to the mounting plates 50 through a lifting component 60. The lifting component 60 can drive the infrared positioner 80 and the welding torch 70 to move up and down. Among them, the infrared positioner 80 can emit infrared rays onto the heat exchanger core, and the welding torch 70 is aligned with the infrared rays.

[0034] During operation, place the heat exchanger core on the support seat 20. Then, drive the moving frame 30 to move, so that the mounting plate 50 moves to the position of the heat exchanger core. Next, start the moving component 40 to adjust the position of the mounting plate 50. During this process, turn on the infrared locator 80, so that the infrared locator 80 irradiates infrared rays on the heat exchanger core. When the infrared rays coincide with the gap on the heat exchanger core, the mounting plate 50 stops moving. Since the welding torch 70 always aims at the infrared rays, at this time, start the lifting component 60 to make the welding torch 70 move to the gap, and then start the welding torch 70 to weld the gap. At the same time, use the air cylinder 32 to drive the moving frame 30 to move, so as to realize welding of the gaps on the same straight line, and the operation is convenient. During this process, the position of the gap is located by emitting infrared rays, so that the welding torch 70 can find the gap accurately, thereby improving the welding precision.

[0035] Refer to Figure 1 and Figure 2 As shown in FIGS. and, the moving component 40 includes a moving motor 41, a moving lead screw 42 and two moving blocks 43. The moving motor 41 is arranged on the moving frame 30. The moving lead screw 42 is horizontally arranged and is disposed along the direction perpendicular to the movement direction of the moving frame 30. One end of the moving lead screw 42 is coaxially fixed to the output end of the moving motor 41. The moving motor 41 is used to drive the moving lead screw 42 to rotate. Thread structures with opposite helix directions are provided at both ends of the moving lead screw 42, that is, the moving lead screw 42 is a bidirectional lead screw. The two moving blocks 43 are respectively sleeved at both ends of the moving lead screw 42 and are threadedly connected to the moving lead screw 42. The rotation of the moving lead screw 42 is used to drive the two moving blocks 43 to approach or move away from each other. The mounting plate 50 is fixed to the moving block 43.

[0036] Start the moving motor 41 to drive the moving lead screw 42 to rotate, thereby driving the two moving blocks 43 to approach or move away from each other, so that the position of the mounting plate 50 changes, so that the infrared rays emitted by the infrared locator 80 can coincide with the gap, realizing the positioning of the welding torch 70 and the gap on the heat exchanger core. The two mounting plates 50 move synchronously driven by the moving blocks 43, that is, the two welding torches 70 are always symmetrical about the central axis of the heat exchanger core, so that the two welding torches 70 can simultaneously weld the gaps on both sides of the heat exchanger core, and the operation is convenient.

[0037] Refer to Figure 1 and Figure 2 As shown in FIGS. and, the lifting component 60 includes a lifting motor 61, a lifting lead screw 62 and a lifting block 63. The lifting motor 61 is fixed on the mounting plate 50. The lifting lead screw 62 is vertically arranged, and the top end of the lifting lead screw 62 is coaxially fixed to the output end of the lifting motor 61. The lifting motor 61 is used to drive the lifting lead screw 62 to rotate. The lifting block 63 is sleeved on the lifting lead screw 62 and is threadedly connected to the lifting lead screw 62. The rotation of the lifting lead screw 62 is used to drive the lifting block 63 to move up and down. The welding torch 70 and the infrared locator 80 are both fixed on the lifting block 63.

[0038] In the initial state, the welding torch 70 is suspended above the heat exchanger core. When the welding torch 70 reaches the gap of the heat exchanger core, the lifting motor 61 is started. The lifting lead screw 62 is driven to rotate, so that the lifting block 63 moves downward, and the welding torch 70 moves downward to the gap, so as to weld the heat exchanger core. In this process, the adjustment of the height direction of the welding torch 70 is realized, so that the gaps at different heights of heat exchanger cores with different sizes and the heat exchanger core can be welded, and the applicability is better.

[0039] Referring to Figure 1 and Figure 3 , a plurality of positioning blocks 90 are provided on the support base 20. The heat exchanger core is placed between the plurality of positioning blocks 90. A rubber pad 91 is fixed on one side of the positioning block 90 close to the heat exchanger core, and the rubber pad 91 abuts against the side wall of the heat exchanger core.

[0040] When the heat exchanger core is placed on the support base 20, the heat exchanger core is located between the plurality of positioning blocks 90. At this time, the side wall of the heat exchanger core abuts against the rubber pad 91, and the rubber pad 91 plays a protective role, so that the positioning block 90 and the side wall of the heat exchanger core are not easily worn. The positioning block 90 plays a limiting role on the heat exchanger core, so that the heat exchanger core is not easily displaced on the support base 20, improving the stability of the heat exchanger core placed on the support base 20, and making the heat exchanger core not easily move during the welding process, thereby improving the welding accuracy.

[0041] Referring to Figure 1 and Figure 3 , an adjustment groove 92 is formed on the positioning block 90. A vertically arranged screw 21 is fixed on the support base 20. The screw 21 passes through the adjustment groove 92 and can move relative to the adjustment groove 92. A nut 110 is sleeved on the screw 21. The nut 110 is threadedly connected to the screw 21. A gasket 120 is provided between the nut 110 and the fixed block, and the nut 110 can press the gasket 120 against the fixed block.

[0042] Before placing the heat exchanger core, the nut 110 is first moved in a direction away from the positioning block 90, so that the nut 110 is separated from the positioning block 90. At this time, the positioning block 90 can move on the support base 20, that is, the screw 21 moves relative to the adjustment groove 92 until the size of the area between the plurality of positioning blocks 90 is larger than the size of the heat exchanger core, so as to facilitate the placement of the heat exchanger core between the plurality of positioning blocks 90.

