Automatic cutting and feeding machine for copper foil conductive sheet

Abstract

The present application belongs to the technical field of coiled material shearing, and particularly relates to a copper foil conductive sheet automatic cutting feeder, which comprises a cutting flat laying assembly, a cutting driving assembly, an elastic limiting assembly, a cutting assembly, a feeding assembly, a rotary air distribution valve, a rack and a tensioning assembly, the tensioning assembly is arranged on the rack, both sides of the rack are provided with mounting seats, and the cutting flat laying assembly and the cutting driving assembly are arranged on the mounting seats. The rotary air distribution of the rotary air distribution valve can drive and control the air cylinder and the air motor in sequence, so that the device automatically and periodically completes the three actions of cutting, tool retracting and feeding. The elastic limiting assembly is also provided, the elastic limiting assembly is matched with the elastic tooth and the arc-shaped inclined tooth, so that the limiting shell can only be statically arranged at a specific angle, and the single feeding angle control of the hollow cylinder can be realized in the case that the precision of the air motor is insufficient.

Description

Technical Field

[0001] This invention belongs to the field of roll shearing technology, specifically referring to an automatic cutting and feeding machine for copper foil conductive sheets. Background Technology

[0002] Cutting independent thin sheets from flexible materials such as copper foil using cutting tools has been successfully implemented in some existing technologies. For example, CN112757351B proposes a high-impact shearing phenolic paper-based copper foil laminate edge cutting device, and CN116494314A proposes a process to improve the deformation and indentation of punched copper foil. These technologies aim to improve the stability and indentation problems during material cutting, respectively. However, their basic process is still independent cutting, which is difficult to meet the production efficiency requirements for industrial production scenarios.

[0003] In conventional solutions, the feeding and cutting of the substrate are controlled independently, relying on an electronic control system to achieve sequential actions. However, at high speeds or in the event of a program malfunction, the two movements may conflict, leading to tearing of the substrate.

[0004] Moreover, the precision requirements for copper foil cutting are relatively high. Therefore, the conventional approach is to use a servo motor in conjunction with a position encoder for closed-loop control to achieve high positioning accuracy and repeatability. However, this approach would undoubtedly increase the production and debugging costs of the equipment significantly, which would not be conducive to cost reduction and efficiency improvement for users. Summary of the Invention

[0005] To address the above issues and overcome the shortcomings of existing technologies, this invention provides an automatic cutting and feeding machine for copper foil conductive sheets. This solution integrates substrate cutting and feeding into the same mechanism, utilizing the inherent limitations of mechanical mechanisms to completely eliminate the problem of the substrate potentially being cut and torn during movement. Based on the core principles of simplified structure, cost reduction, and efficiency improvement, this solution uses a rotary air distribution valve to sequentially drive and control the cylinder and pneumatic motor, thereby enabling the device to automatically and periodically complete the three actions of cutting, blade retraction, and feeding.

[0006] Since the precision of pneumatic motors is lower than that of electric motors, in order to compensate for this deficiency, this invention proposes an elastic limiting component. Through the elastic cooperation of elastic teeth and arc-shaped helical teeth, the limiting shell can only remain stationary at a specific angle, thereby achieving single-feed angle control of the hollow roller when the precision of the pneumatic motor is insufficient.

[0007] The technical solution adopted by this invention is as follows: This invention proposes an automatic cutting and feeding machine for copper foil conductive sheets, including a cutting and laying assembly, a cutting drive assembly, an elastic limiting assembly, a cutting assembly, a feeding assembly, a rotary air distribution valve, a frame, and a tensioning assembly. The tensioning assembly is mounted on the frame, and mounting seats are provided on both sides of the frame. The cutting and laying assembly and the cutting drive assembly are mounted on the mounting seats. The cutting and laying assembly rotates relative to the cutting drive assembly, and the cutting assembly is engaged and slidably disposed in the cutting drive assembly. The feeding assembly is located below the cutting and laying assembly and the cutting drive assembly. When the cutting and laying assembly is stationary, the cutting assembly can cut the workpiece.

