Welding equipment for heat exchanger production

Abstract

The utility model provides welding equipment for heat exchanger production, and belongs to the technical field of heat exchanger production. The welding equipment for heat exchanger production comprises an auxiliary mechanism, a welding mechanism and a fixing mechanism, the auxiliary mechanism comprises a workbench, a supporting seat is installed at the bottom end of the workbench, a pair of moving frames are movably inserted into the workbench, a pair of U-shaped plates are fixedly installed on one side of one moving frame, and a pair of clamping plates are fixedly installed on the other side of the other moving frame. A clamping plate is mounted between the pair of U-shaped plates through a mounting rod, the other side of the clamping plate is rotationally connected with a rotary disc, a first motor is fixedly mounted on one side of the clamping plate, the output end of the first motor is in transmission connection with the rotary disc, the welding mechanism comprises a mounting frame and a laser welding gun, and the fixing mechanism comprises a pair of fixing plates. And automatic push rods are inserted into the bottom ends of the front faces and the back faces of the pair of fixing plates, the output ends of the automatic push rods penetrate through the fixing plates, moving plates are installed, the welding effect can be effectively improved, and high practical value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger production, and more specifically, to a welding device for heat exchanger production. Background Technique

[0002] A tubular heat exchanger is a shell-and-tube heat exchanger with the wall surface of the tube bundle enclosed in a shell as the heat transfer surface. This type of heat exchanger has a simple structure, low cost, a relatively wide flow cross-section, is easy to clean scale, can be made of various structural materials, and can be used under high temperature and high pressure. It is the most widely used type at present.

[0003] Based on the above, the inventor found the following problems: Currently, when producing large-sized tubular heat exchangers, at least two shells need to be welded. When welding a pair of shells, since the shells are cylindrical and the weld seams are annular, it is very inconvenient to weld around the weld seams.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies to provide a welding device for heat exchanger production, with the expectation of achieving a more practical value. Summary of the Invention

[0005] To solve the above technical problems, an embodiment of the utility model provides a welding device for heat exchanger production, which is specifically realized through the following technical solutions:

[0006] A welding device for heat exchanger production includes an auxiliary mechanism, a welding mechanism, and a fixing mechanism. The auxiliary mechanism includes a workbench, a support seat is installed at the bottom end of the workbench, and a pair of moving frames are movably inserted into the interior of the workbench. A pair of U-shaped plates are fixedly installed on one side of one of the moving frames. A clamping plate is installed between the pair of U-shaped plates through a mounting rod. The other sides of the clamping plates are rotatably connected to turntables. A first motor is fixedly installed on one side of the clamping plate, and the output end of the first motor is in transmission connection with the turntable. The welding mechanism includes a mounting frame and a laser welding gun. The bottom end of the mounting frame is fixedly connected to the top end of the workbench. The fixing mechanism includes a pair of fixing plates, and automatic push rods are inserted into the front and back bottom ends of the pair of fixing plates. The output ends of the automatic push rods penetrate through the fixing plates and are installed with moving plates.

[0007] Furthermore, telescopic rods are inserted into the top and bottom ends of the turntable. The output ends of the telescopic rods extend into the interior of the turntable and are fixedly connected to clamping plates, and the clamping plates are arc-shaped.

[0008] The beneficial effects of adopting the above further solution are as follows. By setting the telescopic rod, when the telescopic rod is activated, it is convenient for a pair of clamping plates to clamp both ends of the shell of the tubular heat exchanger, and the clamping plates are set in an arc shape, which is convenient for fitting with the outer part of the tube body of the tubular heat exchanger.

[0009] Furthermore, a power box is installed at the bottom end of the workbench. A worm is rotatably connected inside the power box. A second motor is installed on the front surface of the power box, and the output end of the second motor is in transmission connection with the worm.

[0010] The beneficial effects of adopting the above further solution are as follows. By installing the second motor, when it works, it is convenient to drive the worm to rotate.

