A cooling device for electric welders

Abstract

This utility model discloses a cooling device for an electric welding machine, relating to the technical field of cooling devices. It includes a metal housing, with a mounting housing fixed to one side of the metal housing. A cooling motor is installed on the inner wall of one side of the mounting housing. By incorporating a protective mechanism, it prevents the welding machine's cooling fan blades from deforming and being damaged due to forced continuous rotation, while also preventing damage to the cooling motor. This improves the safety performance and service life of the device and helps maintain good cooling effect for the welding machine. Furthermore, by incorporating a positioning mechanism, it facilitates the positioning and fixing of the protective cover and the metal housing during installation, simplifying assembly. This not only improves assembly efficiency and reduces operational difficulty but also ensures the stability of the connection, effectively preventing loosening caused by equipment vibration and providing convenience for subsequent regular maintenance.

Description

Technical Field

[0001] This utility model relates to the field of cooling device technology, specifically a cooling device for an electric welding machine. Background Technology

[0002] An electric welding machine is a specialized piece of equipment that uses electrical energy to generate a high-temperature electric arc to melt metal and achieve a connection. During operation, the welding machine requires heat dissipation. The cooling device used in welding machines is a system that cools the machine by forcing airflow. Its core mechanism involves using a fan to draw in cool external air, which then blows over heat-generating components such as the main transformer and power electronic devices, carrying away the heat and expelling it as hot air. This maintains the equipment within a suitable operating temperature range. This device has a relatively simple structure, is easy to maintain, and effectively improves the stability of continuous operation and extends the service life of the welding machine.

[0003] However, in existing cooling devices, if the fan blades become accidentally jammed during use, it may cause deformation of the fan blade hub and other structures, and may also damage the motor that cools the fan blades. Therefore, those skilled in the art have provided a cooling device for welding machines to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device for an electric welding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A cooling device for an electric welding machine includes a metal housing, a mounting housing fixed to one side of the metal housing, a cooling motor mounted on the inner wall of one side of the mounting housing, a protective mechanism fixed to one end of the output shaft of the cooling motor, a cooling fan blade for the electric welding machine mounted on the outside of the protective mechanism, a positioning mechanism provided on the outside of the metal housing, and a protective cover mounted on the metal housing through the positioning mechanism. The protection mechanism includes a connecting block, several arc-shaped locking blocks are fixed to the outside of the connecting block, an mounting block is connected to the outside of the connecting block, a drive shaft is fixed to the outside of the cooling fan blades of the welding machine, a fixing pad is fixed to the outside of the drive shaft, multiple return springs are provided on the outside of the fixing pad, and an anti-slip plate is connected to the end of the return spring away from the fixing pad.

[0006] As an improvement of this utility model: the outer wall of the mounting block is provided with multiple arc-shaped grooves, and the size of the arc-shaped grooves is adapted to the size of the arc-shaped card block.

[0007] As an improvement of this utility model: the connecting block and the output shaft of the cooling motor are fixed, and one side of the welding machine cooling fan blade is connected to the protective cover through a bearing.

[0008] As an improvement of this utility model: multiple limiting rods are fixed on the side of the fixing pad near the reset spring, and the corresponding surface of the anti-slip plate is in contact with the mounting block.

[0009] As an improvement of this utility model: the positioning mechanism includes a connecting sleeve, the connecting sleeve has a connecting groove inside, a threaded post that penetrates the other side of the metal shell is movably inserted into one side of the metal shell, a washer is movably sleeved on the outside of the threaded post, and a metal nut is threadedly connected to the outside of the threaded post.

[0010] As an improvement of this utility model: the size of the connecting groove is adapted to the size of the protective cover, and the corresponding surface of the gasket is fitted with the protective cover.

[0011] As an improvement of this utility model: the connecting sleeve is welded and fixed to the metal shell, and the outer side of the metal nut is provided with anti-slip texture.

[0012] As an improvement of this utility model: a threaded hole is provided on the outer side of the metal shell, and the mounting shell is fixed to the metal shell by bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By incorporating a protective mechanism, the device prevents the welding machine's cooling fan blades from deforming and being damaged due to forced continuous rotation. It also prevents damage to the cooling motor. If a foreign object is suddenly inserted, the force that stops the welding machine's cooling fan blades is greater than the frictional force between the anti-slip plate and the mounting block. This disconnects the transmission between the cooling motor and the welding machine's cooling fan blades, preventing continuous damage. This enhances the safety performance and service life of the device and helps maintain a good cooling effect for the welding machine.

[0014] 2. By setting up a positioning mechanism, the protective cover can be guided to the installation position, achieving rapid initial positioning and eliminating the problem of repeated alignment. This facilitates the positioning and fixing of the protective cover and the metal shell during installation, simplifying assembly. It not only improves assembly efficiency and reduces operational difficulty, but also ensures the stability of the connection, effectively preventing loosening caused by equipment vibration, and provides convenience for subsequent regular maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the cooling motor in this utility model; Figure 3 This is a schematic diagram of the protective mechanism in this utility model; Figure 4 for Figure 3 Enlarged schematic diagram of region A; Figure 5 This is a schematic diagram of the positioning mechanism in this utility model.

