A welding assembly for heat exchanger

Abstract

The present invention relates to the field of welding facilities, and in particular to a welding assembly for a heat exchanger, comprising a welding table, a bracket is embedded through the middle of the upper end of the welding table, a U-shaped limiting groove is provided on the bracket, a welding piece is installed at the rear of the upper end of the welding table, and the welding piece is located directly behind the bracket. The upper end surface of the welding table is symmetrically fixed with two support frames with the bracket as the symmetry center, and the opposite surfaces of the two support frames are penetrated by elastically installed limiting frames, and the opposite surfaces of the two limiting frames are provided with positioning grooves, and the front and rear end edges of the limiting frames are connected to a top seat, and the upper ends of the two support frames are elastically installed with a press frame, and both ends of the press frame are penetrated and embedded with limiting columns. The present invention improves the convenience during welding, and avoids the phenomenon of the mounting seat tipping over during welding, while ensuring the welding quality and ensuring that the workpiece can be smoothly taken out after welding.

Description

Technical Field

[0001] The invention relates to the field of welding facilities, in particular to a welding assembly for a heat exchanger. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. During the production process of the heat exchanger, it is generally necessary to weld a mounting base at the bottom for subsequent installation. However, in the actual welding process, in order to ensure the accuracy of the welding position of the mounting base, workers are required to measure and locate the welding position of the bottom of the heat exchanger in advance. The operation process is quite cumbersome, which makes welding inconvenient. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a welding assembly for a heat exchanger.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a welding assembly for a heat exchanger, including a welding table, a bracket is embedded through the middle of the upper end of the welding table, a U-shaped limit groove is provided on the bracket, a welding part is installed at the rear of the upper end of the welding table, the welding part is located directly behind the bracket, and two support frames are symmetrically fixedly installed on the upper end surface of the welding table with the bracket as the symmetry center, the opposite surfaces of the two support frames are penetrated by elastically installed limit frames, the opposite surfaces of the two limit frames are provided with positioning grooves, the front and rear end edges of the limit frames are connected with top seats, the upper ends of the two support frames are elastically installed with pressure frames, and both ends of the pressure frames are penetrated and embedded with limit columns.

[0005] Preferably, a stand is fixedly installed at the lower end of the welding table, the front edge of the U-shaped limit groove is arranged in an arc shape, guide holes are penetrated through the opposite surfaces of the two support frames, the limit frame slides and fits inside the guide hole, and an extension frame is fixedly installed on the outer surface of the support frame, the extension frame and the support frame are integrally formed, the limit frame extends into the interior of the extension frame, and the side edge of the positioning groove is inclined.

[0006] Preferably, the inner front and rear end surfaces of the extension frame are fixedly installed with guide ridges, and the two guide ridges respectively pass through the front and rear end surfaces of the limiting frame, and a convex cap is fixedly installed in the middle of the side of the limiting frame, and a pulling rod is coaxially fixedly installed on the side of the convex cap, and the pulling rod passes through the side of the extension frame, and the pulling rod is slidably matched with the extension frame, and a No. 1 holding ring is fixedly installed on the end of the pulling rod.

[0007] Preferably, limiting ears are fixedly installed at the edges of the upper and lower end surfaces of the limiting frame, and the limiting ears are fitted to the side surfaces of the supporting frame. A spring body is wrapped around the outer side of the pulling rod, one end of the spring body is fixed to the side surface of the convex cap, and the other end of the spring body is fixed to the inner side surface of the extending frame. Guide grooves are provided on the front and rear end surfaces of the limiting frame, and the guide ridges are slidably fitted in the interior of the guide grooves. An L-shaped ear is fixedly installed on the side surface of the top seat, and the end of the L-shaped ear is fixed to the limiting frame.

