A cutting device for soft copper strip production and its working method

Abstract

The present invention discloses a cutting device for the production of soft copper bars and its working method. The cutting device includes a mounting base, a positioning mechanism, a cutting mechanism, and an electrostatic sorting mechanism. A waste collection port is provided on the mounting base and is connected to the electrostatic sorting mechanism. The positioning mechanism includes a base with a plurality of positioning shafts, and the cutting tooling is installed on the base through the positioning shafts. A fixture is provided in the cutting groove, and the fixture is driven by a cylinder. The cutting mechanism includes a tool holder, a cutting knife, and a cutting cylinder; the electrostatic sorting mechanism sorts through the cooperation of a vertical electrostatic field and a suction fan, and copper chips and insulating debris enter the corresponding recovery chambers respectively to achieve efficient separation; waste and coolant enter the sorting channel simultaneously, and the coolant is filtered through a filter screen and reused, improving the recycling rate of the coolant; through the lubrication and dispersion effects of the coolant, the sorting efficiency is improved, consumption is reduced, and the efficient recovery and closed-loop utilization of resources are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of soft copper busbar production equipment, and particularly to a cutting device for soft copper busbar production and its working method. Background Art

[0002] As a key conductive component in power electronic equipment, soft copper busbars are widely used in fields such as new energy vehicles, photovoltaic inverters, and rail transit. In its production process, it needs to go through processes such as cutting, bending, and welding. With the continuous increase of industrial demands, how to improve production efficiency, ensure product quality, and reduce environmental impact has become an urgent problem to be solved.

[0003] In the prior art, a Chinese patent with the authorization announcement number CN117961564B proposed a fully automatic production system for soft copper busbars. This system includes a feeding mechanism, a cutting mechanism, a laminating mechanism, a welding mechanism, a cooling mechanism, a die-cutting mechanism, and a polishing mechanism. Specifically, the feeding mechanism consists of a feeding component and a feeding guiding component. The feeding component is used for the unwinding of soft copper sheets and guides the soft copper sheets to the feeding guiding component. The cutting mechanism includes a cutting guiding component, a circular knife cutting component, and a cutting conveying component. Among them, the cutting guiding component guides the soft copper sheet into the circular knife cutting component, which cuts the strip-shaped soft copper sheet and sends it into the cutting conveying component, and then the cut soft copper sheet is conveyed to the next process through the cutting conveying component.

[0004] Although this fully automatic production system for soft copper busbars can efficiently and quickly complete the production of soft copper busbars, it still has some defects in practical applications. The most prominent one is the lack of waste sorting function. During the cutting process, the generated copper chips are mixed with insulating debris (such as oxide layers, paint skins, etc.). Traditional waste sorting methods usually rely on manual screening or magnetic separation. These methods not only result in a copper recovery rate of less than 80%, but also magnetic separation cannot effectively handle non-magnetic insulating debris, causing resource waste and environmental pollution. In addition, the traditional soft copper busbar cutting mechanism uses spray coolant for cooling, and the treatment method of the coolant also has environmental problems - the coolant is often directly discharged or only simply filtered, which cannot meet the increasingly strict environmental protection standards.

[0005] Therefore, the industry urgently needs a fully automated device integrating cutting, waste sorting, cooling, and detection functions, aiming to solve the technical bottlenecks in traditional production methods by optimizing the coordination among efficiency, quality, and environmental protection. This new type of device should not only have high-efficiency and precise production capabilities, but also effectively improve the copper recovery rate, reduce environmental pollution, and meet the requirements of modern manufacturing for sustainable development. Summary of the Invention

[0006] Object of the Invention: The object of the present invention is to provide a cutting device for soft copper busbar production and its working method, so as to solve the problem of the lack of waste sorting function in the prior art.

