Metal plate head and tail cutting device and method

Abstract

The invention relates to the technical field of metal plate production and manufacturing, in particular to a metal plate head and tail cutting device and method. The cutting mechanism is arranged on the rack and comprises a cutter assembly which can slide relatively, and a blade is arranged on the cutter assembly; the pressing mechanism is arranged above the cutting mechanism and comprises a supporting plate and a pressing plate, a first open groove is formed in the supporting plate, and the blade can relatively move in the first open groove; the conveying mechanism is arranged on the two sides of the cutting mechanism and the pressing mechanism and comprises a roller shaft. The waste conveying mechanism is arranged below the conveying mechanism; the waste cutting mechanisms are arranged at outlets of the waste conveying mechanisms correspondingly and comprise cutters. An inclined plate is connected between the supporting plate and the waste conveying mechanism. The blade extends into the first open groove to cut redundant materials of the metal plate, the metal plate is fixed through movement of the supporting plate towards the pressing plate, fixed-length cutting is achieved through the waste conveying mechanism and the waste cutting mechanism, and the working efficiency of the whole production line is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal plate production and manufacturing, and in particular to a metal plate head and tail cutting device and method. Background Art

[0002] Metal sheets are widely used in many fields such as construction, automobiles, aerospace, home appliance manufacturing, shipbuilding and marine engineering, and mechanical equipment manufacturing. Due to their excellent strength, corrosion resistance, and machinability, they are used to manufacture structural parts, housings, and decorative panels. In the production process, metal sheets often have uneven edges, warping, or excess material after stamping, heat treatment, or other processing steps. These edge defects not only affect the appearance of the product, but may also cause the sheet to be unable to be tightly combined with other components during subsequent assembly, thereby affecting the overall product quality and performance. Therefore, cutting the head and tail of the metal sheet to ensure its precise size and smooth edges is a key step in the production process.

[0003] In the prior art, metal sheet cutting usually uses large equipment, which occupies a large space on the production line. This type of equipment usually fixes the metal sheet first, and then cuts the excess material at the head and tail to ensure that the sheet reaches the standard size before being transported to the next process.

[0004] However, the inventors found in the actual production process that due to the large size of the equipment, the floor space on the entire production line is also large. At present, there is an urgent need for a new device for cutting the head and tail of metal plates, which can meet the requirements of small size and improve production efficiency. Summary of the invention

[0005] In view of at least one of the above technical problems, the present invention provides a device and method for cutting the head and tail of metal plates, which improves production efficiency by automatically cutting the head and tail waste.

[0006] According to a first aspect of the present invention, there is provided a metal sheet head and tail cutting device, comprising: frame; A cutting mechanism is arranged on the frame, and comprises a cutting knife assembly which can be relatively slidably arranged, wherein the cutting direction of the cutting knife assembly is arranged perpendicular to the conveying direction of the metal sheet, and the cutting knife assembly has a blade; A material pressing mechanism is arranged above the cutting mechanism, and comprises a support plate and a pressing plate. A first slot is provided on the support plate, and the blade can move relatively in the first slot. The pressing plate can move relatively closer to or farther away from the support plate, and the metal plate is fixed between the two. A conveying mechanism, arranged on both sides of the cutting mechanism and the pressing mechanism, comprising a roller shaft, the height of the roller shaft being the same as the height of the supporting plate; The waste transport mechanism has two parts and is respectively arranged under the conveying mechanism for conveying the waste; The waste cutting mechanism has the same number as the waste transport mechanism, and is respectively arranged at the outlet of the waste transport mechanism, and includes a cutter for cutting off the waste of a set length; Wherein, an inclined plate is connected between the support plate and the waste conveying mechanism.

[0007] In some embodiments of the present invention, the cutting mechanism also includes a mounting plate that can be relatively slidably arranged on the frame, a first guide assembly arranged between the mounting plate and the frame, and a first driving member for driving the mounting plate to slide, and the cutting knife assembly is fixed on the mounting plate.

