A copper wire cutting device and method

Abstract

The present invention discloses a copper wire cutting device and method, which includes a workbench and a cutting mechanism. A film covering mechanism, a feeding mechanism, and a cooling mechanism are arranged on the workbench. The cutting mechanism includes a hydraulic telescopic rod, a sliding table, and a cutting tool. The hydraulic telescopic rod is fixedly installed at the upper end of the workbench, the sliding table is installed at the bottom of the hydraulic telescopic rod, and the cutting tool is installed at the bottom of the sliding table. The film covering mechanism includes a first copper wire fixing seat and a second copper wire fixing seat that cooperate with each other. The feeding mechanism includes a feeding box, a feeding roller, and a first paddle. The feeding mechanism is installed at the rear side of the film covering mechanism. The cooling mechanism includes a refrigerant bottle, a nozzle, a valve core, and a second paddle. The cooling mechanism is installed in the second copper wire fixing seat. The present invention has the advantages of being able to cover the film in time to prevent the copper wire from oxidizing, improving the quality and production efficiency of the copper wire, and solving the problems that the traditional cutting method easily causes the oxidation of the end face of the copper wire, affects its electrical performance, and increases the subsequent processing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of copper wire cutting devices, and particularly to a copper wire cutting device and method. Background Art

[0002] High-precision copper wires are usually used in applications that require extremely high reliability and conductivity, such as precision electronic devices, aerospace vehicles, medical devices, high-performance computers, telecommunication infrastructures, and high-end automotive electronic systems, etc.

[0003] When the copper wire is exposed to the air during the cutting process, especially under high-temperature conditions, it is very easy to undergo an oxidation reaction to form a copper oxide layer, which has a negative impact on the electrical conductivity of the copper wire. Moreover, after the copper wire is cut, its cut end is exposed and is prone to oxidation after long-term storage. When the copper wire is used, the end face often requires additional treatment to remove the oxide layer to ensure the conductivity of the copper wire end face and avoid virtual connection of the wire, which increases the additional cost and time. Therefore, a copper wire cutting device and method are needed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a copper wire cutting device and method, which have the advantages of being able to timely apply a film to prevent the oxidation of the copper wire and improve the quality and production efficiency of the copper wire, and solve the problems that the traditional cutting method is easy to cause oxidation of the copper wire end face, affect its electrical performance and increase the subsequent processing cost.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A copper wire cutting device includes a workbench and a cutting mechanism, and a film covering mechanism, a feeding mechanism, and a cooling mechanism are arranged on the workbench;

[0006] The cutting mechanism includes a hydraulic telescopic rod, a sliding table, and a cutting tool. The hydraulic telescopic rod is fixedly installed at the upper end of the workbench, the sliding table is installed at the bottom of the hydraulic telescopic rod, and the cutting tool is installed at the bottom of the sliding table;

[0007] The film covering mechanism includes a first copper wire fixing seat and a second copper wire fixing seat that cooperate with each other. The first copper wire fixing seat is fixedly installed on the workbench, and an electric heating wire is arranged inside the first copper wire fixing seat. The second copper wire fixing seat is movably installed at the lower end of the sliding table;

[0008] The feeding mechanism includes a feeding box, a feeding roller, and a first dial. The feeding mechanism is installed at the rear side of the film covering mechanism;

[0009] The cooling mechanism includes a refrigerant bottle, a spray head, a valve core, and a second dial. The cooling mechanism is installed inside the second copper wire fixing seat.

[0010] Preferably, as a copper wire cutting device of the present invention, when the first copper wire fixing seat and the second copper wire fixing seat cooperate, a copper wire positioning groove and a film covering groove are formed. A piston cavity is provided on the upper end surface of the first copper wire fixing seat. A first piston and a first spring are arranged in the piston cavity. A second piston is movably connected in the film covering groove. The heating wire is located at the lower end of the second piston. The bottom of the piston cavity communicates with the bottom of the film covering groove.

[0011] Preferably, as a copper wire cutting device of the present invention, guide rods are provided at the bottom of the sliding table. Second springs are sleeved on the guide rods. Guide holes cooperating with the positioning rods are provided on the first positioning seat. The first positioning seat and the sliding table are elastically slidably connected through the guide rods, guide seats and second springs. A pressing block corresponding to the position of the first piston is provided at the bottom of the guide rod. The pressing block passes through the first positioning seat and is slidably connected. The cutting knife passes through the second positioning seat and is slidably connected thereto.