[0008] The elastic limiting component is located between the cutting and tiling component and the cutting drive component. The rotary air distribution valve is located on the outside of the mounting base. The rotary air distribution valve can drive the cutting drive component and the feed component in sequence.

[0009] Furthermore, the cutting and tiling assembly includes a supporting shaft, a mounting bearing, and a hollow roller. The mounting bearing is disposed between the supporting shaft and the mounting base, and one end of the hollow roller is fixedly connected to the supporting shaft.

[0010] The hollow roller has a ring array of cutting grooves on its outer wall, and the outer surface of the hollow roller has a rubber layer that does not cover the cutting grooves.

[0011] Furthermore, the cutting drive assembly includes an outer support bearing and a cylinder. The cylinder is disposed in the mounting base, and the outer support bearing is disposed between the cylinder and the hollow drum. The outer support bearing and the mounting bearing are respectively located at both ends of the hollow drum and support the rotation of the hollow drum.

[0012] Preferably, the cutting drive assembly further includes a hollow crossbeam and a sliding rack, a push rod is provided in the cylinder for telescopic sliding, the ends of the sliding rack and the push rod are connected, the sliding rack is engaged and slidably disposed in the hollow crossbeam, and one end of the hollow crossbeam is fixed to the elastic limiting assembly.

[0013] Furthermore, the cutting assembly includes a lower cutter and an upper cutter. The lower cutter is fixed to the side of the mounting base. The lower cutter has an array of slotted cutting edges corresponding to the cutting groove. The upper cutter has a guide post. The guide post is engaged and slidably disposed in the hollow crossbeam. The sliding rack has an array of ramps. The top of the guide post has a guide ramp that matches the ramp.

[0014] Preferably, the cutting assembly further includes a return spring, which is disposed between the upper cutter and the hollow crossbeam, and the bottom of the upper cutter is provided with a grooved blade that matches the grooved cutting edge.

[0015] Furthermore, the elastic limiting component includes an inner support bearing, a stationary disk, and a limiting shell. The inner support bearing is disposed between the stationary disk and the support shaft. One end of the hollow crossbeam is fixed to the stationary disk, and the limiting shell is fixed to the inner wall of the hollow roller.

[0016] Preferably, the stationary disk is provided with a ring of evenly distributed limiting posts, each of which has elastic teeth. The inside of the limiting shell is provided with a ring of evenly distributed arc-shaped oblique teeth, the number of which corresponds to the number of cutting grooves.

[0017] Furthermore, the feeding assembly includes a pneumatic motor and a drive gear, wherein the pneumatic motor is disposed in the mounting base and the drive gear is disposed on the output shaft of the pneumatic motor;

[0018] Furthermore, the air inlet of the rotary valve is connected to the air pump, and the three exhaust ports of the rotary valve are respectively connected to the front connector of the cylinder, the rear connector of the cylinder, and the pneumatic motor. The rotary valve has one and only one exhaust port that is connected to the air inlet.

[0019] Preferably, the feed assembly further includes a feed roller and a driven gear. The feed roller is rotatably mounted in the mounting base. The surface of the feed roller is provided with an anti-slip coating. The feed roller and the rubber layer are in rolling contact. The driven gear is mounted on the feed roller and meshes with the drive gear.

[0020] Furthermore, the tensioning assembly includes a roller seat and a tensioning roller, the roller seat being mounted on the frame and disposed within the tensioning roller.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows:

[0022] (1) By rotating the air distribution valve, the cylinder and pneumatic motor can be driven and controlled in sequence, so that the device can automatically and periodically complete the three actions of cutting, retracting the blade and feeding.