[0007] Technical solution:

[0008] A cutting device for the production of soft copper bars, including a mounting base, on the upper end of which a positioning mechanism and a cutting mechanism are provided. A waste collection port is opened on the upper end of the mounting base, and an electrostatic separation mechanism is provided at the lower end of the waste collection port;

[0009] The positioning mechanism includes a base, on the upper end of which a plurality of positioning shafts are provided. A cutting tooling is also installed on the upper end of the base through the positioning shafts. A cutting groove is provided on the cutting tooling. A clamp corresponding to the soft copper bar is arranged in the cutting groove. The clamp is connected to a driving cylinder. An opening communicating with the waste collection port is provided at the bottom of the cutting groove. A support block is arranged at the top of the cutting groove deviating from the cutting position;

[0010] The cutting mechanism includes a tool holder, a cutting knife and a cutting cylinder;

[0011] The electrostatic separation mechanism includes an electrostatic field, a copper chip recovery chamber and an insulating debris recovery chamber. The electrostatic field includes a positive plate and a negative plate arranged vertically opposite to each other. An electrostatic field screening channel is formed between the positive plate and the negative plate. The top inlet of the copper chip recovery chamber is located below the positive plate. The top inlet of the insulating debris recovery chamber is located below the negative plate. An air suction fan is provided in the insulating debris recovery chamber.

[0012] Further, the electrostatic separation mechanism further includes a coolant atomizing nozzle facing the cutting position. The coolant is a water-based nanofluid containing 0.1% - 0.5% graphene dispersion liquid.

[0013] Further, the coolant further includes 0.05% - 0.1% fluorocarbon surfactant, and the graphene in the coolant is graphene oxide.

[0014] Further, the positive plate is an integrated piezoelectric ceramic vibrating piece with an amplitude of 5μm and a frequency of 50Hz.

[0015] Further, the cutting device further includes a laser detection mechanism. The laser detection mechanism includes a laser sensor for detecting the height of cutting burrs and an alarm for alarming after detecting that the burr height is unqualified. The laser sensor is installed above the side end of the cutting groove.

[0016] Further, a plurality of guide shafts are also provided on the upper end of the base, and the tool holder is provided with guide grooves corresponding to the guide shafts.

[0017] Further, the lower ends of the copper chip recovery chamber and the insulating debris recovery chamber are both communicated with a coolant recovery chamber, and the copper chip recovery chamber, the insulating debris recovery chamber and the coolant recovery chamber are separated by a coolant filter screen.

[0018] The present invention also discloses a working method of a cutting device for soft copper busbars, including the following steps:

[0019] S1. Cutting preparation stage: Place the soft copper busbar in the cutting groove, and fix the soft copper busbar by driving the clamping blocks on the fixture to move relatively through the driving cylinder; drive the cutting knife downward by the cutting cylinder to the upper end of the soft copper busbar.

[0020] S2. Cutting and sorting stage: Drive the cutting knife to continue pressing down for cutting by the cutting cylinder; start the suction fan to suck the waste into the electrostatic field screening channel; the copper chips are adsorbed to the positive electrode plate, and the insulating debris falls into the insulating debris recovery chamber; turn off the suction fan and the electrostatic field, and the copper chips fall from the positive electrode plate into the copper chip recovery chamber.

[0021] Further, in step S2, when the cutting cylinder drives the cutting knife to continue pressing down for cutting, the coolant atomizing nozzle sprays the nanofluid synchronously. The working process of the coolant includes the following steps:

[0022] A1. Cooling, lubricating and protecting: The coolant reaches the cutting position to cool the contact area between the cutting knife and the soft copper busbar; the layered structure of graphene oxide forms a lubricating layer in the contact area between the cutting knife and the soft copper busbar to reduce the frictional resistance; the fluorocarbon surfactant forms a protective film on the surface of the soft copper busbar to cover the cutting area.

[0023] A2. Scrap flushing and dispersion: The coolant flushes the cutting area, flushes the waste into the waste collection port, and disperses the copper chips and insulating debris through atomizing spray.

[0024] A3. Coolant recovery: The coolant moves along with the copper chips and insulating debris, part of it falls into the insulating debris recovery chamber, part of it falls into the copper chip recovery chamber, and then continues to pass through the coolant filter screen to reach the coolant recovery chamber for recycling.