[0008] In some embodiments of the present invention, the cutting blade assembly includes a second driving member fixed on the mounting plate, a mounting seat fixedly connected to the second driving member, the blade is fixedly mounted on the mounting seat, and the mounting seat can be relatively close to or away from the metal sheet.

[0009] In some embodiments of the present invention, the support plate includes a fixed plate fixed to the frame and a quick-release plate detachably connected to the frame, and when the blade is reset, it is located between the two quick-release plates.

[0010] In some embodiments of the present invention, the pressing mechanism also includes a third driving member having one end connected to the pressing plate and the other end fixedly connected to the frame, and a second guide assembly having one end fixedly connected to the pressing plate and the other end sliding with the frame.

[0011] In some embodiments of the present invention, a second slot arranged opposite to the first slot is formed on the pressing plate, and when the pressing plate is close to the supporting plate, the blade extends into the second slot.

[0012] In some embodiments of the present invention, the waste transport mechanism includes a conveying member whose length is not less than the length of the inclined plate, baffles arranged on both sides of the conveying direction of the conveying member, the baffle also has a guide plate close to the cutting direction, and a waste roller is provided above the conveying member at the guide plate.

[0013] In some embodiments of the present invention, the waste cutting mechanism includes a base fixed on the frame, a material cutting drive fixedly connected to the base, the cutter connected to the output end of the material cutting drive, and a third guide assembly arranged on the base, and the cutter is arranged at the exit of the waste transport mechanism.

[0014] In some embodiments of the present invention, there is also a positioning edge mechanism, including a slide rail arranged between the two roller shafts, and a positioning plate slidably arranged on the slide rail, and the height of the positioning plate is higher than the height of the roller shaft.

[0015] According to a second aspect of the present invention, there is also provided a method for cutting the head and tail of a metal sheet, comprising the following steps: Convey one end of the metal sheet to the cutting mechanism for edge positioning; The metal sheet is fixed by using a crimping mechanism; Use a blade to cut off the excess material at one end of the metal sheet, and continue to convey the metal sheet so that the metal sheet pushes the waste material to fall into the waste transport mechanism; Convey the other end of the metal sheet to the cutting mechanism for edge positioning; The metal sheet is fixed by using a crimping mechanism; Using a blade to cut off excess material at the other end of the metal sheet, moving the metal sheet back, and using the metal sheet to push the waste material cut off at the other end into another waste transport mechanism; The waste transport mechanism transports the waste to the waste cutting mechanism, and uses a cutter to cut the waste into a set length.

[0016] The beneficial effects of the present invention are as follows: the present invention arranges the cutting knife assembly perpendicular to the conveying direction of the metal sheet and moves in the first slot of the support plate, and cuts the excess material of the metal sheet by extending the blade into the first slot, thereby improving the cutting accuracy and ensuring that the excess material at both ends of the metal sheet is accurately cut; the pressing mechanism fixes the metal sheet by the movement of the support plate toward the pressing plate, thereby ensuring the stability of the metal sheet during the cutting process and avoiding sliding or tilting; the waste transport mechanism and the waste cutting mechanism realize the automatic transportation and fixed-length cutting of the cut waste, reduce manual operation, and improve the automation level of the production line. The present invention ensures the continuity and efficiency of the cutting process and improves the working efficiency of the entire production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the structure of the head and tail cutting device of the metal sheet in the embodiment of the present invention; Figure 2 A top view of a metal sheet head and tail cutting device according to an embodiment of the present invention; Figure 3 It is a schematic structural diagram of a waste material transport mechanism in a metal sheet head and tail cutting device according to an embodiment of the present invention; Figure 4 It is a schematic structural diagram of a waste material cutting mechanism in a metal sheet head and tail cutting device according to an embodiment of the present invention; Figure 5 It is a schematic structural diagram of a cutting mechanism in a head and tail cutting device for metal sheets according to an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a cutting knife assembly in a head and tail cutting device for metal sheets according to an embodiment of the present invention; Figure 7 The head and tail cutting device of the metal sheet in the embodiment of the present invention Figure 2 Sectional view along AA direction; Figure 8 1 is a step diagram of a method for cutting the head and tail of a metal sheet in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] like Figures 1 to 7 The metal sheet head and tail cutting device shown comprises: a frame 1, a cutting mechanism 2, a material pressing mechanism 3, a conveying mechanism 4, a waste transport mechanism 5 and a waste cutting mechanism 6.