[0012] Preferably, as a copper wire cutting device of the present invention, a storage chamber and a material transfer chamber are provided in the feeding box. A discharge port is provided on the side of the material transfer chamber. The feeding roller and the first dial are installed in the material transfer chamber and rotatably connected to the feeding box. A bushing is provided on the side end surface of the first dial. The bushing is sleeved on the feeding roller and rotatably connected thereto through a one-way bearing. The bushing and the feeding box are elastically connected through a first torsion spring.

[0013] Preferably, as a copper wire cutting device of the present invention, a limiting groove is provided on the front end surface of the feeding box. The first dial is installed in the limiting groove. The upper end surface of the limiting groove is horizontally arranged. The included angle between the lower end surface and the upper end surface of the limiting groove is sixty degrees.

[0014] Preferably, as a copper wire cutting device of the present invention, feeding blades are provided on the side of the feeding roller. The feeding blades are six groups of arc-shaped blades. The feeding blades are equidistantly arranged in a circumferential array on the side of the feeding roller. A guide plate is provided at the discharge port.

[0015] Preferably, as a copper wire cutting device of the present invention, an air flow channel connected to the refrigerant bottle is provided in the second copper wire fixing seat. The nozzle is fixedly installed at the bottom of the air flow channel. A sliding hole is provided on the side wall of the air flow channel. The valve core is inserted into the sliding hole and slidably connected to the second copper wire fixing seat.

[0016] Preferably, as a copper wire cutting device of the present invention, a rotating shaft and a second torsion spring are provided on the side of the second dial. The second dial and the first copper wire fixing base are elastically rotatably connected through the rotating shaft and the second torsion spring. A connecting rod in a rotating connection is provided between the second dial and the valve core.

[0017] Preferably, as a copper wire cutting device of the present invention, a limiting flange is provided on the side end face of the second copper wire fixing seat.

[0018] A method for using a copper wire cutting device includes the following steps:

[0019] Step 1: Pre-place a certain amount of paraffin in the film coating tank, start the heating wire, heat the second piston through the heating wire, so that the second piston heats the paraffin above it to keep it molten, so that a paraffin film can be covered on the surface of the copper tube after cutting;

[0020] Step 2: Place the copper wire in the copper wire positioning groove of the first copper wire fixing seat, start the hydraulic telescopic rod, drive the cutting knife to move downward to cut the copper wire, and trigger the feeding mechanism to supplement paraffin balls into the film coating tank to ensure sufficient paraffin in the film coating tank;

[0021] Step 3: After cutting, make the hydraulic telescopic rod drive the cutting knife to reset and prepare for the next cutting. During the reset process, trigger the cooling mechanism to cool the surface of the cut copper wire, so that the molten paraffin on its surface quickly solidifies, thus forming a wax seal.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. Through the film coating mechanism of the present invention, during the cutting process of the equipment, the copper wire is located in the molten paraffin in the film coating tank, which effectively isolates the contact between the copper wire cut and the air, thus avoiding the oxidation problem caused by the thermal effect during the cutting process. Once the copper wire is cut, its two ends will be immediately covered by paraffin. This paraffin film can protect the copper wire cut from oxygen, moisture and other pollutants in the air, so as to maintain the purity and conductivity of the copper wire for a long time. This instant film coating technology is not only applicable to the instant protection during the production process, but also can provide long-term anti-corrosion protection for subsequent transportation and storage, ensuring the quality of the product throughout the supply chain. When using the copper wire, there is no need to polish the cut surface again, improving the convenience of use.

[0024] 2. By setting a feeding mechanism on the workbench in the present invention, when the paraffin is consumed, the feeding mechanism can automatically supplement paraffin balls, and these paraffin balls are sent into the film coating tank through the feeding roller to ensure that the supply of paraffin is always sufficient. This automatic feeding mechanism eliminates the need for manual addition of paraffin, reduces the downtime, improves the continuity and overall efficiency of the production line. By precisely controlling the feeding amount, the situation of overfeeding or underfeeding can be avoided, ensuring that the amount of paraffin in the film coating tank is maintained at an ideal level, thus optimizing the production process and ensuring the continuity and automation degree of the equipment processing and production.