[0016] In the diagram: 1. Metal casing; 2. Mounting casing; 3. Welding machine cooling fan blades; 4. Protective mechanism; 41. Connecting block; 42. Arc-shaped locking block; 43. Mounting block; 44. Drive shaft; 45. Fixing pad; 46. Return spring; 47. Anti-slip plate; 5. Cooling motor; 6. Protective cover; 7. Positioning mechanism; 71. Connecting sleeve; 72. Connecting groove; 73. Threaded column; 74. Washer; 75. Metal nut. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below with reference to specific embodiments: First Embodiment Please see Figures 1-5 A cooling device for an electric welding machine includes a metal housing 1, a mounting housing 2 fixed to one side of the metal housing 1, a cooling motor 5 mounted on the inner wall of one side of the mounting housing 2, a protective mechanism 4 fixed to one end of the output shaft of the cooling motor 5, a cooling fan blade 3 for the electric welding machine mounted on the outside of the protective mechanism 4, a positioning mechanism 7 provided on the outside of the metal housing 1, a protective cover 6 mounted on the metal housing 1 through the positioning mechanism 7, a threaded hole opened on the outside of the metal housing 1, and the mounting housing 2 and the metal housing 1 are fixed together by bolts. The protection mechanism 4 includes a connecting block 41, several arc-shaped locking blocks 42 are fixed on the outside of the connecting block 41, and an mounting block 43 is connected to the outside of the connecting block 41. A drive shaft 44 is fixed on the outside of the welding machine cooling fan blade 3, a fixing pad 45 is fixed on the outside of the drive shaft 44, and multiple return springs 46 are provided on the outside of the fixing pad 45. An anti-slip plate 47 is connected to the end of the return spring 46 away from the fixing pad 45. Multiple arc-shaped grooves are opened on the outer wall of the mounting block 43, and the size of the arc-shaped grooves is adapted to the size of the arc-shaped locking blocks 42. The connecting block 41 is fixed to the output shaft of the cooling motor 5. One side of the welding machine cooling fan blade 3 is connected to the protective cover 6 through a bearing. Multiple limit rods are fixed on the side of the fixing pad 45 near the return spring 46. The corresponding surface of the anti-slip plate 47 is in contact with the mounting block 43.

[0018] With the above settings, when cooling the welding machine, the cooling motor 5 is started, causing the output shaft of the cooling motor 5 to drive the connecting block 41 and the anti-slip plate 47 to rotate synchronously. This, in turn, drives the welding machine cooling fan blades 3 to rotate via the transmission shaft 44, drawing in external cold air into the welding machine. The air then blows over the heat-generating components such as the main transformer and power electronic devices, carrying away the heat and expelling it as hot air, thus cooling the welding machine. If a foreign object gets stuck in the welding machine cooling fan blades 3, the corresponding arc-shaped locking block 42 can disengage from the groove of the mounting block 43, thereby disconnecting the connection and preventing the welding machine cooling fan blades 3 from deforming and being damaged due to forced continuous rotation. This also prevents damage to the cooling motor 5. If a foreign object is suddenly inserted and causes the welding machine cooling fan blades 3 to stop, the resistance force is greater than the friction force between the anti-slip plate 47 and the corresponding surface of the mounting block 43. This also disconnects the transmission between the cooling motor 5 and the welding machine cooling fan blades 3, preventing continuous damage. This improves the safety performance and service life of the device and helps maintain a good welding machine cooling effect.

[0019] In summary, when the cooling motor 5 starts, it drives the connecting block 41, which is fixed to its output shaft, to rotate. Several arc-shaped locking blocks 42 on the outer side of the connecting block 41 are embedded into the corresponding arc-shaped grooves on the outer wall of the mounting block 43. At the same time, under the preload of the return spring 46, the contact surface between the anti-slip plate 47 and the mounting block 43 generates sufficient friction. The torque is transmitted through the mechanical engagement of this friction surface and the arc-shaped locking blocks 42, ultimately driving the transmission shaft 44 and the welding machine cooling fan blades 3 to rotate normally for forced air cooling. Under overload protection, if a foreign object gets stuck in the fan blades, the resistance torque will be reduced. The resistance increases sharply, and when this resistance torque exceeds the maximum static friction between the anti-slip plate 47 and the mounting block 43, the mechanism slips. If the resistance increases further, the arc-shaped locking block 42 will completely disengage from the groove, physically disconnecting the power transmission. The limiting rod on the fixing pad 45 ensures that the return spring 46 and the anti-slip plate 47 move along the designed path during operation, maintaining the stability of the mechanism. This graded protection mechanism effectively avoids the risk of motor burnout or fan blade damage due to foreign object jamming in harsh industrial environments, significantly improving the reliability and service life of the device.