[0023] The cutting mechanism 2 is arranged on the frame 1, and includes a cutting knife assembly 21 which can be relatively slidably arranged. The cutting direction of the cutting knife assembly 21 is arranged perpendicular to the conveying direction of the metal sheet. The cutting knife assembly 21 has a blade 21a. Figure 1As shown, the excess material of the metal sheet is cut by the blade 21a. When the metal sheet is conveyed to the cutting mechanism 2, the side to be cut is in the same direction as the movement of the blade 21a.

[0024] The pressing mechanism 3 is arranged above the cutting mechanism 2, and includes a support plate 31 and a pressing plate 32. The support plate 31 is provided with a first slot 31a, and the blade 21a can move relatively in the first slot 31a. The pressing plate 32 can move relatively closer to or farther from the support plate 31, and the metal sheet is fixed between the two. Figure 1 As shown, when the metal sheet is conveyed to the bottom of the pressing mechanism 3, it is located above the support plate 31. After the position to be cut is positioned, the pressing plate 32 approaches the support plate 31, so that the position to be cut is located at one end of the first slot 31a, and the retained portion of the metal sheet is located at the other end of the first slot 31a. The blade 21a passes through the first slot 31a to cut off the waste material.

[0025] The conveying mechanism 4 is arranged on both sides of the cutting mechanism 2 and the pressing mechanism 3, and includes a roller 41, and the height of the roller 41 is the same as that of the supporting plate 31. Figure 1 As shown, both sides of the cutting mechanism 2 and the pressing mechanism 3 are provided with rollers 41, and the metal sheet is supported by the rollers 41. It should be pointed out here that the rollers 41 have many forms, and can be active rollers, driven rollers, or a combination of active rollers and driven rollers.

[0026] There are two waste transport mechanisms 5, which are respectively arranged under the conveying mechanism 4 and are used to transport waste. Figure 1 As shown, the cut waste falls into the waste transport mechanism 5, and the waste is transported out by the waste transport mechanism 5 to avoid excessive waste affecting production efficiency. It should be pointed out here that the waste transport mechanism 5 has many forms, such as belt conveyor, roller conveyor, chute conveyor, etc.

[0027] The waste cutting mechanism 6 has the same number as the waste transport mechanism 5 and is respectively arranged at the exit of the waste transport mechanism 5, and includes a cutter 61 for cutting off the waste of a set length. Figure 1 As shown, the waste can be transported to the outside of the device through the waste transport mechanism 5, and the waste can be cut into uniform lengths for better collection. It should be noted that the waste cutting mechanism 6 has many forms, such as shearing cutting, punching cutting, rotating blade 21a cutting or other structural forms that can be used for cutting.

[0028] Among them, an inclined plate 62 is connected between the support plate 31 and the waste conveying mechanism 4. Figure 1As shown, in order to allow the cut waste to move smoothly into the waste conveying mechanism 4 , an inclined plate 62 is provided between the two, and the cut waste slides into the waste conveying mechanism 4 through the inclined plate 62 .

[0029] The cutting knife assembly 21 is arranged perpendicular to the conveying direction of the metal sheet and moves in the first slot 31a of the support plate 31. The blade 21a extends into the first slot 31a to cut the excess material of the metal sheet, thereby improving the cutting accuracy and ensuring that the excess material at both ends of the metal sheet is accurately cut; the pressing mechanism 3 fixes the metal sheet by moving the support plate 31 toward the pressing plate 32, thereby ensuring the stability of the metal sheet during the cutting process and avoiding sliding or tilting; the waste transport mechanism 5 and the waste cutting mechanism 6 realize the automatic transportation and fixed-length cutting of the cut waste, reduce manual operation, and improve the automation level of the production line. The present invention ensures the continuity and efficiency of the cutting process and improves the work efficiency of the entire production line.