[0025] 3. By providing a cooling mechanism on the second copper wire fixing seat, the present invention utilizes a refrigerant to rapidly reduce the temperature of the copper wire surface, enabling the paraffin film to quickly harden. The hardened paraffin film makes it easier to remove the copper wire from the film coating tank, reducing the waiting time and thus accelerating the speed of the entire production cycle. The rapid response of the cooling mechanism means that the equipment can quickly be ready for the next cutting task, further improving the overall efficiency of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a right view of the present invention;

[0028] Figure 3 is a front view of the present invention;

[0029] Figure 4 is the Figure 3 A - A sectional view of the present invention;

[0030] Figure 5 is the Figure 3 B - B sectional view of the present invention;

[0031] Figure 6 is the Figure 4 enlarged view at C of the present invention;

[0032] Figure 7 is the Figure 4 enlarged view at D of the present invention;

[0033] Figure 8 is the Figure 5 enlarged view at E of the present invention;

[0034] Figure 9 is a schematic diagram of the mating state of the first and second paddles of the present invention;

[0035] Figure 10 is an exploded view of the sliding table and the second copper wire fixing seat of the present invention.

[0036] In the figure: 1, workbench; 2, cutting mechanism; 201, hydraulic telescopic rod; 202, sliding table; 2021, guide rod; 2022, second spring; 2023, pressing block; 203, cutting knife; 3, film covering mechanism; 301, first copper wire fixing seat; 3011, positioning groove; 3012, film covering groove; 3013, first piston; 3014, first spring; 3015, second piston; 3016, heating wire; 3017, piston chamber; 302, second copper wire fixing seat; 3021, guide hole; 4, feeding mechanism; 401, feeding box; 4011, storage chamber; 4012, material transfer chamber; 4013, discharging port; 4014, guide plate; 4015, limiting groove; 402, feeding roller; 4021, material pushing blade; 403, first pushing piece; 4031, bushing; 404, first torsion spring; 5, cooling mechanism; 501, refrigerant bottle; 502, spray head; 503, valve core; 504, second pushing piece; 5041, rotating shaft; 5042, second torsion spring; 5043, connecting rod; 5044, limiting flange; 5045, air flow channel. Detailed implementation manner

[0037] Please refer to Figures 1 - 10 , a copper wire cutting device, including a workbench 1 and a cutting mechanism 2, and a film covering mechanism 3, a feeding mechanism 4 and a cooling mechanism 5 are arranged on the workbench 1;

[0038] The cutting mechanism 2 includes a hydraulic telescopic rod 201, a sliding table 202 and a cutting knife 203. The hydraulic telescopic rod 201 is fixedly installed at the upper end of the workbench 1, the sliding table 202 is installed at the bottom of the hydraulic telescopic rod 201, and the cutting knife 203 is installed at the bottom of the sliding table 202;

[0039] The film covering mechanism 3 includes a first copper wire fixing seat 301 and a second copper wire fixing seat 302 which cooperate with each other. The first copper wire fixing seat 301 is fixedly installed on the workbench 1, a heating wire 3016 is arranged in the first copper wire fixing seat 301, and the second copper wire fixing seat 302 is movably installed at the lower end of the sliding table 202;

[0040] The feeding mechanism 4 includes a feeding box 401, a feeding roller 402 and a first pushing piece 403. The feeding mechanism 4 is installed at the rear side of the film covering mechanism 3;

[0041] The cooling mechanism 5 includes a refrigerant bottle 501, a spray head 502, a valve core 503 and a second pushing piece 504. The cooling mechanism 5 is installed in the second copper wire fixing seat 302, and the refrigerant bottle 501 is filled with liquid carbon dioxide or liquid nitrogen.

[0042] When the first copper wire fixing seat 301 and the second copper wire fixing seat 302 cooperate, a copper wire positioning groove 3011 and a film covering groove 3012 are formed. A sealing ring is arranged on the inner end surface of the copper wire positioning groove 3011 to ensure the sealing between the copper wire and the first copper wire fixing seat 301 and the second copper wire fixing seat 302, and prevent the leakage of paraffin melt. A piston cavity 3017 is arranged on the upper end surface of the first copper wire fixing seat 301. A first piston 3013 and a first spring 3014 are arranged in the piston cavity 3017. A second piston 3015 which is movably connected is arranged in the film covering groove 3012. An electric heating wire 3016 is located at the lower end of the second piston 3015. The bottom of the piston cavity 3017 is communicated with the bottom of the film covering groove 3012.