[0011] Furthermore, a pair of mounting plates are fixedly installed at the center of the interior of the workbench. A transmission shaft is rotatably connected between the pair of mounting plates through bearings. A worm gear is sleeved on the transmission shaft, and the worm gear meshes with the worm.

[0012] The beneficial effects of adopting the above further solution are as follows. By sleeving the worm gear on the outside of the transmission shaft and the worm gear meshing with the worm, when the worm rotates, it is convenient for the worm gear to rotate, and then the rotation of the transmission shaft is realized.

[0013] Furthermore, a slide rod and a screw rod are respectively installed between the inner wall of the workbench and the pair of mounting plates. Both ends of the transmission shaft extend into the interior of the mounting plates and are both in transmission connection with the screw rod.

[0014] The beneficial effects of adopting the above further solution are as follows. By the transmission connection between the transmission shaft and the screw rod, when the transmission shaft rotates, it is convenient for the screw rod to rotate.

[0015] Furthermore, both the slide rod and the screw rod penetrate through the moving frame, and the slide rod is slidably connected with the moving frame.

[0016] The beneficial effects of adopting the above further solution are as follows. By passing the slide rod and the screw rod through the moving frame, when the screw rod rotates, the moving frame will realize linear motion under the rotational action of the screw rod and the sliding action of the slide rod.

[0017] Furthermore, a cage is installed at the bottom end of the mounting frame, and a cylinder is installed at the top end of the mounting frame. The output end of the cylinder penetrates through the mounting frame and a piston rod is installed. One end of the piston rod extends outside the cage and is fixedly connected with the top end of the laser welding gun.

[0018] The beneficial effects of adopting the above further solution are as follows. By installing the cylinder, when it works, it is convenient to push the piston rod and the laser welding gun, so that the laser welding gun moves downward and approaches the welding position of the tube body of the tubular heat exchanger. By installing the cage, it is convenient for the piston rod and the laser welding gun to move stably.

[0019] Further, a pair of the fixing plates are respectively arranged on two sides of the mounting frame, and the bottoms of the pair of fixing plates are fixedly connected to the top end of the workbench, and the bottom end of the automatic push rod is fixedly connected to the top end of the workbench.

[0020] The beneficial effects of the present utility model are as follows: A welding device for heat exchanger production obtained by the above design in the present utility model. For this kind of welding device for heat exchanger production, by installing a second motor, when it works, it is convenient to drive the worm to rotate, thereby realizing the rotation of the worm wheel. When the worm wheel rotates, the transmission shaft rotates. When the worm wheel rotates forward, it further drives a pair of screw rods to rotate, so that the moving frame and the clamping plate move out of the workbench under the rotation of the screw rods and the sliding of the sliding rods. By installing an automatic push rod, it pushes the moving plate upward, places the tube bodies of two tubular heat exchangers to be welded on the fixing plate, and under the action of the automatic push rod, the moving plate returns to its original position to fix the tube bodies of the tubular heat exchangers. When the worm wheel rotates in reverse, the transmission shaft rotates in reverse to drive a pair of screw rods to rotate in reverse, so that the moving frame slowly moves into the workbench under the rotation of the screw rods and the sliding of the sliding rods. At the same time, a pair of turntables will clamp a pair of tube bodies of the tubular heat exchangers. At the same time, through the telescopic rod, it pushes the clamping plate to fit with the outside of the tube body of the tubular heat exchanger. By installing a cylinder, when it works, it is convenient to push the piston rod and the laser welding gun, so that the laser welding gun moves downward and approaches the welding position of the tube body of the tubular heat exchanger. By installing a first motor, when it works, it is convenient for the turntable to rotate, and thus it is convenient to perform circular welding on a pair of tube bodies of the tubular heat exchangers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a welding device for heat exchanger production provided by the present utility model;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the moving frame of a welding device for heat exchanger production provided by the present utility model;

[0023] Figure 3 It is a side sectional schematic diagram of the mounting frame and the holding frame of a welding device for heat exchanger production provided by the present utility model;

[0024] Figure 4 It is a three-dimensional unfolded schematic diagram of the fixing plate and the moving plate of a welding device for heat exchanger production provided by the present utility model;

[0025] Figure 5 It is a top sectional schematic diagram of the workbench of a welding device for heat exchanger production provided by the present utility model.