[0023] (2) The two ends of the hollow roller are rotated and supported by external support bearings and mounting bearings respectively; the two ends of the hollow crossbeam are supported by stationary discs and sliding racks respectively. The stationary discs restrict the lateral movement of the hollow crossbeams, and the push rods and sliding racks restrict the rotation of the hollow crossbeams. Therefore, the hollow crossbeams are in a stationary state.

[0024] (3) The grooved blade can pass through the cutting groove and form a fit with the grooved cutting edge to efficiently cut the target part from the copper foil substrate. Through the continuous drive of the rotary air distribution valve and the array setting of the upper tool, the technical effect of high-efficiency processing can be achieved through a simple and compact structural design.

[0025] (4) The elastic limit component will automatically reset to a specific angle when stationary. Based on the automatic angle calibration function of the elastic limit component, the rotation accuracy requirements of the pneumatic motor can be greatly reduced, thereby achieving the technical objective of controlling the rotation angle of the hollow drum without using a motor and encoder.

[0026] (5) The rotary air distribution valve can not only achieve periodic driving of each process through a simple structure, but also can be combined with the elastic limit component to achieve precise control of the single rotation angle of the hollow drum, thus solving the technical problem that traditional rotary control requires a motor and position encoder to achieve precise angle control.

[0027] (6) Through the contact and rolling between the feed roller and the rubber layer, the copper foil between the rubber layer and the lower cutter can remain flat whether the hollow roller is fed forward or rotated slightly. Attached Figure Description

[0028] Figure 1 This is a perspective view of an automatic cutting and feeding machine for copper foil conductive sheets proposed in this invention;

[0029] Figure 2 This is a front view of an automatic copper foil conductive sheet cutting and feeding machine proposed in this invention;

[0030] Figure 3 This is a left view of an automatic copper foil conductive sheet cutting and feeding machine proposed in this invention;

[0031] Figure 4 for Figure 3 A cross-sectional view along section line AA;

[0032] Figure 5 for Figure 4 A cross-sectional view along the cutting line BB;

[0033] Figure 6 This is an exploded structural diagram of an automatic cutting and feeding machine for copper foil conductive sheets proposed in this invention.

[0034] Figure 7 for Figure 4 A magnified view of a section at point I;

[0035] Figure 8 for Figure 4 Enlarged view of a section at point II;

[0036] Figure 9 for Figure 5 Enlarged view of a section at point III;

[0037] Figure 10 for Figure 6 Enlarged view of a section at point IV;

[0038] Figure 11 This is a schematic diagram showing the connection between the rotary valve and the cylinder and the pneumatic motor.

[0039] The components include: 1. Cutting and tiling assembly; 2. Cutting drive assembly; 3. Elastic limit assembly; 4. Cutting assembly; 5. Feed assembly; 6. Rotary air distribution valve; 7. Frame; 8. Tensioning assembly; 11. Support shaft; 12. Mounting bearing; 13. Hollow roller; 21. Outer support bearing; 22. Cylinder; 23. Hollow crossbeam; 24. Sliding rack; 31. Inner support bearing; 32. Stationary disc; 33. Limiting shell; 41. Lower cutter; 42. Upper... 43. Cutting tool, 51. Return spring, 52. Feed roller, 53. Driven gear, 54. Pneumatic motor, 71. Drive gear, 81. Mounting base, 82. Roller seat, 83. Tensioning roller, 131. Cutting groove, 132. Rubber layer, 221. Push rod, 241. Slope, 321. Limiting post, 322. Elastic tooth, 331. Arc-shaped helical tooth, 411. Groove-shaped cutting edge, 421. Guide post, 422. Guide slope, 423. Groove-shaped blade.

