Feeding and cutting device for metal wires

Abstract

The invention provides a metal wire feeding and cutting device, and relates to the field of metal wire machining. The metal wire feeding and cutting device comprises feeding mechanisms for driving metal wires to move and a heating mechanism for heating the metal wires, the feeding mechanisms are arranged at the inlet end, the interior and the outlet end of the heating mechanism respectively, the heating mechanism comprises a supporting part and a heating end for heating the metal wires, and the heating temperature of the heating end is adjustable. And the cutting mechanism is used for breaking the heated metal wires through external force. According to the feeding and cutting-off device for the metal wires, the moving metal wires are heated and tempered through the heating mechanism, so that elastic deformation of the metal wires is reduced in the bending process, meanwhile, the positions, needing to be cut, of the metal wires can be locally heated to be molten, then the metal wires are cut off, and through the arrangement, the technological process can be optimized; therefore, the metal wire meeting the standard can be processed more conveniently.

Description

Technical Field

[0001] This invention relates to the field of metal wire processing, specifically to a metal wire feeding and cutting device. Background Technology

[0002] Metal wire mesh is a raw material for producing metal vibration isolation pads, metal shock absorbers, and metal defoaming fillers. When producing metal vibration isolation pads and other devices, multiple layers of metal wire mesh need to be stacked. The stacked metal wire mesh is then placed in a mold, and the mold is used to squeeze the metal wire mesh to deform it, reducing the gap between adjacent metal wires and finally forming the final shape.

[0003] In the production of metal wire mesh, the metal wires need to be bent and shaped. For example, in the existing patent CN119927105A, a method for forming metal wire mesh, both the weft and warp wires need to be bent multiple times. Traditional metal wires are elastic and will undergo elastic deformation during the bending process. Therefore, annealing is required during the processing. At the same time, the weft wires are cut to a fixed length and then extruded through a mold during the processing. Therefore, some of the metal wires also need to be cut to a fixed length.

[0004] Existing patent CN202671610U describes a metal wire annealing furnace, including a furnace body. The furnace chamber is filled with insulating material, and grooves are formed on the outer wall of the chamber. Heating wires are placed within these grooves and connected to a power supply and an electronic control device. A cavity is arranged horizontally in parallel in the center of the furnace chamber, and a metal wire tube is placed within each cavity. The metal wire tubes in this annealing furnace are positioned within the cavities in the center of the furnace chamber, preventing deformation and ensuring uniform heating of the metal wires, thus effectively improving heating efficiency. However, this technical solution requires the metal wires to be placed as a whole in the annealing furnace for processing, followed by equal-length cutting, resulting in discontinuous wire processing. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a metal wire feeding and cutting device, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a feeding and cutting device for metal wire, comprising a feeding mechanism for driving the metal wire to move and a heating mechanism for heating the metal wire. The feeding mechanism is respectively disposed at the inlet end, the interior, and the outlet end of the heating mechanism. The heating mechanism includes a support part and a heating end for heating the metal wire. The heating temperature of the heating end is adjustable. The device also includes a cutting mechanism for breaking the heated metal wire by external force. The feeding mechanism includes multiple sets of symmetrically arranged rollers. The metal wire is disposed between two symmetrical rollers. The rollers move forward by rotating and squeezing the metal wire. A central shaft is disposed at the center of the rollers. A power transmission mechanism for driving the central shaft to rotate is disposed at the end of the central shaft away from the rollers.

[0007] Preferably, the heating end includes a flame ring, which includes a gas supply pipe and a combustion-supporting agent supply pipe. The gas and combustion-supporting agent are mixed and then ejected from the flame hole, which is located in the inner ring of the flame ring. A metal wire passes through the flame ring.

[0008] Preferably, the heating end includes an electric heating ring, through which a metal wire passes and is heated.

[0009] Preferably, the heating end includes an electromagnetic wave heater, which is arranged parallel to the metal wire and irradiates the metal wire.

