A kind of anti-spill drug core welding wire powder adding mechanism

Abstract

The utility model discloses a kind of powder adding mechanisms of anti-spilling flux-cored wire, including conveying seat, dosing assembly and forming frame group.Control cabinet and wire feeder group are fixedly installed on the surface of conveying seat, dosing assembly is fixedly installed in control cabinet one side, forming frame group is fixed on the surface of conveying seat and located just below dosing assembly.Dosing assembly includes hopper, motor and stirring shaft, stirring shaft bottom end is equipped with shaft rotary leaf, hopper bottom end is connected guide chute, material sensor is equipped in guide chute, motor drives stirring shaft rotation to realize medicine powder discharging conveying.Forming frame group includes fixed seat and guide mould, for guiding steel band to U-shaped section in turn and finally forming into tubular, realize medicine powder stable filling and anti-spilling.The utility model compact structure, guarantee medicine powder filling uniformity, simultaneously, through sensor and control cabinet form closed-loop control, improve the stability and automation degree of flux-cored wire production, applicable to the continuous production of multiple specifications flux-cored wire.

Description

Technical Field

[0001] This utility model relates to the technical field of welding wire generation equipment, specifically a mechanism for adding powder to prevent spillage of flux-cored welding wire. Background Technology

[0002] Flux-cored welding wire, also known as powder-cored welding wire or tubular welding wire, is a widely used welding material in the welding field. Its manufacturing process typically involves: first, rolling a steel strip into a U-shaped cross-section; then, filling the U-shaped steel strip with a pre-mixed welding powder; subsequently, forming a tubular structure through high-frequency welding or edge rolling; and finally, pressing it through a rolling mill to produce flux-cored welding wires of various specifications through a drawing process. This type of welding wire has advantages such as high welding efficiency, adjustable flux composition, and good weld formation, and therefore has been widely used in structural welding, shipbuilding, pressure vessels, and heavy machinery manufacturing.

[0003] In existing technologies, the preparation of flux-cored welding wire typically involves three main steps: steel strip forming, flux filling, and wire drawing. Typical flux filling structures often employ a fixed hopper or simple feeding device, directly sprinkling the flux onto the surface of the steel strip as it forms a U-shaped cross-section, followed by bending and sealing using a mechanical guide die. However, existing processes have the following shortcomings and problems: Powder spillage is common: In the existing welding powder filling process, the material feeding speed of the hopper is unstable, and there is vibration and speed fluctuation when the steel strip is drawn and formed, which leads to uneven filling of the powder or even spillage. This not only wastes the powder, but also affects the internal density and welding performance of the flux-cored wire.

[0004] Poor molding synchronization: Most existing guide mold structures are single-segment or simple multi-segment guide structures, which are insufficient for guiding the steel strip from straight strip to U-shape and then to tubular shape. When the feeding speed and the steel strip drawing speed are not matched, incomplete powder filling or local cavity problems are likely to occur.

[0005] Lack of automatic control: Most existing flux-cored welding wire production equipment relies solely on wire feeding units with a fixed speed for wire drawing, lacking real-time monitoring and automatic adjustment functions for the feeding rate. It is impossible to dynamically control the wire feeding speed according to the supply of flux powder, resulting in limited production efficiency and stability.

[0006] Therefore, existing flux-cored wire feeding mechanisms still have significant shortcomings in terms of flux filling uniformity, spill prevention, and automation control. There is an urgent need for an improved feeding mechanism that can achieve stable flux filling, prevent spillage, and be linked to wire feeding speed control, in order to improve the stability of flux-cored wire production and the quality of finished products. Utility Model Content

[0007] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0008] Therefore, the technical solution adopted by this utility model is as follows: a spill-proof flux-cored welding wire powder filling mechanism, including a conveyor base, a powder filling component, and a forming frame assembly. The conveyor base serves as the overall load-bearing foundation, with a control box and a wire feeding unit fixedly mounted on its surface. The control box receives sensor signals and controls the operating status of the wire feeding unit. The powder filling component is fixed to one side of the control box and is used to fill the welding wire with flux powder. The forming frame assembly is fixed to the surface of the conveyor base and located directly below the powder filling component. During the wire drawing process, it guides the steel strip gradually into a U-shaped cross-section and forms a tubular structure, thereby achieving precise powder filling and preventing spillage. Through closed-loop control formed by the control box and material sensors, the operating speed of the wire feeding unit can be adjusted in real time according to the falling flux powder rate, synchronizing the powder filling process with the steel strip forming speed, thus effectively improving the stability of flux-cored welding wire production.