[0026] In the figure: 100, auxiliary mechanism; 1001, support base; 1002, workbench; 1003, mounting plate; 1004, transmission shaft; 1005, worm gear; 1006, sliding rod; 1007, screw rod; 1008, moving frame; 1009, U-shaped plate; 1010, clamping plate; 1011, first motor; 1012, turntable; 1013, telescopic rod; 1014, clamping plate; 1015, power box; 1016, worm; 1017, second motor; 200, welding mechanism; 2001, mounting frame; 2002, cage; 2003, cylinder; 2004, piston rod; 2005, laser welding gun; 300, fixing mechanism; 3001, fixing plate; 3002, automatic push rod; 3003, moving plate. Detailed implementation mode

[0027] To make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Embodiment 1

[0028] The present utility model provides the following technical solutions: As Figures 1-5As shown in the figure, a welding device for heat exchanger production includes an auxiliary mechanism 100, a welding mechanism 200, and a fixing mechanism 300. The auxiliary mechanism 100 includes a workbench 1002. A support base 1001 is installed at the bottom of the workbench 1002, and a pair of movable frames 1008 are movably inserted into the interior of the workbench 1002. A pair of U-shaped plates 1009 are fixedly installed on one side of one of the movable frames 1008. A clamping plate 1010 is installed between the pair of U-shaped plates 1009 through a mounting rod. The other sides of the clamping plates 1010 are rotatably connected to turntables 1012. A first motor 1011 is fixedly installed on one side of the clamping plate 1010. The output end of the first motor 1011 is in transmission connection with the turntable 1012. The welding mechanism 200 includes a mounting frame 2001 and a laser welding gun 2005. The bottom end of the mounting frame 2001 is fixedly connected to the top end of the workbench 1002. The fixing mechanism 300 includes a pair of fixing plates 3001. Automatic push rods 3002 are inserted into the front and back bottom ends of the pair of fixing plates 3001. The output ends of the automatic push rods 3002 penetrate through the fixing plates 3001 and are installed with movable plates 3003. By installing the support base 1001, it is convenient to support the workbench 1002. By movably inserting the movable frames 1008 into the interior of the workbench 1002, after the movable frames 1008 are moved out of the interior of the workbench 1002, a pair of tube bodies of the tubular heat exchanger are placed on the fixing plates 3001. By installing the first motor 1011, when it works, it is convenient for the turntable 1012 to rotate, so that the pair of tube bodies of the tubular heat exchanger rotate. By installing the laser welding gun 2005, it is convenient to weld the connection parts of the pair of tube bodies of the tubular heat exchanger. By installing the automatic push rods 3002, when they work, it is convenient to push the movable plates 3003, and thus it is convenient to place the tube bodies of the tubular heat exchanger at the fixing plates 3001. After the automatic push rods 3002 return to their original positions, the tube bodies of the tubular heat exchanger are fixed. Embodiment 2

