Automatic copper foil cutting machine

Abstract

The invention provides an automatic copper foil cutting machine, and belongs to the technical field of copper foil processing, the automatic copper foil cutting machine comprises two supports arranged in a mirror image mode, and is characterized by further comprising a lower cutter unit arranged between the two supports, the lower cutter unit comprises a lower cutter die and a lower blade, the two ends of the lower cutter die are fixed to the two supports respectively, and the lower blade is arranged on the lower cutter die; the lower blade is arranged on the lower cutting die; the upper cutter unit is arranged between the two supports and can slide up and down on the supports, the upper cutter unit comprises an upper cutter die and an upper blade, and the upper blade is obliquely arranged on the upper cutter die, so that one end of a cutting edge is higher than the other end of the cutting edge; the upper blade and the lower blade are arranged in a crossed mode, the intersection point is arranged at the position close to one end, meanwhile, the upper blade is pushed by the elastic piece to abut against the lower blade all the time, and therefore when copper foil is cut, cutting defects caused by a gap between the upper blade and the lower blade are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of copper foil processing, and in particular relates to an automatic copper foil cutting machine. Background Art

[0002] Copper foil, especially electronic grade copper foil, is one of the important basic materials of the electronics industry. With the rapid development of the electronic information industry, its usage is increasing and its application fields are becoming wider and wider. Among them, the copper foil used in printed circuit boards and lithium-ion batteries is the largest.

[0003] Before copper foil is further used in other finished products, it is usually necessary to cut it to obtain copper foil blocks of suitable size. Generally, a cutting machine is used to cut the copper foil.

[0004] A Chinese patent with authorization announcement number CN215790081U discloses an automatic copper foil cutting machine, which includes a frame, a feeding table and a controller arranged on the frame. A cutting assembly is arranged on the feeding table, and the cutting assembly includes a cutting frame, a cutting knife installed on the cutting frame, and a knife pressing assembly driving the cutting knife to reciprocate up and down. The cutting assembly realizes quantitative cutting under the control of the controller. A transmission assembly is arranged at one end of the feeding table close to the cutting assembly. The transmission assembly realizes incremental feeding of the copper foil width under the control of the controller. The fully automated cutting replaces manual measurement by workers, improves cutting accuracy, and can automatically cut a quantitative amount of copper foil laminates.

[0005] The upper cutting knife and the lower cutting knife in the above technical solution are usually arranged in parallel. After long-term cutting, the sides of the cutting knife will be worn to varying degrees, so that the distance between the upper cutting knife and the lower cutting knife increases. When the distance between the upper cutting knife and the lower cutting knife increases, it will affect the cutting effect of the copper foil, which is likely to cause serious curling of the copper foil. Summary of the invention

[0006] The object of the present invention is to provide an automatic copper foil cutting machine, aiming to solve the problem that wear will occur between the upper cutting knife and the lower cutting knife in the automatic copper foil cutting machine in the prior art, which will increase the gap between the upper cutting knife and the lower cutting knife and affect the cutting effect of the copper foil.

[0007] To achieve the above object, the present invention provides the following technical solution: an automatic copper foil cutting machine, comprising: two mirror-image-arranged brackets, characterized in that it also includes: The lower cutting unit is arranged between the two brackets. The lower cutting unit comprises a lower cutting die and a lower blade. The two ends of the lower cutting die are respectively fixed on the two brackets, and the lower blade is arranged on the lower cutting die. The upper cutting unit is arranged between the two brackets and can slide up and down on the brackets. The upper cutting unit includes an upper cutting die and an upper blade. The upper blade is arranged obliquely on the upper cutting die so that one end of the blade is higher than the other end, and the blade is arranged opposite to the blade of the lower blade. The upper cutting die is located at the lower end of the blade of the upper blade and can rotate relative to the bracket. Its rotation axis is perpendicular to the ground. An elastic member is arranged at the other end of the upper cutting die. The elastic member can push the upper cutting die to rotate. When the elastic member is in a natural state, the upper blade on the upper cutting die intersects with the lower blade on the lower cutting die. The hydraulic device is arranged on the bracket and can drive the upper cutting unit to perform lifting and lowering actions.

[0008] A further technical solution of the present invention is that a first slider and a second slider are provided at both ends of the upper cutting die, and slide rails are vertically arranged on the two brackets. The first slider and the second slider slide on the two slide rails respectively, and the first slider is located at the upper cutting die and close to the end where the upper blade and the lower blade are close to each other, and the second slider is located at the other end of the upper cutting die.

