Double-sided welding device for heat exchanger core

Abstract

The utility model provides a double-face welding device for a heat exchanger core, and relates to the field of welding equipment. The welding device comprises a pair of stand columns and a welding robot, the welding robot is arranged on the outer sides of the stand columns, a base is arranged between the pair of stand columns, the opposite sides of the pair of stand columns are each provided with a rotating disc, and the two rotating discs are both connected with the base; the rotating disc is used for driving the base to rotate between the pair of stand columns. A limiting mechanism is arranged on the base and used for fixing a workpiece to be welded. The welding device has the effects of high positioning speed and high welding efficiency.

Description

Technical Field

[0001] The present application relates to the field of welding equipment, and in particular to a double-sided welding device for a heat exchanger core. Background Art

[0002] After the heat exchanger core passes through the brazing furnace, other components need to be assembled on the outside of the core to form a heat exchanger.

[0003] In the related prior art, the welding device of the heat exchanger core mainly includes a welding base and a positioning plate. The positioning plates are two oppositely arranged. The positioning plates are arranged on the welding base in the vertical direction, and the positioning plates can reciprocate along the length direction of the welding base to adapt to different types of heat exchangers. When the heat exchanger needs to be welded, the worker places the heat exchanger core on the welding base in the vertical direction and uses the positioning plate to position the heat exchanger core. The worker then places the accessories to be installed in the corresponding position for welding.

[0004] However, in the above process, the two positioning plates have a poor positioning effect on the heat exchanger core. Moreover, the components on the heat exchanger are usually located on both sides of the heat exchanger core. After welding on one side is completed, workers are required to weld on the other side of the heat exchanger core, resulting in low overall welding efficiency of the heat exchanger core. Utility Model Content

[0005] In order to improve the problems of poor positioning effect and low welding efficiency of existing welding devices, the present application provides a double-sided welding device for a heat exchanger core.

[0006] The present application provides a double-sided welding device for a heat exchanger core, which adopts the following technical solution:

[0007] A double-sided welding device for a heat exchanger core comprises a pair of columns and a welding robot, wherein the welding robot is arranged on the outside of the columns, a base is provided between the pair of columns, a rotating disk is provided on the opposite sides of the pair of columns, both rotating disks are connected to the base, and the rotating disk is used to drive the base to rotate between the pair of columns; a limiting mechanism is provided on the base, and the limiting mechanism is used to fix the workpiece to be welded.

[0008] By adopting the above technical solution, after the limiting mechanism has limited the workpiece to be welded, the workpiece can be reliably fixed on the base, and the base can be flipped between a pair of columns. In this way, when the welding robot has completed welding one side of the workpiece, the rotating disk rotates to realize the rotation of the workpiece, making it easier for the welding robot to weld the other side of the workpiece.

[0009] Optionally, one rotating disk is disposed on the inner side of one of the columns, and the other rotating disk is disposed on the inner side of another of the columns. An electric motor is disposed on the outer side of any one of the columns, and the motor is used to drive the rotating disk on the corresponding column.

[0010] By adopting the above technical solution, the motor drives a rotating disk to rotate, thereby driving the base to rotate between a pair of columns, thereby realizing the driving and turning of the workpiece.

[0011] Optionally, the base includes a pair of horizontal beams and a pair of vertical beams, the extension direction of the vertical beams is perpendicular to the spacing direction of the pair of columns, the extension direction of the horizontal beams is perpendicular to the extension direction of the vertical beams, the pair of horizontal beams and the pair of vertical beams are interconnected and frame-shaped, and the rotating disk is connected to the vertical beams.

[0012] By adopting the above technical solution, the base is assembled using horizontal beams and vertical beams, which reduces the overall mass of the base, thereby ensuring that the base can rotate between a pair of columns.

