Welding device for electric iron accessories

Abstract

The invention provides a welding device for an electric iron accessory, and relates to the technical field of welding devices, the welding device comprises a welding head and a mechanical arm for changing the position of the welding head, and further comprises a positioning piece for positioning a hoop; the positioning piece is mounted on the supporting table; a shaping mechanism is arranged above the positioning piece, and a correction space used for correcting the hoop is formed between the shaping mechanism and the positioning piece; the shaping mechanism is provided with a storage groove used for storing reinforcing pieces. The reinforcing sheet is limited by cooperation of the acting mechanism and the magnetic mechanism. According to the welding device for the electric iron accessory, by means of cooperation of the positioning piece and the shaping mechanism, the arc error of a hoop is corrected before welding, error curing is reduced, the problem that bolt holes are difficult to align is solved, and the assembling efficiency is improved; by means of cooperation of the magnetic mechanism and the acting mechanism, pressing and limiting of the reinforcing piece before welding and vibration destressing after welding are achieved, pre-heating treatment is matched, deformation is reduced, the strength and sealing performance of a welding joint are improved, and the service life of a product is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, and specifically relates to a welding device for electric iron accessories. Background Technology

[0002] Electric power iron fittings are a collective term for the most widely used non-standard hardware in power transmission lines, including clamps, crossarms, and guy bars. Clamps are made of Q235 / 345 steel through shearing, punching, bending, welding, and galvanizing. They are directly fastened to the pole and the conductor is hung on site. In the production process of clamps, the bent parts (i.e., both ends) in the later stage of forming are often reinforced with welded right-angle plates (or reinforcing plates) due to structural requirements.

[0003] In current clamp production, the reinforcing plate is typically welded directly to the clamp. This process presents significant technical problems: after the clamp is bent and shaped, its curvature may have a manufacturing error of ±3-8mm due to material properties and mold wear. If the reinforcing plate is directly welded to the clamp with this error, the rigid connection formed by welding will permanently solidify the error. After the clamp and reinforcing plate are welded together, the overall curvature cannot be effectively adjusted or corrected mechanically, ultimately resulting in non-compliant product dimensions. In actual use, the bolt holes of the two clamps are difficult to align, directly affecting assembly and usage. Summary of the Invention

[0004] The purpose of this invention is to provide a welding device for electric railway accessories, which solves the technical problem in the related art that the bolt hole positions are not easy to align after the clamp reinforcement welding is carried out in the welding device for electric railway accessories.

[0005] At least one embodiment of the present invention provides a welding device for electric iron accessories, including a welding head and a robotic arm for changing the position of the welding head, and a positioning element for positioning the clamp. The positioning element is installed on the support platform; A shaping mechanism is provided above the positioning component, and a correction space is formed between the shaping mechanism and the positioning component for correcting the clamp. The shaping mechanism is equipped with a storage slot for storing reinforcing plates; The plate is reinforced by the coordinated action of the magnetic mechanism and the magnetic mechanism, wherein the magnetic mechanism includes a magnetic part with variable magnetic direction, and the action mechanism includes a magnetic component that interacts with the magnetic part. When the reinforcing plate moves toward the clamp, the magnetic part, through the cooperation of the magnetic components, presses and limits the reinforcing plate; After the welding head welds the reinforcing plate to the clamp, as the shaping mechanism moves away from the clamp, the magnetic part changes its magnetic direction and interacts with the magnetic component, driving the action mechanism to reciprocate to strike the reinforcing plate to achieve vibration stress relief.

[0006] First, the positioning component positions the clamp to ensure its stability in subsequent processes. The correction space formed between the forming mechanism and the positioning component provides the necessary space for dimensional correction of the clamp. The storage slot of the forming mechanism is used to pre-place the reinforcing sheet. When the reinforcing sheet needs to move towards the clamp, the magnetic part with variable magnetic direction in the magnetic mechanism cooperates with the magnetic component of the action mechanism to apply a clamping force to the reinforcing sheet through magnetic force, thereby limiting and fixing the reinforcing sheet and preventing it from shifting before welding. Subsequently, the robotic arm adjusts the position of the welding head and welds the reinforcing sheet onto the clamp. After welding, the forming mechanism moves away from the clamp. During this process, the magnetic part changes its own magnetism and generates a new magnetic interaction with the magnetic component, driving the action mechanism to operate and reciprocate to tap the reinforcing sheet to vibrate and reduce stress.