[0009] A further technical solution of the present invention is that a connecting piece is provided on the first sliding block, and the connecting piece rotates on the first sliding block via a rotating shaft, and the axis of the rotating shaft is perpendicular to the ground.

[0010] A further technical solution of the present invention is that a cavity is designed inside the second slider, and a protrusion located inside the cavity is provided at one end of the upper cutting die close to the second slider, and the protrusion can slide inside the cavity. The elastic member is arranged inside the cavity, and one end of the elastic member is against the protrusion. When the elastic member is in a natural state, the protrusion is close to one side of the cavity.

[0011] A further technical solution of the present invention is that a resist column is provided in the chamber and extends to the outside of the second slider, one end of the resist column is abutted against an end of the elastic member away from the protrusion, a resist block is provided on the bracket, a slope is provided on the resist block, the resist column abuts against the slope, and when the upper blade moves downward, the resist column is pushed to move into the chamber and compress the elastic member through the guidance of the slope.

[0012] A further technical solution of the present invention is that, in the upper blade, the distance between the lower end of the blade and the blade of the lower blade is smaller than the distance between the other end of the blade of the upper blade and the blade of the lower blade.

[0013] A further technical solution of the present invention is that the distance between the lower end of the upper blade and the blade of the lower blade is 0.1 mm-1 mm, and the distance between the other end of the upper blade and the blade of the lower blade is 1 mm and 10 mm.

[0014] A further technical solution of the present invention is that the protrusions are tightly fitted to the upper and lower inner walls of the chamber.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The upper blade and the lower blade are arranged crosswise, and the intersection is arranged near one end. At the same time, the upper blade is pushed against the lower blade by the elastic member, so as to avoid the gap between the upper blade and the lower blade when cutting the copper foil, thereby avoiding the occurrence of cutting defects caused by the gap between the upper blade and the lower blade.

[0016] 2. By setting the support column and the support block, the pressure of the elastic member on the convex block can be increased, thereby gradually increasing the friction between the upper blade and the lower blade, so that the friction between the two can be kept as stable as possible when cutting the copper foil. This improvement effectively avoids the problems of poor cutting quality and inconsistent blade wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a cutting machine in a specific embodiment of the present invention; Figure 2 It is a schematic diagram of the structure of a cutting mechanism in a specific embodiment of the present invention; Figure 3 It is a front view of a cutting mechanism in a specific embodiment of the present invention; Figure 4 It is a schematic diagram of the coordination structure of the upper cutting unit and the lower cutting unit in a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the connection structure of the first sliding block and the connecting member in a specific embodiment of the present invention; Figure 6 It is a schematic diagram of the installation structure of the second sliding block and the upper cutting die in a specific embodiment of the present invention; Figure 7 It is a schematic diagram of the matching structure of the lower blade and the upper blade in a specific embodiment of the present invention; Figure 8 for Figure 7 A schematic diagram of the structure enlargement at the center A; Fig. 9 It is a schematic diagram of the matching structure of the abutment block and the abutment column in a specific embodiment of the present invention; Fig.10 This is a schematic structural diagram of a specific embodiment of the present invention in which the blade edge is inclined.

[0018] In the figure: 1. unwinding mechanism; 2. cutting mechanism; 21. bracket; 22. upper cutting unit; 221. upper cutting die; 222. upper blade; 223. first slider; 224. second slider; 225. connecting member; 226. chamber; 227. protrusion; 228. elastic member; 23. lower cutting unit; 231. lower cutting die; 232. lower blade; 3. feeding mechanism; 4. slide rail; 5. hydraulic equipment; 6. stop column; 7. stop block; 71. inclined plane. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 10 , the present invention provides the following technical solutions: an automatic copper foil cutting machine, consisting of an unwinding mechanism 1, a cutting mechanism 2 and a feeding mechanism 3. Among them, the cutting mechanism 2 is arranged between the unwinding mechanism 1 and the feeding mechanism 3, forming a smooth operation process. The unwinding mechanism 1 is responsible for smoothly unrolling the rolled copper foil raw material and conveying it to the working area of ​​the cutting mechanism 2. The cutting mechanism 2 ensures that the copper foil can be evenly and accurately divided with its high-precision performance. The copper foil after cutting will fall on the feeding mechanism 3. Subsequently, with the help of robot technology, these cut copper foils will be stacked in an orderly manner, which greatly improves the production efficiency and automation level; At the critical moment when the cutting mechanism 2 performs the cutting operation on the copper foil, in order to ensure that the cutting accuracy is not disturbed, the unwinding mechanism 1 will temporarily stop the conveying of the copper foil. This operation is intended to avoid the cutting error that may be caused by continuous feeding, which is a common technical problem faced by the industry. It is worth noting that through the use of automatic control technology, the coordinated opening and closing between the unwinding mechanism 1 and the cutting mechanism 2 can be maturely realized, that is, the unwinding mechanism 1 can adjust the working state in time according to the cutting requirements. As for the specific implementation plan of this technology, in view of its wide recognition and application, it will not be elaborated here.

