Extrusion device for magnesium alloy welding wire
By introducing a movable block chute structure and a low-pressure pipe cooling system into the magnesium alloy welding wire extrusion device, the problems of high-temperature oxidation and heat loss of the welding wire were solved, and the safe and stable discharge and quality maintenance of the welding wire were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU MINGMEI MAGNESIUM TECH CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-19
AI Technical Summary
Existing magnesium alloy welding wires are prone to severe oxidation or combustion at high temperatures when discharged from the extrusion cylinder, and heat loss and foreign matter entering the device affect the quality of the welding wires.
An extrusion device for magnesium alloy welding wire was designed, comprising a fixed frame, an extrusion cylinder, a feeding mechanism, a cooling mechanism, and a cooling system. The device prevents foreign objects from entering through a movable block chute structure, reduces oxygen contact through a low-pressure pipe, and lowers the temperature of the welding wire through a cooling pipe, ensuring that the welding wire is discharged in a vertical position.
It effectively prevents oxidation and combustion of the welding wire during discharge, reduces heat loss, maintains the quality of the welding wire, and prevents bending deformation.
Smart Images
Figure CN224372434U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magnesium alloy welding wire production technology, specifically to an extrusion device for magnesium alloy welding wire. Background Technology
[0002] Magnesium alloy welding wire is a type of welding wire used in various forged and cast magnesium alloys. It is widely used in the welding of optical instruments, aerospace, automotive parts, and civilian magnesium products and handicrafts. In the production and processing of magnesium alloy welding wire, extrusion molding is often used. This means applying pressure to one end of the ingot placed in the extrusion cylinder, so that the ingot exerts a force on the molten magnesium alloy welding wire raw material, causing it to pass through the die hole at the outlet of the extrusion cylinder to achieve plastic deformation.
[0003] The existing Chinese utility model patent with publication number CN220804983U discloses an extrusion device for magnesium alloy welding wire, including an extrusion cylinder and a stirring mechanism. The extrusion cylinder has an extrusion die at its right end, a groove on its inner arc surface, and a heat-conducting plate between the left and right inner walls of the groove. The inner wall of the heat-conducting plate is located on the same arc surface as the inner wall of the extrusion cylinder. Heating rings are respectively provided on the outer arc surface of the heat-conducting plate. An extrusion plate is laterally slidably connected inside the extrusion cylinder, and a screw is rotatably connected to the left end of the extrusion plate. The screw is threadedly connected to the threaded hole of the extrusion cylinder. A microcontroller is located at the front end of the extrusion cylinder. This magnesium alloy welding wire extrusion device, through the stirring component within the extrusion device, causes the magnesium alloy welding wire material to circulate internally and externally, ensuring uniform contact between the material and the heating component. This results in more uniform heating of the magnesium alloy welding wire material and improves the extrusion quality.
[0004] The extrusion cylinder of the aforementioned extrusion device is in a horizontal state, and the welding wire is discharged from one end of the extrusion cylinder. Since the welding wire is at a high temperature when discharged, it is still in a deformable state, which may cause the welding wire to bend under its own gravity after being discharged from the extrusion cylinder. At the same time, magnesium at high temperature is flammable and may be violently oxidized or even burned after being discharged from the extrusion cylinder due to high temperature and contact with oxygen. Furthermore, the material is transported through the pipe structure above the extrusion cylinder in the aforementioned extrusion device. The open structure will cause heat loss and affect the heating efficiency. Moreover, when the pressure mechanism is located on the side of the open structure, foreign objects may enter the rear side of the pressure mechanism and affect the reset of the pressure mechanism. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides an extrusion device for magnesium alloy welding wire, which solves the problems of severe oxidation, even combustion and deformation of the welding wire at high temperatures when it is discharged from the extrusion cylinder, as well as heat loss and foreign matter entering the device through the feed inlet.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a magnesium alloy welding wire extrusion device includes a fixed frame, and an extrusion cylinder is fixedly installed inside the fixed frame. The device is characterized in that: a feeding mechanism for adding raw materials is installed on the front side of the extrusion cylinder, and a cooling mechanism for reducing the temperature of the welding wire and preventing the welding wire from spontaneously combusting is installed at the bottom of the extrusion cylinder.