[0007] The cooperation between the positioning component and the forming mechanism can correct the size of the clamp before welding, effectively solving the problem of arc-shaped size error of the clamp caused by the previous process. The error is reduced and solidified by the rigid connection of welding. The synergistic pressing effect of the magnetic part and the magnetic component ensures the accurate position of the reinforcing sheet during welding, and improves the stability and accuracy of the welded connection.

[0008] Post-weld reciprocating hammering and vibration stress relief can reduce the internal stress generated during the welding process, reduce the deformation of the clamps and reinforcing plates after welding, and further ensure product dimensional compliance.

[0009] According to an exemplary embodiment of this disclosure, the positioning member includes two positioning shafts and a support portion. The two positioning shafts are mounted on the support portion and are respectively configured to correspond to the clamp bolt holes.

[0010] The positioning component includes two positioning shafts and a support. The support provides a mounting base for the positioning shafts. The two positioning shafts are installed on the support according to the positions of the bolt holes on the clamp. When the clamp is placed on the positioning component, the two positioning shafts are inserted into the two bolt holes of the clamp respectively. Through the cooperation between the positioning shafts and the bolt holes, the clamp is positioned and restricted from the position of the bolt holes, ensuring the accurate position of the bolt holes of the clamp, and restricting the displacement of the clamp in the horizontal and vertical directions.

[0011] The corresponding fit between the positioning shaft and the clamp bolt holes enables the clamp to be positioned, providing a reference for subsequent welding of reinforcing plates and correction of clamp dimensions, and ensuring the consistency of bolt hole positions.

[0012] According to an exemplary embodiment of this disclosure, the support portion includes a support plate and a semi-circular protrusion adapted to the central support arc portion of the clamp. The support plate is fixedly connected to the positioning shaft, and the semi-circular protrusion is installed between two positioning shafts.

[0013] A semi-circular protrusion is installed between two positioning shafts. Its shape matches the supporting arc-shaped part in the middle of the clamp. When the clamp is placed on the positioning part, the semi-circular protrusion fully fits the supporting arc-shaped part in the middle of the clamp, providing support from the arc-shaped surface in the middle of the clamp. At the same time, it works with the two positioning shafts to position the bolt holes, achieving all-round positioning and fixing of the clamp.

[0014] The semi-circular protrusion fits snugly against the arc-shaped surface in the middle of the clamp, ensuring that the clamp is subjected to uniform force and preventing excessive local force from causing additional deformation, thus maintaining the stability of the clamp's original arc-shaped structure.

[0015] According to an exemplary embodiment of this disclosure, the shaping mechanism includes a linear actuator, a mounting frame, and a shaping mold. The linear actuator is mounted on the mounting frame, and the output end of the linear actuator is connected to the shaping mold. A storage slot is provided at the shaping mold.

[0016] Linear actuators are either hydraulic cylinders or pneumatic cylinders.

[0017] The output end of the linear actuator is connected to the molding die, which can drive the molding die to move in a straight line, thereby adjusting the size of the correction space between the molding die and the positioning part. The storage slot on the molding die is used to store the reinforcing plate, so that the reinforcing plate can move with the molding die. When the molding die approaches the clamp, it can drive the reinforcing plate to approach the clamp synchronously, preparing for subsequent welding.

[0018] The molding mold not only provides storage space for the reinforcing sheet, but also allows for dimensional correction of the clamp during movement in conjunction with the positioning components. This ensures that the arc dimensions of the clamp meet the requirements before welding, thus preventing errors from solidifying at the source.

[0019] According to an exemplary embodiment of this disclosure, the actuating mechanism further includes a striking element connected to a magnetic element.

[0020] When the magnetic part of the magnetic mechanism interacts with the magnetic component, the magnetic force is transmitted to the striking component through the magnetic component, driving the striking component to perform corresponding actions. Before the reinforcing sheet is welded, the cooperation between the magnetic part and the magnetic component indirectly applies a clamping force to the reinforcing sheet through the striking component. After welding, the magnetism of the magnetic part changes, and the magnetic component drives the striking component to reciprocate to strike the reinforcing sheet.