[0021] See also Figure 2-Figure 4The cutting mechanism 2 is composed of two symmetrically arranged brackets 21, which are fixedly installed in a vertical posture. Between the two brackets 21, an upper cutting unit 22 and a lower cutting unit 23 are installed, which are arranged in a relative manner. Specifically, the lower cutting unit 23 is fixed on the bracket 21, and the upper cutting unit 22 can slide up and down on the bracket 21. In addition, two hydraulic devices 5 are also configured on the bracket 21. These hydraulic devices 5 are installed on the bracket 21 by screws, and their telescopic ends are connected to the upper cutting unit 22. In this way, the hydraulic device 5 can drive the upper cutting unit 22 to slide up and down smoothly.

[0022] See also Figure 2-Figure 3 In order to ensure that the upper cutter unit 22 can slide smoothly and stably, two vertically arranged slide rails 4 are carefully installed on the bracket 21. The two slide rails 4 are perpendicular to the ground and are tightly fixed on the bracket 21 by screws. The upper cutter unit 22 can slide smoothly along the track of the slide rails 4. Thanks to the precise guiding effect of the slide rails 4, the stability and reliability of the upper cutter unit 22 during the sliding process are greatly improved.

[0023] See also Figure 3-Figure 4 The lower cutting unit 23 is mainly composed of a lower cutting die 231 and a lower blade 232. The lower cutting die 231 is in the form of an L-shaped strip interface, horizontally erected between the two brackets 21, and its two ends are firmly fixed to the brackets 21 by bolt connection or welding technology. The lower blade 232 is placed on the lower cutting die 231 along the length direction of the lower cutting die 231 and is tightly connected to the lower cutting die 231 by bolts. It is worth noting that the blade part of the lower blade 232 after installation is slightly higher than the upper surface of the lower cutting die 231 to ensure the accuracy and efficiency of the cutting operation.

[0024] Please continue reading Figure 3-Figure 4 The upper cutting unit 22 is composed of an upper cutting die 221 and an upper blade 222, wherein the upper blade 222 is installed on the upper cutting die 221 at an inclined angle, that is, one end of the blade is at a higher position than the other end (such as Fig.10 ). Subsequently, the upper blade 222 is firmly fixed on the upper cutting die 221 by tightening the screws. In addition, for ease of use, you can also choose to directly purchase a customized blade with an inclined blade design.

[0025] When the inclined upper blade 222 is used to cut the copper foil, a shear angle of about 1° will naturally be formed between it and the blade of the lower blade 232. It is by utilizing the shear force brought by this shear angle that the copper foil can be effectively cut. At the same time, in order to ensure that the upper cutting unit 22 can move smoothly and accurately, the two ends of the upper cutting die 221 are respectively equipped with a first slider 223 and a second slider 224. Among them, the first slider 223 is arranged on the upper cutting die 221 and is close to the end where the blades of the upper blade 222 and the lower blade 232 are close to each other, while the second slider 224 is located at the other end of the upper cutting die 221. The two sliders slide along the two slide rails 4 respectively, and are connected to the telescopic end of the hydraulic device 5 to realize the transmission of power.

[0026] When the hydraulic device 5 is driven, it can drive the first slider 223 and the second slider 224 to slide smoothly on the slide rail 4. As the two sliders move, the upper cutting die 221 and the upper blade 222 thereon will also move up and down accordingly. It is through this precise up and down movement that the upper blade 222 can accurately press down on the copper foil, thereby completing the cutting operation.

[0027] See also Figure 4-Figure 7 A connecting member 225 is installed on the first slider 223, and the first slider 223 has a rotating shaft. The axis of the rotating shaft is perpendicular to the ground, so that the connecting member 225 can rotate smoothly around it. The connecting member 225 and the upper cutting die 221 can be fixed by screw connection or welding to ensure the stability of the structure. Therefore, the upper cutting die 221 and the upper blade 222 carried by it can flexibly rotate with the rotating shaft as the central axis.