[0008] Preferably, an extension seat is fixedly installed on the upper end of the support frame, and guide rods are fixedly installed on both ends of the extension seat, and the outer surfaces of the two guide rods are slidably fitted with pressing ears, and an extension frame is fixedly installed between the opposite ends of the two pressing ears, and the end of the extension frame is fixed to the middle part of the upper end of the pressing frame, and the lower end edge of the limit column is set at a bevel.

[0009] Preferably, a pressure cap is coaxially embedded in the upper end of the guide rod, a compression spring is wound around the outer side of the guide rod, the lower end of the compression spring is fixed to the upper end of the pressure ear, the upper end of the compression spring is fixed to the lower end of the pressure cap, and a No. 2 holding ring is fixedly installed on the upper end of the extension frame.

[0010] Preferably, the welding part includes a bearing seat fixedly mounted on the rear part of the upper end of the welding table, the bearing seat is located directly behind the bracket, a threaded rod is rotatably mounted on the middle part of the upper end of the bearing seat, a threaded sleeve is screwed on the outer surface of the threaded rod, a movable table is fixedly mounted on the upper end surface of the threaded sleeve, the upper end of the movable table is connected to a gun rack, both ends of the gun rack are connected to welding guns, and the two welding guns are staggered.

[0011] Preferably, a servo motor is fixedly mounted at the rear edge of the upper end of the bearing seat, the output end of the servo motor is fixed to the end of the threaded rod, a fixed seat is fixedly mounted in the middle of the upper end of the movable platform, the gun rack is penetrated and embedded in the interior of the fixed seat, sliding seats are fixedly mounted at both side edges of the lower end of the movable platform, sliding rails are fixedly mounted at both side edges of the upper end surface of the bearing seat, and the sliding seat is slidably mounted on the sliding rails.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Place the heat exchanger in the U-shaped limit groove on the bracket for limiting. At the same time, the upper part of the heat exchanger fits against the upper end of the bracket and is supported by the bracket. Then, place the mounting base on the top base. At this time, the ribs of the mounting base fit into the positioning groove on the limit frame to limit the mounting base, that is, to position the mounting base at the bottom of the heat exchanger. The process does not require workers to measure and position in advance, thereby effectively improving the convenience of welding.

[0014] 2. Under the action of the clamping spring, the pressing ear can be pressed, and then the pressing frame at the end of the extended frame can be pressed, so that the limit column at the end of the pressing frame can be inserted into the mounting hole on the mounting seat, and the mounting seat is limited in the vertical direction to avoid the mounting seat from tipping over during welding. When the clamping spring inserts the limit column into the mounting hole on the mounting seat, the pressing frame will also be pressed on the mounting seat synchronously, and the mounting seat will be firmly pressed against the bottom of the heat exchanger to make it fully contact, avoiding the appearance of welds after welding, thereby ensuring its welding quality.

[0015] 3. After welding, directly pull the No. 2 holding ring to move the pressure frame and the limit column pressed by the compression spring upward, so that they are out of the mounting seat and the mounting hole. Then directly pull the No. 1 holding ring to move the limit frame pushed out by the spring body, so that the limit frame can slide in the guide hole. At the same time, the guide ridge slides in the guide groove to assist the movement of the limit frame, and the limit frame is put into the extension frame, so that the rib plate of the mounting seat can be out of the positioning groove on the limit frame, thereby loosening the limit on the mounting seat and ensuring that the workpiece can be smoothly taken out after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a welding assembly for a heat exchanger according to the present invention;

[0017] Figure 2 It is a schematic diagram of another viewing angle of a welding assembly for a heat exchanger of the present invention;

[0018] Figure 3 It is a schematic diagram of the extended frame of a welding assembly for a heat exchanger of the present invention;

[0019] Figure 4 It is a schematic diagram of another perspective of the extended frame of a welding assembly for a heat exchanger of the present invention;

[0020] Figure 5 A welding assembly for a heat exchanger according to the present invention Figure 2 A magnified view of middle;

[0021] Figure 6 This is a view of the use of a welding assembly for a heat exchanger of the present invention;

[0022] Figure 7 A welding assembly for a heat exchanger according to the present invention Figure 6 Enlarged view of middle B;

[0023] Figure 8 The figure is a schematic diagram of a heat exchanger having a welding assembly for a heat exchanger according to the present invention.