[0040] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] like Figures 1-10As shown, this invention proposes an automatic cutting and feeding machine for copper foil conductive sheets, including a cutting and laying assembly 1, a cutting drive assembly 2, an elastic limiting assembly 3, a cutting assembly 4, a feeding assembly 5, a rotary air distribution valve 6, a frame 7, and a tensioning assembly 8. The tensioning assembly 8 is mounted on the frame 7, and mounting seats 71 are provided on both sides of the frame 7. The cutting and laying assembly 1 and the cutting drive assembly 2 are mounted on the mounting seats 71. The cutting and laying assembly 1 rotates relative to the cutting drive assembly 2. The cutting assembly 4 is engaged and slidably disposed in the cutting drive assembly 2. The feeding assembly 5 is located below the cutting and laying assembly 1 and the cutting drive assembly 2. When the cutting and laying assembly 1 is stationary, the workpiece can be cut by the cutting assembly 4.

[0044] By rotating the air distribution valve 6, the cylinder 22 and the pneumatic motor 53 can be driven and controlled sequentially, so that the device can automatically and periodically complete the three actions of cutting, retracting the blade, and feeding.

[0045] The elastic limiting component 3 is located between the cutting and tiling component 1 and the cutting drive component 2. The rotary air distribution valve 6 is located on the outside of the mounting base 71. The cutting drive component 2 and the feed component 5 can be driven sequentially by rotating the air distribution valve 6.

[0046] The cutting and tiling assembly 1 includes a support shaft 11, a mounting bearing 12, and a hollow roller 13. The mounting bearing 12 is located between the support shaft 11 and the mounting base 71, and one end of the hollow roller 13 is fixedly connected to the support shaft 11.

[0047] The hollow roller 13 has a ring array of cutting grooves 131 on its outer wall, and a rubber layer 132 that does not cover the cutting grooves 131 is provided on the outer surface of the hollow roller 13.

[0048] The cutting drive assembly 2 includes an outer support bearing 21 and a cylinder 22. The cylinder 22 is located in the mounting base 71, and the outer support bearing 21 is located between the cylinder 22 and the hollow drum 13. The outer support bearing 21 and the mounting bearing 12 are located at the two ends of the hollow drum 13 and support the rotation of the hollow drum 13.

[0049] The cutting drive assembly 2 also includes a hollow crossbeam 23 and a sliding rack 24. A push rod 221 is provided in the cylinder 22 for telescopic sliding. The ends of the sliding rack 24 and the push rod 221 are connected. The sliding rack 24 is engaged and slidably disposed in the hollow crossbeam 23. One end of the hollow crossbeam 23 is fixed to the elastic limiting assembly 3.

[0050] The hollow roller 13 is rotated and supported at both ends by the outer support bearing 21 and the mounting bearing 12, respectively; the hollow crossbeam 23 is supported at both ends by the stationary disk 32 and the sliding rack 24, respectively. The stationary disk 32 restricts the lateral movement of the hollow crossbeam 23, and the push rod 221 and the sliding rack 24 restrict the rotation of the hollow crossbeam 23. Therefore, the hollow crossbeam 23 is in a stationary state.

[0051] The cutting assembly 4 includes a lower cutter 41 and an upper cutter 42. The lower cutter 41 is fixed to the side of the mounting base 71. The lower cutter 41 is provided with an array of groove-shaped cutting edges 411 corresponding to the cutting groove 131. The upper cutter 42 is provided with a guide post 421. The guide post 421 is engaged and slidably disposed in the hollow crossbeam 23. The sliding rack 24 is provided with an array of ramp portions 241. The top of the guide post 421 is provided with a guide ramp 422 that matches the ramp portion 241.

[0052] The grooved blade 423 can pass through the cutting groove 131 and cooperate with the grooved cutting edge 411 to efficiently cut the target part from the copper foil substrate. Through the continuous drive of the rotary air distribution valve 6 and the array setting of the upper cutting tool 42, the technical effect of high-efficiency processing can be achieved through a simple and compact structural design.

[0053] The cutting assembly 4 also includes a return spring 43, which is located between the upper cutter 42 and the hollow crossbeam 23. The bottom of the upper cutter 42 is provided with a grooved blade 423 that matches the grooved blade edge 411.