[0043] When the first piston 3013 presses downwards, the first piston 3013 presses the air in the piston cavity 3017 into the bottom of the film covering groove 3012, so that the second piston 3015 moves upwards, making the paraffin melt in the film covering groove 3012 move upwards to cover the surface of the copper wire. And the copper wire cutting is carried out in the paraffin melt, isolated from the external air, ensuring that the cut end surface does not contact with the air and avoiding the oxidation of the copper wire cut surface. The electric heating wire 3016 heats the second piston 3015 to keep the paraffin at its upper end in a molten state.

[0044] Guide rods 2021 are arranged at the bottom of the sliding table 202. Second springs 2022 are sleeved on the guide rods 2021. Guide holes 3021 which cooperate with the positioning rods are arranged on the first positioning seat. The first positioning seat and the sliding table 202 are elastically slidably connected through the guide rods 2021, guide seats and second springs 2022. A pressing block 2023 corresponding to the position of the first piston 3013 is arranged at the bottom of the guide rod 2021. The pressing block 2023 passes through the first positioning seat and is slidably connected. The cutting tool 203 passes through the second positioning seat and is slidably connected with it.

[0045] After the first positioning seat and the second positioning seat cooperate, the sliding table 202 continues to feed downwards, making the cutting tool 203 and the pressing block 2023 slide downwards, so that the cutting tool 203 cuts the copper wire, and the pressing block 2023 squeezes the first piston 3013 to make it move downwards. Under the action of air pressure, the second piston 3015 is pushed up, making the liquid level of the molten paraffin at the upper end of the second piston 3015 rise to completely cover the copper wire.

[0046] A storage chamber 4011 and a material conveying chamber 4012 are arranged in the feeding box 401. A discharge port 4013 is arranged on the side surface of the material conveying chamber 4012. A feeding roller 402 and a first dial 403 are installed in the material conveying chamber 4012 and are rotatably connected with the feeding box 401. A bushing 4031 is arranged on the side end surface of the first dial 403. The bushing 4031 is sleeved on the feeding roller 402 and is rotatably connected with it through a one-way bearing. The bushing 4031 and the feeding box 401 are elastically connected through a first torsion spring 404.

[0047] When the first paddle 403 is pressed down, the first paddle 403 can drive the feeding roller 402 to rotate through the bushing 4031, so that the feeding roller 402 stirs the paraffin wax balls in the material transfer chamber 4012 to move, and discharges them through the discharge port 4013. After the discharging is completed, the bushing 4031 moves upward and resets under the reset action of the first torsion spring 404, while the feeding roller 402 remains stationary under the action of the one-way bearing.

[0048] A limiting groove 4015 is provided on the front end face of the feeding box 401. The first paddle 403 is installed in the limiting groove 4015. The upper end face of the limiting groove 4015 is horizontally arranged, and the included angle between the lower end face and the upper end face of the limiting groove 4015 is sixty degrees.

[0049] The limiting groove 4015 limits the downward rotation angle and the reset angle of the first paddle 403, avoiding excessive downward rotation of the first paddle 403, resulting in excessive feeding, and ensuring that the first paddle 403 remains horizontal when reset, so that when the first positioning seat resets upward, it cooperates with the second paddle 504 on its side to push the second paddle 504 to rotate.

[0050] The side of the feeding roller 402 is provided with feeding blades 4021. The feeding blades 4021 are six groups of arc-shaped blades. The feeding blades 4021 are equidistantly arranged in a circumferential array on the side of the feeding roller 402. A guide plate 4014 is provided at the discharge port 4013.

[0051] The included angle between adjacent feeding blades 4021 is sixty degrees. Each time the first paddle 403 is toggled, a group of feeding blades 4021 completes one discharging. The discharged paraffin wax balls fall into the film coating groove 3012 under the guidance of the guide plate 4014, thereby replenishing the material and keeping the amount of paraffin melt in the film coating groove 3012 relatively stable.

[0052] An air flow channel 5045 connected to the refrigerant bottle 501 is provided in the second copper wire fixing seat 302. The spray head 502 is fixedly installed at the bottom of the air flow channel 5045. A sliding hole is provided on the side wall of the air flow channel 5045. The valve core 503 is inserted into the sliding hole and is slidably connected to the second copper wire fixing seat 302.