[0007] The feeding mechanism includes a movable block movably mounted on the front side of the extrusion cylinder, a material trough is provided inside the movable block, a hopper is fixedly mounted on the top of the movable block, and a transmission piston is fixedly mounted on the front side of the movable block;
[0008] The cooling mechanism includes a low-pressure pipe fixedly installed at the bottom of the extrusion cylinder, an exhaust pipe inserted through the rear side of the low-pressure pipe, an air pump fixedly installed at the bottom end of the exhaust pipe, a limit plate fixedly installed inside the low-pressure pipe, a guide wheel inserted through one side of the limit plate, a cooling pipe fixedly installed at the bottom end of the extrusion cylinder, a circulation pipe installed inside the cooling pipe, and a circulation pump fixedly installed at one end of the circulation pipe.
[0009] Preferably, the lower part of the extrusion cylinder has a conical structure and two vertical cylindrical openings at the bottom end, and the front side of the extrusion cylinder has a sliding groove structure that fits into the movable block.
[0010] Preferably, a pressing piston is fixedly installed at the top of the fixing frame, a pressing block is fixedly installed at the bottom of the pressing piston, and heating wires are installed on the outer side of the cylindrical part of the extrusion cylinder and the outer side of the bottom conical structure. The pressing block and the extrusion cylinder are connected in a sliding manner.
[0011] Preferably, the movable block and the extrusion cylinder are slidably connected, the rear end curvature of the movable block is consistent with the curvature of the inner wall of the extrusion cylinder, the movable block is fixedly connected to the movable end of the transmission piston, and the fixed end of the transmission piston is fixedly connected to the fixed frame.
[0012] Preferably, the air pump is connected to the low-pressure pipe cavity through the exhaust pipe, the guide wheels are symmetrically installed on both sides of the limiting plate, and the guide wheels and the limiting plate form a rotatable connection. There are a total of four sets of guide wheels and the two limiting plates.
[0013] Preferably, the top end of the cooling pipe is fixedly connected to the bottom end of the extrusion cylinder and communicates with the opening structure at the bottom end of the extrusion cylinder. The portion of the circulation pipe located inside the closed cooling pipe is spiral-shaped, and the bottom end of the circulation pipe is connected to the output end of the circulation pump. Beneficial effects
[0014] This invention provides an extrusion device for magnesium alloy welding wire. Compared with the prior art, it has the following advantages:
[0015] (1) The extrusion device of the magnesium alloy welding wire, through the setting of the movable block, because the sliding structure of the extrusion cylinder is fitted with the movable block, and the movable block can slide inside the sliding structure of the extrusion cylinder under the drive of the transmission piston, when the inner end of the movable block is flush with the inner wall of the extrusion cylinder, the bottom end of the material trough is located inside the sliding structure of the extrusion cylinder, and the material cannot enter the inner cavity of the extrusion cylinder through the material trough. When the material is fed, the movable block is moved to the inside of the extrusion cylinder by the transmission piston, so that the bottom end of the material trough is located inside the extrusion cylinder and the top end is located outside the extrusion cylinder. At this time, the material inside the hopper can enter the extrusion cylinder through the material trough. This method can close the part of the extrusion cylinder located below the lower pressure block after the material is added, thereby blocking foreign objects and reducing heat loss.