[0013] Optionally, the limiting mechanism includes a fixed plate and a pair of movable plates, the fixed plate is detachably provided with a pair of first positioning pins, and each end of the movable plate is provided with a pair of second positioning pins; one side wall of the workpiece abuts against the pair of first positioning pins, and the other side wall of the workpiece abuts against the pair of second positioning pins, and the first positioning pins and the second positioning pins are used to fix the workpiece in the horizontal direction; each of the movable plates is also provided with a movable cylinder and a fixed cylinder, and the movable cylinder and the fixed cylinder are respectively arranged on both sides of the workpiece, and the movable cylinder and the fixed cylinder are used to fix the workpiece in the vertical direction.

[0014] By adopting the above technical solution, the position of the fixed plate is fixed and the position of the movable plate is adjustable. In this way, the horizontal positioning of the workpiece can be achieved through the first positioning pin on the fixed plate and the second positioning pin on the movable plate, and the workpiece is fixed in the vertical direction through the movable cylinder and the fixed cylinder, ensuring that the workpiece can be reliably fixed on the base to prevent it from falling during welding.

[0015] Optionally, the fixed plate and the movable plate both span between a pair of cross beams, the fixed plate and the cross beams are connected by fixing bolts, a plurality of mounting holes are provided on the top of the fixed plate, the plurality of mounting holes extend along the length direction of the fixed plate, the first locating pin is adaptively screwed into any of the mounting holes, and the distance between two adjacent mounting holes is smaller than the width of the workpiece; a pair of the first locating pins and a pair of the second locating pins are arranged in an L shape, and a side of the workpiece abutting against the first locating pin is adjacent to a side of the workpiece abutting against the second locating pin.

[0016] By adopting the above technical solution, the first locating pin is connected to different mounting holes. After moving the position of the movable plate, the position of the second locating pin is adjusted, so that the first locating pin and the second locating pin can adapt to workpieces of different sizes, ensuring that the limiting mechanism can reliably and quickly limit and fix the workpiece.

[0017] Optionally, an adjustment groove is provided on the top of the movable plate, and the adjustment groove extends along the length direction of the movable plate. The second positioning pin and the fixed cylinder are both located outside one end of the adjusting groove. An adjusting screw is provided on the outer wall of the movable cylinder, and the adjusting screw is passed through the adjusting groove and is locked by a nut; a pressure rod is provided on the push rods of the movable cylinder and the fixed cylinder, and the pressure rod is in an inverted L shape. The horizontal end of the pressure rod is connected to the movable cylinder or the fixed cylinder and extends toward the top of the workpiece. The vertical end of the pressure rod is located above the workpiece, and a pressing unit is provided at the vertical end of the pressure rod, and the pressing unit presses against the top of the workpiece.

[0018] By adopting the above technical solution, the movable cylinder is moved along the length direction of the movable plate, so that the adjusting screw rod can slide in the adjusting groove, and the adjusting screw rod cooperates with the nut to fix the movable cylinder. The pressure rod moves in the vertical direction under the push of the movable cylinder and the fixed cylinder to achieve reliable locking of the workpiece.

[0019] Optionally, a slide groove is provided on the top of the cross beam, and a slider is provided on the bottom of the movable plate, and the slider slides adaptively in the slide groove; a plurality of first positioning holes are provided on the outer side of the slide groove, and the laying direction of the plurality of first positioning holes is the same as the extension direction of the slide groove; a second positioning hole is provided on the movable plate, and the second positioning hole is coaxially arranged with any of the first positioning holes, and adjustment bolts are adaptively screwed in the second positioning hole and the first positioning hole.

[0020] By adopting the above technical solution, the cooperation between the slider and the slide groove realizes the rapid adjustment of the position of the movable plate. After the position of the movable plate is adjusted, the movable plate is locked by adjusting the bolt to ensure that the movable plate does not slide during the welding process.

[0021] Optionally, the pressing unit includes a base plate and several pressure strips, the top of the base plate is connected to the vertical end of the pressure rod, the top of the base plate is provided with several through holes, the through holes are threaded holes, the upper part of the pressure strip is adaptively screwed into the through holes, and the bottom of several of the pressure strips fits with the top of the workpiece.

