Novel pulse welding device

Abstract

The utility model relates to the technical field of pulse welding devices, in particular to a novel pulse welding device which comprises a machine table and a pulse welding main machine, the pulse welding main machine is fixedly arranged in the middle of the top of the machine table, and two sets of welding jigs used for clamping pipes to be welded are fixedly arranged on the edge of the top of the machine table. A driving mechanism used for driving the welding jig to rotate is installed in the machine table, the preheating mechanism is adopted for conducting preheating and post-heat treatment on the pipe to be welded, the cooling speed after welding can be effectively reduced, the hardening tendency is reduced, and cracks are prevented; meanwhile, the screw pitches of the two groups of heating copper pipes for preheating and post-heating are gradually increased from the adjacent position to the outer side, so that the temperature of the pipe to be welded is gradually reduced from the butt welding position to the two ends, the temperature is excessively gentle, the cliff type temperature difference can be avoided, the temperature difference of a heat affected zone is reduced, and the welding stress is favorably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pulse welding devices, in particular to a novel pulse welding device. Background Art

[0002] Pulse welding equipment is an advanced welding technology that uses rapid, intermittent pulses of electrical current to heat the metal and achieve welds. This equipment provides precise control of heat input and is suitable for welding a variety of materials, including but not limited to stainless steel, aluminum, copper, and their alloys.

[0003] Pulse welding devices are widely used in electronics, microelectronics, medical equipment, aerospace, automobile manufacturing and other industries, but they still have certain problems: 1) When using pulse welding devices to butt-weld pipes, the pipes cool too quickly, tend to harden, and are prone to cracking; 2) There is a large temperature difference in the heat-affected zone, and the welding stress is large; Therefore, in view of the above situation, there is an urgent need to develop a new type of pulse welding device to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of the present utility model is to provide a novel pulse welding device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a novel pulse welding device, comprising a machine platform and a pulse welding main unit, the pulse welding main unit being fixedly mounted in the middle of the top of the machine platform, two sets of welding jigs for clamping the pipes to be welded being fixedly mounted on the top edge of the machine platform, a driving mechanism for driving the welding jigs to rotate being installed inside the machine platform, and a preheating mechanism for preheating the pipes to be welded being installed in the middle of the top of the machine platform;

[0006] The preheating mechanism includes a slide rail, a slider, a micro electric cylinder, a mounting plate, an interface and a heating copper tube. The slide rail is horizontally fixed on the upper surface of the machine. Two sliders are slidably installed on the slide rail. The micro electric cylinder is horizontally installed at the end of the slide rail, and the slider is driven and connected to the micro electric cylinder. The mounting plate is fixed on the upper surface of the slider. The two interfaces are arranged at the diagonal positions of the mounting plate. The two ends of the heating copper tube are respectively connected to the interfaces and fixed.

[0007] Preferably, the two groups of heating copper tubes are spiral-shaped, and the pitch of the two groups of heating copper tubes gradually increases from adjacent positions toward the outside. Specifically, by setting the heating copper tubes in conjunction with external electromagnetic induction heating related equipment, the pipes to be welded can be preheated and post-heat treated, the cooling rate after welding can be reduced, the hardening tendency can be reduced, the generation of cracks can be prevented, the temperature difference in the heat-affected zone can be reduced, and it is beneficial to reduce welding stress.

[0008] Preferably, the welding jig includes a mounting seat, a rotating cylinder, a clamping block and a side seal. The mounting seat is fixed on the upper surface of the machine, a through hole is opened inside the rotating cylinder, the clamping block is passed through the through hole, the rotating cylinder is rotatably mounted inside the mounting seat, and the side seal is fixed on one side of the rotating cylinder. Specifically, the welding jig can be used to clamp the pipe to be welded and cooperate with the driving mechanism to drive the pipe to rotate slowly.

[0009] Preferably, the driving mechanism includes a motor, a transmission shaft and a driving wheel. The motor is fixed to the outer wall of the machine, the transmission shaft is passed through the inside of the machine and is connected to the motor drive, and the driving wheel is sleeved on the transmission shaft. Specifically, the driving mechanism can drive the welding jig to rotate, thereby driving the pipe to be welded to rotate.

[0010] Preferably, a driven wheel is fixedly provided on one side of the rotating drum, and the driving mechanism further includes a synchronous belt, and the driven wheel and the driving wheel are connected through the synchronous belt transmission.

[0011] Preferably, the inner wall of the clamping block is in the shape of a congruent circular arc, and the thickness of the outer wall of the clamping block gradually decreases from one end to the other end. Specifically, by setting the clamping block to clamp the outer wall of the pipe to be welded, and then embedding it into the through hole of the rotating cylinder, it is possible to clamp pipes of different outer diameters.