[0024] In the figure: 1, welding table; 2, table; 3, bracket; 4, support frame; 5, U-shaped limit groove; 6, extension frame; 7, limit column; 8, servo motor; 9, bearing seat; 10, slide rail; 11, slide seat; 12, threaded rod; 13, threaded sleeve; 14, moving table; 15, fixed seat; 16, guide convex ridge; 17, pulling rod; 18, spring body; 19, No. 1 holding ring; 20, convex cap; 21, limit frame; 22, limit ear; 23, guide slide groove; 24, L-shaped ear; 25, top seat; 26, positioning groove; 27, guide rod; 28, pressure cap; 29, pressure ear; 30, extension frame; 31, No. 2 holding ring; 32, pressure frame; 33, gun rack; 34, guide hole; 35, extension seat; 36, compression spring; 37, welding gun; 38, heat exchanger; 39, mounting seat. DETAILED DESCRIPTION

[0025] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0026] like Figure 1-Figure 8 A welding assembly for a heat exchanger shown in the figure comprises a welding platform 1, a bracket 3 is embedded through the middle of the upper end of the welding platform 1, the bracket 3 plays the role of supporting the heat exchanger 38, a U-shaped limiting groove 5 is provided on the bracket 3, the arc section of the U-shaped limiting groove 5 fits the surface of the heat exchanger 38, and the heat exchanger 38 is positioned, a welding piece is installed at the rear of the upper end of the welding platform 1, and the welding piece is located directly behind the bracket 3, and the upper end surface of the welding platform 1 is symmetrically fixed with two support frames 4 with the bracket 3 as the symmetry center, and the support frames 4 play the role of bearing, and the opposite surfaces of the two support frames 4 are penetrated by the elastically installed limiting frames 21, and the opposite surfaces of the two limiting frames 21 are provided with positioning grooves 2 6. The positioning groove 26 can fit on the rib plate of the mounting seat 39 to limit the front and rear positions of the mounting seat 39. The rib plate of the mounting seat 39 plays a role in strengthening the strength of the mounting seat 39. The front and rear end edges of the limiting frame 21 are connected to the top seat 25. The top seat 25 can limit the position of the mounting seat 39 so that the limiting column 7 can be aligned with the mounting hole on the mounting seat 39. The upper ends of the two support frames 4 are elastically installed with a pressing frame 32. The two ends of the pressing frame 32 are penetrated and inlaid with the limiting column 7. The diameter of the limiting column 7 is the same as the inner diameter of the mounting hole on the mounting seat 39, so that the limiting column 7 can fit each other after being inserted into the mounting hole on the mounting seat 39 without shaking.

[0027] A stand 2 is fixedly installed at the lower end of the welding table 1, and the stand 2 serves to support the welding table 1. The front edge of the U-shaped limit groove 5 is set in an arc shape, which can facilitate the placement of the heat exchanger 38. The opposite surfaces of the two support frames 4 are penetrated by guide holes 34, and the limit frame 21 slides and fits inside the guide hole 34. The guide hole 34 serves to guide the limit frame 21. The outer surface of the support frame 4 is fixedly installed with an extension frame 6, which is integrally formed with the support frame 4. The extension frame 6 serves to support the limit frame 21. The limit frame 21 extends into the interior of the extension frame 6, and the side edge of the positioning groove 26 is set at an angle, which can facilitate the entry of the ribs of the mounting seat 39.