[0020] Second Embodiment Please see Figures 1-5Based on the first embodiment, the positioning mechanism 7 includes a connecting sleeve 71, with a connecting groove 72 inside the connecting sleeve 71. A threaded post 73 is movably inserted into one side of the metal housing 1 and extends through the other side. A washer 74 is movably sleeved on the outside of the threaded post 73. A metal nut 75 is threadedly connected to the outside of the threaded post 73. The size of the connecting groove 72 is adapted to the size of the protective cover 6. The corresponding surface of the washer 74 fits against the protective cover 6. The connecting sleeve 71 is welded and fixed to the metal housing 1. The outside of the metal nut 75 is provided with anti-slip texture. A threaded hole is opened on the outside of the metal housing 1. The mounting housing 2 is fixed to the metal housing 1 by bolts.

[0021] With the above settings, when the protective cover 6 is installed on the outside of the metal housing 1, it is necessary to align the protective cover 6 with the threaded hole of the metal housing 1. Simply place the protective cover 6 into the pre-set connecting groove 72 of the connecting sleeve 71 to quickly complete the positioning of the protective cover 6 during installation. Then, the threaded post 73 can be used to penetrate the metal housing 1 and the protective cover 6, and the washer 74 can be movably sleeved on the outside of the threaded post 73. Finally, the metal nut 75 is threadedly connected to the threaded post 73, which conveniently completes the positioning and fixing operation of the protective cover 6 and the metal housing 1 during installation, achieving the purpose of simple assembly and also facilitating the later disassembly and maintenance.

[0022] In summary, the protective cover 6 is first placed directly into the connecting sleeve 71, which is welded and fixed to the metal housing 1. The size of the connecting groove 72 is precisely matched with that of the protective cover 6, guiding the protective cover 6 to the installation position accurately and achieving rapid initial positioning, eliminating the need for repeated alignment. Then, the threaded post 73 is passed through the pre-set threaded hole on the metal housing 1 and the already positioned protective cover 6. Next, the washer 74 is put on, and the metal nut 75 with anti-slip texture is tightened. The washer 74 can evenly distribute the locking force and prevent the surface of the protective cover 6 from being damaged. As the metal nut 75 is tightened, a strong preload is generated through the threaded connection, which finally presses the protective cover 6 firmly onto the metal housing 1. This not only improves assembly efficiency and reduces operation difficulty, but also ensures the stability of the connection and effectively prevents loosening caused by equipment vibration. At the same time, this structure also provides convenience for subsequent regular maintenance.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Cooling device for electric welders, comprising a metal casing (1), characterized in that, A mounting housing (2) is fixed to one side of the metal housing (1). A cooling motor (5) is installed on the inner wall of one side of the mounting housing (2). A protective mechanism (4) is fixed to one end of the output shaft of the cooling motor (5). A welding machine cooling fan blade (3) is installed on the outside of the protective mechanism (4). A positioning mechanism (7) is provided on the outside of the metal housing (1). A protective cover (6) is installed on the metal housing (1) through the positioning mechanism (7). The protection mechanism (4) includes a connecting block (41), a number of arc-shaped locking blocks (42) are fixed on the outside of the connecting block (41), an mounting block (43) is connected to the outside of the connecting block (41), a drive shaft (44) is fixed on the outside of the welding machine cooling fan blade (3), a fixing pad (45) is fixed on the outside of the drive shaft (44), a number of return springs (46) are provided on the outside of the fixing pad (45), and an anti-slip plate (47) is connected to the end of the return spring (46) away from the fixing pad (45).

2. A cooling device for a welding machine according to claim 1, characterized in that The outer wall of the mounting block (43) is provided with multiple arc-shaped grooves, and the size of the arc-shaped grooves is adapted to the size of the arc-shaped card block (42).

3. A cooling device for electric welders according to claim 1, characterized in that, The connecting block (41) and the output shaft of the cooling motor (5) are fixed, and one side of the welding machine cooling fan blade (3) is connected to the protective cover (6) by a bearing.

4. A cooling device for electric welders according to claim 1, characterized in that, The fixing pad (45) is fixed with multiple limiting rods on the side near the reset spring (46), and the corresponding surface of the anti-slip plate (47) is in contact with the mounting block (43).

5. A cooling device for electric welders according to claim 1, characterized in that, The positioning mechanism (7) includes a connecting sleeve (71), the connecting sleeve (71) has a connecting groove (72) inside, a threaded post (73) is movably inserted into one side of the metal housing (1) and passes through the other side, a gasket (74) is movably sleeved on the outside of the threaded post (73), and a metal nut (75) is threadedly connected to the outside of the threaded post (73).

6. A cooling device for a welding machine according to claim 5, characterized in that The dimensions of the connecting groove (72) are adapted to the dimensions of the protective cover (6), and the corresponding surface of the gasket (74) is in contact with the protective cover (6).

7. A cooling device for a welding machine according to claim 6, characterized in that The connecting sleeve (71) is welded and fixed to the metal shell (1), and the outer side of the metal nut (75) is provided with anti-slip texture.

8. A cooling device for electric welders according to claim 1, characterized in that, The metal housing (1) has a threaded hole on its outer side, and the mounting housing (2) is fixed to the metal housing (1) by bolts.

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