Welding head

By using the principle of electromagnet in the welding head, the direct fixation of thin plate members at the welding is achieved, and the fixing difficulties caused by the translocation of thin plate members in the prior art is solved, and the efficiency and accuracy of welding operations are improved.

CN222679949UActive Publication Date: 2025-03-28WENZHOU TENGFENG AUTOMATION TECH CO LTD
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Patent Information

Application Number
CN202421401941.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-18
Publication Date
2025-03-28
Estimated Expiration
2034-06-18

AI Technical Summary

Technical Problem

During the spot welding process, since the thin plate members are prone to displacement, it is difficult for the prior art to directly fix the position of the thin plate members at the welding, resulting in a waste of time for coordination and coordination of the fixing device and low operating efficiency.

Method used

A welding head is designed, adopting the principle of an electromagnet, and the current is distributed to the electromagnet and the second control component through the first control component. The electromagnet attracts the permanent magnet to drive the moving parts to move, so that the resisting parts abut the thin plate members, and realizes the position of the thin plate members directly fixed at the welding.

Benefits of technology

The direct fixation of thin plate members at the welding is achieved, deformation caused by excessive pressure is avoided, and the force application can be adjusted in time to adapt to thin plate members of different hardnesses, which improves the efficiency and accuracy of welding operations.

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Abstract

According to the technical scheme, the welding head is characterized in that the welding head comprises a machine frame, a first control assembly is fixedly connected into the machine frame, the machine frame is further fixedly connected with a cross beam, a welding assembly and a fixing assembly are installed on the cross beam, and the welding assembly comprises a first welding head used for welding operation and electrically connected with a second control assembly; the fixing assembly comprises a supporting piece fixedly connected with the cross beam, the supporting piece is slidably connected with a moving piece arranged below the first welding head, the end, facing the first welding head, of the moving piece is fixedly connected with an abutting piece used for abutting against the thin plate component, and the end, away from the first welding head, of the moving piece is fixedly connected with a permanent magnet. According to the thin plate component welding device, the principle of the electromagnet is used for design, the electromagnet can change the magnetic force according to the actual input current magnitude, and then the purpose of directly fixing the position of a thin plate component at the welding position is achieved through mutual attraction between the electromagnet and the permanent magnet.
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Description

Technical Field

[0001] The utility model relates to a mechanical device, more specifically, it relates to a welding machine head. Background Art

[0002] Welding, also known as fusion welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. Welding includes fusion welding, pressure welding and brazing. Among them, spot welding is suitable for thin plate components. Spot welding refers to a welding method that uses a columnar electrode to form a weld between the contact surfaces of two overlapping workpieces. During spot welding, pressure is first applied to make the workpieces in close contact, and then the current is turned on. The contact between the workpieces melts under the action of resistance heat, and a weld is formed after cooling. Spot welding is mainly used for welding thin plate components with a thickness of less than 4 mm. In the prior art, since the thin plate components themselves are thin and easy to move, it is necessary to manually support the thin plate components or use multiple fixing devices during welding operations. However, it is found in actual production that the fixing device is far away from the welding head and cannot directly fix the thin plate components at the welding location, resulting in a waste of time in coordination between multiple devices and low operating efficiency. Therefore, a welding machine head with a fixing device is required, which can directly fix the position of the thin plate component at the welding location.

[0003] In view of the above reasons, how to directly fix the position of the thin plate component at the welding point is exactly the problem considered in this application. Utility Model Content

[0004] Aiming at the deficiencies in the prior art, a welding head is provided, which can directly fix the position of a thin plate component at a welding location.

[0005] To achieve the above-mentioned purpose, the following technical scheme is provided: a welding head, comprising a frame, a first control component for controlling a circuit is fixedly connected in the frame, the first control component is electrically connected to a first rectifier arranged inside the frame, the frame is also fixedly connected to a crossbeam, a welding component and a fixed component arranged below the welding component are mounted on the crossbeam, the welding component comprises a second control component and a first welding head used for welding operation and electrically connected to the second control component, the fixed component comprises a support member fixedly connected to the crossbeam, the support member is slidably connected to a moving member arranged below the first weld penetration, an abutment member for abutting a thin plate member is fixedly connected to one end of the moving member facing the first welding head, a permanent magnet is fixedly connected to one end of the moving member away from the first welding head, an electromagnet arranged inside the support member is also fixedly connected to one end of the support member facing the moving member, and a shunt electrically connected to both the electromagnet and the second control group component is also fixedly connected to one end of the support member away from the moving member.

