Powder feeding mechanism for welding equipment

Abstract

The utility model relates to the technical field of welding equipment auxiliary devices, and provides a powder feeding mechanism for welding equipment, which aims at solving the problem that an existing material distributing cavity is fixed in volume and cannot be matched with powder with different particle sizes, and comprises a hopper installed on the side wall of a welding head, a material distributing pipe is arranged at the lower end of the hopper, and a material distributing wheel is rotatably connected in the material distributing pipe. A material distributing groove is formed in the peripheral wall of the material distributing wheel, a sliding plate is slidably connected into the material distributing groove, and a material storage cavity is defined by the sliding plate, the inner wall of the material distributing groove and the inner wall of the material distributing pipe; a pushing elastic piece is arranged in the material distributing groove, a winding shaft is rotationally connected to the material distributing wheel and connected with the sliding plate through a traction belt, and the winding shaft rotates forwards to wind the traction belt so that the volume of the material storage cavity can be adjusted. The outer side wall of the hopper is provided with a rotary driving piece for driving the distributing wheel to rotate. According to the scheme, the volume of the material storage cavity is adjustable, conveying of powder with different particle sizes is adapted, and feeding stability and material distribution precision are guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for welding equipment, specifically to a powder feeding mechanism for welding equipment. Background Technology

[0002] In automated welding production, some welding processes (such as submerged arc welding and flux-cored wire welding) require the precise delivery of welding powder of specific specifications to the welding area. This powder plays a crucial role in protecting the weld pool, improving weld formation, and reducing welding defects. As a core auxiliary component of welding equipment, the powder feeding mechanism's feeding stability and dispensing accuracy directly affect welding quality and production efficiency.

[0003] Existing welding equipment typically includes a powder feeding mechanism comprising a hopper, a distribution wheel assembly, a drive motor, and a conveying pipe. The distribution wheel assembly is located at the discharge end of the hopper, and the drive motor rotates the distribution wheel, utilizing evenly spaced distribution chambers on the wheel to achieve quantitative division and conveying of the powder. However, the distribution chambers of existing distribution wheel assemblies are mostly one-piece molded structures with fixed and non-adjustable volumes.

[0004] In actual welding production, different welding materials, welding thicknesses and welding processes often require welding powders with different particle sizes (for example, finer particle size powder may be used for welding thin plates, while coarser particle size powder may be used for deep penetration welding of thick plates).

[0005] When changing to powders of different particle sizes, the fixed-volume distribution chamber cannot be adjusted adaptively, which can easily lead to a series of technical problems: First, if the distribution chamber volume is too large, the single conveying volume for fine-sized powders will be too high, which can easily lead to uneven feeding, causing powder accumulation or uneven distribution in the welding area and affecting the weld quality; Second, if the distribution chamber volume is too small, the single conveying volume for coarse-sized powders will be insufficient, and coarse-sized powders are prone to jamming at the inlet of the distribution chamber, or even causing powder blockage, resulting in interruption of feeding and reduced production efficiency; Third, when the distribution chamber volume does not match the powder particle size, accurate quantitative feeding of powder cannot be achieved, the distribution accuracy is insufficient, which further affects the stability and consistency of the welding process. Utility Model Content

[0006] To overcome the above-mentioned defects, the present invention provides a powder feeding mechanism for welding equipment, which solves the technical problem that the volume of the distributing chamber of the material distribution wheel assembly set at the discharge end of the hopper in the prior art cannot be adaptively adjusted according to the different particle size specifications of the welding powder, which easily leads to uneven feeding, powder blockage or insufficient distributing accuracy.

[0007] According to one aspect, at least one embodiment of the present invention provides a powder feeding mechanism for welding equipment, for installation on the side wall of a welding head, comprising:

[0008] A hopper is used to be installed on the side wall of the welding head, and a material distribution pipe is provided at the lower end of the hopper;

[0009] The material distributing wheel is rotatably connected to the material distributing pipe. The outer peripheral wall of the material distributing wheel is provided with several circumferentially distributed material distributing grooves. Each of the material distributing grooves is slidably connected to a sliding plate. The sliding plate, the inner wall of the material distributing groove, and the inner wall of the material distributing pipe together form a material storage cavity.