[0021] The linkage between the striking component and the magnetic component allows the magnetic changes of the magnetic mechanism to be converted into the action of the striking component. The striking component is designed to provide a direct action for vibration stress relief. Through reciprocating striking, it effectively releases welding internal stress, reduces deformation, and ensures the stability of the product structure.

[0022] According to an exemplary embodiment of this disclosure, the striking component includes a rod, a connecting plate, and a striking part. One end of the rod slides into the interior of the molding die, and the other end is connected to the striking part and the magnetic component respectively through the connecting plate.

[0023] One end of the insert rod slides into the mold, ensuring that the insert rod can reciprocate along the guide of the mold; the other end of the insert rod is connected to the striking part and the magnetic part respectively through the connecting plate. Before the welding is completed, the striking part presses and limits the reinforcing plate. When the magnetic part is subjected to the changing force of the magnetic part, the connecting plate drives the insert rod to slide in the mold, thereby driving the striking part to move, so that the striking part can strike the reinforcing plate.

[0024] According to an exemplary embodiment of this disclosure, a return spring is movably sleeved on the outer periphery of the insertion rod, and the return spring is connected to the molding mold and the connecting plate.

[0025] When the magnetic part interacts with the magnetic component, driving the connecting plate to move the insert rod and the striking part closer to the reinforcing plate, the return spring is compressed and stores elastic potential energy. When the magnetism of the magnetic part changes and the force on the magnetic component reverses, the return spring releases the elastic potential energy, pushing the connecting plate, insert rod and striking part to reset. This cycle repeats, and the reciprocating striking of the striking part is achieved in conjunction with the magnetic changes of the magnetic part.

[0026] The elastic restoring function of the return spring provides power assistance for the reciprocating striking of the striking part.

[0027] According to an exemplary embodiment of this disclosure, the magnetic mechanism further includes a driving member, which includes a drive motor and a mounting plate. The drive motor's drive shaft is connected to the mounting plate, and the magnetic part is disposed on the mounting plate to change the direction of magnetic action.

[0028] The driving components of the magnetic mechanism include a drive motor and a mounting plate. The drive shaft of the drive motor is connected to the mounting plate, and the magnetic part is mounted on the mounting plate. When the drive motor starts, the drive shaft drives the mounting plate to rotate. The rotation of the mounting plate drives the magnetic part on it to rotate together, thereby changing the relative position between the magnetic part and the magnetic component, realizing the change of the direction of magnetic action, and thus switching the way the magnetic part acts on the magnetic component (attraction or repulsion).

[0029] The drive motor changes the direction of magnetic action by rotating the mounting plate, making operation precise and convenient. It can quickly respond to different process requirements before and after welding, and switch between clamping limit and drive knocking functions.

[0030] According to an exemplary embodiment of this disclosure, the magnetic part includes two magnetic strips, which are respectively disposed on two sides of the mounting plate. The sides of the two magnetic strips that are far apart from each other have opposite magnetic properties, and the magnetic properties of two magnetic elements on the same side of the mounting bracket that are close to the magnetic strips are opposite to the magnetic properties of the corresponding magnetic strips.

[0031] When the drive motor drives the mounting plate to rotate, the magnetic strips on both sides of the mounting plate rotate accordingly, alternately corresponding to the magnetic components of the action mechanism. When the magnetic strips on different sides are opposite to the magnetic components, different magnetic forces of attraction or repulsion can be generated, thereby realizing the change of the magnetism of the magnetic part.

[0032] The dual magnetic strip design makes the magnetic changes of the magnetic part more reliable and stable. The correspondence between the magnetic strip and the magnetic component can be quickly switched by rotating the mounting plate to achieve the switching of magnetic force and ensure smooth switching between pressing limit and tapping stress relief action.

[0033] According to an exemplary embodiment of this disclosure, heating elements are embedded in both the semi-circular protrusion and the molding die to preheat the clamp and reinforcing sheet before welding.