[0028] The front and rear end surfaces of the extension frame 6 are fixedly installed with guide ribs 16, and the two guide ribs 16 respectively pass through the front and rear end surfaces of the limit frame 21, and the guide ribs 16 serve to further guide the limit frame 21. A convex cap 20 is fixedly installed in the middle of the side of the limit frame 21, and a pulling rod 17 is coaxially fixedly installed on the side of the convex cap 20. The convex cap 20 serves to be pushed by the spring body 18. The pulling rod 17 passes through the side of the extension frame 6, and the pulling rod 17 is slidably matched with the extension frame 6. The pulling rod 17 serves to facilitate pulling the limit frame 21. A No. 1 holding ring 19 is fixedly installed on the end of the pulling rod 17, and the No. 1 holding ring 19 serves to hold the pulling rod 17.

[0029] Limiting ears 22 are fixedly installed at the edges of the upper and lower end surfaces of the limiting frame 21, and the limiting ears 22 are fitted to the side surfaces of the supporting frame 4. The limiting ears 22 play a role in limiting the extension distance of the limiting frame 21. A spring body 18 is wrapped around the outer side of the pulling rod 17, and one end of the spring body 18 is fixed to the side surface of the convex cap 20, and the other end of the spring body 18 is fixed to the inner side surface of the extension frame 6. Guide grooves 23 are provided on the front and rear end surfaces of the limiting frame 21, and the spring body 18 plays a role in pushing the limiting frame 21 out. The guide rib 16 slides and fits inside the guide groove 23, and the guide groove 23 plays a role in cooperating with the guide rib 16. An L-shaped ear 24 is fixedly installed on the side of the top seat 25, and the end of the L-shaped ear 24 is fixed to the limiting frame 21, and the L-shaped ear 24 plays a role in fixing the top seat 25.

[0030] An extension seat 35 is fixedly installed on the upper end of the support frame 4, and guide rods 27 are fixedly installed on both ends of the extension seat 35. The extension seat 35 serves to support the guide rods 27. The outer surfaces of the two guide rods 27 are slidably fitted with pressing ears 29. The guide rods 27 and the pressing ears 29 serve to guide the extension frame 30. An extension frame 30 is fixedly installed between the opposite ends of the two pressing ears 29. The end of the extension frame 30 is fixed to the middle part of the upper end of the pressing frame 32. The lower end edge of the limiting column 7 is set with a bevel, which can be easily inserted into the mounting hole on the mounting seat 39.

[0031] A pressure cap 28 is coaxially embedded in the upper end of the guide rod 27, and a compression spring 36 is wound around the outer side of the guide rod 27. The pressure cap 28 supports the compression spring 36. The lower end of the compression spring 36 is fixed to the upper end of the pressure ear 29. The compression spring 36 presses the pressure frame 32. The upper end of the compression spring 36 is fixed to the lower end of the pressure cap 28. A No. 2 holding ring 31 is fixedly installed on the upper end of the extension frame 30. The No. 2 holding ring 31 facilitates holding to pull the extension frame 30.

[0032] The welding part includes a bearing seat 9 fixedly mounted on the upper rear part of the welding table 1. The bearing seat 9 is located directly behind the bracket 3. The bearing seat 9 serves to support the threaded rod 12. The threaded rod 12 is rotatably mounted on the middle part of the upper end of the bearing seat 9. The outer surface of the threaded rod 12 is screwed with a threaded sleeve 13. The threaded rod 12 and the threaded sleeve 13 serve to drive the moving table 14 to move. The upper end surface of the threaded sleeve 13 is fixedly mounted with the moving table 14. The upper end of the moving table 14 is connected to a gun rack 33. Both ends of the gun rack 33 are connected to welding guns 37. The gun rack 33 serves to fix the welding guns 37. The two welding guns 37 are staggered. The welding guns 37 are connected to an external welding machine for use. Since welding using the welding gun 37 is a prior art and has been widely used, it is not elaborated here.