[0010] Preferably, the heating mechanism and the feeding mechanism are arranged in a bent configuration within the space, and a reversing wheel for reversing the direction of the metal wire is provided at the bend. After passing the final reversing wheel, the metal wire needs to be straightened by a straightening roller. The cutting mechanism is located after the metal wire is straightened, and the feeding mechanism is located at least on both the front and rear sides of the cutting mechanism.

[0011] Preferably, the cutting mechanism includes a semi-annular jet ring with an opening at the bottom end. A high-speed jet hole pointing towards the center is provided above the inner ring of the semi-annular jet ring, and the high-speed jet hole ejects non-oxidizing gas outward.

[0012] Preferably, the cutting mechanism consists of two adjustable feeding mechanisms located on both sides of the heating end. The feeding mechanism located in front of the heating end has a lower speed than the feeding mechanism located behind the heating end, and the metal wire heated to the point of melting is broken by the speed difference.

[0013] Preferably, the cutting mechanism includes a compression cutting section disposed between the heating end and the feeding mechanism.

[0014] Preferably, the feeding mechanism, heating mechanism, and cutting mechanism are disposed in an oxygen-isolated sealed cavity, and the oxygen-isolated sealed cavity is provided with a discharge gas pump for discharging gas.

[0015] Preferably, the rollers, straightening rollers, and reversing rollers are all made of ceramic material.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The feeding and cutting device for the metal wire heats and tempers the moving metal wire through a heating mechanism, which reduces elastic deformation of the metal wire during bending. At the same time, it can locally heat the metal wire to be cut, melt it, and then cut it. This setting can optimize the process flow, thereby making it easier to process metal wires that meet the standards.

[0017] 2. The feeding and cutting device for the metal wire includes a flame ring at the heating end. The flame ring comprises a gas supply pipe and a combustion-supporting agent supply pipe. The gas and combustion-supporting agent are mixed and ejected from the flame hole, which is located on the inner ring of the flame ring. The metal wire passes through the flame ring, and direct open flame heating ensures uniform heating of the metal wire. The cutting mechanism includes a semi-circular jet ring, which opens at its bottom. A high-speed jet hole pointing towards the center is located above the inner ring of the semi-circular jet ring. Gas is ejected through the high-speed jet hole to blow the metal wire off. This technical solution enables the structure to simultaneously perform heating and cutting.

[0018] 3. The feeding and cutting device for the metal wire consists of two adjustable feeding mechanisms located on both sides of the heating end. When cutting is required, the other heating end and feeding mechanism stop working, while the heating end between the two feeding mechanisms remains operational. When the wire is heated to a molten state, the feeding mechanism located behind the heating end operates, thereby moving the molten metal wire. Since the main body is not operating, there is a speed difference, which allows the heated metal wire to be broken. This technical solution reduces the amount of material used for breaking the wire.

[0019] 4. The feeding and cutting device for the metal wire, including the feeding mechanism, heating mechanism, and cutting mechanism, is located in an oxygen-isolated sealed cavity. The oxygen-isolated sealed cavity is equipped with a gas discharge pump. This arrangement can prevent the metal wire from oxidizing with oxygen in the air during processing, thereby maintaining the strength of the metal wire.

[0020] 5. The feeding and cutting device for the metal wire, the heating mechanism and the feeding mechanism are bent in space. A reversing wheel for reversing the direction of the metal wire is set at the bend. After the metal wire passes through the last reversing wheel, it needs to be straightened by a straightening roller. The cutting mechanism is set after the metal wire is straightened. The feeding mechanism is set at least on the front and rear sides of the cutting mechanism. This arrangement allows the metal wire to be distributed in space, thereby reducing the space occupied by the tempering device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2This is a schematic diagram of the oxygen-barrier sealing cavity connection of the present invention; Figure 3 This is a schematic diagram of the flame ring connection of the present invention; Figure 4 This is a schematic diagram of the semi-ring jet ring connection of the present invention; Figure 5 This is a schematic diagram of the feeding mechanism of the present invention; Figure 6 This is a schematic diagram of the straightening roller of the present invention; Figure 7 This is a schematic diagram of the connection of the extrusion and cutting part of the present invention; Figure 8 This is a schematic diagram of the connection of the electromagnetic wave heater of the present invention.