[0034] Heating elements are embedded in both the semi-circular protrusion and the molding die. Before welding the clamp and reinforcing plate, the heating elements are energized and generate heat. The heat is transferred to the clamp through the semi-circular protrusion and simultaneously to the reinforcing plate through the molding die, thus preheating the clamp and reinforcing plate. This preheating process reduces the temperature difference between the clamp and reinforcing plate, minimizes thermal stress caused by drastic temperature changes during welding, reduces the probability of welding deformation, and further ensures the dimensional accuracy of the product. The preheated clamp and reinforcing plate exhibit better fusion during welding, improving the strength and sealing of the weld joint and enhancing the stability and service life of the connection between the clamp and reinforcing plate.

[0035] The beneficial effects of this invention are as follows: Compared with the prior art, the welding device for electric iron accessories provided in this embodiment of the invention, through the coordinated cooperation of positioning components and forming mechanism, corrects the arc size of the clamp before welding, effectively eliminating the ±3-8mm manufacturing error caused by the previous bending process, avoiding the error from being solidified by the welding rigid connection from the source, ensuring that the overall size of the clamp and the reinforcing plate is compliant after welding, solving the core problem of the difficulty in aligning the clamp bolt holes in the prior art, and significantly improving assembly efficiency.

[0036] Compared with the prior art, the welding device for electric iron accessories provided in this embodiment of the invention, by means of the cooperation of a magnetic mechanism and an action mechanism, achieves the clamping and limiting of the reinforcing plate before welding, avoiding welding deviation caused by the displacement of the reinforcing plate during welding; after welding, the magnetic switching drives the striking part to reciprocate to achieve vibration stress relief, which greatly reduces the deformation caused by welding internal stress. At the same time, combined with the preheating treatment before welding, it further improves the strength, sealing performance and structural stability of the welded joint, and extends the service life of the product. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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 creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of a welding device for an electric iron accessory provided in an embodiment of the present invention; Figure 2 This is an embodiment of the present invention. Figure 1 Schematic diagram of the mounting bracket; Figure 3 This is an embodiment of the present invention. Figure 1 Schematic diagram of the middle molding die; Figure 4 This is an embodiment of the present invention. Figure 1 Schematic diagram of the structure of the central clamp and reinforcing plate; Figure 5 This is an embodiment of the present invention. Figure 1 Schematic diagram of the middle molding die; Figure 6 This is an embodiment of the present invention. Figure 1 A schematic diagram of the structure of the semi-circular protrusion in the middle; In the diagram: 1. Welding head; 2. Robotic arm; 3. Clamp; 4. Positioning component; 41. Positioning shaft; 42. Support plate; 43. Semi-circular protrusion; 5. Shaping mechanism; 51. Linear actuator; 52. Mounting bracket; 53. Shaping mold; 531. Storage slot; 6. Reinforcing plate; 7. Actuating mechanism; 71. Magnetic component; 72. Insert rod; 73. Connecting plate; 74. Striking part; 75. Return spring; 8. Magnetic mechanism; 81. Drive motor; 82. Mounting plate; 83. Magnetic strip; 9. Heating element; 10. Support platform. Detailed Implementation

[0039] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of this disclosure will be explained and described below.

[0040] It should be understood that the described embodiments are merely some, not all, of the embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0041] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0042] It should be understood that the term "and / or" used in this article is merely a way of describing the logical relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0043] Depending on the context, the word "if" as used here can be interpreted as "when" or "when" or "in response to determination" or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination" or "in response to determination" or "when detection (of the stated condition or event)" or "in response to detection (of the stated condition or event)."

[0044] It should be understood that the terms "first," "second," etc., used in this disclosure are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.

[0045] In the description of this disclosure, the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation of this disclosure.