[0033] A servo motor 8 is fixedly installed at the rear edge of the upper end of the bearing seat 9, and the output end of the servo motor 8 is fixed to the end of the threaded rod 12, and the servo motor 8 plays a role in driving the threaded rod 12 to rotate. A fixed seat 15 is fixedly installed in the middle of the upper end of the moving platform 14, and the gun rack 33 is embedded in the inside of the fixed seat 15. The fixed seat 15 plays a role in fixing the gun rack 33. The sliding seats 11 are fixedly installed at the edges of both sides of the lower end of the moving platform 14, and the edges of both sides of the upper end surface of the bearing seat 9 are fixedly installed. The slide rail 10, the slide seat 11 and the slide rail 10 play a role in guiding the movable platform 14. The slide seat 11 is slidably installed on the slide rail 10. The servo motor 8 drives the threaded rod 12 to rotate, so that the threaded sleeve 13 tightened on the threaded rod 12 can move, and then drives the movable platform 14 to move. At this time, the slide seat 11 slides on the slide rail 10, assisting the movable platform 14 to move, and the moving movable platform 14 is used to drive the two welding guns 37 to move, and at the same time, the joints between the two mounting seats 39 and the heat exchanger 38 are welded.

[0034] During welding, the heat exchanger 38 is placed in the U-shaped limiting groove 5 on the bracket 3 for limiting, and the upper part of the heat exchanger 38 is attached to the upper end of the bracket 3 and supported by the bracket 3. Then, the two mounting seats 39 are attached to the top seats 25 on the two limiting frames 21. At this time, the ribs of the mounting seats 39 are attached to the positioning grooves 26 on the limiting frames 21, and the mounting seats 39 are limited, that is, the mounting seats 39 are positioned at the bottom of the heat exchanger 38, and the spring 36 is pressed against the pressing ear. 29 is pressed, and then the pressing frame 32 at the end of the extending frame 30 is pressed, so that the limiting column 7 at the end of the pressing frame 32 can be inserted into the mounting hole on the mounting seat 39, and the mounting seat 39 is limited in the vertical direction to prevent the mounting seat 39 from tipping over during the welding process. At this time, the pressing frame 32 is synchronously pressed on the mounting seat 39, and the mounting seat 39 is firmly pressed against the bottom of the heat exchanger 38 to make it fully contact, and then the servo motor 8 works to drive the threaded rod 12 to rotate The movable platform 14 is used to drive the two welding guns 37 to move, and the joints between the two mounting seats 39 and the heat exchanger 38 are welded at the same time. After the welding is completed, the second holding ring 31 is directly pulled to allow the pressing frame 32 and the limiting column 7 pressed by the compression spring 36 to move up and separate from the mounting seat 39 and the mounting hole. Then, the first holding ring 19 is directly pulled to allow the limiting frame 21 pushed out by the spring body 18 to move, so that the limiting frame 21 can slide in the guide hole 34. At the same time, the guiding ridge 16 slides in the guiding groove 23, and the limiting frame 21 is assisted to move, so that the limiting frame 21 is collected in the extending frame 6, so that the rib plate of the mounting seat 39 can be separated from the positioning groove 26 on the limiting frame 21, thereby loosening the limit of the mounting seat 39, and then it can be taken out.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding assembly for a heat exchanger, comprising a welding table (1), characterized in that: A bracket (3) is embedded in the middle of the upper end of the welding platform (1), and a U-shaped limiting groove (5) is provided on the bracket (3). A welding piece is installed at the rear of the upper end of the welding platform (1), and the welding piece is located directly behind the bracket (3). Two support frames (4) are symmetrically fixedly installed on the upper end surface of the welding platform (1) with the bracket (3) as the symmetry center. The opposite surfaces of the two support frames (4) are penetrated by elastically installed limiting frames (21), and the opposite surfaces of the two limiting frames (21) are provided with positioning grooves (26). The front and rear end edges of the limiting frames (21) are connected to the top seats (25). The upper ends of the two support frames (4) are elastically installed with pressure frames (32), and both ends of the pressure frames (32) are penetrated and embedded with limiting columns (7). A stand (2) is fixedly mounted on the lower end of the welding table (1); the front edge of the U-shaped limiting groove (5) is arranged in an arc shape; guide holes (34) are penetrated through the opposite surfaces of the two support frames (4); the limiting frame (21) is slidably fitted inside the guide hole (34); a protruding frame (6) is fixedly mounted on the outer surface of the support frame (4); the protruding frame (6) and the support frame (4) are integrally formed; the limiting frame (21) extends into the protruding frame (6); and the side edge of the positioning groove (26) is arranged in an inclined manner; The front and rear end surfaces of the extension frame (6) are both fixedly mounted with guide ridges (16), the two guide ridges (16) respectively pass through the front and rear end surfaces of the limiting frame (21), a convex cap (20) is fixedly mounted on the middle of the side surface of the limiting frame (21), a pulling rod (17) is coaxially fixedly mounted on the side surface of the convex cap (20), the pulling rod (17) passes through the side surface of the extension frame (6), the pulling rod (17) is slidably matched with the extension frame (6), and a No. 1 holding ring (19) is fixedly mounted on the end of the pulling rod (17); The limiting frame (21) is fixedly provided with limiting ears (22) at the edges of the upper and lower end surfaces, and the limiting ears (22) are fitted to the side of the support frame (4). A spring body (18) is wound around the outer side of the pulling rod (17), and one end of the spring body (18) is fixed to the side of the convex cap (20), and the other end of the spring body (18) is fixed to the inner side of the extension frame (6). The front and rear end surfaces of the limiting frame (21) are provided with guide grooves (23), and the guide ribs (16) are slidably fitted inside the guide grooves (23). An L-shaped ear (24) is fixedly provided on the side of the top seat (25), and the end of the L-shaped ear (24) is fixed to the limiting frame (21); The upper end of the support frame (4) is fixedly mounted with a protruding seat (35), both ends of the protruding seat (35) are fixedly mounted with guide rods (27), the outer surfaces of the two guide rods (27) are slidably fitted with pressing ears (29), an extending frame (30) is fixedly mounted between the opposite ends of the two pressing ears (29), the end of the protruding frame (30) is fixed to the middle of the upper end of the pressing frame (32), and the lower end edge of the limiting column (7) is arranged in a beveled shape; The upper end of the guide rod (27) is coaxially inlaid with a pressure cap (28), the outer side of the guide rod (27) is wound with a compression spring (36), the lower end of the compression spring (36) is fixed to the upper end of the pressure ear (29), the upper end of the compression spring (36) is fixed to the lower end of the pressure cap (28), and the upper end of the extension frame (30) is fixedly mounted with a No. 2 holding ring (31).