[0012] Compared with the prior art, this utility model provides a new pulse welding device with the following features:

[0013] Beneficial effects:

[0014] It uses a preheating mechanism to preheat and post-heat the pipe to be welded, which can effectively reduce the cooling rate after welding, reduce the tendency to harden, and prevent cracks. At the same time, the pitch of the two sets of heating copper tubes used for preheating and post-heating gradually increases from adjacent positions to the outside. Therefore, the temperature of the pipe to be welded will gradually decrease from the welding position to both ends. The temperature transition is smooth, which can avoid the formation of a cliff-like temperature difference, reduce the temperature difference in the heat-affected zone, and help reduce welding stress. For steel with a greater tendency to harden, preheating can improve the crack resistance of the welded joint, help ensure the performance of the welded joint and extend the service life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0016] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0017] Figure 2 This is a side view of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the welding jig of the utility model;

[0019] Figure 4 This is an exploded view of the welding fixture of the utility model;

[0020] Figure 5 This is a schematic diagram of the preheating mechanism structure of the utility model.

[0021] In the figure: 10, machine; 20, welding jig; 201, mounting base; 202, rotating cylinder; 203, clamping block; 204, side seal; 205, through hole; 206, driven wheel; 30, driving mechanism; 301, motor; 302, transmission shaft; 303, driving wheel; 304, synchronous belt; 40, preheating mechanism; 401, slide rail; 402, slider; 403, micro electric cylinder; 404, mounting plate; 405, interface; 406, heating copper tube; 50, pulse welding host. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] Example:

[0025] See also Figure 1-Figure 5 The present invention provides a technical solution: a novel pulse welding device, comprising a machine platform 10 and a pulse welding host 50. The pulse welding host 50 is fixedly mounted in the middle of the top of the machine platform 10. Two sets of welding jigs 20 for clamping the pipe to be welded are fixedly mounted on the top edge of the machine platform 10. A driving mechanism 30 for driving the welding jigs 20 to rotate is installed inside the machine platform 10. A preheating mechanism 40 for preheating the pipe to be welded is installed in the middle of the top of the machine platform 10.

[0026] The preheating mechanism 40 includes a slide rail 401, a slider 402, a micro electric cylinder 403, a mounting plate 404, an interface 405 and a heating copper tube 406. The slide rail 401 is horizontally fixed on the upper surface of the machine 10, and two sliders 402 are slidably installed on the slide rail 401. The micro electric cylinder 403 is horizontally installed at the end of the slide rail 401, and the slider 402 is driven and connected to the micro electric cylinder 403. The mounting plate 404 is fixed on the upper surface of the slider 402. Two interfaces 405 are inserted at the diagonal positions of the mounting plate 404. The two ends of the heating copper tube 406 are respectively connected to and fixed with the interfaces 405.

[0027] Preferably, the two groups of heating copper tubes 406 are spiral-shaped, and the pitch of the two groups of heating copper tubes 406 gradually increases from adjacent positions toward the outside. Specifically, by setting the heating copper tubes 406 in conjunction with external electromagnetic induction heating related equipment, the pipes to be welded can be preheated and post-heat treated, the cooling rate after welding can be reduced, the hardening tendency can be reduced, the generation of cracks can be prevented, the temperature difference in the heat-affected zone can be reduced, and it is beneficial to reduce welding stress.

[0028] Preferably, the welding jig 20 includes a mounting seat 201, a rotating cylinder 202, a clamping block 203 and a side seal 204. The mounting seat 201 is fixed on the upper surface of the machine 10, a through hole 205 is opened inside the rotating cylinder 202, the clamping block 203 is passed through the through hole 205, the rotating cylinder 202 is rotatably mounted inside the mounting seat 201, and the side seal 204 is fixed on one side of the rotating cylinder 202. Specifically, the welding jig 20 can be used to clamp the pipe to be welded and cooperate with the driving mechanism 30 to drive the pipe to rotate slowly.

[0029] Preferably, the driving mechanism 30 includes a motor 301, a transmission shaft 302 and a driving wheel 303. The motor 301 is fixed to the outer wall of the machine 10, the transmission shaft 302 is passed through the inside of the machine 10 and is driven and connected to the motor 301, and the driving wheel 303 is sleeved on the transmission shaft 302. Specifically, the driving mechanism 30 can drive the welding jig 20 to rotate, thereby driving the pipe to be welded to rotate.

[0030] Preferably, a driven wheel 206 is fixedly provided on one side of the rotating drum 202 , and the driving mechanism 30 further includes a synchronous belt 304 , through which the driven wheel 206 and the driving wheel 303 are connected.