[0022] In the diagram: 1. Feeding mechanism; 2. Heating mechanism; 21. Support part; 22. Heating end; 3. Cutting mechanism; 101. Roller; 102. Central shaft; 103. Power transmission mechanism; 221. Flame ring; 222. Gas supply pipe; 223. Combustion aid supply pipe; 224. Electric heating ring; 225. Electromagnetic wave heater; 226. Flame hole; 4. Reversing wheel; 5. Straightening roller; 301. Semi-ring jet ring; 302. High-speed jet hole; 303. Extrusion cutting part; 6. Oxygen-free sealing cavity; 7. Exhaust air pump. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0027] like Figure 1-8 As shown: Example 1 includes a feeding mechanism 1 for driving the movement of a metal wire and a heating mechanism 2 for heating the metal wire. The feeding mechanism 1 is respectively located at the inlet end, the interior, and the outlet end of the heating mechanism 2. The heating mechanism 2 includes a support part 21 and a heating end 22 for heating the metal wire. The heating temperature of the heating end 22 is adjustable. The heating end 22 is used for annealing at a low temperature and for melting at a high temperature. It also includes a cutting mechanism 3 for breaking the heated metal wire by external force. The timing of cutting is determined by a length detection mechanism, thereby cutting the continuous metal wire into a specified length. The feeding mechanism 1 includes multiple sets of symmetrically arranged rollers 101. The metal wire is placed between two symmetrical rollers 101. The metal wire moves forward by rotating and extruding it. A central shaft 102 is set at the center of the roller 101. A power transmission mechanism 103 that drives the central shaft 102 to rotate is set at the end of the central shaft 102 away from the roller 101. Each power transmission mechanism 103 is set individually and adjusted uniformly. The metal wire is heated and tempered by the heating mechanism 2. The heating mechanism 2 forms a heating space. The metal wire moves within the heating space for a period of time to complete the annealing, which reduces elastic deformation of the metal wire during bending. At the same time, the metal wire to be cut can be locally heated to melt it before cutting. This setting can optimize the process flow, thereby making it easier to process metal wires that meet the standards.

[0028] The heating end 22 includes a flame ring 221, which includes a gas supply pipe 222 and an oxidizer supply pipe 223. After the gas and oxidizer are mixed, they are ejected from the flame hole 226. The flame ring 221 also has an ignition component for ignition. The flame hole 226 is located in the inner ring of the flame ring 221. The metal wire passes through the flame ring 221. By directly using an open flame for heating, the metal wire can be heated evenly.

[0029] The cutting mechanism 3 includes a semi-annular jet ring 301. In this embodiment, the semi-annular jet ring 301 is modified from the flame ring 221 to have both flame and jet functions. The semi-annular jet ring 301 is open at its bottom end. A high-speed jet hole 302 pointing towards the center is provided above the inner ring of the semi-annular jet ring 301. When the cutting position is encountered, the feeding mechanism 1 stops working, the other flame rings 221 stop flame, and the semi-annular jet ring 301 at that position is kept to flame and heat the metal wire. When it is heated to the melting state, the metal wire is blown off by jet through the high-speed jet hole 302. Then the resetting operation continues. The high-speed jet hole 302 sprays out non-oxidizing gas. In this embodiment, the gas sprayed out can be coal gas.