[0030] like Figures 5 to 7 As shown, the cutting mechanism 2 also includes a mounting plate 22 that can be relatively slidably arranged on the frame 1, a first guide assembly 23 arranged between the mounting plate 22 and the frame 1, and a first driving member 24 for driving the mounting plate 22 to slide, and the cutter assembly 21 is fixed on the mounting plate 22. The guide assembly provides an accurate guiding function to avoid the cutter assembly 21 from deflecting or shaking during the sliding process. By using the first driving member 24 to drive the mounting plate 22 to slide, the cutter assembly 21 can be accurately moved to the specified position. It should be pointed out here that the first guide assembly 23 has many forms, which can be a slide rail 71 and a slider, a sliding sleeve and a linear bearing, a slider and a ball screw, or other structural forms that can perform linear guidance. It should also be pointed out that the first driving member 24 and the second driving member 21b, the third driving member 33 and the material cutting driving member 64 described below can also have a variety of forms, which can be a stepping motor, a servo motor, or a pneumatic or other structural forms of driving members.

[0031] In order to make the blade 21a more adaptable to cutting metal sheets of different thicknesses, Figures 5 to 7As shown, the cutter assembly 21 includes a second driving member 21b fixed on the mounting plate 22, a mounting seat 21c fixedly connected to the second driving member 21b, and a blade 21a fixedly mounted on the mounting seat 21c, and the mounting seat 21c can be relatively close to or away from the metal sheet. The second driving member 21b drives the mounting seat 21c to be relatively close to or away from the metal sheet, thereby achieving precise control of the position of the cutter assembly 21. By precisely adjusting the distance between the cutter and the metal sheet, the cutting accuracy can be ensured, and the cutting force can be flexibly adjusted according to the thickness or material of the metal sheet, thereby avoiding excessive or insufficient cutting and improving the cutting quality. The design of the cutter assembly 21 allows the blade 21a to move flexibly with the mounting seat 21c, and adapt to metal sheets of different specifications, thicknesses or materials. Whether it is a thicker material or a thinner material, the design can be flexibly responded to, thereby enhancing the adaptability of the cutting device to different workpieces, thereby improving the versatility and practicality of the device.

[0032] To make the replacement of the blade 21a more convenient, Figure 3 As shown, the support plate 31 includes a fixed plate 31b fixed on the frame 1 and a quick release plate 31c detachably connected to the frame 1. When the blade 21a is reset, it is located between the two quick release plates 31c. Since the support plate 31 adopts the quick release plate 31c design, the blade 21a is located between the two quick release plates 31c when it is reset, which facilitates the operator to quickly remove and replace the blade 21a, making the maintenance process simpler, reducing downtime, and improving the operating efficiency of the equipment. In particular, in a production line where the blade 21a needs to be frequently replaced or maintained, the convenience of operation is greatly improved.

[0033] like Figure 1 , Figure 3As shown, the pressing mechanism 3 also includes a third driving member 33 connected to the pressing plate 32 at one end and fixedly connected to the frame 1 at the other end, and a second guide assembly 34 fixedly connected to the pressing plate 32 at one end and sliding with the frame 1 at the other end. The third driving member 33 can accurately control the movement of the pressing plate 32, so that the pressing plate 32 can be stably lifted or lowered or moved horizontally as needed. Through the precise drive of the third driving member 33, the pressing plate 32 can reliably approach or move away from the metal sheet, ensuring stable and uniform pressure distribution when pressing the material, avoiding the problem of uneven pressing caused by manual adjustment. The second guide assembly 34 ensures that the pressing plate 32 maintains a smooth linear motion during movement, avoiding the displacement or shaking of the pressing plate 32 when pressing the material, and the guide assembly ensures that the pressing plate 32 is always in the correct motion trajectory. It should be pointed out here that the number of the second guide assembly 34 and the third driving member 33 can be increased or decreased according to actual conditions to meet the fixed requirements. It should be pointed out here that the second guide assembly 34 can take many forms, and can be composed of a linear guide rail fixed on the frame 1 and a slider installed on the pressure plate 32, can be composed of one or more parallel cylindrical guide rods and corresponding sliding sleeves or linear bearings, or can be a sliding block along a sliding guide rail fixed on the frame 1, and other structural forms.