[0010] Several push elastic elements are correspondingly arranged in the material distribution groove and located between the bottom wall of the material distribution groove and the sliding plate, for providing the sliding plate with a force away from the bottom wall of the material distribution groove;

[0011] A winding shaft is rotatably connected to the material distribution wheel. The winding shaft is connected to several sliding plates via traction belts. The winding shaft can wind the traction belts by rotating forward to pull the sliding plates to slide close to the inner bottom wall of the material distribution trough, thereby increasing the capacity of the storage cavity.

[0012] A rotation drive component is located on the outer wall of the hopper and is used to drive the material distribution wheel to rotate inside the material distribution pipe.

[0013] For example, in a powder feeding mechanism for welding equipment provided in at least one embodiment of the present invention, a plurality of the push elastic elements are used in pairs, and the two push elastic elements used in pairs are symmetrically arranged in the material distribution groove.

[0014] For example, in a powder feeding mechanism for welding equipment provided in at least one embodiment of the present invention, the end of the distributing wheel away from the rotating drive member is provided with an installation groove, and the winding shaft is rotatably connected to the installation groove;

[0015] The end of the winding shaft away from the rotation drive extends out of the mounting groove and penetrates the wall of the distribution pipe. The end of the winding shaft is provided with a gripping protrusion.

[0016] For example, in a powder feeding mechanism for welding equipment provided in at least one embodiment of the present invention, the end face of the distributing wheel opposite to the rotating drive member extends and protrudes with a snap-fit ​​ring, and the inner peripheral wall of the snap-fit ​​ring is provided with a plurality of circumferentially distributed snap-fit ​​grooves.

[0017] One end of the gripping protrusion has a sliding locking block, which can slide out of the gripping protrusion to engage with any of the locking slots, thereby limiting the circumferential position of the winding shaft relative to the distributing wheel.

[0018] For example, in a powder feeding mechanism for welding equipment provided in at least one embodiment of the present invention, a guide groove is provided at one end of the gripping protrusion, the snap-fit ​​block is slidably connected in the guide groove, a snap-fit ​​elastic member is provided in the guide groove, the snap-fit ​​elastic member is located between the snap-fit ​​block and the inner bottom wall of the guide groove, and is used to provide a force for the snap-fit ​​block to move away from the inner bottom wall of the guide groove.

[0019] For example, in a powder feeding mechanism for welding equipment provided in at least one embodiment of the present invention, the side wall of the gripping protrusion is provided with a clearance groove communicating with the guide groove, and the side wall of the snap-fit ​​block is provided with a snap-fit ​​gripping part with an extended protrusion, the snap-fit ​​gripping part penetrating and slidingly engaging in the clearance groove.

[0020] For example, in a powder feeding mechanism for welding equipment provided in at least one embodiment of the present invention, one side of the snap-fit ​​block is provided with an abutting inclined surface. When the winding shaft rotates clockwise, the abutting inclined surface can abut against the edge of the snap-fit ​​groove, and the snap-fit ​​block can retract into the guide groove under the guiding action of the abutting inclined surface.

[0021] For example, in at least one embodiment of the present invention, a powder feeding mechanism for welding equipment further includes:

[0022] A feeding pipe is used to install on the side wall of the welding head. The upper end of the feeding pipe is located below the distributing pipe, and the lower end of the feeding pipe faces the area to be welded.

[0023] For example, in a powder feeding mechanism for welding equipment provided in at least one embodiment of the present invention, the upper end of the feeding pipe has a flared section, and the cross-sectional area of ​​the flared section gradually decreases from top to bottom.

[0024] For example, in a powder feeding mechanism for welding equipment provided in at least one embodiment of the present invention, the lower end of the feeding pipe has a flat section.

[0025] For example, in a powder feeding mechanism for welding equipment provided in at least one embodiment of this utility model,

[0026] The beneficial effects of the embodiments of this utility model are as follows:

[0027] In this invention, the adjustable volume of the storage chamber is achieved through the cooperation of a winding shaft, a traction belt, sliding plates, and a pushing elastic element, solving the problem that existing material distribution chambers with fixed volumes cannot accommodate powders of different particle sizes. The winding shaft is connected to several sliding plates via a traction belt, which can synchronously drive all sliding plates to slide, ensuring consistent volume in each storage chamber and improving material distribution uniformity. The pushing elastic element provides a restoring force for the sliding plates, eliminating the need for additional reverse driving force and simplifying volume adjustment operations. The sliding plates, along with the material distribution trough and pipe, form a storage chamber with a stable structure, preventing powder leakage. The rotation drive drives the material distribution wheel to rotate, which is independent of volume adjustment, allowing volume adjustment during feeding and ensuring continuity. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a powder feeding mechanism for a welding device in one embodiment of the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of the internal structure of the first cross-section of the powder feeding mechanism in the embodiment;

[0031] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 for Figure 1 A schematic diagram of the internal structure of the powder feeding mechanism in the second cross section of the embodiment;

[0033] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0034] Figure 6 for Figure 1 Enlarged view at point C;

[0035] Figure 7 for Figure 1 The second-view structural diagram of the powder feeding mechanism in the embodiment is shown.