[0009] In a preferred embodiment, the anti-spillage flux-cored welding wire powder feeding mechanism of this invention includes: a conveyor base, a dosing assembly, and a forming frame assembly; a control box and a wire feeder are fixedly mounted on the surface of the conveyor base; the dosing assembly is fixedly mounted on one side of the control box, and the forming frame assembly is fixedly mounted on the surface of the conveyor base and located directly below the dosing assembly. The dosing assembly includes a hopper, a motor, and a stirring shaft rotatably mounted inside the hopper. A shaft vane is fixedly connected to the bottom end of the stirring shaft, and a guide hopper is fixedly connected to the bottom end of the hopper. A material sensor is fixedly mounted inside the guide hopper. During the wire drawing process, the forming frame assembly guides the steel strip into a U-shaped cross-section and ultimately forms a tubular structure. This solution achieves stable feeding of flux powder from the dosing assembly and precise filling into the formed steel strip, effectively avoiding flux powder spillage.

[0010] In a preferred embodiment, the output of the material sensor is electrically connected to the input of the control chassis, and the control chassis controls the start-up, shutdown, and speed adjustment of the wire feeder unit based on the feedback signal from the material sensor.

[0011] Specifically, this solution uses sensors to sense the speed of falling powder, enabling automatic matching between the powder feeding rate and the welding wire conveying rate, thereby improving the stability and consistency of the production process.

[0012] In a preferred embodiment, the forming frame assembly includes a fixed base and a guide mold. The fixed base is fixed to both ends of the guide mold to stabilize it. The guide mold has a three-section structure, including a straight guide section, a U-shaped guide section, and a sleeve section, which are used to guide the steel strip, guide the steel strip into a U-shaped cross section, and finally form a tubular structure, respectively.

[0013] Specifically, this solution ensures the continuity and stability of the steel strip forming process, providing stable conditions for precise filling of the powder.

[0014] In a preferred embodiment, the wire feeder unit is further configured to include a drive motor and a feeding roller assembly, which consists of several rotating rollers located on the upper and lower sides of the welding wire and pulls the welding wire under the action of the drive motor.

[0015] Specifically, this solution ensures stable feeding of the welding wire during the drawing and forming process, preventing powder spillage or uneven filling caused by unstable feeding.

[0016] In a preferred example, the control chassis is configured as a PLC controller or a microcontroller, and the material sensor is an infrared or ultrasonic material sensor used to sense the falling speed of the powder.

[0017] Specifically, the solution forms a highly responsive automatic control system that enables real-time matching between the powder filling rate and the steel strip forming rate.

[0018] In a preferred embodiment, the hopper is further configured as follows: the stirring shaft is rotatably mounted along the axis of the hopper, and the surface of the stirring shaft is provided with a paddle that slides against the inner wall of the hopper.

[0019] Specifically, this solution enables the powder to be uniformly stirred inside the hopper and smoothly fed, preventing powder bridging or blockage.

[0020] In a preferred embodiment, the shaft blades are further configured as spiral ribbon mixing shaft blades, which realize continuous feeding and conveying of materials during rotation.

[0021] Specifically, this solution ensures the continuity and stability of powder feeding, further preventing powder from accumulating or spilling at the feed hopper.

[0022] Through the combination of the above technical solutions, this utility model achieves precise control of powder filling and anti-spillage effect, and improves the stability, automation level and product consistency of flux-cored welding wire production.

[0023] The beneficial effects achieved by this utility model are as follows: 1. In this utility model, by sequentially arranging the control box, wire feeding unit, dosing component and forming frame group on the conveyor seat, the precise feeding of the flux powder and the synchronous forming of the steel strip are realized, so that the flux-cored welding wire is filled with flux powder evenly during the drawing and forming process, which significantly reduces the risk of flux powder leakage and spillage, and improves the yield and production stability of flux-cored welding wire.