[0016] (2) The extrusion device of the magnesium alloy welding wire is equipped with a cooling pipe. The cooling pipe is fixed below the opening structure at the bottom of the extrusion cylinder. After the welding wire is extruded, it will directly enter the cooling pipe. Water for cooling is delivered to the cooling pipe by the circulation pump to reduce the temperature of the welding wire. At the same time, the guide wheel restricts the welding wire from aligning with the opening at the bottom of the low-pressure pipe after extrusion. The bottom of the low-pressure pipe is provided with an opening that matches the position of the opening at the bottom of the extrusion cylinder. The air inside the low-pressure pipe is extracted by the air pump. When the welding wire passes through the opening at the bottom of the low-pressure pipe, the external air can only enter the low-pressure pipe through the gap between the welding wire and the low-pressure pipe. Since the air intake is less than the air extraction volume of the air pump, the inside of the low-pressure pipe will be in a low-pressure state, which will reduce the oxygen content inside the low-pressure pipe. This will reduce the oxygen content while reducing the temperature of the welding wire and prevent the welding wire from spontaneously combusting. The vertically installed extrusion cylinder will keep the welding wire in a vertical state after it is discharged from the extrusion cylinder to prevent the welding wire from bending and deforming. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the mounting structure of the lower pressure block of this utility model;
[0019] Figure 3 This is a schematic diagram of the exhaust pipe installation structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the cooling pipe installation structure of this utility model;
[0021] In the diagram: 1. Fixed frame; 11. Extrusion cylinder; 12. Pressing piston; 13. Pressing block; 14. Heating wire; 2. Feeding mechanism; 21. Movable block; 22. Material trough; 23. Hopper; 24. Transmission piston; 3. Cooling mechanism; 31. Low-pressure pipe; 32. Exhaust pipe; 33. Air pump; 34. Limiting plate; 35. Guide wheel; 36. Cooling pipe; 37. Circulation pipe; 38. Circulation pump. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 This utility model provides a technical solution: a magnesium alloy welding wire extrusion device, including a fixed frame 1, an extrusion cylinder 11 fixedly installed inside the fixed frame 1, the lower part of the extrusion cylinder 11 is a conical structure, and the bottom end is provided with two vertical cylindrical openings, the front side of the extrusion cylinder 11 is provided with a side sliding groove structure that fits into the movable block 21, the top of the fixed frame 1 is fixedly installed with a pressing piston 12, the bottom end of the pressing piston 12 is fixedly installed with a pressing block 13, and heating wires 14 are installed on the outer side of the cylindrical part of the extrusion cylinder 11 and the outer side of the bottom conical structure. The pressing block 13 and the extrusion cylinder 11 form a sliding connection.
[0024] Specifically, the fixed frame 1 can restrict the position of the extrusion cylinder 11. The extrusion cylinder 11 can restrict the material to be discharged in a cylindrical shape from the bottom opening structure when it is squeezed by the lower pressure block 13 after melting. The top end of the lower pressure piston 12 is fixedly connected to the top end of the fixed frame 1. The lower pressure piston 12 drives the lower pressure block 13 to move downward, squeezing the material melted by the heating wire 14.
[0025] A feeding mechanism 2 for adding raw materials is installed on the front side of the extrusion cylinder 11. The feeding mechanism 2 includes a movable block 21 movably installed on the front side of the extrusion cylinder 11. A material trough 22 is provided inside the movable block 21. A hopper 23 is fixedly installed on the top of the movable block 21. A transmission piston 24 is fixedly installed on the front side of the movable block 21. The movable block 21 and the extrusion cylinder 11 are slidably connected. The arc of the rear end of the movable block 21 is consistent with the arc of the inner wall of the extrusion cylinder 11. The movable block 21 is fixedly connected to the movable end of the transmission piston 24. The fixed end of the transmission piston 24 is fixedly connected to the fixed frame 1.
[0026] Specifically, the movable block 21 facilitates the entry of material into the extrusion cylinder 11 through the material trough 22. Since the sliding groove structure of the extrusion cylinder 11 is fitted with the movable block 21, and the movable block 21 can slide inside the sliding groove structure of the extrusion cylinder 11 under the drive of the transmission piston 24, when the inner end of the movable block 21 is flush with the inner wall of the extrusion cylinder 11, the bottom end of the material trough 22 is located inside the sliding groove structure of the extrusion cylinder 11, and the material cannot enter the inner cavity of the extrusion cylinder 11 through the material trough 22. When the material is discharged, the transmission piston 24 drives the movable block 21 to move into the extrusion cylinder 11, so that the bottom end of the material trough 22 is located inside the extrusion cylinder 11 and the top end is located outside the extrusion cylinder 11. At this time, the material inside the hopper 23 can enter the extrusion cylinder 11 through the material trough 22.