[0022] By adopting the above technical solution, before the pressure strip contacts the workpiece, the position of the pressure strip in the perforation is adjusted by rotating the pressure strip, so that the distance between the pressure strip and the top of the workpiece can be adjusted. In this way, after the positions of several pressure strips are all adjusted, several pressure strips can be more closely fitted to the top of the workpiece, thereby improving the limiting and fixing effect of the workpiece.

[0023] In summary, this application has the following beneficial effects:

[0024] 1. The workpiece is fixed on the base through the limit mechanism, and then the base is driven by the rotating disk so that the base can drive the workpiece to flip. In this way, the welding robot can weld both sides of the workpiece within a smaller extension range, thereby effectively improving the welding efficiency.

[0025] 2. Through the cooperation of the first positioning pin and the second positioning pin, the two adjacent side walls of the workpiece are quickly positioned, and the workpiece is fixed in the horizontal direction. Through the driving action of the movable cylinder and the fixed cylinder on the pressure rod and the pressure unit, the workpiece is fixed in the vertical direction, ensuring that the workpiece can remain stationary during the flipping and welding process, thereby improving the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic stereogram of the present application;

[0027] Figure 2 It is a reference diagram of the assembly state of the limit mechanism and the base;

[0028] Figure 3 It is a reference diagram of the assembly state of the workpiece and the limiting mechanism;

[0029] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 5 It is a reference diagram of the assembly state of the movable plate and the movable cylinder;

[0031] In the figure: 1. column; 11. rotating disk; 12. motor; 2. welding robot; 3. base; 31. crossbeam; 311. slide groove; 312. first positioning hole; 32. vertical beam; 4. limit mechanism; 41. fixed plate; 411. fixing bolt; 412. mounting hole; 42. movable plate; 421. adjusting groove; 422. slider; 423. second positioning hole; 424. adjusting bolt; 43. first positioning pin; 44. second positioning pin; 45. movable cylinder; 451. adjusting screw rod; 452. nut; 453. pressure rod; 46. fixed cylinder; 47. pressing unit; 471. bottom plate; 4710. perforation; 472. pressure strip; 5. workpiece. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] Figure 1 is a schematic three-dimensional diagram of the present application. Figure 1 A double-sided welding device for a heat exchanger core includes a pair of columns 1 and a welding robot 2. The pair of columns 1 are arranged at intervals. A rotating disk 11 is provided on the opposite sides of the two columns 1. A base 3 is provided between the two rotating disks 11. The base 3 includes a pair of cross beams 31 and a pair of vertical beams 32. The extension direction of the vertical beams 32 is perpendicular to the spacing direction of the pair of columns 1. The extension direction of the cross beams 31 is perpendicular to the extension direction of the vertical beams 32. The cross beams 31 and the vertical beams 32 are connected in sequence to form a frame shape. The two vertical beams 32 are connected to the two rotating disks 11 one by one. At the same time, a motor 12 is provided on the outside of any column 1. The motor 12 drives the motor 12 on the column 1 to rotate, so that the base 3 can rotate between the pair of rotating disks 11, and the rotation angle can be reasonably set according to the welding requirements.