[0024] 2. In this utility model, by combining a material sensor with a control box, real-time detection of the feeding rate and automatic adjustment of the wire feeding speed are achieved, forming a closed-loop control system. Combined with the three-section structure of the guide mold (straight guide section, U-guide section and sleeve section), not only is the accuracy of steel strip forming guaranteed, but also efficient, stable and leak-free filling of the flux-cored welding wire is achieved, thus improving the automation level and reliability of the flux-cored welding wire production line as a whole. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the dosing assembly and welding wire structure according to one embodiment of the present invention; Figure 3 This is a schematic diagram of the molding frame assembly structure according to one embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of a dosing assembly according to an embodiment of the present invention.

[0026] Figure label: 100. Conveyor base; 110. Control box; 120. Wire feeding unit; 200. Dosing assembly; 210. Dosing hopper; 220. Motor; 230. Stirring shaft; 240. Material sensor; 211. Feed hopper; 231. Shaft vane; 300. Forming frame assembly; 310. Fixing base; 320. Guide mold. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0028] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0029] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a spill-proof flux-cored welding wire powder feeding mechanism.

[0030] Combination Figures 1-4 As shown, the present invention provides a spill-proof flux-cored welding wire powder feeding mechanism, comprising: The system includes a conveyor seat 100, a dosing assembly 200, and a forming frame assembly 300. A control box 110 and a wire feeding unit 120 are fixedly mounted on the surface of the conveyor seat 100. The dosing assembly 200 is fixedly mounted on one side of the control box 110, and the forming frame assembly 300 is fixed to the surface of the conveyor seat 100 and located directly below the dosing assembly 200. The dosing assembly 200 includes a hopper 210, a motor 220, and a stirring shaft 230 rotatably mounted inside the hopper 210. The motor 220 is used to drive the stirring shaft 230 to rotate. The bottom end of the stirring shaft 230 is fixedly connected to a shaft blade 231, the bottom end of the hopper 210 is fixedly connected to a guide hopper 211, and a material sensor 240 is fixedly installed on the inner side of the guide hopper 211; the forming frame assembly 300 is used to guide the steel strip into a U-shaped cross-section and a tubular shape during the drawing process of the welding wire.

[0031] In this embodiment, the conveyor base 100 is a robust platform structure, on which the control box 110 and the wire feeding unit 120 are mounted. The dosing assembly 200 is bolted to the side of the control box 110 and installed perpendicular to the platform. The forming frame assembly 300 is installed below the feeding path of the platform, directly opposite the bottom of the dosing assembly 200, to receive the powder falling from the hopper 210 and the steel belt passing through the forming guide.

[0032] The medicine hopper 210 is a conical container with a stirring shaft 230 mounted on its axis. A motor 220 is installed on the top of the medicine hopper and drives the stirring shaft 230 to rotate via bearings. The bottom end of the stirring shaft 230 is connected to a spiral ribbon-type blade 231, which can push the medicine powder from the center outward to promote uniform feeding.

[0033] The guide hopper 211 is located at the bottom center of the medicine hopper 210, and a material sensor 240 is installed inside it to detect the flow rate of the medicine powder in real time. The falling medicine powder naturally enters the guiding path of the forming frame assembly 300 through the guide hopper.

[0034] The forming frame assembly 300 includes a guide mold device. This guide mold sequentially guides the fed steel strip first into the straight guide section, then through the U-guide section to bend it into a U-shape, and finally through the sleeve section to press it into a tubular structure for encapsulating pharmaceutical powder. The output end of the material sensor 240 is electrically connected to the input end of the control box 110. The control box 110 is used to control the start-up, shutdown, and speed control of the wire feeding assembly 120 based on the feedback signal from the material sensor 240.

[0035] In this embodiment, the control chassis 110 is a programmable logic controller (PLC) with multiple input / output interfaces. The real-time material feeding rate signal collected by the material sensor 240 is transmitted to the control chassis 110 through the analog input port. The internal computing module of the control chassis 110 analyzes the rate information in real time and outputs control commands to the drive motor and wire feeding unit 120 to adjust the drive speed or achieve start / stop control. If the material feeding rate is detected to be lower than the set lower limit, the control chassis 110 reduces the wire feeding speed or stops wire feeding; if the rate is higher than the upper limit, the control chassis 110 accelerates the wire feeding to ensure that the powder and steel strip are synchronously matched.