[0025] Further, after step S2, there is also step S3. Quality inspection and feedback stage: The laser detection mechanism scans the cut section. If the burr height is unqualified, trigger the shutdown and debug the equipment according to the unqualified situation.

[0026] Beneficial effects:

[0027] 1. Through the collaborative sorting design of the vertical electrostatic field and the suction fan, the separation efficiency of copper chips and insulating debris is significantly improved. The copper chips are adsorbed by the positive electrode plate in the electrostatic field, and the insulating debris is guided to the independent recovery chamber by the suction fan. The copper recovery rate is ≥99%, and the separation efficiency of insulating debris is ≥98%. At the same time, the coolant and the waste enter the sorting channel synchronously. The coolant is filtered through the filter screen and reused, and the copper chips and insulating debris enter the corresponding recovery chambers respectively, realizing the efficient recovery and closed-loop utilization of resources.

[0028] 2. After the coolant is atomized and sprayed, it enters the electrostatic separation mechanism together with the waste. During the separation process, the coolant flushes the waste to ensure that the copper chips and insulating debris are fully dispersed, improving the separation efficiency. After the separation is completed, the coolant is separated from the waste through a filter screen and enters the coolant recovery chamber for recycling, with a recycling rate ≥ 80%. At the same time, the coolant is not only a cooling medium, but also directly improves the separation efficiency through the lubrication of graphene oxide and the dispersion effect of fluorocarbon surfactant. It not only reduces the consumption of coolant, but also avoids the pollution of the coolant by the waste, achieving the maximum utilization of resources.

[0029] 3. Laser detection monitors the burr height in real time and conducts feedback debugging, increasing the yield rate to 99.5% and reducing subsequent rework.

[0030] 4. The cutting tooling automatically positions, separates waste, and recycles coolant in a closed-loop operation, greatly improving the cutting efficiency and reducing manual intervention by 90%. Brief Description of the Drawings

[0031] Figure 1 is a perspective view of the present invention;

[0032] Figure 2 is an enlarged view of the main structural position of the present invention Figure 1 ;

[0033] Figure 3 is an enlarged view of the main structural position of the present invention Figure 2 ;

[0034] Figure 4 is a flow diagram of insulating debris during the operation of the electrostatic separation mechanism of the present invention;

[0035] Figure 5 is a flow diagram of copper chips during the operation of the electrostatic separation mechanism of the present invention;

[0036] Reference Numerals: 1, mounting base; 11, waste collection port; 2, positioning mechanism; 21, base; 22, positioning shaft; 23, cutting tooling; 231, cutting groove; 232, fixture; 234, support block; 24, guide shaft; 3, cutting mechanism; 31, tool holder; 32, cutting knife; 33, cutting cylinder; 34, guide groove; 4, electrostatic separation mechanism; 41, electrostatic field; 411, positive electrode plate; 412, negative electrode plate; 42, copper chip recovery chamber; 43, insulating debris recovery chamber; 431, suction fan; 44, coolant atomizing nozzle; 45, coolant filter screen; 46, coolant recovery chamber; 5, laser detection mechanism; 51, laser sensor; 6, flexible copper busbar. Detailed Embodiments

[0037] To make the technical solutions of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] As Figures 1-5 shown, a cutting device for soft copper bar production includes a mounting base 1. A positioning mechanism 2 and a cutting mechanism 3 are arranged at the upper end of the mounting base 1. A waste collection port 11 is opened at the upper end of the mounting base 1, and an electrostatic sorting mechanism 4 is arranged at the lower end of the waste collection port 11;

[0040] The positioning mechanism 2 includes a base 21. Multiple positioning shafts 22 are arranged at the upper end of the base 21. A cutting tooling 23 is also installed on the upper end of the base 21 through the positioning shafts 22. A cutting groove 231 is arranged on the cutting tooling 23. A fixture 232 corresponding to the soft copper bar 6 is arranged in the cutting groove 231. The fixture 232 is connected with a driving cylinder. An opening communicating with the waste collection port 11 is arranged at the bottom of the cutting groove 231. A support block 234 is arranged at the top of the cutting groove 231 deviating from the cutting position;