[0006] In summary, the above technical solution has the following beneficial effects: when the welding operation starts, the first control component will connect the circuit where the first rectifier is located to the power supply, so that the shunt can distribute the current to the electromagnet and the second control component, and the second control component can control whether the first welding head is in operation, and the electromagnet will generate magnetism after being energized, so that it can attract the permanent magnet to move toward the electromagnet, so that it can drive the moving part to move, and then the abutment can abut against the thin plate component, and the magnetic force of the electromagnet can be controlled according to the amount of current distributed by the first controller and the shunt, and because the magnetic adsorption is not a mechanical structure, it has a certain fault tolerance, which can avoid deformation of the thin plate component due to excessive pressure, and when it is necessary to weld thin plate components of different hardness, the amount of current distributed can be changed by the first control component to timely adjust the actual force of the fixed component;

[0007] The utility model is designed using the principle of electromagnet. The electromagnet can change the size of the magnetic force according to the actual input current, and then achieve the purpose of changing the size of the force applied to the thin plate component through mutual attraction with the permanent magnet. The common fixing method uses a mechanical telescopic rod to apply force, and there is a certain time difference between the extension and shortening of the push rod, so the actual force cannot be adjusted in time, thereby causing the thin plate component to deform. However, the utility model is different. When the first control component changes the actual input current in the first rectifier, the pressure on the thin plate component due to the abutment of the contact piece changes accordingly. This can prevent the thin plate component from being damaged due to excessive pressure and failure to adjust it in time. The force applied to the thin plate component with high hardness can also be adjusted in time, and the purpose of directly fixing the position of the thin plate component at the welding point can also be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the three-dimensional structure of a welding machine head;

[0009] Figure 2 It is a cross-sectional view of the utility model;

[0010] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0011] Reference numerals: 1, frame; 2, first control assembly; 3, crossbeam; 4, welding assembly; 5, fixing assembly; 11, first rectifier; 12, second rectifier; 13, second welding head; 14, support plate; 15, third rectifier; 16, fourth motor; 17, third transmission gear;

[0012] 31. first rack; 32. track;

[0013] 41. second control assembly; 42. first welding head; 43. first housing; 44. second housing; 45. third housing;

[0014] 431, first motor; 432, first transmission gear; 433, slider; 434, limit bar; 435, second rack;

[0015] 441, a receiving slot; 442, a second motor; 443, a second transmission gear;

[0016] 451, a third motor; 452, a threaded sleeve; 453, a threaded rod; 454, a connecting piece;

[0017] 51. Support member; 52. Moving member; 53. Resistance member; 54. Permanent magnet; 55. Electromagnet; 56. Diverter; DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] Reference Figure 1-3 As shown, a welding head includes a frame 1, a first control component 2 for controlling a circuit is fixedly connected in the frame 1, the first control component 2 is electrically connected to a first rectifier 11 arranged inside the frame 1, the frame 1 is also fixedly connected to a crossbeam 3, a welding component 4 and a fixing component 5 arranged below the welding component 4 are installed on the crossbeam 3, the welding component 4 includes a second control component 41 and a first welding head 42 for welding operation and electrically connected to the second control component 41, the fixing component 5 includes a support fixedly connected to the crossbeam 3 A support member 51, the support member 51 is slidably connected to a moving member 52 disposed below the first penetration, the moving member 52 is fixedly connected to an abutting member 53 for abutting against the thin plate member at one end facing the first welding head 42, the moving member 52 is fixedly connected to an end away from the first welding head 42 with a permanent magnet 54, the support member 51 is also fixedly connected to an electromagnet 55 disposed inside the support member 51 at one end facing the moving member 52, and the support member 51 is also fixedly connected to an end away from the moving member 52 with a shunt 56 electrically connected to both the electromagnet 55 and the second control group components;