[0046] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can be fixed connections, detachable connections, mating connections or integral connections; those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0047] Example 1 like Figures 1 to 6 As shown in the figure, a welding device for an electric iron accessory according to an embodiment of the present invention includes a welding head 1, a robotic arm 2 for adjusting the position of the welding head 1, and a positioning component 4 installed on a support platform 10 for positioning the clamp 3. A shaping mechanism 5 is provided above the positioning component 4, and a correction space is formed between the two for correcting the size of the clamp 3; a storage slot 531 for storing the reinforcing piece 6 is provided on the shaping mechanism 5, and the reinforcing piece 6 is restricted in position by the cooperation of the action mechanism 7 and the magnetic mechanism 8. The magnetic mechanism 8 has a magnetic part whose magnetic action can be changed, and the action mechanism 7 is provided with a magnetic element 71 that interacts with the magnetic part. When the reinforcing piece 6 moves toward the clamp 3, the magnetic part cooperates with the magnetic element 71 to achieve the pressing and limiting of the reinforcing piece 6. After the welding head 1 welds the reinforcing piece 6 to the clamp 3, the shaping mechanism 5 moves away from the clamp 3. During this process, the magnetic part changes the direction of magnetic action and generates a magnetic interaction with the magnetic element 71, driving the action mechanism 7 to reciprocate to strike the reinforcing piece 6 to achieve the effect of vibration stress relief.

[0048] First, the positioning component 4 securely positions the clamp 3, laying the foundation for subsequent processes. The correction space formed by the shaping mechanism 5 and the positioning component 4 provides conditions for dimensional correction of the clamp 3. The storage slot 531 is used to pre-place the reinforcing piece 6. When the reinforcing piece 6 needs to move closer to the clamp 3, the magnetic part of the magnetic mechanism 8 and the magnetic component 71 of the action mechanism 7 cooperate to press the reinforcing piece 6 with magnetic force, preventing displacement before welding. Subsequently, the robotic arm 2 adjusts the position of the welding head 1 to complete the welding of the reinforcing piece 6 and the clamp 3. After welding, the shaping mechanism 5 moves away from the clamp 3, and the magnetic part changes the direction of magnetic action, driving the action mechanism 7 to reciprocate to strike the reinforcing piece 6, reducing welding internal stress. The positioning component 4 and the shaping mechanism 5 cooperate to correct the arc-shaped dimensional error of the clamp 3 caused by the previous process before welding, preventing the error from being solidified by the rigid weld connection. The coordinated pressing of the magnetic part and the magnetic component 71 ensures the accuracy of the welding position of the reinforcing piece 6 and improves the connection stability. The vibration stress relief after welding can reduce welding deformation and further ensure product dimensional compliance.

[0049] The positioning component 4 consists of two positioning shafts 41 and a support. The two positioning shafts 41 are mounted on the support and are correspondingly positioned to the bolt holes of the clamp 3. The support provides the mounting base for the positioning shafts 41. When the clamp 3 is placed on the positioning component 4, the two positioning shafts 41 are inserted into the bolt holes of the clamp 3. The fit between the shafts and the holes restricts the displacement of the clamp 3 from the bolt hole position, ensuring both accurate bolt hole positioning and restraining the movement of the clamp 3 in the horizontal and vertical directions. This corresponding fit provides a precise reference for welding the reinforcing plate 6 and correcting the dimensions of the clamp 3, effectively ensuring the consistency of the bolt hole positions.

[0050] like Figure 2 and Figure 3As shown, when the clamp 3 undergoes slight deformation, it is inserted into the positioning shaft 41 through its bolt holes. The support part specifically includes a support plate 42 and a semi-circular protrusion 43. The semi-circular protrusion 43 is adapted to the support arc-shaped part in the middle of the clamp 3 and is installed between the two positioning shafts 41. The support plate 42 is fixedly connected to the positioning shaft 41, providing stable support for the positioning shaft 41. When the clamp 3 is placed on the positioning part 4, the semi-circular protrusion 43 fits against the arc-shaped surface in the middle of the clamp 3, providing uniform support force from the arc-shaped surface. Combined with the positioning of the bolt holes by the positioning shaft 41, the clamp 3 is fixed in all directions, which can prevent the clamp 3 from being subjected to excessive local stress and causing additional deformation, and ensure the stability of its original arc-shaped structure.