[0034] Figure 2 This is a reference diagram of the assembly status of the limit mechanism and the base. Figure 3 This is a reference diagram of the assembly status of the workpiece and the limit mechanism. Figure 3 and Figure 4 Combined with Figure 1 A limiting mechanism 4 for fixing the workpiece 5 to be welded is provided on the base 3. The limiting mechanism 4 includes a fixed plate 41 and a pair of movable plates 42. The fixed plate 41 and the movable plate 42 are arranged in parallel. Both ends of the fixed plate 41 and the movable plate 42 are mounted on the crossbeam 31. The fixed plate 41 and the crossbeam 31 are detachably connected by fixing bolts 411, but the fixed plate 41 will always remain connected to the crossbeam 31, that is, the position of the fixed plate 41 will remain unchanged. A plurality of mounting holes 412 and two first positioning pins 43 are provided on the top of the fixed plate 41. According to the different sizes of the workpiece 5, the mounting holes 412 are selected and the first positioning pins 43 are screwed in to fix the position of the first positioning pins 43. A slide groove 311 is provided on the top of the crossbeam 31, and a slider 422 is provided at the end of the movable plate 42. The slide groove 311 extends along the length direction of the crossbeam 31, and the slider 422 slides in the slide groove 311 in an adaptive manner, thereby adjusting the position of the movable plate 42. A plurality of first positioning holes 312 are provided at intervals at the top of the crossbeam 31 and along the extension direction of the slide groove 311, and a second positioning hole 423 is provided at the end of the movable plate 42. When the second positioning hole 423 is coaxial with a first positioning hole 312, the adjusting bolt 424 is screwed into the second positioning hole 423 and the first positioning hole 312, thereby forming a fixing effect on the movable plate 42.

[0035] Figure 4 yes Figure 3 The enlarged structural diagram at A in the middle, Figure 5 This is a reference diagram of the assembly status of the movable plate and the movable cylinder. Figure 4 and Figure 5 Combined with Figure 3 An adjusting groove 421 is provided on the top of the movable plate 42, and the adjusting groove 421 extends along the length direction of the movable plate 42. The adjusting groove 421 penetrates the movable plate 42 in the vertical direction. A movable cylinder 45 and a fixed cylinder 46 are also provided on the movable plate 42. The movable cylinder 45 and the fixed cylinder 46 are respectively located on both sides of the workpiece 5. The fixed cylinder 46 is provided at one end of the movable plate 42 and its position with the movable plate 42 is kept fixed. A second positioning pin 44 is also provided on the top of the movable plate 42. The second positioning pin 44 is staggered with the fixed cylinder 46 and can be fitted with the workpiece 5, while the movable cylinder 45 and the fixed cylinder 46 are kept separated from the workpiece 5. When the distance between the two movable plates 42 and the distance between the movable plate 42 and the fixed plate 41 are adjusted and fixed according to the length of the workpiece 5, the two first positioning pins 43 and the two second positioning pins 44 will be arranged in an L shape. In this way, after the flat workpiece 5 is placed on the movable plate 42, the workpiece 5 is pushed toward the corners of the pair of first positioning pins 43 and the pair of second positioning pins 44, so that the two adjacent side surfaces of the workpiece 5 are respectively fitted with the pair of first positioning pins 43 and the pair of second positioning pins 44. In this way, the position of the workpiece 5 on the two movable plates 42 can be quickly positioned, thereby achieving the fixation of the position of the workpiece 5 in the horizontal direction. Furthermore, the distance between a pair of first positioning pins 43 is smaller than the width of the workpiece 5, and the distance between a pair of second positioning pins 44 is smaller than the length of the workpiece 5. In this way, the fixing effect of the workpiece 5 in the horizontal direction can be effectively improved. At the same time, when the workpiece 5 is fixed in the horizontal direction, the workpiece 5 has two side walls away from the movable cylinder 45 or the fixed cylinder 46, one of the side walls is located on the outside of the fixed plate 41 and close to a vertical beam 32, and the other side wall is located on the outside of the movable plate 42 and close to another number, and welding operations will be performed on these two side walls. In this way, the external space of the two side walls is larger, which is convenient for welding operations.