[0028] A chamber 226 is designed inside the second slider 224, and a protrusion 227 is provided at one end of the upper knife die 221 adjacent to the second slider 224. The protrusion 227 extends into the chamber 226 and fits tightly with the upper and lower inner walls of the chamber 226. When the upper knife die 221 rotates around the rotating shaft installed on the first slider 223, the protrusion 227 will slide inside the chamber 226. An elastic member 228 is also installed inside the chamber 226, which can push the protrusion 227 to fit closely to one side of the chamber 226, thereby ensuring that the blades of the upper blade 222 and the lower blade 232 form a cross layout when viewed from a top view.

[0029] Specifically, please refer to Figure 7 and Figure 8It can be clearly seen that the lower end of the upper blade 222 is located on the left side of the lower blade 232, and the straight-line distance between the two is a, where the value of a is between 0.1 mm and 1 mm; and the other end of the upper blade 222 is located on the right side of the lower blade 232, and the straight-line distance between the two is b, where the value of b is between 1 mm and 10 mm. This design not only makes the upper blade 222 and the lower blade 232 appear to be in a cross shape when viewed from above, but also makes the intersection closer to the first slider 223.

[0030] The working principle is as follows: during the process of cutting the copper foil, the hydraulic device 5 drives the upper blade 222 to slowly press down until the blades of the upper blade 222 and the lower blade 232 meet on the side close to the first slider 223, forming a dynamic shearing point. As the upper blade 222 continues to and steadily descends, the shearing point moves along the blade trajectory, thereby achieving effective cutting of the copper foil.

[0031] Furthermore, the continuous downward pressure of the upper blade 222 not only promotes the shearing process, but also prompts the lower blade 232 to drive the upper die 221 to swing slightly through the rotating shaft on the first slider 223. This swinging action causes the protrusion 227 on the upper die 221 to move accordingly in the cavity 226 and compress the built-in elastic member 228.

[0032] When cutting is completed, the upper blade 222 rises and resets under the control of the hydraulic device 5. At this time, the elastic member 228, with its restoring force, helps the upper cutting die 221 return to the initial position, making full preparations for the next cutting operation. This function of the elastic member 228 ensures that the upper blade 222 and the lower blade 232 can always maintain close and stable contact throughout the entire cutting cycle, thereby ensuring the consistency of cutting quality.

[0033] In addition, when the blades are gradually worn out due to long-term use, the gap between the upper blade 222 and the lower blade 232 can be compensated by the elastic member 228 pushing the upper blade 222 to rotate. This effectively prevents the cutting quality problem caused by the excessive gap between the upper blade 222 and the lower blade 232, and ensures the accuracy and reliability of copper foil cutting.

[0034] See also Figure 6 and Fig. 9 A post 6 is designed on the second slider 224, which can penetrate the chamber 226 and extend to the outside of the second slider 224, and can also realize the telescopic sliding function on the second slider 224. The end of the elastic member 228 away from the protrusion 227 is in close contact with one end of the post 6. When the post 6 is pushed into the second slider 224, the elastic member 228 will be compressed accordingly.

[0035] A stopper 7 is mounted on the bracket 21, and the stopper 7 is firmly connected to the bracket 21 by screws. The surface of the stopper 7 is designed with an inclined surface 71, the bottom of the inclined surface 71 is close to the second slider 224, and the top of the inclined surface 71 gradually moves away from the second slider 224. Such a design enables the upper blade 222 to move downward, with the help of the inclined surface 71, to push the stopper 6 to move into the chamber 226 and compress the elastic member 228.

[0036] In this process, the upper die 221 not only applies pressure to one end of the elastic member 228 through the protrusion 227, but also the support column 6 compresses the elastic member 228 from the other end. This means that the support column 6 and the protrusion 227 can synchronously and effectively compress the elastic member 228 in both directions.

[0037] When the lower blade 232 pushes the upper blade 222 to rotate, according to the lever principle, as the intersection of the upper blade 222 and the lower blade 232 is closer to the rotation axis position of the first slider 223, the generated force arm will be shorter, which will increase the friction between the upper blade 222 and the lower blade 232. On the contrary, when the intersection gradually moves away from the rotation axis, the force arm becomes longer, and the friction between the two decreases accordingly. Therefore, during the process of cutting the copper foil, the friction between the upper blade 222 and the lower blade 232 shows a trend of gradually decreasing. This change in friction often leads to uneven quality on both sides of the copper foil cutting edge, and there will also be differences in the degree of wear at both ends of the blade.