2. A welding assembly for a heat exchanger according to claim 1, characterized in that: The welding part comprises a bearing seat (9) fixedly mounted on the rear part of the upper end of the welding platform (1), the bearing seat (9) being located directly behind the bracket (3), a threaded rod (12) being rotatably mounted on the middle part of the upper end of the bearing seat (9), a threaded sleeve (13) being screwed on the outer surface of the threaded rod (12), a movable platform (14) being fixedly mounted on the upper end surface of the threaded sleeve (13), the upper end of the movable platform (14) being connected to a gun rack (33), both ends of the gun rack (33) being connected to welding guns (37), and the two welding guns (37) being arranged in a staggered manner.

3. A welding assembly for a heat exchanger according to claim 2, characterized in that: A servo motor (8) is fixedly mounted at the rear edge of the upper end of the bearing seat (9), and the output end of the servo motor (8) is fixed to the end of the threaded rod (12). A fixed seat (15) is fixedly mounted at the middle of the upper end of the moving platform (14), and the gun rack (33) is embedded in the interior of the fixed seat (15). A slide seat (11) is fixedly mounted at both side edges of the lower end of the moving platform (14), and a slide rail (10) is fixedly mounted at both side edges of the upper end surface of the bearing seat (9), and the slide seat (11) is slidably mounted on the slide rail (10).

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