[0036] See also Figure 4 and Figure 5An adjusting screw rod 451 is fixedly provided on the outer wall of the movable cylinder 45, and the adjusting screw rod 451 is passed through the adjusting groove 421 to the bottom of the movable plate 42. After the first positioning pin 43 and the second positioning pin 44 have positioned the workpiece 5, the movable cylinder 45 is pushed to slide toward the fixed cylinder 46 until the movable cylinder 45 is close to the workpiece 5, and then a nut 452 is screwed on the lower end of the adjusting screw rod 451 to fix the movable cylinder 45. An inverted L-shaped pressure rod 453 is provided on the push rod of the movable cylinder 45 and the push rod of the fixed cylinder 46. The horizontal end of the pressure rod 453 is connected to the push rod of the movable cylinder 45 or the fixed cylinder 46. The horizontal end of the pressure rod 453 moves toward the top of the workpiece 5, thereby ensuring that the vertical end of the pressure rod 453 is located above the workpiece 5. When the push rod of the movable cylinder 45 or the push rod of the fixed cylinder 46 moves up and down, the vertical end of the pressure rod 453 will move away from or close to the workpiece 5, thereby achieving the fixing or unlocking of the workpiece 5 in the vertical direction.

[0037] See also Figure 4 A pressing unit 47 is provided at the vertical end of the pressure rod 453, and the pressing unit 47 presses against the top of the workpiece 5. The pressing unit 47 includes a bottom plate 471 and a plurality of pressure strips 472. The top of the bottom plate 471 is connected to the vertical end of the pressure rod 453. The top of the bottom plate 471 is provided with a plurality of through holes 4710, and the through holes 4710 are provided with internal threads. The upper part of the outer wall of the pressure strip 472 is provided with external threads, and the internal threads and the external threads are adapted to each other, that is, the pressure strip 472 can rotate in the through holes 4710. When the movable cylinder 45 and the fixed gas rod push the pressure rod 453 close to the top of the workpiece 5 and are about to contact the top of the workpiece 5, they stop moving, then rotate the pressure strip 472 and adjust the screw-in position of the pressure strip 472 in the through hole 4710, so that each pressure strip 472 can contact the top of the workpiece 5. At this time, the movable cylinder 45 and the fixed cylinder 46 act again, and the workpiece 5 can be reliably pressed by a plurality of pressure strips 472, ensuring that there is enough force bearing area between the pressure unit 47 and the workpiece 5, and improving the pressure effect of the pressure unit 47 on the workpiece 5 without damaging the workpiece 5, thereby ensuring that the workpiece 5 can remain reliably locked during the rotation of the base 3. In this way, after the welding robot 2 completes welding on one side of the workpiece 5, under the driving action of the rotating disk 11 on the base 3 and the limiting action of the limiting mechanism 4 on the workpiece 5, the other side of the workpiece 5 can be stably turned to the welding robot 2, thereby reliably welding the other side of the workpiece 5, effectively improving the welding efficiency and improving the welding accuracy.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A double-sided welding device for a heat exchanger core, characterized in that: The invention comprises a pair of columns (1) and a welding robot (2), wherein the welding robot (2) is arranged outside the columns (1), a base (3) is arranged between the pair of columns (1), a rotating disk (11) is arranged on opposite sides of the pair of columns (1), the two rotating disks (11) are connected to the base (3), and the rotating disk (11) is used to drive the base (3) to rotate between the pair of columns (1); The base (3) is provided with a limiting mechanism (4), and the limiting mechanism (4) is used to fix the workpiece (5) to be welded.

2. A double-sided welding device for a heat exchanger core according to claim 1, characterized in that: One of the rotating disks (11) is arranged on the inner side of one of the columns (1), and the other rotating disk (11) is arranged on the inner side of another of the columns (1). An electric motor (12) is arranged on the outer side of any one of the columns (1), and the electric motor (12) is used to drive the rotating disk (11) on the corresponding column (1).

3. A double-sided welding device for a heat exchanger core according to claim 1, characterized in that: The base (3) comprises a pair of cross beams (31) and a pair of vertical beams (32); the extension direction of the vertical beams (32) is perpendicular to the spacing direction of the pair of columns (1); the extension direction of the cross beams (31) is perpendicular to the extension direction of the vertical beams (32); the pair of cross beams (31) and the pair of vertical beams (32) are connected to each other and are frame-shaped; the rotating disk (11) is connected to the vertical beams (32).