[0036] In the diagram: 100, welding head; 1, hopper; 2, material distribution pipe; 3, material distribution wheel; 31, material distribution groove; 32, sliding plate; 33, material storage chamber; 34, pushing elastic element; 4, winding shaft; 41, traction belt; 36, mounting groove; 42, gripping protrusion; 35, snap-fit ​​protrusion; 351, snap-fit ​​groove; 43, snap-fit ​​block; 44, guide slide; 45, snap-fit ​​elastic element; 46, clearance slide; 431, snap-fit ​​gripping part; 432, abutting slope; 5, feeding pipe; 51, flared section; 52, flat section. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0038] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0039] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Automated welding technology is applied in fields such as machinery manufacturing, construction engineering, and pipeline laying. Processes such as submerged arc welding and flux-cored wire welding require the delivery of welding powder of specific specifications to the welding area. Welding powder protects the weld pool, prevents air intrusion, improves weld formation, and reduces welding defects; it is an auxiliary material for welding quality. The powder feeding mechanism is a core auxiliary component of welding equipment, and its feeding stability and dispensing accuracy directly affect welding quality and production efficiency. Existing powder feeding mechanisms have a one-piece molded structure with a fixed volume, which cannot adapt to the conveying needs of welding powders with different particle sizes, easily leading to problems such as uneven feeding, powder blockage, and insufficient dispensing accuracy. This solution addresses this issue by providing a powder feeding mechanism with an adjustable storage chamber volume and stable conveying.

[0044] like Figure 1 As shown, the powder feeding mechanism of this solution is installed on the side wall of the welding head 100, and the whole includes components such as hopper 1, distributing pipe 2, distributing wheel 3, winding shaft 4, rotating drive component, and feeding pipe 5. Hopper 1 is used to store welding powder, and its lower end is connected to and internally communicates with the distributing pipe 2. The distributing pipe 2 is a hollow tubular structure that provides installation space for the distributing wheel 3. The distributing wheel 3 is rotatably connected to the inside of the distributing pipe 2, and the outer peripheral wall of the distributing wheel 3 fits against the inner wall of the distributing pipe 2 to prevent powder leakage from gaps.

[0045] Optionally, the rotation drive component is a servo motor, which is bolted to a mounting bracket on the outer wall of the hopper 1. The output shaft of the servo motor is connected to one end of the distributing wheel 3 via a coupling. The servo motor is electrically connected to an external control system, allowing the rotation speed to be adjusted according to the welding speed to ensure that the material supply matches the welding requirements. The servo motor enables precise driving of the distributing wheel 3, ensuring stable rotation speed and providing a foundation for quantitative powder conveying.

[0046] The outer peripheral wall of the material distribution wheel 3 is provided with several circumferentially distributed material distribution grooves 31. The material distribution grooves 31 extend along the axial direction of the material distribution wheel 3 and are evenly distributed on the outer peripheral wall of the material distribution wheel 3. Each material distribution groove 31 is slidably connected to a sliding plate 32. The shape of the sliding plate 32 is adapted to the inner cavity of the material distribution groove 31. The sliding plate 32, the inner wall of the material distribution groove 31 and the inner wall of the material distribution pipe 2 together form a material storage cavity 33, which is used to contain welding powder.