[0054] The elastic limiting component 3 includes an inner support bearing 31, a stationary disk 32, and a limiting shell 33. The inner support bearing 31 is located between the stationary disk 32 and the support shaft 11. One end of the hollow crossbeam 23 is fixed to the stationary disk 32, and the limiting shell 33 is fixed to the inner wall of the hollow roller 13.

[0055] The stationary disk 32 is provided with a ring of limiting posts 321, and the limiting posts 321 are provided with elastic teeth 322. The inside of the limiting shell 33 is provided with a ring of arc-shaped oblique teeth 331, and the number of arc-shaped oblique teeth 331 corresponds to the number of cutting grooves 131.

[0056] The elastic limit component 3 will automatically reset to a specific angle when stationary. Based on the automatic angle calibration function of the elastic limit component 3, the rotation accuracy requirements of the pneumatic motor 53 can be greatly reduced, thereby achieving the technical objective of controlling the rotation angle of the hollow roller 13 without using a motor and encoder.

[0057] The feed assembly 5 includes a pneumatic motor 53 and a drive gear 54. The pneumatic motor 53 is located in the mounting base 71, and the drive gear 54 is located on the output shaft of the pneumatic motor 53.

[0058] Through the contact and rolling between the feed roller 51 and the rubber layer 132, the copper foil located between the rubber layer 132 and the lower cutter 41 can remain flat, whether the hollow roller 13 is fed forward or rotated slightly for positioning.

[0059] The air inlet of the rotary valve 6 is connected to the air pump, and the three exhaust ports of the rotary valve 6 are respectively connected to the front connector of the cylinder 22, the rear connector of the cylinder 22 and the pneumatic motor 53. The rotary valve 6 has one exhaust port that is connected to the air inlet.

[0060] The rotary air distribution valve 6 can not only achieve periodic driving of each process through a simple structure, but also, when combined with the elastic limit component 3, can achieve precise control of the single rotation angle of the hollow roller 13, thus solving the technical problem that traditional rotary control requires a motor and position encoder to achieve precise angle control.

[0061] The feed assembly 5 also includes a feed roller 51 and a driven gear 52. The feed roller 51 is rotatably mounted in the mounting base 71. The surface of the feed roller 51 is provided with an anti-slip coating. The feed roller 51 and the rubber layer 132 are in rolling contact. The driven gear 52 is mounted on the feed roller 51. The driven gear 52 and the drive gear 54 mesh and transmit power.

[0062] The tensioning assembly 8 includes a roller seat 81 and a tensioning roller 82. The roller seat 81 is mounted on the frame 7 and is located within the tensioning roller 82.

[0063] like Figure 11 As shown, A, B, and C represent the pneumatic motor 53, the rotary valve 6, and the cylinder 22, respectively. When the center joint of the rotary valve 6 rotates, it will sequentially connect with the three independent chambers. When the air inlet of the rotary valve 6 is connected to the rear end of the cylinder 22 through the exhaust port and pipe, the gas will push the push rod 221 to extend. When the air inlet of the rotary valve 6 is connected to the front end of the cylinder 22 through the exhaust port and pipe, the gas will push the push rod 221 to retract. When the air inlet of the rotary valve 6 is connected to the pneumatic motor 53 through the exhaust port and pipe, the gas will drive the pneumatic motor 53 to rotate.

[0064] In practical use, the user first needs to unfold the rolled copper foil substrate, pass it around multiple rollers in sequence, and place it between the rubber layer 132 and the feed roller 51. Since the surface of the feed roller 51 and the rubber layer 132 are both elastic materials, although the middle position of the rubber layer 132 and the feed roller 51 is separated by copper foil, the contact at both ends is sufficient to maintain the rolling connection between the two.

[0065] The hollow roller 13 is rotated and supported at both ends by the outer support bearing 21 and the mounting bearing 12, respectively; the hollow crossbeam 23 is supported at both ends by the stationary disk 32 and the sliding rack 24, respectively. The stationary disk 32 restricts the lateral movement of the hollow crossbeam 23, and the push rod 221 and the sliding rack 24 restrict the rotation of the hollow crossbeam 23. Therefore, the hollow crossbeam 23 is in a stationary state.