[0030] The feeding mechanism 1, heating mechanism 2, and cutting mechanism 3 are housed within an oxygen-isolated sealed cavity 6. Both the heating and cooling of the metal wire are located inside the oxygen-isolated sealed cavity 6. The oxygen-isolated sealed cavity 6 is equipped with a discharge gas pump 7. Since the metal wire oxidizes with oxygen in the air during processing, and the oxidized wire affects its strength, the heating portion of the metal wire is located within the oxygen-isolated sealed cavity 6. In this embodiment, the heating mechanism 2 uses an excess of fuel gas and a suitable amount of oxygen for combustion, thereby generating reducing gases such as hydrogen and carbon monoxide, which can inhibit workpiece oxidation. At this time, the local atmosphere formed by the flame itself has a protective effect, eliminating the need for additional inert gas introduction; only the generated hydrogen and carbon monoxide need to be discharged through the discharge gas pump 7.

[0031] The heating mechanism 2 and the feeding mechanism 1 are bent within the space, and a reversing wheel 4 for reversing the direction of the metal wire is provided at the bend. This arrangement allows the metal wire to be distributed within the space, thereby reducing the space occupied by the tempering device. After passing the final reversing wheel 4, the metal wire needs to be straightened by the straightening roller 5. Since the metal wire is bent after passing the reversing wheel 4, it is necessary to straighten the metal wire by setting the straightening roller 5. The cutting mechanism 3 is set after the metal wire is straightened. The feeding mechanism 1 is set at least on the front and rear sides of the cutting mechanism 3. The feeding mechanism 1 is set on the front side of the cutting mechanism 3, which can drive the uncut metal wire to move forward. The feeding mechanism 1 is also set on the rear side of the cutting mechanism 3, which can drive the cut metal wire to move. The roller 101, the straightening roller 5 and the reversing wheel 4 are all made of ceramic material. Since the roller 101, the straightening roller 5 and the reversing wheel 4 need to work in a high-temperature environment, ceramic material is used to avoid the metal wire being squeezed by thermal expansion and to increase durability.

[0032] Example 2 includes a feeding mechanism 1 for driving the movement of a metal wire and a heating mechanism 2 for heating the metal wire. The feeding mechanism 1 is respectively located at the inlet end, the interior, and the outlet end of the heating mechanism 2. The heating mechanism 2 includes a support part 21 and a heating end 22 for heating the metal wire. The heating temperature of the heating end 22 is adjustable. It also includes a cutting mechanism 3 for breaking the heated metal wire by external force. The feeding mechanism 1 includes multiple sets of symmetrically arranged rollers 101. The metal wire is arranged between two symmetrical rollers 101. The rollers 101 move forward by rotating and squeezing the metal wire. A central shaft 102 is arranged at the center of the rollers 101. A power transmission mechanism 103 for driving the central shaft 102 to rotate is arranged at the end of the central shaft 102 away from the rollers 101.

[0033] The heating end 22 includes an electric heating ring 224, which comes in two types: one is a resistance heating ring, which heats the metal wire through resistance heating; the other uses alternating current to generate an alternating magnetic field through an induction coil, causing eddy currents to form in the workpiece within the magnetic field, and the Joule heating of the eddy currents causes the workpiece to heat itself. Although the two heating methods are different, they achieve essentially the same effect.

[0034] The metal wire passes through the electric heating ring 224 and is heated. The cutting mechanism 3 includes a pressing and cutting section 303 disposed between the heating end 22 and the feeding mechanism 1. When the feeding mechanism 1 encounters a position that needs to be cut, the other electric heating rings 224 are de-energized, and the last electric heating ring 224 is kept heating. When the wire is heated to a melting state, the feeding mechanism 1 moves again. When the heated metal wire moves to the pressing and cutting section 303, the pressing and cutting section 303 works to cut the metal wire. The pressing and cutting section 303 includes a fixed part and a movable part, or two movable parts. The cutting of the metal wire is completed by the shearing force generated by the two parts approaching each other.