[0047] Each material distribution trough 31 is equipped with a pushing elastic element 34, which is located between the inner bottom wall of the material distribution trough 31 and the sliding plate 32. One end of the pushing elastic element 34 is connected to the inner bottom wall of the material distribution trough 31, and the other end is connected to the sliding plate 32. The pushing elastic element 34 provides a force to the sliding plate 32 away from the inner bottom wall of the material distribution trough 31. The winding shaft 4 is rotatably connected to the material distribution wheel 3 and is coaxial with the material distribution wheel 3. A traction belt 41 is connected between the winding shaft 4 and each sliding plate 32. One end of the traction belt 41 is wound around the winding shaft 4, and the other end is connected to the side of the sliding plate 32 near the inner bottom wall of the material distribution trough 31. When the winding shaft 4 rotates forward, it winds up the traction belt 41, and pulls the sliding plate 32 to slide towards the inner bottom wall of the material distribution groove 31, increasing the capacity of the storage cavity 33. When the winding shaft 4 rotates in reverse, it releases the traction belt 41, and pushes the elastic element 34 to push the sliding plate 32 away from the inner bottom wall of the material distribution groove 31, decreasing the capacity of the storage cavity 33. The forward and reverse rotations of the winding shaft 4 are opposite directions of rotation around the same axis.

[0048] To address the issue of tilting or jamming during the sliding process of the sliding plate, several push-elastic elements 34 are used in pairs, with the two push-elastic elements 34 in a pair symmetrically arranged within the material distribution groove 31. For example... Figure 3 As shown, the paired push elastic elements 34 are located on both sides of the bottom wall of the distribution groove 31, and their connection points with the sliding plate 32 are symmetrical about the central axis of the distribution groove 31. This structure ensures that the elastic forces on both sides of the sliding plate 32 are equal in magnitude and opposite in direction, achieving force balance and ensuring that the sliding plate 32 slides smoothly along the inner wall of the distribution groove 31. This avoids gaps caused by tilting, prevents powder from entering the sliding mating surface and causing wear or blockage, extends the service life of the sliding plate 32 and the distribution groove 31, and at the same time ensures the consistency of volume adjustment of each storage cavity 33, improving the uniformity of synchronous feeding of multiple storage cavities 33.

[0049] To address the issues of inconvenient installation and difficulty in manual adjustment of the winding shaft 4, a mounting groove 36 is provided at the end of the feed wheel 3 facing away from the rotation drive component, and the winding shaft 4 is rotatably connected within the mounting groove 36. Figure 3 As shown, the mounting groove 36 is recessed along the axial direction of the feed wheel 3. The winding shaft 4 is rotatably connected inside the mounting groove 36 through a bearing. The inner ring of the bearing is connected to the winding shaft 4, and the outer ring is connected to the inner wall of the mounting groove 36.

[0050] The end of the winding shaft 4 away from the rotating drive extends out of the mounting groove 36. The feed tube 2 has a through hole at the position where the winding shaft 4 extends. The winding shaft 4 passes through the through hole and extends out of the tube wall of the feed tube 2. The end of the winding shaft 4 is provided with a gripping protrusion 42. The outer peripheral wall of the gripping protrusion 42 is provided with anti-slip texture.

[0051] The mounting groove 36 provides built-in mounting space for the winding shaft 4, ensuring that the installation of the winding shaft 4 does not occupy the outer peripheral space of the distributing wheel 3 and avoids interference with the inner wall of the distributing tube 2. The winding shaft 4 and the distributing wheel 3 are coaxially arranged to ensure that the winding length of each traction belt 41 is consistent when the winding shaft 4 rotates, further improving the synchronization of the adjustment of each sliding plate 32. The grip protrusion 42 provides operators with a convenient manual adjustment component, eliminating the need for additional drive components, reducing equipment manufacturing costs. The anti-slip texture increases the contact force between the hand and the grip protrusion 42, preventing relative slippage during adjustment and improving operational reliability.

[0052] To address the issue of accidental rotation of the winding shaft 4 causing volume shift in the storage cavity 33, the material distribution wheel 3 has a protruding locking ring 35 extending from the end face opposite to the rotation drive component. The inner circumferential wall of the locking ring 35 has several circumferentially distributed locking grooves 351. For example... Figure 5 As shown, the snap-fit ​​ring 35 is coaxially arranged with the material distribution wheel 3. The inner peripheral wall of the snap-fit ​​ring 35 has a plurality of snap-fit ​​grooves 351 evenly distributed in the circumferential direction. The snap-fit ​​grooves 351 are formed by radial recesses along the snap-fit ​​ring 35.