[0051] like Figure 3 and Figure 5 As shown, the forming mechanism 5 includes a linear actuator 51, a mounting frame 52, and a forming mold 53. The bottom sides of the forming mold 53 have accommodating spaces adapted to the positioning shaft 41, so that the positioning shaft 41 can extend into it when the forming mold 53 moves down. The mounting frame 52 is mounted on the support platform 10. The linear actuator 51 is a hydraulic cylinder or a pneumatic cylinder, mounted on the mounting frame 52, and its output end is connected to the forming mold 53. The storage slot 531 is opened at the forming mold 53. The linear actuator 51 can drive the forming mold 53 to move in a straight line. When the forming mold 53 moves with the linear actuator 51, it will drive the reinforcing piece 6 in the storage slot 531 to move closer to the clamp 3 synchronously, preparing for welding. The forming mold 53 not only provides storage space for the reinforcing piece 6, but also can cooperate with the positioning part 4 to correct the arc size of the clamp 3 during the movement, ensuring that it meets the requirements before welding, thus avoiding the solidification of errors from the source.

[0052] like Figure 2 and Figure 3 As shown, the action mechanism 7 also includes a striking element, which is connected to the magnetic element 71. When the magnetic part of the magnetic mechanism 8 interacts with the magnetic element 71, the magnetic force is transmitted to the striking element through the magnetic element 71, driving it to complete the corresponding action: before welding, the reinforcing sheet 6 is indirectly pressed by the striking element; after welding, the magnetic part changes the magnetic direction, and the magnetic element 71 drives the striking element to repeatedly strike the reinforcing sheet 6, so that the magnetic change of the magnetic mechanism 8 is converted into a striking action, releasing the welding internal stress and reducing deformation.

[0053] like Figure 3 The striking component includes a rod 72, a connecting plate 73, and a striking part 74. One end of the rod 72 slides into the mold 53 and can reciprocate along the guide of the mold 53. The other end is connected to the striking part 74 and the magnetic component 71 through the connecting plate 73. Before welding, the striking part 74 presses the limiting reinforcing piece 6 with the magnetic force. When the magnetic component 71 is subjected to the changing force of the magnetic part, the connecting plate 73 drives the rod 72 to slide in the mold 53, thereby driving the striking part 74 to strike the reinforcing piece 6.

[0054] A return spring 75 is movably sleeved on the outer periphery of the insertion rod 72. The two ends of the return spring 75 are connected to the molding mold 53 and the connecting plate 73, respectively. When the magnetic part interacts with the magnetic component 71, driving the connecting plate 73 to move the insertion rod 72 and the striking part 74 towards the reinforcing plate 6, the return spring 75 is compressed and stores elastic potential energy. When the magnetic direction of the magnetic part changes and the force on the magnetic component 71 reverses, the return spring 75 releases the elastic potential energy, pushing the connecting plate 73, the insertion rod 72 and the striking part 74 to reset. This cycle repeats, and in conjunction with the magnetic changes of the magnetic part, the reciprocating striking of the striking part 74 is realized, providing stable power assistance for the striking action.

[0055] like Figure 3 As shown, the magnetic mechanism 8 also includes a driving component, which consists of a drive motor 81 and a mounting plate 82. The drive shaft of the drive motor 81 is connected to the mounting plate 82. The magnetic part is mounted on the mounting plate 82. When the drive motor 81 starts, the drive shaft drives the mounting plate 82 to rotate, which in turn drives the magnetic part to rotate synchronously, changing the relative position between the magnetic part and the magnetic component 71, thereby switching the direction of magnetic action (attraction or repulsion). It can quickly respond to the different process requirements before and after welding and smoothly switch between clamping limit and driving knocking functions.

[0056] The magnetic part consists of two magnetic strips 83, which are respectively installed on both sides of the mounting plate 82. The magnetic poles of the two magnetic strips 83 are opposite on the side that is far away from each other. The magnetic components 71 on the same side of the mounting bracket 52 have opposite magnetic properties on the side that is closer to the magnetic strip 83 (in one state, i.e. when the reinforcing piece 6 is limited). When the drive motor 81 drives the mounting plate 82 to rotate, the magnetic strips 83 on both sides alternately correspond to the magnetic components 71, generating different forces of attraction or repulsion, thereby changing the magnetism of the magnetic part. The double magnetic strips 83 make the magnetic switching more reliable and stable. The force switching can be completed quickly by rotating the mounting plate 82, ensuring a smooth connection between the pressing limit and the stress relief action.