[0066] Air is supplied to the rotary valve 6 by an air pump. When the air inlet of the rotary valve 6 rotates to an angle that is in contact with the pneumatic motor 53, the pneumatic motor 53 drives the feed roller 51 to rotate through the drive gear 54 and the driven gear 52. Then, the hollow roller 13 is driven to rotate through the rolling contact between the feed roller 51 and the rubber layer 132. The duration of this stage is just enough to make the rotation angle of the hollow roller 13 slightly greater than one unit angle. Then the air inlet of the rotary valve 6 rotates to an angle that is in contact with the rear end of the cylinder 22.

[0067] After the pneumatic motor 53 loses power, the limiting shell 33 will rotate slightly under the elastic force of the elastic tooth 322 until the elastic tooth 322 just abuts against the root of the arc-shaped helical tooth 331. Therefore, even if the active rotation angle of the hollow roller 13 is slightly greater than the standard value, the hollow roller 13 will automatically return to the target angle.

[0068] The gas in the rotary valve 6 enters the rear chamber of the cylinder 22 and pushes the push rod 221 to extend. At the same time, it pushes the sliding rack 24 to slide along the hollow crossbeam 23. Through the squeezing of the ramp 241 on the guide ramp 422, each upper cutter 42 can be pushed to move downward synchronously.

[0069] After passing through the cutting groove 131, the grooved blade 423 cooperates with the grooved cutting edge 411 to cut the copper foil located between the rubber layer 132 and the lower blade 41.

[0070] Then, the air inlet of the rotating air distribution valve 6 is rotated to an angle that is in communication with the front end of the cylinder 22. The gas in the rotating air distribution valve 6 enters the front chamber of the cylinder 22 and pushes the push rod 221 to retract. At the same time, it pushes the sliding rack 24 to slide and reset along the hollow crossbeam 23. At this time, the upper cutter 42 will also reset and rise under the elastic force of the reset spring 43 until the grooved blade 423 is completely retracted into the hollow roller 13.

[0071] By rotating the air distribution valve 6, the cylinder 22 and the pneumatic motor 53 can be driven and controlled sequentially, so that the device can automatically and periodically complete the three actions of cutting, retracting the blade, and feeding.

[0072] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0073] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An automatic cutting and feeding machine for copper foil conductive sheets, comprising a frame (7) and a tensioning assembly (8), wherein the tensioning assembly (8) is disposed on the frame (7), and mounting seats (71) are provided on both sides of the frame (7), characterized in that: Also includes: The cutting and tiling assembly (1), the cutting drive assembly (2), the cutting assembly (4), and the feeding assembly (5) are provided on the mounting base (71). The cutting and tiling assembly (1) rotates relative to the cutting drive assembly (2). The cutting assembly (4) is engaged and slidably disposed in the cutting drive assembly (2). The feeding assembly (5) is located below the cutting and tiling assembly (1) and the cutting drive assembly (2). When the cutting and tiling assembly (1) is stationary, the workpiece can be cut by the cutting assembly (4). The elastic limiting component (3) and the rotary air distribution valve (6) are provided. The elastic limiting component (3) is located between the cutting and tiling component (1) and the cutting drive component (2). The rotary air distribution valve (6) is located on the outside of the mounting base (71). The rotary air distribution valve (6) can drive the cutting drive component (2) and the feed component (5) in sequence. The cutting and tiling assembly (1) includes a support shaft (11), a mounting bearing (12) and a hollow roller (13). The outer wall of the hollow roller (13) is provided with a ring array of cutting grooves (131), and the outer surface of the hollow roller (13) is provided with a rubber layer (132) that does not cover the cutting grooves (131). The cutting drive assembly (2) includes an outer support bearing (21) and a cylinder (22); The cutting drive assembly (2) also includes a hollow crossbeam (23) and a sliding rack (24). A push rod (221) is provided in the cylinder (22) for telescopic sliding. The ends of the sliding rack (24) and the push rod (221) are connected. The sliding rack (24) is engaged and slidably disposed in the hollow crossbeam (23). One end of the hollow crossbeam (23) is fixed to the elastic limiting assembly (3). The cutting assembly (4) includes a lower cutter (41) and an upper cutter (42). The lower cutter (41) is fixed to the side of the mounting base (71). The lower cutter (41) is provided with an array of groove-shaped cutting edges (411) corresponding to the cutting groove (131). The upper cutter (42) is provided with a guide post (421). The guide post (421) is engaged and slidably disposed in the hollow crossbeam (23). The sliding rack (24) is provided with an array of ramps (241). The top of the guide post (421) is provided with a guide ramp (422) that matches the ramps (241). The feed assembly (5) includes a pneumatic motor (53) and a drive gear (54). The air inlet of the rotary valve (6) is connected to the air pump, and the three exhaust ports of the rotary valve (6) are respectively connected to the front connector of the cylinder (22), the rear connector of the cylinder (22) and the pneumatic motor (53). The rotary valve (6) has only one exhaust port that is connected to the air inlet.