[0053] A locking block 43 slides on one end of the gripping protrusion 42 near the distributing wheel 3. The locking block 43 can slide out of the gripping protrusion 42 and engage with any locking groove 351 to restrict the circumferential position of the winding shaft 4 relative to the distributing wheel 3. The engagement structure of the locking protrusion 35 and the locking block 43 mechanically restricts the circumferential rotation of the winding shaft 4, preventing accidental rotation of the winding shaft 4 due to vibration or external interference during the rotation of the distributing wheel 3. This prevents the volume of the storage cavity 33 from shifting, ensuring the stability of the powder conveying volume and improving the distributing accuracy. Several circumferentially distributed locking grooves 351 provide multiple positioning positions for the winding shaft 4, enabling graded adjustment of the volume of the storage cavity 33 to meet the precise volume requirements for conveying powders of different particle sizes.

[0054] To address the issue of the locking block 43 failing to automatically reset, a guide groove 44 is provided at one end of the holding protrusion 42. The locking block 43 is slidably connected within the guide groove 44, and a locking elastic element 45 is provided within the guide groove 44. Figure 5As shown, the guide groove 44 extends radially along the gripping protrusion 42, the shape of the snap block 43 is adapted to the inner cavity of the guide groove 44, and the snap elastic member 45 is located between the snap block 43 and the inner bottom wall of the guide groove 44. One end of the snap elastic member 45 is connected to the inner bottom wall of the guide groove 44, and the other end is connected to the snap block 43. When the snap elastic member 45 is in its natural state, the end of the snap block 43 away from the inner bottom wall of the guide groove 44 extends outward from the outer peripheral wall of the gripping protrusion 42.

[0055] The guide groove 44 provides a precise sliding trajectory for the locking block 43, preventing tilting or offset during sliding and ensuring that the locking block 43 can be accurately embedded in the locking groove 351, thus improving the reliability of the locking fit. The locking elastic element 45 provides a continuous elastic force to the locking block 43, enabling the locking block 43 to have an automatic reset function. The operator only needs to complete the operation process of pressing to unlock, rotating to adjust, and releasing to lock, simplifying the adjustment steps of the material storage cavity 33 volume and improving the convenience of operation. At the same time, the continuous elastic force makes the locking fit between the locking block 43 and the locking groove 351 tighter, which can effectively resist the vibration generated by the rotation of the distributing wheel 3 and prevent the locking block 43 from accidentally disengaging from the locking groove 351.

[0056] To solve the problem of inconvenient operation of the snap-fit ​​block 43, the side wall of the grip protrusion 42 is provided with a clearance groove 46 that communicates with the guide groove 44, and the side wall of the snap-fit ​​block 43 is provided with an extended protrusion snap-fit ​​grip part 431, which passes through and slides in the clearance groove 46.

[0057] like Figure 6 As shown, the clearance groove 46 extends axially along the grip protrusion 42 and communicates with the guide groove 44. The snap-fit ​​grip portion 431 extends radially along the snap-fit ​​block 43, passes through the clearance groove 46 and extends to the outside of the grip protrusion 42. The snap-fit ​​grip portion 431 can slide along the extension direction of the clearance groove 46, causing the snap-fit ​​block 43 to slide in the guide groove 44.

[0058] The engaging structure of the snap-fit ​​grip 431 and the clearance groove 46 provides operators with a convenient force-applying component. Without the need for additional tools, the extension and retraction of the snap-fit ​​block 43 can be completed simply by moving the snap-fit ​​grip 431 with a finger, improving operational efficiency. The clearance groove 46 limits the sliding stroke of the snap-fit ​​grip 431, preventing excessive sliding of the snap-fit ​​block 43 due to excessive force applied by the operator. This prevents excessive compression and damage to the snap-fit ​​elastic element 45, extending its service life. The snap-fit ​​grip 431 extends to the outside of the grip protrusion 42, allowing operators to directly observe the working status of the snap-fit ​​block 43, facilitating timely detection of faults in the snap-fit ​​structure and improving the convenience of equipment maintenance.

[0059] To address the issue of needing to manually unlock the locking structure when the volume of the storage cavity 33 increases, abutting slope 432 is provided on one side of the locking block 43. When the winding shaft 4 rotates clockwise, the abutting slope 432 can abut against the edge of the locking groove 351, and the locking block 43 can retract into the guide groove 44 under the guidance of the abutting slope 432.

[0060] like Figure 5 As shown, the abutting inclined surface 432 is inclined in the forward rotation direction of the winding shaft 4. When the winding shaft 4 rotates forward, the edge of the locking groove 351 contacts the abutting inclined surface 432 and generates pressure. The abutting inclined surface 432 decomposes the pressure into an inward component force along the guide groove 44, which pushes the locking block 43 to retract into the guide groove 44 against the force of the locking elastic element 45, thus releasing the locking engagement.