[0020] When the welding operation starts, the first control component 2 will connect the circuit where the first rectifier 11 is located to the power supply, so that the shunt 56 can distribute the current to the electromagnet 55 and the second control component 41. The second control component 41 can control whether the first welding head 42 is in operation, and the electromagnet 55 will generate magnetism after being energized, so that it can attract the permanent magnet 54 to move toward the electromagnet 55, so that the moving part 52 can be driven to move, and then the abutment 53 can be abutted against the thin plate member. The magnetic force of the electromagnet 55 can be controlled according to the amount of current distributed by the first controller and the shunt 56, and because the magnetic adsorption is not a mechanical structure, it has a certain fault tolerance, which can avoid deformation of the thin plate member due to excessive pressure. At the same time, when it is necessary to weld thin plate members of different hardness, the amount of current distributed can be changed by the first control component 2 to timely adjust the actual force applied by the fixing component 5;

[0021] The utility model is designed based on the principle of the electromagnet 55. The electromagnet 55 can change the magnitude of the magnetic force according to the actual input current, and then achieve the purpose of changing the magnitude of the force applied to the thin plate member through mutual attraction with the permanent magnet 54. The common fixing method uses a mechanical telescopic rod to apply force, and there is a certain time difference between the extension and shortening of the push rod, so the actual force cannot be adjusted in time, thereby causing the thin plate member to deform. However, the utility model is different. When the first control component 2 changes the actual input current in the first rectifier 11, the pressure on the thin plate member due to the abutment against the abutment 53 changes accordingly. This can prevent the thin plate member from being damaged due to excessive pressure and failure to adjust it in time. The force applied to the thin plate member with high hardness can also be adjusted in time, and the purpose of directly fixing the position of the thin plate member at the welding point can also be achieved.

[0022] Further, the welding assembly 4 also includes a first housing 43 fixedly connected to the second control assembly 41, the first housing 43 is fixedly connected to a first motor 431 fixedly connected to the second control assembly 41, the bottom of the crossbeam 3 is fixedly connected to a first rack 31 and a track 32 fixedly connected to the first rack 31, the first motor 431 is connected to a first transmission gear 432 meshingly connected to the first rack 31, and the first housing 43 is fixedly connected to a slider 433 slidably connected to the track 32;

[0023] The first shell 43 is also slidably connected to the end away from the support member 51 with the second shell 44, and the first shell 43 is fixedly connected to the end of the second shell 44 facing the second shell 44 with a horizontally arranged limit bar 434 and the extension direction of which is perpendicular to the extension direction of the first rack 31, and the limit bar 434 is fixedly connected to the end away from the first shell 43 with the second rack 435, and the second shell 44 is provided with a receiving groove 441 which is slidably connected to the limit bar 434 and is used to accommodate the limit bar 434 and the second rack 435, and the second shell 44 is also fixedly connected to the second motor 442 which is electrically connected to the second control component 41, and the second motor 442 is connected to the second transmission gear 443 which is meshed with the second rack 435;

[0024] The second housing 44 is fixedly connected to a third housing 45 at one end away from the first housing 43, the third housing 45 is fixedly connected to a third motor 451 electrically connected to the second control assembly 41, the third motor 451 is connected to a threaded sleeve 452, the threaded sleeve 452 is meshedly connected to a threaded rod 453, the threaded rod 453 is fixedly connected to a connector 454 for mounting the first welding head 42 and slidably connected to the third housing 45;

[0025] Since a small displacement will occur during the process of fixing the thin plate component, it is necessary to set the welding assembly 4 to be able to move a small amount so as to enable accurate spot welding. Figure 2 As shown, the first transmission gear 432 cooperates with the first rack 31 to enable the first shell 43 to move left and right, the second transmission gear 443 cooperates with the second rack 435 to enable the second shell 44 to move forward and backward relative to the first shell 43, and the threaded sleeve 452 cooperates with the threaded rod 453 to enable the connecting piece 454 to move up and down. Through these three cooperations, the first welding head 42 can be moved in three-axis directions, so that the position of the spot welding can be accurately adjusted.

[0026] Furthermore, the frame 1 is also fixedly connected to a second rectifier 12 electrically connected to the first control assembly 2, and the second rectifier 12 is electrically connected to a second welding head 13 detachably connected to the housing and arranged at the same level as the first welding head 42;

[0027] Since spot welding can be performed on one side or both sides, a detachable second welding head 13 is provided. When single-sided spot welding is required, the second welding head 13 only needs to be replaced with a workpiece for supporting the thin plate component. When double-sided spot welding is required, the second welding head 13 arranged at the same level as the first welding head 42 can be used to achieve double-sided spot welding of the welding part.

[0028] Furthermore, the frame 1 is also fixedly connected with a support plate 14 whose contact area with the thin plate member is larger than the contact area between the abutment member 53 and the thin plate member.