[0029] Refer to Figures 1-5As shown in the figure, telescopic rods 1013 are inserted at both the top and bottom of the turntable 1012. The output ends of the telescopic rods 1013 extend into the interior of the turntable 1012 and are fixedly connected to clamping plates 1014. The clamping plates 1014 are arc-shaped. A power box 1015 is installed at the bottom of the workbench 1002. A worm 1016 is rotatably connected inside the power box 1015. A second motor 1017 is installed on the front of the power box 1015. The output end of the second motor 1017 is drivingly connected to the worm 1016. A pair of mounting plates 1003 are fixedly installed at the center of the interior of the workbench 1002. A transmission shaft 1004 is rotatably connected between the pair of mounting plates 1003 through bearings. A worm gear 1005 is sleeved on the transmission shaft 1004. The worm gear 1005 meshes with the worm 1016. A slide bar 1006 and a screw rod 1007 are respectively installed between the inner wall of the workbench 1002 and the pair of mounting plates 1003. Both ends of the transmission shaft 1004 extend into the interior of the mounting plates 1003 and are both drivingly connected to the screw rod 1007. The slide bar 1006 and the screw rod 1007 both penetrate through the moving frame 1008, and the slide bar 1006 is slidably connected to the moving frame 1008. By installing the second motor 1017, when it works, it is convenient to drive the worm 1016 to rotate, and since the worm gear 1005 meshes with the worm 1016, it is convenient for the worm gear 1005 to rotate, thereby realizing the rotation of the transmission shaft 1004, causing the pair of screw rods 1007 to rotate, and facilitating the linear movement of the moving frame 1008 under the rotational action of the screw rod 1007 and the sliding action of the slide bar 1006. Embodiment 3

[0030] Refer to Figures 1-5 As shown in the figure, a cage 2002 is installed at the bottom of the mounting frame 2001, and a cylinder 2003 is installed at the top of the mounting frame 2001. The output end of the cylinder 2003 penetrates through the mounting frame 2001 and a piston rod 2004 is installed. One end of the piston rod 2004 extends outside the cage 2002 and is fixedly connected to the top of the laser welding gun 2005. A pair of fixing plates 3001 are respectively arranged on both sides of the mounting frame 2001, and the bottoms of the pair of fixing plates 3001 are fixedly connected to the top of the workbench 1002. The bottom of the automatic push rod 3002 is fixedly connected to the top of the workbench 1002. By installing the cylinder 2003, when it works, it is convenient to push the piston rod 2004 and the laser welding gun 2005, so that the laser welding gun 2005 moves downward and approaches the welding position of the tube body of the tubular heat exchanger, thereby facilitating the laser welding gun 2005 to weld the welding position.

[0031] Specifically, the working principle of the welding equipment for heat exchanger production: When in use, first start the second motor 1017 to rotate the worm 1016, drive the worm wheel 1005 to rotate forward, rotate the transmission shaft 1004 and drive a pair of screw rods 1007 to rotate, so that the moving frame 1008 and the clamping plate 1010 completely move out of the workbench 1002 under the rotation of the screw rods 1007 and the sliding of the slide rods 1006, and move away from the fixed plate 3001 and the moving plate 3003. Then start the automatic push rod 3002 to push the moving plate 3003 to move upward. Then place the tube bodies of two tubular heat exchangers to be welded on the fixed plate 3001. Under the action of the automatic push rod 3002, the moving plate 3003 returns to its original position to fix the tube bodies of the tubular heat exchanger. When the worm wheel 1005 rotates in reverse, the transmission shaft 1004 rotates in reverse to drive a pair of screw rods 1007 to rotate in reverse, so that the moving frame 1008 slowly moves into the workbench 1002 under the rotation of the screw rods 1007 and the sliding of the slide rods 1006. At the same time, a pair of turntables 1012 will clamp a pair of tube bodies of the tubular heat exchanger. Then start the telescopic rod 1013 to push the clamping plate 1014 to fit against the outside of the tube body of the tubular heat exchanger. By starting the cylinder 2003, push the piston rod 2004 and the laser welding gun 2005 to make the laser welding gun 2005 move downward and approach the connection welding part of the tube body of the tubular heat exchanger. At the same time, start the first motor 1011 to make a pair of turntables 1012 rotate simultaneously and synchronously in the same direction, so that the connection parts of a pair of tubular heat exchangers are circularly welded under the action of the laser welding gun 2005.

[0032] It should be noted that for a welding equipment for heat exchanger production, the specific model specifications of the first motor 1011, the telescopic rod 1013, the second motor 1017, the cylinder 2003, the laser welding gun 2005 and the automatic push rod 3002 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0033] For a welding equipment for heat exchanger production, the power supply and its principle of the first motor 1011, the telescopic rod 1013, the second motor 1017, the cylinder 2003, the laser welding gun 2005 and the automatic push rod 3002 are clear to those skilled in the art and will not be elaborated here.