[0061] This structure enables automatic unlocking when the winding shaft 4 rotates forward. Operators do not need to manually disengage the locking mechanism; they only need to rotate the gripping protrusion 42 to increase the volume of the storage chamber 33, which greatly simplifies the operation and improves adjustment efficiency.

[0062] This structure automatically unlocks only when the winding shaft 4 rotates forward, and still requires manual unlocking when the winding shaft 4 rotates in reverse. This effectively prevents the storage cavity 33 from shrinking due to accidental rotation when the winding shaft 4 rotates in reverse, thus ensuring the stability of the volume of the storage cavity 33.

[0063] Furthermore, in order to solve the problem of easy scattering of powder during the conveying process, the powder feeding mechanism also includes a feeding pipe 5. The feeding pipe 5 is used to install on the side wall of the welding head 100. The upper end of the feeding pipe 5 is located below the distribution pipe 2, and the lower end of the feeding pipe 5 faces the area to be welded.

[0064] like Figure 7 As shown, the feeding pipe 5 is installed on the side wall of the welding head 100 via a bracket. The bracket is connected to the side wall of the welding head 100, and the feeding pipe 5 is connected to the bracket. The axis of the feeding pipe 5 is set at a preset angle to the axis of the distributing pipe 2. The upper opening of the feeding pipe 5 corresponds to the discharge trajectory of the storage chamber 33 on the distributing wheel 3, and the lower end extends above the area to be welded. The feeding pipe 5 provides a dedicated conveying channel for the powder, preventing the powder released from the storage chamber 33 from scattering due to airflow or vibration during its descent, reducing powder waste, and ensuring the cleanliness of the welding area. The upper end of the feeding pipe 5 is located below the distributing pipe 2 and corresponds to the discharge trajectory of the storage chamber 33, ensuring that all the powder released from the storage chamber 33 falls into the feeding pipe 5, improving the utilization rate of powder conveying. The feeding pipe 5 moves synchronously with the welding head 100, ensuring that the powder feeding position is always consistent with the welding position. This avoids powder feeding deviation caused by the movement of the welding head 100, ensuring that the weld pool can be adequately protected by powder and improving weld quality.

[0065] To address the issue of powder scattering caused by the rotational deviation of the distribution wheel 3, the upper end of the feeding pipe 5 has a flared section 51, the cross-sectional area of ​​which gradually decreases from top to bottom. For example... Figure 1 and Figure 2 As shown, the flared section 51 is integrally formed with the main body of the feeding pipe 5. The upper opening of the flared section 51 is the feed inlet, and the lower opening is connected to the upper opening of the main body of the feeding pipe 5. The size of the upper feed inlet of the flared section 51 is larger than the inner diameter of the main body of the feeding pipe 5, and covers the discharge range of the material storage cavity 33 on the material distribution wheel 3. By increasing the area of ​​the upper feed inlet, the flared section 51 expands the receiving range of powder, ensuring that the powder released from the material storage cavity 33 can fall smoothly into the feeding pipe 5 regardless of whether there is a slight deviation, thus preventing the powder from scattering.

[0066] The cross-sectional area of ​​the flared section 51 gradually decreases from top to bottom, which guides the powder and allows it to smoothly enter the main body of the feed pipe 5, preventing it from accumulating at the inlet. The flared section 51 and the main body of the feed pipe 5 are integrally formed, reducing the number of connection points and preventing powder residue or leakage at the connection gaps, thus improving the sealing of the conveying channel.

[0067] To address the issue of powder not evenly covering the area to be welded, the lower end of the feeding pipe 5 has a flat section 52. For example... Figure 1 and Figure 2 As shown, the flat section 52 is integrally formed with the main body of the feeding pipe 5. The flat section 52 has a rectangular cross-section. The upper end of the flat section 52 is connected to the lower end of the main body of the feeding pipe 5, and the lower opening faces the area to be welded. The length direction of the flat section 52 is consistent with the weld length direction of the area to be welded, and the opening width is adapted to the weld width. By converting the circular outlet into a rectangular outlet, the flat section 52 increases the coverage area of ​​the powder in the weld direction, allowing the powder to evenly cover the entire area to be welded. The structure where the opening width is adapted to the weld width avoids waste caused by excessive powder coverage or insufficient protection caused by insufficient coverage. The integral formation of the flat section 52 with the main body of the feeding pipe 5 ensures the smoothness of the conveying channel, prevents powder from accumulating and clogging at the connection points, and improves the stability of powder conveying.