2. The automatic cutting and feeding machine for copper foil conductive sheets according to claim 1, characterized in that: The mounting bearing (12) is located between the support shaft (11) and the mounting base (71), and one end of the hollow roller (13) is fixedly connected to the support shaft (11).

3. The automatic cutting and feeding machine for copper foil conductive sheets according to claim 2, characterized in that: The cylinder (22) is located in the mounting base (71), and the outer support bearing (21) is located between the cylinder (22) and the hollow drum (13). The outer support bearing (21) and the mounting bearing (12) are located at both ends of the hollow drum (13) and support the rotation of the hollow drum (13).

4. The automatic cutting and feeding machine for copper foil conductive sheets according to claim 3, characterized in that: The cutting assembly (4) also includes a return spring (43), which is located between the upper cutter (42) and the hollow crossbeam (23). The bottom of the upper cutter (42) is provided with a grooved blade (423) that matches the grooved blade edge (411).

5. The automatic cutting and feeding machine for copper foil conductive sheets according to claim 4, characterized in that: The elastic limiting component (3) includes an inner support bearing (31), a stationary disk (32) and a limiting shell (33). The inner support bearing (31) is located between the stationary disk (32) and the support shaft (11). One end of the hollow crossbeam (23) is fixed to the stationary disk (32), and the limiting shell (33) is fixed to the inner wall of the hollow roller (13). The stationary disk (32) is provided with a ring of limiting posts (321), and the limiting posts (321) are provided with elastic teeth (322). The inside of the limiting shell (33) is provided with a ring of arc-shaped oblique teeth (331), and the number of the arc-shaped oblique teeth (331) corresponds to the number of the cutting grooves (131).

6. The automatic cutting and feeding machine for copper foil conductive sheets according to claim 5, characterized in that: The pneumatic motor (53) is located in the mounting base (71), and the drive gear (54) is located on the output shaft of the pneumatic motor (53).

7. The automatic cutting and feeding machine for copper foil conductive sheets according to claim 6, characterized in that: The feed assembly (5) further includes a feed roller (51) and a driven gear (52). The feed roller (51) is rotatably mounted in the mounting base (71). The surface of the feed roller (51) is provided with an anti-slip coating. The feed roller (51) and the rubber layer (132) are in rolling contact. The driven gear (52) is mounted on the feed roller (51). The driven gear (52) and the drive gear (54) mesh and transmit power.

8. The automatic cutting and feeding machine for copper foil conductive sheets according to claim 7, characterized in that: The tensioning assembly (8) includes a roller seat (81) and a tensioning roller (82). The roller seat (81) is located on the frame (7) and is located in the tensioning roller (82).

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