[0035] The feeding mechanism 1, heating mechanism 2, and cutting mechanism 3 are disposed within an oxygen-isolated sealed cavity 6. The oxygen-isolated sealed cavity 6 is equipped with a venting gas pump 7. In this embodiment, since the heating end 22 is an electrically heated part without an open flame, a protective gas such as nitrogen can be directly injected into the oxygen-isolated sealed cavity 6. In this case, the venting gas pump 7 needs to be replaced with a supply gas pump. The heating mechanism 2 and the feeding mechanism 1 are arranged in a bent configuration within the space. A reversing wheel 4 for reversing the metal wire is provided at the bend. After passing through the final reversing wheel 4, the metal wire needs to be straightened by a straightening roller 5. The cutting mechanism 3 is disposed after the metal wire is straightened. The feeding mechanism 1 is disposed at least on both the front and rear sides of the cutting mechanism 3. The roller 101, the straightening roller 5, and the reversing wheel 4 are all made of ceramic material.

[0036] Example 3: Based on the previous example, the cutting mechanism 3 includes a semi-annular jet ring 301 with an opening at the bottom. A high-speed jet hole 302 pointing towards the center is provided above the inner ring of the semi-annular jet ring 301. The high-speed jet hole 302 sprays out non-oxidizing gas. In this example, the gas sprayed out by the high-speed jet hole 302 is a protective gas.

[0037] Example 4 includes a feeding mechanism 1 for driving the movement of a metal wire and a heating mechanism 2 for heating the metal wire. The feeding mechanism 1 is respectively located at the inlet end, the interior, and the outlet end of the heating mechanism 2. The heating mechanism 2 includes a support part 21 and a heating end 22 for heating the metal wire. The heating temperature of the heating end 22 is adjustable. It also includes a cutting mechanism 3 for breaking the heated metal wire by external force. The feeding mechanism 1 includes multiple sets of symmetrically arranged rollers 101. The metal wire is arranged between two symmetrical rollers 101. The rollers 101 move forward by rotating and squeezing the metal wire. A central shaft 102 is arranged at the center of the rollers 101. A power transmission mechanism 103 for driving the central shaft 102 to rotate is arranged at the end of the central shaft 102 away from the rollers 101.

[0038] The heating end 22 includes an electromagnetic wave heater 225. There are two types of electromagnetic wave heaters 225: one uses an infrared radiator, such as a quartz tube or ceramic infrared heater, to emit infrared radiation that is absorbed by the workpiece and converted into heat energy. The other uses a high-energy laser beam focused on the workpiece surface to instantly heat a localized area to the annealing temperature. Both heating methods essentially involve the conversion of electromagnetic wave energy and both offer the advantage of precise heating. The electromagnetic wave heater 225 is positioned parallel to the metal wire and irradiates the metal wire. The cutting mechanism 3 consists of two adjustable feeding mechanisms 1 arranged on both sides of the heating end 22. When cutting is required, the other heating ends 22 and feeding mechanisms 1 stop working, while the heating end 22 between the two feeding mechanisms 1 remains working. When heated to the melting state, the feeding mechanism 1 located behind the heating end 22 works, thereby moving the molten metal wire. Since the main body is not working, there is a speed difference, which can break the heated metal wire. The speed of the feeding mechanism 1 located in front of the heating end 22 is less than the speed of the feeding mechanism 1 located behind the heating end 22. The speed difference breaks the molten metal wire.