[0043] Subsequently, move the positioning block 90 towards the heat exchanger core until the rubber pad 91 on the positioning block 90 abuts tightly against the side wall of the heat exchanger core. At this time, move the nut 110 towards the positioning block 90 until the nut 110 abuts against the gasket 120. The nut 110 applies an extrusion force to the positioning block 90 through the gasket 120, so that the nut 110 is fixed to the positioning block 90, that is, the positioning block 90 maintains the state of tightly abutting against the heat exchanger core, realizing the limitation of the heat exchanger core. The size of the area surrounded by several positioning blocks 90 can be changed, so as to realize the limitation of heat exchanger cores of different sizes, and the applicability is better.

[0044] The implementation principle of a heat exchanger core welding device with a positioning structure in an embodiment of the present application is as follows: During operation, place the heat exchanger core on the support seat 20, then drive the moving frame 30 to move so that the mounting plate 50 moves to the position of the heat exchanger core. Then start the moving assembly 40 to adjust the position of the mounting plate 50. During this process, turn on the infrared locator 80 so that the infrared locator 80 irradiates infrared rays on the heat exchanger core. When the infrared rays coincide with the gap on the heat exchanger core, the mounting plate 50 stops moving. Since the welding torch 70 always aims at the infrared rays, at this time start the lifting assembly 60 to move the welding torch 70 to the gap, and then start the welding torch 70 to weld the gap. At the same time, use the cylinder 32 to drive the moving frame 30 to move, so as to realize the welding of the gaps on the same straight line, and the operation is convenient. During this process, the gap is positioned by emitting infrared rays so that the welding torch 70 can find the gap accurately, thereby improving the welding accuracy.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A heat exchanger core welding device with a positioning structure, characterized in that: The invention comprises a frame (10), wherein a support seat (20) for placing a heat exchanger core is provided on the frame (10), a movable frame (30) is slidably connected to the frame (10), two mounting plates (50) are connected to the movable frame (30) via a movable assembly (40), the movable assembly (40) is used to drive the mounting plates (50) to move on the movable frame (30), a welding gun (70) is provided on the mounting plate (50), an infrared locator (80) is provided on the mounting plate (50), the infrared locator (80) can emit infrared rays to the heat exchanger core, and the welding gun (70) is aimed at the infrared rays.

2. The heat exchanger core welding device with a positioning structure according to claim 1, characterized in that: The frame (10) is provided with a cylinder (32), the output end of the cylinder (32) is fixed to the movable frame (30) and is used to drive the movable frame (30) to move on the frame (10), the frame (10) is fixed with a guide block (11), the movable frame (30) is provided with a guide groove (31), the guide block (11) is inserted in the guide groove (31) and can move in the guide groove (31).

3. The heat exchanger core welding device with a positioning structure according to claim 1, characterized in that: The moving assembly (40) comprises a moving motor (41), a moving screw (42) and two moving blocks (43). The moving motor (41) is arranged on the moving frame (30). The moving screw (42) is arranged horizontally and arranged along a moving direction perpendicular to the moving frame (30). One end of the moving screw (42) is coaxially fixed with the output end of the moving motor (41). The moving motor (41) is used to drive the moving screw (42) to rotate. The two ends of the moving screw (42) are provided with thread structures with opposite rotation directions. The two moving blocks (43) are respectively sleeved on the two ends of the moving screw (42) and are threadedly connected to the moving screw (42). The moving screw (42) rotates to drive the two moving blocks (43) to move closer to or farther away from each other. The mounting plate (50) is fixed to the moving blocks (43).

4. The heat exchanger core welding device with a positioning structure according to claim 1, characterized in that: The mounting plate (50) is connected to the welding gun (70) through a lifting assembly (60). The lifting assembly (60) comprises a lifting motor (61), a lifting screw (62) and a lifting block (63). The lifting motor (61) is fixed on the mounting plate (50). The lifting screw (62) is vertically arranged, and the top end of the lifting screw (62) is coaxially fixed with the output end of the lifting motor (61). The lifting motor (61) is used to drive the lifting screw (62) to rotate. The lifting block (63) is sleeved on the lifting screw (62) and is threadedly connected to the lifting screw (62). The lifting screw (62) rotates to drive the lifting block (63) to move up and down. The welding gun (70) and the infrared locator (80) are both fixed on the lifting block (63).

5. The heat exchanger core welding device with a positioning structure according to claim 1, characterized in that: The support seat (20) is provided with a plurality of positioning blocks (90), the heat exchanger core is placed between the plurality of positioning blocks (90), and the positioning blocks (90) can abut against the side walls of the heat exchanger core.

6. The heat exchanger core welding device with a positioning structure according to claim 5, characterized in that: A rubber pad (91) is fixed on the side of the positioning block (90) close to the heat exchanger core, and the side of the rubber pad (91) away from the positioning block (90) can abut against the side wall of the heat exchanger core.

7. The heat exchanger core welding device with a positioning structure according to claim 5, characterized in that: The positioning block (90) is provided with an adjustment groove (92), a screw rod (21) vertically arranged is fixed on the support seat (20), the screw rod (21) passes through the adjustment groove (92) and can move relatively in the adjustment groove (92), a nut (110) is sleeved on the screw rod (21), the nut (110) is threadedly connected to the screw rod (21), and the bottom wall of the nut (110) can abut against the positioning block (90).

8. The heat exchanger core welding device with a positioning structure according to claim 7, characterized in that: A gasket (120) is provided between the nut (110) and the fixing block, and the nut (110) can press the gasket (120) against the fixing block.

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