[0057] Example 2 Based on Embodiment 1, heating elements 9 are embedded inside both the semi-circular protrusion 43 and the molding mold 53. These elements are used to preheat the clamp 3 and the reinforcing plate 6 before welding. When the heating element 9 is powered on, it generates heat. The heat is transferred to the clamp 3 through the semi-circular protrusion 43 and to the reinforcing plate 6 through the molding mold 53, so that the temperature of both rises evenly. This preheating treatment can reduce the temperature difference between the clamp 3 and the reinforcing plate 6, reduce the thermal stress caused by the sudden temperature change during welding, reduce the probability of welding deformation, ensure the dimensional accuracy of the product, and at the same time improve the fusion effect during welding, enhance the strength and sealing of the welded joint, and extend the service life of the connection structure between the clamp 3 and the reinforcing plate 6.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding device for electrical iron accessories, characterized in that, The utility model provides a kind of welding head (1) and mechanical arm (2) for changing the position of welding head (1);It further includes positioning member (4) for positioning hoop (3); The upper portion of positioning member (4) is provided with a shaping mechanism (5), and a correction space for correcting hoop (3) is formed between the shaping mechanism (5) and the positioning member (4); The shaping mechanism (5) is provided with a storage slot (531) for storing the reinforcing sheet (6); The reinforcing sheet (6) is limited by the cooperation of the acting mechanism (7) and the magnetic mechanism (8), wherein the magnetic mechanism (8) includes a magnetic part with variable magnetic direction, and the acting mechanism (7) includes a magnetic piece (71) interacting with the magnetic part; When the reinforcing sheet (6) moves towards the hoop (3), the magnetic part is compressed and limited to the reinforcing sheet (6) through the cooperation of the magnetic piece (71). After the welding head (1) welds the reinforcing sheet (6) to the hoop (3), during the process that the shaping mechanism (5) moves away from the hoop (3), the magnetic part changes the magnetic direction and magnetically interacts with the magnetic piece (71), which drives the acting mechanism (7) to reciprocatingly knock the reinforcing sheet (6) to achieve vibration stress relief.

2. A device for welding electrical iron accessories according to claim 1, characterized in that, The positioning member (4) includes two positioning shafts (41) and a support part, the two positioning shafts (41) are installed on the support part and correspondingly arranged with the bolt holes of the hoop (3).

3. A device for welding electrical iron accessories according to claim 2, characterized in that, The support part includes a support plate (42) and a semicircular protrusion (43) matched with the arc-shaped part of the middle part of the hoop (3), the support plate (42) is fixedly connected with the positioning shafts (41), and the semicircular protrusion (43) is installed between the two positioning shafts (41).

4. A device for welding electrical iron accessories according to claim 3, characterized in that, The shaping mechanism (5) includes a linear actuator (51), a mounting frame (52) and a shaping die (53), the linear actuator (51) is installed on the mounting frame (52), the output end of the linear actuator (51) is connected with the shaping die (53), and the storage slot (531) is arranged at the shaping die (53).

5. The apparatus of claim 1 wherein, The acting mechanism (7) further includes a knocking piece connected with the magnetic piece (71).

6. A device for welding electrical iron accessories according to claim 5, characterized in that, The knocking piece includes a plug rod (72), a connecting plate (73) and a knocking part (74), one end of the plug rod (72) slides into the inside of the shaping die (53), and the other end is connected with the knocking part (74) and the magnetic piece (71) through the connecting plate (73).

7. A device for welding electrical iron accessories according to claim 6, characterized in that A return spring (75) is movably sleeved on the outer periphery of the plug rod (72), and the return spring (75) is connected with the shaping die (53) and the connecting plate (73).

8. A device for welding electrical iron accessories according to any one of claims 1-7, characterized in that, The magnetic mechanism (8) further includes a driving piece, and the driving piece includes a driving motor (81) and a mounting plate (82), the driving shaft of the driving motor (81) is connected with the mounting plate (82), and the magnetic part is arranged on the mounting plate (82) to change the magnetic direction.

9. A device for welding electrical iron accessories according to claim 8, characterized in that, The magnetic part includes two magnetic strips (83), and the two magnetic strips (83) are arranged on the two side faces of the mounting plate (82).

10. The apparatus of claim 4 wherein, The semicircular protrusion (43) and the shaping die (53) are inlaid with heating pieces (9) to preheat the hoop (3) and the reinforcing sheet (6) before welding.

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