[0053] When the valve core 503 is pulled out, the spray head 502 is communicated with the refrigerant bottle 501, and the refrigerant in the refrigerant bottle 501 is quickly ejected from the spray head 502, so that the surface of the wire is quickly cooled, and the paraffin on the guiding surface quickly solidifies and cakes, thus facilitating transportation.

[0054] A rotating shaft 5041 and a second torsion spring 5042 are provided on the side of the second paddle 504. The second paddle 504 is elastically rotatably connected to the first copper wire fixing base through the rotating shaft 5041 and the second torsion spring 5042. A connecting rod 5043 with a rotating connection is provided between the second paddle 504 and the valve core 503.

[0055] When the second paddle 504 rotates, the second paddle 504 pulls the valve core 503 through the connecting rod 5043, pulls out the valve core 503, connects the air flow channel 5045, and the refrigerant in the air flow channel 5045 sprays out rapidly. After a short spray, the second paddle 504 quickly resets under the reset action of the second torsion spring 5042 to prepare for the next action.

[0056] The side end face of the second copper wire fixing seat 302 is provided with a limiting flange 5044.

[0057] The rotation angle of the second paddle 504 is limited by the limiting flange 5044, so that the second flange can only flip downward and cannot flip upward. Thus, when the second copper wire fixing seat 302 moves downward, the second paddle 504 presses down the first paddle 403, causing the first paddle 403 to rotate counterclockwise and trigger the feeding mechanism 4. When the second copper wire fixing seat 302 moves upward, the first paddle 403 presses down the second paddle 504, causing the second paddle 504 to move clockwise and trigger the cooling mechanism 5.

[0058] Please refer to Figures 1 - 10 , a method of using a copper wire cutting device, including the following steps:

[0059] Step 1: Pre-place a certain amount of paraffin in the film coating tank 3012, start the heating wire 3016, heat the second piston 3015 through the heating wire 3016, so that the second piston 3015 heats the paraffin at its upper end to keep it in a molten state, ensuring that the molten paraffin can completely submerge the copper wire to prevent the end face of the copper wire from contacting the air during the cutting process, and a paraffin film can be coated on the surface of the copper tube after cutting is completed;

[0060] Step 2: Place the copper wire in the copper wire positioning groove 3011 of the first copper wire fixing seat 301, with the position to be cut directly below the cutting knife 203. Start the hydraulic expansion link 201 to drive the cutting knife 203 to move downward for cutting the copper wire. When the hydraulic expansion link 201 drives the slide table 202 to slide downward, the second copper wire fixing seat 302 is buckled with the first copper wire fixing seat 301, making the film coating tank 3012 a semi-closed cavity with an open top. The slide table 202 continues to feed downward, causing the pressing block 2023 to squeeze the first piston 3013 downward, and the second piston 3015 slides upward under the action of air pressure, so that the paraffin melt submerges the copper wire, and the cutting knife 203 cuts the copper wire;

[0061] During the downward movement of the sliding table 202, the feeding mechanism 4 is triggered by the cooperation of the first flap 403 and the second flap 504. Under the action of the limiting flange 5044, the second flap 504 presses down the first flap 403, causing the bushing 4031 on the first flap 403 to drive the feeding roller 402 to rotate. As a result, the feeding blade 4021 deflects the paraffin balls towards the discharge port 4013 and falls into the positioning groove 3011 to supplement the paraffin in the film coating tank 3012, ensuring sufficient and stable paraffin in the film coating tank 3012.

[0062] Step 3: After cutting is completed, the hydraulic telescopic rod 201 drives the cutter 203 to move upward to reset for the next cutting. During the reset process, the first flap 403 and the second flap 504 cooperate again to trigger the cooling mechanism 5. Under the action of the limiting groove 4015, the first flap 403 presses down the second flap 504, causing the second flap 504 to rotate clockwise along the rotating shaft 5041. As a result, the valve core 503 is driven by the connecting rod 5043, causing the spray head 502 to be briefly connected to the refrigerant bottle 501, and the liquid carbon dioxide or liquid nitrogen in the refrigerant bottle 501 is ejected to cool the surface of the copper wire after cutting. The molten paraffin on the surface of the copper wire quickly solidifies, forming a wax seal, and then the cut wire is transported to the next process for packaging.