[0039] The feeding mechanism 1, heating mechanism 2, and cutting mechanism 3 are disposed within an oxygen-free sealed cavity 6. The oxygen-free sealed cavity 6 is equipped with a venting gas pump 7. Since the heating end 22 in this embodiment uses an electromagnetic wave heater 225, gas flow affects focusing; therefore, the venting gas pump 7 only needs to operate to evacuate the oxygen-free sealed cavity 6 to a vacuum. The heating mechanism 2 and feeding mechanism 1 are bent within the space, and a reversing wheel 4 for reversing the metal wire is disposed at the bend. After passing the final reversing wheel 4, the metal wire needs to be straightened by a straightening roller 5. The cutting mechanism 3 is disposed after the metal wire is straightened, and the feeding mechanism 1 is disposed at least on both the front and rear sides of the cutting mechanism 3. The roller 101, straightening roller 5, and reversing wheel 4 are all made of ceramic material.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0041] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0042] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding and cutting device for metal wire, comprising a feeding mechanism (1) for driving the metal wire to move, and a heating mechanism (2) for heating the metal wire, characterized in that: The feeding mechanism (1) is respectively set at the inlet end, inside and outlet end of the heating mechanism (2). The heating mechanism (2) includes a support part (21) and a heating end (22) for heating the metal wire. The heating temperature of the heating end (22) is adjustable. It also includes a cutting mechanism (3) that breaks the heated metal wire by external force; The feeding mechanism (1) includes multiple sets of symmetrically arranged rollers (101). The metal wire is arranged between two symmetrical rollers (101). The rollers (101) move forward by rotating and squeezing the metal wire. A central shaft (102) is arranged at the center of the rollers (101). A power transmission mechanism (103) for driving the central shaft (102) to rotate is arranged at one end of the central shaft (102) away from the rollers (101).

2. The feeding and cutting device for metal wire according to claim 1, characterized in that: The heating end (22) includes a flame ring (221), which includes a gas supply pipe (222) and an oxidizer supply pipe (223). The gas and oxidizer are mixed and then ejected from the flame hole (226). The flame hole (226) is located in the inner ring of the flame ring (221), and a metal wire passes through the flame ring (221).

3. The feeding and cutting device for metal wire according to claim 1, characterized in that: The heating end (22) includes an electric heating ring (224) through which a metal wire passes and is heated.

4. The feeding and cutting device for metal wire according to claim 1, characterized in that: The heating end (22) includes an electromagnetic wave heater (225), which is arranged parallel to the metal wire and irradiates the metal wire.

5. A wire feeding and cutting device according to any one of claims 1-4, characterized in that: The heating mechanism (2) and the feeding mechanism (1) are bent in space. A reversing wheel (4) for reversing the direction of the metal wire is provided at the bend. After the metal wire passes through the last reversing wheel (4), it needs to be straightened by the straightening roller (5). The cutting mechanism (3) is set after the metal wire is straightened. The feeding mechanism (1) is set at least on the front and rear sides of the cutting mechanism (3).

6. The feeding and cutting device for metal wire according to claim 5, characterized in that: The cutting mechanism (3) includes a semi-annular jet ring (301), with an opening at the bottom end of the semi-annular jet ring (301). A high-speed jet hole (302) pointing towards the center is provided above the inner ring of the semi-annular jet ring (301), and the high-speed jet hole (302) sprays out non-oxidizing gas.

7. The feeding and cutting device for metal wire according to claim 5, characterized in that: The cutting mechanism (3) consists of two adjustable feeding mechanisms (1) located on both sides of the heating end (22). The feeding mechanism (1) located in front of the heating end (22) has a lower speed than the feeding mechanism (1) located behind the heating end (22). The speed difference will break the molten metal wire.

8. The feeding and cutting device for metal wire according to claim 5, characterized in that: The cutting mechanism (3) includes a compression cutting section (303) disposed between the heating end (22) and the feeding mechanism (1).

9. A wire feeding and cutting device according to claims 6-8, characterized in that: The feeding mechanism (1), heating mechanism (2) and cutting mechanism (3) are located in the oxygen-isolated sealing cavity (6), and the oxygen-isolated sealing cavity (6) is equipped with a gas discharge pump (7) for discharging gas.

10. The feeding and cutting device for metal wire according to claim 9, characterized in that: The roller (101), straightening roller (5) and reversing roller (4) are all made of ceramic material.

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