[0036] In this embodiment, the forming frame assembly 300 includes a fixed base 310 and a guide mold 320. The fixed base 310 is fixed to both ends of the guide mold 320 and is used to fix the guide mold 320. The guide mold 320 is three-sectioned and includes a straight guide section, a U-shaped guide section and a sleeve section, which are used to guide the steel strip, guide the steel strip into a U-shaped cross-section shape and a tubular shape, respectively.

[0037] In this embodiment, the fixed base 310 is a frame-type mounting plate, fixed to the platform of the conveyor base 100 and fixing both ends of the guide mold 320. The guide mold 320 has a three-section changing structure: the outlet is a straight guide section, which keeps the steel strip in its original straight state; the middle section is a U-shaped guide section, which is used to press the steel strip from the plane into a U-shaped cross section; and the last section is a sleeve section, whose arc-shaped cross-section size is slightly smaller than the final tube diameter, which is used to tightly close the U-shaped steel strip into a closed tube, thereby forming the outer shell of the flux-cored welding wire.

[0038] In this embodiment, the wire feeding unit 120 includes a drive motor and a feeding roller group for driving the welding wire. The feeding roller group includes several rotating rollers located on the upper and lower sides of the welding wire for pulling the welding wire under the drive of the drive motor.

[0039] In this embodiment, the wire feeding unit 120 is equipped with a precision motor that drives several pairs of feeding rollers to rotate via a base. Each feeding roller has multiple pairs of opposing rollers distributed on the upper and lower sides of the welding wire, clamping the steel strip tightly by adjusting the gap between the rollers. When the drive motor rotates, the feeding rollers synchronously pull the steel strip forward along the conveyor seat 100. The feeding speed is controlled by the control box 110, which can precisely adjust the feeding rate based on feedback signals from the material sensor.

[0040] In this embodiment, the control chassis 110 is a PLC controller or a microcontroller, and the material sensor 240 is an infrared material sensor or an ultrasonic material sensor, used to sense the speed of falling material.

[0041] In this embodiment, the control chassis 110 adopts an industrial-grade PLC controller solution, which contains modules such as analog / digital input terminals, logic processing units, and safety output terminals, and is suitable for continuous high-speed powder feeding process control. The material sensor 240 can use infrared light to detect the material reflection intensity or ultrasonic time delay measurement to detect the material falling speed. Both solutions are automatically controlled by hardware connection to the PLC to achieve stable feeding and automatic speed adjustment functions.

[0042] In this embodiment, the medicine hopper 210 is conical in shape, and the stirring shaft 230 is rotatably mounted on the axis of the medicine hopper 210. The surface of the stirring shaft 230 is provided with a paddle that slides against the inner wall of the medicine hopper 210.

[0043] In this embodiment, the inner wall of the medicine hopper 210 is a smooth metal conical structure with the apex facing down and the bottom facing up. The capacity is designed according to the amount of medicine powder. The stirring shaft 230 is mounted on the central axis of the medicine hopper 210 via bearings. Its surface is provided with several coaxial paddles. These paddles are in close sliding contact with the inner wall of the medicine hopper. Through friction with the inner wall and the geometric design of the paddles, the medicine powder is uniformly conveyed along the conical wall to the bottom, and the accumulation or stratification of medicine powder is effectively prevented.

[0044] In this embodiment, the shaft blade 231 is a spiral ribbon stirring shaft blade structure, used for material feeding and conveying during rotation.

[0045] In this embodiment, the axial blade 231 has a spiral ribbon structure, with its shape resembling a spiral blade wound together. The blade width and spacing are designed according to the optimal feeding rate. When the stirring shaft 230 rotates, the axial blade 231 spirally pushes the powder from the center to the center outlet of the guide hopper 211. During rotation, the spiral structure promotes continuous and uniform falling of the powder, reducing stagnation and blockage, and creating a smooth material flow.

[0046] Working principle and usage process of this utility model: Steel strip forming and conveying: The steel strip is pulled forward by the wire feeding unit 120 on the conveyor seat 100; the guide mold 320 in the forming frame group 300 is divided into a straight guide section, a U-shaped guide section and a sleeve section, which sequentially guide the steel strip from a straight state to a U-shaped cross section, and finally roll it into a tube shape to form the outer shell of the flux-cored welding wire.