[0063] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A copper wire cutting device, comprising a workbench (1) and a cutting mechanism (2), characterized in that: A film covering mechanism (3), a feeding mechanism (4) and a cooling mechanism (5) are arranged on the workbench (1); The cutting mechanism (2) includes a hydraulic telescopic rod (201), a sliding table (202) and a cutting tool (203). The hydraulic telescopic rod (201) is fixedly installed at the upper end of the workbench (1), the sliding table (202) is installed at the bottom of the hydraulic telescopic rod (201), and the cutting tool (203) is installed at the bottom of the sliding table (202); The film covering mechanism (3) includes a first copper wire fixing seat (301) and a second copper wire fixing seat (302) which cooperate with each other. The first copper wire fixing seat (301) is fixedly installed on the workbench (1), and a heating wire (3016) is arranged in the first copper wire fixing seat (301). The second copper wire fixing seat (302) is movably installed at the lower end of the sliding table (202); The feeding mechanism (4) includes a feeding box (401), a feeding roller (402) and a first paddle (403). The feeding mechanism (4) is installed at the rear side of the film covering mechanism (3); The cooling mechanism (5) includes a refrigerant bottle (501), a spray head (502), a valve core (503) and a second paddle (504). The cooling mechanism (5) is installed in the second copper wire fixing seat (302); When the first copper wire fixing seat (301) and the second copper wire fixing seat (302) cooperate, a copper wire positioning groove (3011) and a film covering groove (3012) are formed. A piston cavity (3017) is arranged on the upper end surface of the first copper wire fixing seat (301). A first piston (3013) and a first spring (3014) are arranged in the piston cavity (3017). A second piston (3015) which is movably connected is arranged in the film covering groove (3012). The heating wire (3016) is located at the lower end of the second piston (3015). The bottom of the piston cavity (3017) is communicated with the bottom of the film covering groove (3012); When the first piston (3013) presses down, the first piston (3013) presses the air in the piston cavity (3017) into the bottom of the film covering groove (3012), so that the second piston (3015) moves upward, and the paraffin melt in the film covering groove (3012) moves upward to cover the surface of the copper wire. And the copper wire cutting is carried out in the paraffin melt, isolated from the external air, ensuring that the cut end surface does not contact with the air, avoiding oxidation of the copper wire cut surface, and heating the second piston (3015) through the heating wire (3016) to keep the paraffin at its upper end in a molten state.

2. The copper wire cutting device according to claim 1, characterized in that: A material replenishing box (401) is provided with a material storage chamber (4011) and a material transfer chamber (4012). A discharge port (4013) is arranged on the side of the material transfer chamber (4012). A replenishing roller (402) and a first paddle (403) are installed in the material transfer chamber (4012) and rotatably connected to the material replenishing box (401). A bushing (4031) is arranged on the side end face of the first paddle (403). The bushing (4031) is sleeved on the replenishing roller (402) and rotatably connected thereto through a one-way bearing. The bushing (4031) and the material replenishing box (401) are elastically connected through a first torsion spring (404).

3. A copper wire cutting device according to claim 1, characterized in that: A limiting groove (4015) is arranged on the front end face of the material replenishing box (401). The first paddle (403) is installed in the limiting groove (4015). The upper end face of the limiting groove (4015) is horizontally arranged. The included angle between the lower end face and the upper end face of the limiting groove (4015) is sixty degrees.

4. A copper wire cutting device according to claim 2, characterized in that: Paddle blades (4021) are arranged on the side of the replenishing roller (402). The paddle blades (4021) are six groups of arc-shaped blades. The paddle blades (4021) are circumferentially and equally arrayed on the side of the replenishing roller (402). A guiding plate (4014) is arranged at the discharge port (4013).

5. A copper wire cutting device according to claim 1, characterized in that: An air flow channel (5045) connected to a refrigerant bottle (501) is arranged in the second copper wire fixing seat (302). A spray head (502) is fixedly installed at the bottom of the air flow channel (5045). A sliding hole is arranged on the side wall of the air flow channel (5045). A valve core (503) is inserted into the sliding hole and slidably connected to the second copper wire fixing seat (302).

6. A copper wire cutting device as claimed in claim 1, wherein: A limiting flange (5044) is arranged on the side end face of the second copper wire fixing seat (302).

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