[0041] The cutting mechanism 3 includes a tool holder 31, a cutting knife 32 and a cutting cylinder 33;

[0042] The electrostatic sorting mechanism 4 includes an electrostatic field 41, a copper chip recovery chamber 42 and an insulating debris recovery chamber 43. The electrostatic field 41 includes a positive electrode plate 411 and a negative electrode plate 412 which are arranged vertically opposite to each other. An electrostatic field screening channel is formed between the positive electrode plate 411 and the negative electrode plate 412. The top inlet of the copper chip recovery chamber 42 is located below the positive electrode plate 411. The top inlet of the insulating debris recovery chamber 43 is located below the negative electrode plate 412. An air suction fan 431 is arranged in the insulating debris recovery chamber 43.

[0043] In this embodiment, the positive electrode plate 411 is connected to a +10 kV high voltage, and the negative electrode plate 412 is grounded to form a vertical electric field (intensity 3 - 5 kV / cm). The copper chips are adsorbed by the positive electrode plate 411 due to their conductivity, and the insulating debris is not affected by the electric field force and directly falls into the insulating debris recovery chamber 43 under the action of the air suction fan 431.

[0044] Furthermore, the electrostatic sorting mechanism 4 further includes a coolant atomizing nozzle 44 facing the cutting position. The coolant is a water-based nanofluid containing 0.1% - 0.5% graphene dispersion liquid. The coolant atomizing spray covers the cutting area, and the contact temperature between the tool and the copper bar is reduced by evaporation heat absorption (the temperature drop is 20% - 30%) to prevent the tool from overheating and deforming. The layered structure of graphene forms a lubricating film on the tool surface, reducing the friction coefficient and reducing the adhesion of copper chips; the atomizing impact breaks the agglomeration of waste materials and improves the electrostatic sorting efficiency.

[0045] Further, the coolant further includes 0.05% - 0.1% fluorocarbon surfactant, and the graphene in the coolant is graphene oxide. The fluorocarbon surfactant forms a hydrophobic protective film on the surface of the copper busbar, blocking oxygen and moisture, and reducing the oxidation rate by 50%; graphene oxide (containing hydroxyl and carboxyl functional groups) enhances the dispersibility of the nanofluid and avoids the sedimentation of graphene.

[0046] Further, the positive electrode plate 411 is an integrated piezoelectric ceramic vibration piece with an amplitude of 5 μm and a frequency of 50 Hz. This causes the adsorbed copper chips to detach from the positive electrode plate, with the residue amount ≤ 0.1%.

[0047] Further, the cutting device is further provided with a laser detection mechanism 5. The laser detection mechanism 5 includes a laser sensor 51 for detecting the height of the cutting burr and an alarm for giving an alarm after detecting that the burr height is unqualified. The laser sensor 51 is installed above the side end of the cutting groove.

[0048] Further, a plurality of guide shafts 24 are further provided at the upper end of the base 21, and the tool holder 31 is provided with guide grooves 34 corresponding to the guide shafts 24.

[0049] Further, the lower ends of the copper chip recovery chamber 42 and the insulating debris recovery chamber 43 are both communicated with the coolant recovery chamber 46, and the copper chip recovery chamber 42, the insulating debris recovery chamber 43 and the coolant recovery chamber 46 are separated by a coolant filter screen 45.

[0050] In this embodiment, the aperture of the coolant filter screen 45 is 0.5 μm, which separates the coolant from the solid waste, and the coolant recovery rate ≥ 80%.

[0051] Embodiment 2

[0052] A working method of a cutting device for producing soft copper busbars includes the following steps:

[0053] S1. Cutting preparation stage: Place the soft copper busbar 6 in the cutting groove 231, and fix the soft copper busbar 6 by driving the clamping blocks on the fixture 232 to move relatively through the driving cylinder; the cutting cylinder 33 drives the cutting knife 32 to move downward to the upper end of the soft copper busbar 6.