[0068] The working process of the powder feeding mechanism is as follows: In the initial state, the push elastic element 34 applies a force to the sliding plate 32 away from the bottom wall of the material distribution groove 31, the sliding plate 32 is located in the material distribution groove 31 away from its bottom wall, and the storage cavity 33 is in the initial capacity state.

[0069] When it is necessary to transport powders of different particle sizes, if it is necessary to increase the volume of the storage cavity 33, the gripping protrusion 42 is rotated directly to drive the winding shaft 4 to rotate forward. During the rotation of the winding shaft 4, the edge of the locking groove 351 contacts the abutting inclined surface 432 of the locking block 43 and generates compression. Under the guidance of the abutting inclined surface 432, the locking block 43 retracts into the guide groove 44, releasing the locking engagement. The winding shaft 4 continues to rotate forward to wind up the traction belt 41 connected to each sliding plate 32. The traction belt 41 applies a pulling force to the sliding plate 32 towards the bottom wall of the distribution groove 31. The sliding plate 32 overcomes the force of the pushing elastic element 34 and slides in the distribution groove 31. The capacity of the storage cavity 33 increases. After adjusting to the target volume, the winding shaft 4 stops rotating. The locking elastic element 45 pushes the locking block 43 outward and embeds it into the corresponding locking groove 351 to achieve the positioning of the winding shaft 4.

[0070] If it is necessary to reduce the volume of the storage cavity 33, the snap-fit ​​grip 431 is moved to drive the snap-fit ​​block 43 back into the guide groove 44, releasing the snap-fit ​​engagement. The elastic element 34 is pushed to release the elastic potential energy, pushing the sliding plate 32 to slide away from the bottom wall of the material distribution groove 31. The traction belt 41 is gradually released as the sliding plate 32 slides. The winding shaft 4 reverses as the traction belt 41 is released. After adjusting to the target volume, the snap-fit ​​grip 431 is released, and the snap-fit ​​block 43 automatically embeds into the snap-fit ​​groove 351 to complete the positioning.

[0071] After the volume of the storage chamber 33 is adjusted, the rotating drive is started. The rotating drive drives the material distribution wheel 3 to rotate in the material distribution pipe 2. When the storage chamber 33 on the material distribution wheel 3 rotates to communicate with the inside of the hopper 1, the powder in the hopper 1 enters the storage chamber 33 and fills the storage chamber 33.

[0072] As the distributing wheel 3 continues to rotate, when the storage chamber 33 containing powder rotates to the position below the distributing pipe 2 corresponding to the flared section 51 at the upper end of the feeding pipe 5, the powder in the storage chamber 33 detaches from the storage chamber 33 under the action of gravity and falls into the flared section 51. The powder slides along the inner wall of the flared section 51 and is guided into the main body of the feeding pipe 5. Subsequently, it is conveyed along the main body of the feeding pipe 5 to the flat section 52, where it diffuses and is evenly distributed along its length. Finally, it is conveyed from the lower opening of the flat section 52 to the area to be welded, forming a powder covering layer consistent with the length direction of the weld. When the welding head 100 moves, the hopper 1 and the feeding pipe 5 move synchronously with the welding head 100, the distributing wheel 3 continues to rotate, and each storage chamber 33 sequentially completes the continuous and precise conveying of powder.

[0073] Optionally, the rotation drive can also be a stepper motor. The stepper motor is connected to the distributing wheel 3 through a gear transmission mechanism. The gear transmission mechanism includes a driving gear connected to the output shaft of the stepper motor and a driven gear connected to the distributing wheel 3. The driving gear and the driven gear mesh, and the rotation drive of the distributing wheel 3 is realized through gear transmission. This structure has stable transmission and can accurately control the rotation angle of the distributing wheel 3, further improving the distributing accuracy.