[0029] Furthermore, the frame 1 is also fixedly connected to a third rectifier 15 electrically connected to the first control assembly 2, the crossbeam 3 is also fixedly connected to a fourth motor 16 electrically connected to the third rectifier 15, and the fourth motor 16 is connected to a third transmission gear 17;

[0030] The welding head is usually installed on a large welding machine. In order to facilitate the spot welding assembly line operation, it needs to be able to move significantly. Therefore, a fourth motor 16 is provided to achieve movement of the entire welding head by meshing the third transmission tooth with other transmission gears or racks and other components.

[0031] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A welding head, characterized in that: The invention comprises a frame (1), wherein a first control component (2) for controlling a circuit is fixedly connected inside the frame (1), wherein the first control component (2) is electrically connected to a first rectifier (11) arranged inside the frame (1), wherein the frame (1) is also fixedly connected to a crossbeam (3), wherein a welding component (4) and a fixing component (5) arranged below the welding component (4) are mounted on the crossbeam (3), wherein the welding component (4) comprises a second control component (41) and a first welding head (42) used for welding and electrically connected to the second control component (41), wherein the fixing component (5) comprises a support fixedly connected to the crossbeam (3) A support member (51) is slidably connected to a moving member (52) disposed below the first weld penetration, an end of the moving member (52) facing the first welding head (42) is fixedly connected to a resisting member (53) for resisting against a thin plate member, an end of the moving member away from the first welding head (42) is fixedly connected to a permanent magnet (54), an end of the support member (51) facing the moving member (52) is also fixedly connected to an electromagnet (55) disposed inside the support member (51), and an end of the support member (51) away from the moving member (52) is also fixedly connected to a shunt (56) electrically connected to both the electromagnet (55) and the second control group component.

2. A welding head according to claim 1, characterized in that: The welding assembly (4) further comprises a first housing (43) fixedly connected to the second control assembly (41); the first housing (43) is fixedly connected to a first motor (431) fixedly connected to the second control assembly (41); the bottom of the crossbeam (3) is fixedly connected to a first rack (31) and a track (32) fixedly connected to the first rack (31); the first motor (431) is connected to a first transmission gear (432) meshingly connected to the first rack (31); and the first housing (43) is fixedly connected to a slider (433) slidably connected to the track (32).

3. A welding head according to claim 2, characterized in that: The first shell (43) is also slidably connected to the end away from the support member (51) with the second shell (44); the first shell (43) is fixedly connected to the end facing the second shell (44) with a horizontally arranged limit bar (434) whose extension direction is perpendicular to the extension direction of the first rack (31); the limit bar (434) is fixedly connected to the end away from the first shell (43) with the second rack (435); the second shell (44) is provided with a receiving groove (441) which is slidably connected to the limit bar (434) and is used to receive the limit bar (434) and the second rack (435); the second shell (44) is also fixedly connected to the inside of the second shell (44) with a second motor (442) electrically connected to the second control component (41); the second motor (442) is connected to a second transmission gear (443) meshingly connected to the second rack (435).

4. A welding head according to claim 3, characterized in that: The second shell (44) is fixedly connected to a third shell (45) at one end away from the first shell (43); the third shell (45) is fixedly connected to a third motor (451) electrically connected to the second control component (41); the third motor (451) is connected to a threaded sleeve (452); the threaded sleeve (452) is meshingly connected to a threaded rod (453); the threaded rod (453) is fixedly connected to a connecting piece (454) for mounting the first welding head (42) and slidably connected to the third shell (45).

5. A welding head according to claim 1, characterized in that: The frame (1) is also fixedly connected to a second rectifier (12) electrically connected to the first control component (2), and the second rectifier (12) is electrically connected to a second welding head (13) detachably connected to the housing and arranged at the same level as the first welding head (42).

6. A welding head according to claim 1, characterized in that: The frame (1) is also fixedly connected to a support plate (14) whose contact area with the thin plate member is larger than the contact area between the abutment member (53) and the thin plate member.

7. A welding head according to claim 1, characterized in that: The frame (1) is also fixedly connected to a third rectifier (15) electrically connected to the first control component (2); the crossbeam (3) is also fixedly connected to a fourth motor (16) electrically connected to the third rectifier (15); and the fourth motor (16) is connected to a third transmission gear (17).