[0054] S2. Cutting and sorting stage: The cutting cylinder 33 drives the cutting knife 32 to continue pressing down for cutting; the suction fan 431 is started, and the waste is sucked into the electrostatic field screening channel; the copper chips are adsorbed to the positive electrode plate 411, and the insulating debris falls into the insulating debris recovery chamber 43; the suction fan 431 and the electrostatic field 41 are turned off, and the copper chips fall from the positive electrode plate 411 to the copper chip recovery chamber 42.

[0055] Further, in step S2, when the cutting cylinder 33 drives the cutting knife 32 to continue pressing down for cutting, the coolant atomizing nozzle 44 synchronously sprays the nanofluid, and the working process of the coolant includes the following steps:

[0056] A1. Cooling, lubricating and protecting: When the coolant reaches the cutting position, it cools the contact area between the cutting tool 32 and the soft copper busbar 6; the layered structure of graphene oxide forms a lubricating layer in the contact area between the cutting tool 32 and the soft copper busbar 6 to reduce the frictional resistance; the fluorocarbon surfactant forms a protective film on the surface of the soft copper busbar 6 to cover the cutting area.

[0057] A2. Scrap flushing and dispersion: The coolant flushes the cutting area, flushes the scrap into the scrap collection port 11, and disperses the copper chips and insulating debris through atomized spraying.

[0058] A3. Coolant recycling: The coolant moves along with the copper chips and insulating debris, part of it falls into the insulating debris recycling chamber 43, part of it falls into the copper chip recycling chamber 42, and then continues to pass through the coolant filter screen 45 to reach the coolant recycling chamber 46 for recycling.

[0059] Further, after step S2, there is also step S3, the quality inspection and feedback stage: The laser detection mechanism 5 scans the cut section. If the burr height is unqualified, it triggers a shutdown and debugs the equipment according to the unqualified situation.

[0060] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A cutting device for the production of soft copper bars, characterized in that, It includes a mounting base (1). A positioning mechanism (2) and a cutting mechanism (3) are arranged at the upper end of the mounting base (1). A waste collection port (11) is formed at the upper end of the mounting base (1), and an electrostatic separation mechanism (4) is arranged at the lower end of the waste collection port (11). The positioning mechanism (2) includes a base (21). A plurality of positioning shafts (22) are arranged at the upper end of the base (21). A cutting tooling (23) is also installed on the upper end of the base (21) through the positioning shafts (22). A cutting groove (231) is arranged on the cutting tooling (23). A fixture (232) corresponding to the flexible copper strip (6) is arranged in the cutting groove (231). The fixture (232) is connected with a driving cylinder. An opening communicating with the waste collection port (11) is arranged at the bottom of the cutting groove (231). A support block (234) is arranged at the top of the cutting groove (231) deviating from the cutting position. The cutting mechanism (3) includes a tool holder (31), a cutting knife (32) and a cutting cylinder (33). The electrostatic separation mechanism (4) includes an electrostatic field (41), a copper chip recovery chamber (42) and an insulating debris recovery chamber (43). The electrostatic field (41) includes a positive electrode plate (411) and a negative electrode plate (412) which are arranged vertically opposite to each other. An electrostatic field screening channel is formed between the positive electrode plate (411) and the negative electrode plate (412). The top inlet of the copper chip recovery chamber (42) is located below the positive electrode plate (411). The top inlet of the insulating debris recovery chamber (43) is located below the negative electrode plate (412). An air suction fan (431) is arranged in the insulating debris recovery chamber (43). The electrostatic separation mechanism (4) further includes a coolant atomizing nozzle (44) arranged towards the cutting position. The coolant is a water-based nanofluid containing 0.1% - 0.5% graphene dispersion liquid. The coolant further includes 0.05% - 0.1% fluorocarbon surfactant. The graphene of the coolant is graphene oxide.

2. The cutting device for soft copper bar production according to claim 1, wherein, The positive electrode plate (411) is an integrated piezoelectric ceramic vibrating piece with an amplitude of 5μm and a frequency of 50Hz.