[0027] A cooling mechanism 3 is installed at the bottom of the extrusion cylinder 11 to reduce the temperature of the welding wire and prevent it from spontaneously combusting. The cooling mechanism 3 includes a low-pressure pipe 31 fixedly installed at the bottom of the extrusion cylinder 11, an exhaust pipe 32 inserted through the rear side of the low-pressure pipe 31, an air pump 33 fixedly installed at the bottom end of the exhaust pipe 32, a limit plate 34 fixedly installed inside the low-pressure pipe 31, a guide wheel 35 inserted through one side of the limit plate 34, a cooling pipe 36 fixedly installed at the bottom end of the extrusion cylinder 11, a circulation pipe 37 installed inside the cooling pipe 36, and one end of the circulation pipe 37... A circulation pump 38 is fixedly installed. An air pump 33 is connected to the cavity of a low-pressure pipe 31 through an exhaust pipe 32. Guide wheels 35 are symmetrically installed on both sides of a limiting plate 34, and the guide wheels 35 and the limiting plate 34 form a rotatable connection. There are four sets of guide wheels 35 and the two limiting plates 34. The top end of a cooling pipe 36 is fixedly connected to the bottom end of an extrusion cylinder 11 and is connected to the opening structure at the bottom end of the extrusion cylinder 11. The part of a circulation pipe 37 located inside the closed cooling pipe 36 is spiral-shaped, and the bottom end of the circulation pipe 37 is connected to the output end of a circulation pump 38.
[0028] Specifically, the bottom end of the low-pressure pipe 31 is provided with an opening that matches the position of the opening at the bottom end of the extrusion cylinder 11. The air inside the low-pressure pipe 31 is extracted by the air pump 33. When the welding wire passes through the opening at the bottom end of the low-pressure pipe 31, the external air can only enter the interior of the low-pressure pipe 31 through the gap between the welding wire and the low-pressure pipe 31. Since the air intake is less than the extraction volume of the air pump 33, the interior of the low-pressure pipe 31 will be in a low-pressure state, which will reduce the oxygen content inside the low-pressure pipe 31. The limiting plate 34 can limit the position of the guide wheel 35. The guide wheel 35 can limit the welding wire to be aligned with the opening at the bottom end of the low-pressure pipe 31 after it is extended, and limit the welding wire to remain vertical. The cooling pipe 36 can facilitate the cooling of the welding wire. The circulation pipe 37 can facilitate the even distribution of cooling water inside the cooling pipe 36. At the same time, the contents not described in detail in this specification are all prior art known to those skilled in the art.
[0029] During operation, the sliding groove structure of the extrusion cylinder 11 is fitted with the movable block 21, and the movable block 21 can slide inside the sliding groove structure of the extrusion cylinder 11 under the drive of the transmission piston 24. When the inner end of the movable block 21 is flush with the inner wall of the extrusion cylinder 11, the bottom end of the material trough 22 is located inside the sliding groove structure of the extrusion cylinder 11, and the material cannot enter the inner cavity of the extrusion cylinder 11 through the material trough 22. During the feeding operation, the transmission piston 24 drives the movable block 21 to move into the extrusion cylinder 11, so that the bottom end of the material trough 22 is located inside the extrusion cylinder 11 and the top end is located outside the extrusion cylinder 11. At this time, the material inside the hopper 23 can enter the extrusion cylinder 11 through the material trough 22. This method can seal the part of the extrusion cylinder 11 located below the lower pressure block 13 after the material is added, thereby blocking foreign objects and reducing heat loss. The cooling pipe 36 is fixed below the opening structure at the bottom end of the extrusion cylinder 11. After the welding wire is extruded, it will directly enter the cooling pipe 36. Inside the 6th section, a circulating pump 38 supplies cooling water to the circulating pipe 37 to reduce the temperature of the welding wire. The cooling water enters from the lower end of the circulating pipe 37 and exits from the top end. Simultaneously, a guide wheel 35 restricts the welding wire from aligning with the opening at the bottom of the low-pressure pipe 31 after extrusion. The bottom end of the low-pressure pipe 31 has an opening that matches the position of the opening at the bottom end of the extrusion cylinder 11. An air pump 33 extracts air from inside the low-pressure pipe 31. When the welding wire passes through the opening at the bottom end of the low-pressure pipe 31, external air can only enter the low-pressure pipe 31 through the gap between the welding wire and the low-pressure pipe 31. Since the air intake is less than the air extraction volume of the air pump 33, the inside of the low-pressure pipe 31 will be in a low-pressure state, reducing the oxygen content inside the low-pressure pipe 31. This reduces the oxygen content while lowering the temperature of the welding wire, preventing spontaneous combustion of the welding wire. Through the vertically installed extrusion cylinder 11, the welding wire will remain vertical after exiting the extrusion cylinder 11 to prevent bending deformation of the welding wire.