[0038] In order to solve this problem, when the upper blade 222 moves downward to cut the copper foil, the elastic member 228 gradually applies pressure to the bump 227 through the interaction between the inclined surface 71 and the abutment 6. This design is intended to gradually increase the friction between the upper blade 222 and the lower blade 232 during the process of cutting the copper foil, so that the friction between the two can be kept as stable as possible when cutting the copper foil. This improvement effectively avoids the problems of poor cutting quality and inconsistent blade wear.

[0039] The feeding mechanism 3 and the unwinding mechanism 1 are both prior art, and their specific structures will not be described in detail.

Claims

1. An automatic copper foil cutting machine, comprising: The two mirror-image brackets (21) are characterized by further comprising: A lower cutting unit (23) is arranged between the two brackets (21), the lower cutting unit (23) comprising a lower cutting die (231) and a lower blade (232), the two ends of the lower cutting die (231) are respectively fixed on the two brackets (21), and the lower blade (232) is arranged on the lower cutting die (231); An upper cutting unit (22) is arranged between the two brackets (21) and can slide up and down on the brackets (21). The upper cutting unit (22) comprises an upper cutting die (221) and an upper blade (222). The upper blade (222) is arranged obliquely on the upper cutting die (221) so that one end of the blade is higher than the other end, and the blade is arranged opposite to the blade of the lower blade (232). The upper cutting die (221) is located at the lower end of the blade of the upper blade (222) and can rotate relative to the bracket (21). Its rotation axis is perpendicular to the ground. An elastic member (228) is arranged at the other end of the upper cutting die (221). The elastic member (228) can push the upper cutting die (221) to rotate. When the elastic member (228) is in a natural state, the upper blade (222) on the upper cutting die (221) and the lower blade (232) on the lower cutting die (231) intersect. The hydraulic device (5) is arranged on the bracket (21) and is capable of driving the upper cutting unit (22) to perform a lifting action.

2. The automatic copper foil cutting machine according to claim 1, characterized in that: A first slider (223) and a second slider (224) are provided at both ends of the upper cutting die (221); slide rails (4) are vertically provided on the two brackets (21); the first slider (223) and the second slider (224) slide on the two slide rails (4) respectively; the first slider (223) is located at one end of the upper cutting die (221) and close to the end where the blades of the upper blade (222) and the lower blade (232) are close to each other; and the second slider (224) is located at the other end of the upper cutting die (221).

3. The automatic copper foil cutting machine according to claim 2, characterized in that: The first sliding block (223) is provided with a connecting piece (225), and the connecting piece (225) rotates on the first sliding block (223) via a rotating shaft, wherein the axis of the rotating shaft is perpendicular to the ground.

4. The automatic copper foil cutting machine according to claim 2, characterized in that: A chamber (226) is designed inside the second slider (224); a protrusion (227) located inside the chamber (226) is provided at one end of the upper die (221) close to the second slider (224); the protrusion (227) is able to slide inside the chamber (226); the elastic member (228) is arranged inside the chamber (226), one end of which is against the protrusion (227); when the elastic member (228) is in a natural state, the protrusion (227) is closely attached to one side of the chamber (226).

5. The automatic copper foil cutting machine according to claim 4, characterized in that: The chamber (226) is provided with a support column (6) extending through the outside of the second slider (224), one end of the support column (6) abuts against one end of the elastic member (228) away from the protrusion (227), the bracket (21) is provided with a support block (7), the support block (7) is provided with an inclined surface (71), the support column (6) abuts against the inclined surface (71), and when the upper blade (222) moves downward, the support column (6) is pushed to move into the chamber (226) and compress the elastic member (228) through the guidance of the inclined surface (71).

6. The automatic copper foil cutting machine according to claim 1, characterized in that: In the upper blade (222), the distance between the lower end of the blade and the blade of the lower blade (232) is smaller than the distance between the other end of the blade of the upper blade (222) and the blade of the lower blade (232).

7. The automatic copper foil cutting machine according to claim 6, characterized in that: The distance between the lower end of the upper blade (222) and the blade of the lower blade (232) is 0.1 mm to 1 mm, and the distance between the other end of the upper blade (222) and the blade of the lower blade (232) is 1 mm to 10 mm.

8. The automatic copper foil cutting machine according to claim 4, characterized in that: The protrusion (227) is tightly fitted with the upper and lower inner walls of the chamber (226).

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