[0047] Powder feeding and mixing: The powder is contained in the hopper 210, and the motor 220 drives the stirring shaft 230 and the bottom swivel blade 231 to rotate; the stirring shaft 230 drives the powder to fall evenly, avoiding blockage or deviation; the spiral swivel blade 231 plays a role in directional feeding and preventing powder accumulation during rotation.

[0048] Material feeding monitoring and automatic control: The material sensor 240 in the feed hopper 211 monitors the falling speed and flow rate of the powder in real time; the sensor signal is transmitted to the control box 110, and the control box 110 realizes the start and stop and speed control of the wire feeding unit 120 according to the detection signal; when the powder feeding is insufficient, the wire feeding speed is automatically slowed down or stopped to prevent leakage caused by insufficient welding wire powder or the outer shell not being closed.

[0049] The anti-spillage mechanism is achieved by automatically matching the powder feeding speed with the steel belt conveying speed to ensure uniform powder filling; the forming frame group 300 completes the timely closure of the steel belt into a tube to reduce powder leakage; thus achieving continuous, stable, and spill-free powder filling in the production of flux-cored welding wire.

[0050] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A spill-proof flux-cored welding wire powder feeding mechanism, characterized in that, include: The system comprises a conveyor base (100), a dosing assembly (200), and a forming frame assembly (300). A control housing (110) and a wire feeder (120) are fixedly mounted on the surface of the conveyor base (100). The dosing assembly (200) is fixedly mounted on one side of the control housing (110), and the forming frame assembly (300) is fixed to the surface of the conveyor base (100) and located directly below the dosing assembly (200). The dosing assembly (200) includes a hopper (210), a motor (220), and... A stirring shaft (230) is rotatably installed inside the medicine hopper (210), and a motor (220) is used to drive the stirring shaft (230) to rotate; a shaft blade (231) is fixedly connected to the bottom end of the stirring shaft (230), and a guide hopper (211) is fixedly connected to the bottom end of the medicine hopper (210), and a material sensor (240) is fixedly installed inside the guide hopper (211); the forming frame assembly (300) is used to guide the steel strip into a U-shaped cross-section and a tubular shape during the wire drawing process.

2. The anti-spillage flux-cored welding wire powder feeding mechanism according to claim 1, characterized in that, The output end of the material sensor (240) is electrically connected to the input end of the control box (110). The control box (110) is used to control the start-up and stop of the wire feeding unit (120) and speed control according to the feedback signal of the material sensor (240).

3. The anti-spillage flux-cored welding wire powder feeding mechanism according to claim 1, characterized in that, The forming frame assembly (300) includes a fixed base (310) and a guide mold (320). The fixed base (310) is fixed to both ends of the guide mold (320) and is used to fix the guide mold (320). The guide mold (320) is three-sectioned and includes a straight guide section, a U-shaped guide section and a sleeve section, which are used to guide the steel strip, guide the steel strip into a U-shaped cross-section shape and a tubular shape, respectively.

4. The anti-spillage flux-cored welding wire powder feeding mechanism according to claim 1, characterized in that, The wire feeding unit (120) includes a drive motor and a feeding roller group for driving the welding wire. The feeding roller group includes several rotating rollers located on the upper and lower sides of the welding wire for pulling the welding wire under the drive of the drive motor.

5. The anti-spillage flux-cored welding wire powder feeding mechanism according to claim 1, characterized in that, The control box (110) is a PLC controller or a single-chip microcomputer structure, and the material sensor (240) is an infrared light material sensor or an ultrasonic material sensor, used to sense the speed of falling material.

6. The anti-spillage flux-cored welding wire powder feeding mechanism according to claim 1, characterized in that, The medicine hopper (210) is conical in shape, and the stirring shaft (230) is rotatably mounted on the axis of the medicine hopper (210). The surface of the stirring shaft (230) is provided with a paddle that slides against the inner wall of the medicine hopper (210).

7. The anti-spillage flux-cored welding wire powder feeding mechanism according to claim 1, characterized in that, The axial blade (231) is a spiral ribbon stirring axial blade structure, used for material feeding and conveying during rotation.

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