[0074] Optionally, the traction belt 41 is made of nylon, and both the pushing elastic element 34 and the snap-fit ​​elastic element 45 can be made of helical springs. Helical springs have a simple structure, stable elastic performance, and can provide a continuous and uniform elastic force.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A powder feeding mechanism for welding equipment, used for installation on the side wall of a welding head (100), characterized in that, include: A hopper (1) is used to be installed on the side wall of the welding head (100), and a material distribution pipe (2) is provided at the lower end of the hopper (1). The material distribution wheel (3) is rotatably connected to the material distribution pipe (2). The outer peripheral wall of the material distribution wheel (3) is provided with several circumferentially distributed material distribution grooves (31). Each of the several material distribution grooves (31) is slidably connected with a sliding plate (32). The sliding plate (32), the inner wall of the material distribution groove (31), and the inner wall of the material distribution pipe (2) together form a material storage cavity (33). Several push elastic elements (34) are provided one-to-one in the material distribution groove (31) and located between the bottom wall of the material distribution groove (31) and the sliding plate (32) to provide the sliding plate (32) away from the bottom wall of the material distribution groove (31); The winding shaft (4) is rotatably connected to the material distribution wheel (3). The winding shaft (4) and several sliding plates (32) are connected by a traction belt (41). The winding shaft (4) can wind the traction belt (41) by rotating forward to pull the sliding plate (32) to slide close to the inner bottom wall of the material distribution groove (31) in the material distribution groove (31) to increase the capacity of the storage cavity (33). A rotation drive is located on the outer wall of the hopper (1) and is used to drive the material distribution wheel (3) to rotate inside the material distribution pipe (2).

2. The powder feeding mechanism for welding equipment according to claim 1, characterized in that, Several of the aforementioned push elastic elements (34) are used in pairs, and the two push elastic elements (34) used in pairs are symmetrically arranged in the material distribution groove (31).

3. The powder feeding mechanism for welding equipment according to claim 1, characterized in that, The material distribution wheel (3) has an installation groove (36) at one end away from the rotating drive component, and the winding shaft (4) is rotatably connected to the installation groove (36). The winding shaft (4) extends out of the mounting groove (36) at one end away from the rotation drive and passes through the wall of the distribution pipe (2). The end of the winding shaft (4) is provided with a gripping protrusion (42).

4. The powder feeding mechanism for welding equipment according to claim 3, characterized in that, The material distribution wheel (3) extends from the end face away from the rotating drive component and has a snap-fit ​​ring (35) protruding. The inner peripheral wall of the snap-fit ​​ring (35) is provided with a plurality of circumferentially distributed snap-fit ​​grooves (351). One end of the gripping protrusion (42) has a sliding snap block (43), which can slide out of the gripping protrusion (42) to engage with any of the snap slots (351), thereby limiting the circumferential position of the winding shaft (4) relative to the feed wheel (3).

5. The powder feeding mechanism for welding equipment according to claim 4, characterized in that, One end of the gripping protrusion (42) is provided with a guide groove (44), and the snap-fit ​​block (43) is slidably connected in the guide groove (44). The guide groove (44) is provided with a snap-fit ​​elastic element (45), which is located between the snap-fit ​​block (43) and the inner bottom wall of the guide groove (44) and is used to provide a force for the snap-fit ​​block (43) to move away from the inner bottom wall of the guide groove (44).

6. The powder feeding mechanism for welding equipment according to claim 5, characterized in that, The side wall of the grip protrusion (42) is provided with a relief groove (46) that communicates with the guide groove (44). The side wall of the snap block (43) is provided with an extended protruding snap grip portion (431). The snap grip portion (431) passes through and slides within the relief groove (46).

7. The powder feeding mechanism for welding equipment according to claim 5, characterized in that, The snap-fit ​​block (43) has an abutting slope (432) on one side. When the winding shaft (4) rotates clockwise, the abutting slope (432) can abut against the edge of the snap-fit ​​groove (351), and the snap-fit ​​block (43) can retract into the guide groove (44) under the guidance of the abutting slope (432).

8. The powder feeding mechanism for welding equipment according to claim 1, characterized in that, Also includes: The feeding pipe (5) is used to be installed on the side wall of the welding head (100). The upper end of the feeding pipe (5) is located below the distributing pipe (2), and the lower end of the feeding pipe (5) faces the area to be welded.

9. A powder feeding mechanism for welding equipment according to claim 8, characterized in that, The upper end of the feeding pipe (5) has a flared section (51), and the cross-sectional area of ​​the flared section (51) gradually decreases from top to bottom.

10. A powder feeding mechanism for welding equipment according to claim 8, characterized in that, The lower end of the feed tube (5) has a flat section (52).

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