[0034] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding device for heat exchanger production, characterized in that: The invention comprises an auxiliary mechanism (100), a welding mechanism (200) and a fixing mechanism (300), wherein the auxiliary mechanism (100) comprises a workbench (1002), a support seat (1001) is installed at the bottom end of the workbench (1002), and a pair of movable frames (1008) are movably inserted inside the workbench (1002), wherein a pair of U-shaped plates (1009) are fixedly installed on one side of one of the movable frames (1008), a clamping plate (1010) is installed between the pair of U-shaped plates (1009) via a mounting rod, and a turntable (1012) is rotatably connected to the other side of the clamping plate (1010), and the clamping plate (1010) is fixedly installed on one side of the pair of U-shaped plates (1009). A first motor (1011) is fixedly mounted on one side of the workbench (1002), the output end of the first motor (1011) being transmission-connected to the turntable (1012), the welding mechanism (200) comprising a mounting frame (2001) and a laser welding gun (2005), the bottom end of the mounting frame (2001) being fixedly connected to the top end of the workbench (1002), the fixing mechanism (300) comprising a pair of fixing plates (3001), automatic push rods (3002) being inserted at the bottom ends of the front and back sides of the pair of fixing plates (3001), the output ends of the automatic push rods (3002) both passing through the fixing plates (3001), and being installed with moving plates (3003).

2. A welding device for heat exchanger production according to claim 1, characterized in that: Telescopic rods (1013) are inserted into the top and bottom ends of the rotating disk (1012); output ends of the telescopic rods (1013) extend into the interior of the rotating disk (1012) and are fixedly connected to clamps (1014); the clamps (1014) are in an arc shape.

3. A welding device for heat exchanger production according to claim 2, characterized in that: A power box (1015) is installed at the bottom end of the workbench (1002), and a worm (1016) is rotatably connected inside the power box (1015). A second motor (1017) is installed on the front side of the power box (1015), and an output end of the second motor (1017) is drivingly connected to the worm (1016).

4. A welding device for heat exchanger production according to claim 3, characterized in that: A pair of mounting plates (1003) are fixedly mounted at the inner center of the workbench (1002); a transmission shaft (1004) is rotatably connected between the pair of mounting plates (1003) via a bearing; a worm wheel (1005) is sleeved on the transmission shaft (1004); and the worm wheel (1005) and the worm (1016) are meshed with each other.

5. A welding device for heat exchanger production according to claim 4, characterized in that: A sliding rod (1006) and a screw rod (1007) are respectively installed between the inner wall of the workbench (1002) and a pair of mounting plates (1003), and both ends of the transmission shaft (1004) extend to the inside of the mounting plate (1003) and are both connected to the screw rod (1007) in a transmission manner.

6. A welding device for heat exchanger production according to claim 5, characterized in that: The sliding rod (1006) and the screw rod (1007) both penetrate the moving frame (1008), and the sliding rod (1006) and the moving frame (1008) are slidably connected.

7. A welding device for heat exchanger production according to claim 1, characterized in that: A retaining frame (2002) is installed at the bottom end of the mounting frame (2001), and a cylinder (2003) is installed at the top end of the mounting frame (2001); the output end of the cylinder (2003) passes through the mounting frame (2001) and is installed with a piston rod (2004); one end of the piston rod (2004) extends to the outside of the retaining frame (2002) and is fixedly connected to the top end of the laser welding gun (2005).

8. The welding equipment for heat exchanger production according to claim 1, characterized in that: A pair of the fixing plates (3001) are respectively arranged on both sides of the mounting frame (2001), and the bottom ends of the pair of the fixing plates (3001) are fixedly connected to the top end of the workbench (1002), and the bottom end of the automatic push rod (3002) is fixedly connected to the top end of the workbench (1002).

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