[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.
Claims
1. A magnesium alloy welding wire extrusion device, comprising a fixing frame (1), wherein an extrusion cylinder (11) is fixedly installed inside the fixing frame (1), characterized in that: The front side of the extrusion cylinder (11) is equipped with a feeding mechanism (2) for adding raw materials, and the bottom of the extrusion cylinder (11) is equipped with a cooling mechanism (3) for reducing the temperature of the welding wire and preventing the welding wire from spontaneously combusting. The feeding mechanism (2) includes a movable block (21) movably installed on the front side of the extrusion cylinder (11), a material trough (22) is provided inside the movable block (21), a hopper (23) is fixedly installed above the movable block (21), and a transmission piston (24) is fixedly installed on the front side of the movable block (21). The cooling mechanism (3) includes a low-pressure pipe (31) fixedly installed at the bottom of the extrusion cylinder (11), an exhaust pipe (32) inserted through the rear side of the low-pressure pipe (31), an air pump (33) fixedly installed at the bottom end of the exhaust pipe (32), a limit plate (34) fixedly installed inside the low-pressure pipe (31), a guide wheel (35) inserted through one side of the limit plate (34), a cooling pipe (36) fixedly installed at the bottom end of the extrusion cylinder (11), a circulation pipe (37) installed inside the cooling pipe (36), and a circulation pump (38) fixedly installed at one end of the circulation pipe (37).
2. The extrusion device for magnesium alloy welding wire according to claim 1, characterized in that: The extrusion cylinder (11) has a conical structure at the bottom and two vertical cylindrical openings at the bottom. The front side of the extrusion cylinder (11) is provided with a sliding groove structure that fits into the movable block (21).
3. The extrusion device for magnesium alloy welding wire according to claim 1, characterized in that: A pressing piston (12) is fixedly installed at the top of the fixed frame (1), and a pressing block (13) is fixedly installed at the bottom of the pressing piston (12). A heating wire (14) is installed on the outer side of the cylindrical part and the outer side of the bottom conical structure of the extrusion cylinder (11). The pressing block (13) and the extrusion cylinder (11) are connected in a sliding manner.
4. The extrusion device for magnesium alloy welding wire according to claim 1, characterized in that: The movable block (21) and the extrusion cylinder (11) are connected in a sliding connection. The arc of the rear end of the movable block (21) is consistent with the arc of the inner wall of the extrusion cylinder (11). The movable block (21) is fixedly connected to the movable end of the transmission piston (24). The fixed end of the transmission piston (24) is fixedly connected to the fixed frame (1).
5. The extrusion device for magnesium alloy welding wire according to claim 1, characterized in that: The air pump (33) is connected to the low-pressure pipe (31) through the exhaust pipe (32). The guide wheel (35) is symmetrically installed on both sides of the limiting plate (34), and the guide wheel (35) and the limiting plate (34) form a rotating connection. There are four sets of guide wheels (35) and the two limiting plates (34) on both sides.
6. The extrusion device for magnesium alloy welding wire according to claim 1, characterized in that: The top end of the cooling pipe (36) is fixedly connected to the bottom end of the extrusion cylinder (11) and communicates with the opening structure at the bottom end of the extrusion cylinder (11). The part of the circulation pipe (37) located inside the closed cooling pipe (36) is spiral-shaped, and the bottom end of the circulation pipe (37) is connected to the output end of the circulation pump (38).