[0031] Preferably, the inner wall of the clamping block 203 is in the shape of a congruent circular arc, and the thickness of the outer wall of the clamping block 203 gradually decreases from one end to the other end. Specifically, by setting the clamping block 203 to clamp the outer wall of the pipe to be welded, and then embedding it into the through hole 205 of the rotating cylinder 202, it is possible to clamp pipes of different outer diameters.

[0032] Working principle: The clamping block 203 is set on the outer wall of the two pipes to be welded, and then inserted into the rotating cylinder 202 and fixed with the side seal 204, so that the welding position of the two pipes to be welded is close to or close to each other, and then the driving mechanism 30 is started to drive the rotating cylinder 202 to rotate slowly. At the same time, the electromagnetic induction heating device connected to the heating copper tube 406 is started, and the heating copper tube 406 is used to preheat the pipes to be welded. Then, the pulse welding host 50 is used to weld the pipes to be welded, and finally the heating copper tube 406 is used for post-heat treatment. It should be noted here that the driving mechanism 3 When the machine is started, the motor 301 cooperates with the transmission shaft 302 to drive the driving wheel 303 to rotate, and then the driving wheel 303 cooperates with the synchronous belt 304 to drive the driven wheel 206 and the rotating cylinder 202 to rotate slowly. During the preheating and post-heating process, the micro electric cylinder 403 drives the slider 402 to slide along the slide rail 401, thereby driving the heating copper tube 406 to move horizontally to perform preheating and post-heating treatment on different positions of the pipe. The pitch of the two sets of heating copper tubes 406 gradually increases from adjacent positions to both ends. Therefore, the temperature of the pipe to be welded gradually decreases from the butt welding position to the edge, and the temperature transition is smooth, which can avoid the formation of a cliff-like temperature difference.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A new type of pulse welding device, characterized by: The invention comprises a machine (10) and a pulse welding main machine (50), wherein the pulse welding main machine (50) is fixedly arranged at the top middle position of the machine (10), two sets of welding jigs (20) for clamping the pipe to be welded are fixedly arranged at the top edge of the machine (10), a driving mechanism (30) for driving the welding jigs (20) to rotate is installed inside the machine (10), and a preheating mechanism (40) for preheating the pipe to be welded is installed at the top middle position of the machine (10); The preheating mechanism (40) comprises a slide rail (401), a slider (402), a micro electric cylinder (403), a mounting plate (404), an interface (405) and a heating copper tube (406); the slide rail (401) is fixedly mounted horizontally on the upper surface of the machine (10); two sliders (402) are slidably mounted on the slide rail (401); the micro electric cylinder (403) is mounted horizontally at the end of the slide rail (401); the slider (402) and the micro electric cylinder (403) are drivingly connected; the mounting plate (404) is fixedly mounted on the upper surface of the slider (402); the two interfaces (405) are penetrated at diagonal positions of the mounting plate (404); and the two ends of the heating copper tube (406) are respectively connected to and fixed with the interfaces (405).

2. A novel pulse welding device according to claim 1, characterized in that: The two groups of heating copper tubes (406) are both spiral-shaped, and the pitches of the two groups of heating copper tubes (406) gradually increase from adjacent positions toward the outside.

3. A novel pulse welding device according to claim 1, characterized in that: The welding jig (20) comprises a mounting seat (201), a rotating cylinder (202), a clamping block (203) and a side seal (204); the mounting seat (201) is fixed on the upper surface of the machine (10); a through hole (205) is provided inside the rotating cylinder (202); the clamping block (203) is passed through the through hole (205); the rotating cylinder (202) is rotatably mounted inside the mounting seat (201); and the side seal (204) is fixed on one side of the rotating cylinder (202).

4. A novel pulse welding device according to claim 1, characterized in that: The driving mechanism (30) comprises a motor (301), a transmission shaft (302) and a driving wheel (303); the motor (301) is fixed to the outer wall of the machine (10); the transmission shaft (302) is passed through the interior of the machine (10) and is drivingly connected to the motor (301); and the driving wheel (303) is sleeved on the transmission shaft (302).

5. A novel pulse welding device according to claim 3, characterized in that: A driven wheel (206) is fixedly provided on one side of the rotating cylinder (202), and the driving mechanism (30) further comprises a synchronous belt (304), and the driven wheel (206) and the driving wheel (303) are connected in transmission via the synchronous belt (304).

6. A novel pulse welding device according to claim 3, characterized in that: The inner wall of the clamping block (203) is in the shape of a congruent circular arc, and the thickness of the outer wall of the clamping block (203) gradually decreases from one end toward the other end.

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