4. A double-sided welding device for a heat exchanger core according to claim 3, characterized in that: The limiting mechanism (4) comprises a fixed plate (41) and a pair of movable plates (42); a pair of first positioning pins (43) are detachably provided on the fixed plate (41); and a pair of second positioning pins (44) are provided at the end of each movable plate (42); One side wall of the workpiece (5) abuts against a pair of the first positioning pins (43), and the other side wall of the workpiece (5) abuts against a pair of second positioning pins (44), and the first positioning pins (43) and the second positioning pins (44) are used to fix the workpiece (5) in a horizontal direction; Each movable plate (42) is also provided with a movable cylinder (45) and a fixed cylinder (46), wherein the movable cylinder (45) and the fixed cylinder (46) are respectively arranged on two sides of the workpiece (5), and the movable cylinder (45) and the fixed cylinder (46) are used to fix the workpiece (5) in the vertical direction.

5. A double-sided welding device for a heat exchanger core according to claim 4, characterized in that: The fixed plate (41) and the movable plate (42) are both spanned between a pair of cross beams (31), the fixed plate (41) and the cross beams (31) are connected via fixing bolts (411), a plurality of mounting holes (412) are provided on the top of the fixed plate (41), the plurality of mounting holes (412) extend along the length direction of the fixed plate (41), the first positioning pin (43) is adaptively screwed into any of the mounting holes (412), and the distance between two adjacent mounting holes (412) is less than the width of the workpiece (5); A pair of the first positioning pins (43) and a pair of the second positioning pins (44) are arranged in an L shape, and a side of the workpiece (5) abutting against the first positioning pins (43) and a side of the workpiece (5) abutting against the second positioning pins (44) are adjacent to each other.

6. A double-sided welding device for a heat exchanger core according to claim 5, characterized in that: An adjusting groove (421) is provided on the top of the movable plate (42), and the adjusting groove (421) extends along the length direction of the movable plate (42). The second positioning pin (44) and the fixed cylinder (46) are both located outside one end of the adjusting groove (421). An adjusting screw rod (451) is provided on the outer wall of the movable cylinder (45), and the adjusting screw rod (451) is inserted into the adjusting groove (421) and is locked by a nut (452). A pressing rod (453) is provided on the push rods of the movable cylinder (45) and the fixed cylinder (46), and the pressing rod (453) is in an inverted L shape. The horizontal end of the pressing rod (453) is connected to the movable cylinder (45) or the fixed cylinder (46) and extends toward the top of the workpiece (5). The vertical end of the pressing rod (453) is located above the workpiece (5). A pressing unit (47) is provided at the vertical end of the pressing rod (453), and the pressing unit (47) presses against the top of the workpiece (5).

7. A double-sided welding device for a heat exchanger core according to claim 5, characterized in that: A slide groove (311) is provided at the top of the crossbeam (31), and a slider (422) is provided at the bottom of the movable plate (42), and the slider (422) slides in the slide groove (311) in an adaptive manner; A plurality of first positioning holes (312) are provided on the outer side of the slide groove (311), and the laying direction of the plurality of first positioning holes (312) is the same as the extension direction of the slide groove (311). A second positioning hole (423) is provided on the movable plate (42), and the second positioning hole (423) is coaxially arranged with any of the first positioning holes (312). Adjustment bolts (424) are adaptively screwed in the second positioning hole (423) and the first positioning hole (312).

8. A double-sided welding device for a heat exchanger core according to claim 6, characterized in that: The pressing unit (47) includes a base plate (471) and a plurality of pressure strips (472). The top of the base plate (471) is connected to the vertical end of the pressure rod (453). The top of the base plate (471) is provided with a plurality of through holes (4710). The through holes (4710) are threaded holes. The upper part of the pressure strip (472) is adaptively screwed into the through holes (4710). The bottoms of the plurality of pressure strips (472) are in contact with the top of the workpiece (5).

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