3. The cutting device for producing soft copper bars according to claim 1, characterized in that, The cutting device further includes a laser detection mechanism (5). The laser detection mechanism (5) includes a laser sensor (51) for detecting the height of cutting burrs and an alarm for alarming after detecting that the burr height is unqualified. The laser sensor (51) is installed above the side end of the cutting groove.

4. A cutting device for the production of soft copper bars according to claim 1, characterized in that, A plurality of guide shafts (24) are also arranged at the upper end of the base (21). The tool holder (31) is provided with guide grooves (34) corresponding to the guide shafts (24).

5. A cutting device for the production of soft copper bars according to claim 1, characterized in that, The lower ends of the copper chip recovery chamber (42) and the insulating debris recovery chamber (43) are both communicated with a coolant recovery chamber (46), and the copper chip recovery chamber (42), the insulating debris recovery chamber (43) and the coolant recovery chamber (46) are separated by a coolant filter screen (45).

6. A working method of a cutting device for producing soft copper bars as described in claim 1, characterized in that, It includes the following steps: S1. Cutting Preparation Stage: Place the flexible copper busbar (6) into the cutting groove (231), and fix the flexible copper busbar (6) by driving the clamping blocks on the fixture (232) to move relatively through the driving cylinder; the cutting cylinder (33) drives the cutting knife (32) to move downward to the upper end of the flexible copper busbar (6). S2. Cutting and Sorting Stage: The cutting cylinder (33) drives the cutting knife (32) to continue pressing down for cutting; the suction fan (431) starts to suck the waste into the electrostatic field screening channel; the copper chips are adsorbed to the positive electrode plate (411), and the insulating debris falls into the insulating debris recovery chamber (43); turn off the suction fan (431) and the electrostatic field (41), and the copper chips fall off from the positive electrode plate (411) and drop into the copper chip recovery chamber (42).

7. The working method of a cutting device for soft copper bar production according to claim 6, characterized in that The electrostatic sorting mechanism (4) further includes a coolant atomizing nozzle (44) arranged towards the cutting position. The coolant is a water-based nanofluid containing 0.1% - 0.5% graphene dispersion; the coolant further includes 0.05% - 0.1% fluorocarbon surfactant, and the graphene in the coolant is graphene oxide; the lower ends of the copper chip recovery chamber (42) and the insulating debris recovery chamber (43) are both connected to the coolant recovery chamber (46), and the copper chip recovery chamber (42), the insulating debris recovery chamber (43) and the coolant recovery chamber (46) are separated by a coolant filter screen (45); in step S2, when the cutting cylinder (33) drives the cutting knife (32) to continue pressing down for cutting, the coolant atomizing nozzle (44) sprays the nanofluid synchronously. The working process of the coolant includes the following steps: A1. Cooling, Lubricating and Protecting: The coolant reaches the cutting position to cool the contact area between the cutting knife (32) and the flexible copper busbar (6); the layered structure of graphene oxide forms a lubricating layer in the contact area between the cutting knife (32) and the flexible copper busbar (6) to reduce the frictional resistance; the fluorocarbon surfactant forms a protective film on the surface of the flexible copper busbar (6) to cover the cutting area. A2. Scrap Flushing and Dispersion: The coolant flushes the cutting area, flushes the waste into the waste collection port (11), and disperses the copper chips and insulating debris through atomizing spraying. A3. Coolant Recovery: The coolant moves along with the copper chips and insulating debris, part of it falls into the insulating debris recovery chamber (43), part of it falls into the copper chip recovery chamber (42), and then continues to pass through the coolant filter screen (45) to reach the coolant recovery chamber (46) for recycling.

8. The working method of a cutting device for soft copper bar production according to claim 6, characterized in that, The cutting device further includes a laser detection mechanism (5). The laser detection mechanism (5) includes a laser sensor (51) for detecting the height of the cutting burr and an alarm for alarming after detecting that the burr height is unqualified. The laser sensor (51) is installed above the side end of the cutting groove. After step S2, it further includes step S3. Quality Detection and Feedback Stage: The laser detection mechanism (5) scans the cut section. If the burr height is unqualified, trigger a shutdown and debug the equipment according to the unqualified situation.

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