[0034] like Figure 7 As shown, the pressing plate 32 is provided with a second slot 32a arranged opposite to the first slot 31a. When the pressing plate 32 is close to the supporting plate 31, the blade 21a extends into the second slot 32a. When the blade 21a can accurately extend into the second slot 32a on the pressing plate 32, the cutting action will be more accurate and stable. The blade 21a moves along the slot to ensure that the cutting line is completely aligned, thereby avoiding skewed or uneven cutting of the material. The blade 21a extends into the second slot 32a through the first slot 31a, which can completely cut off the metal sheet and avoid the situation where the blade 21a does not completely cut through.

[0035] like Figure 3 As shown, the waste transport mechanism 5 includes a conveying member 51 whose length is not less than that of the inclined plate 62, baffles 52 arranged on both sides of the conveying direction of the conveying member 51, and the baffles 52 also have guide plates 53 near the direction of the cutter 61, and waste rollers 54 are also arranged above the conveying member 51 at the guide plate 53. The sufficient length of the conveying member 51 allows the waste to slide down smoothly and be transported, and will not cause waste accumulation or jamming due to the short conveying path, ensuring a smooth waste transportation process. The baffles 52 arranged on both sides of the conveying member 51 effectively prevent the waste from lateral deviation or overflow during the conveying process. The existence of the baffles 52 can ensure that the waste always stays on the conveying path, and on the other hand, it can ensure that the waste will not slide down to the outside of the waste transport mechanism 5 when it slides from the support plate 31 into the waste transport mechanism 5.

[0036] In some embodiments of the present invention, the waste cutting mechanism 6 includes a base 63 fixed on the frame 1, a material cutting drive 64 fixedly connected to the base 63, a cutter 61 connected to the output end of the material cutting drive 64, and a third guide assembly 65 arranged on the base 63, and the cutter 61 is arranged at the outlet of the waste transport mechanism 5.

[0037] In some embodiments of the present invention, there is also a positioning and edge mechanism 7, including a slide rail 71 arranged between two rollers 41, a positioning plate 72 slidably arranged on the slide rail 71, and the height of the positioning plate 72 is higher than the height of the roller 41. The cutter 61 is arranged at the exit of the waste transport mechanism 5, so that the waste can be accurately positioned and fixed when entering the cutting area, ensuring that the cutter 61 can accurately cut the waste. It should be pointed out here that the cutting length of the waste can be set according to the specific situation, and there are many ways to control the length of the waste, which can be sensor detection, a mechanical baffle 52 positioning structure, a roller encoder length control structure or other structures that can control the length.

[0038] According to a second aspect of the present invention, a method for cutting the head and tail of a metal sheet is also provided. Figure 8 As shown in , the following steps are included: S10: conveying one end of the metal sheet to the cutting mechanism 2 for edge positioning; S20: Fixing the metal sheet using a crimping mechanism; S30: using the blade 21a to cut off the excess material at one end of the metal sheet, and continuing to convey the metal sheet, so that the metal sheet pushes the waste material to fall into the waste transport mechanism 5; S40: conveying the other end of the metal sheet to the cutting mechanism 2 for edge positioning; S50: Fixing the metal sheet using a crimping mechanism; S60: using the blade 21a to cut off the excess material at the other end of the metal sheet, moving the metal sheet backward, and using the metal sheet to push the waste material cut off at the other end into another waste material transport mechanism 5; S70: The waste transport mechanism 5 transports the waste to the waste cutting mechanism 6, and the cutter 61 cuts the waste into a set length.

[0039] The device of the present invention can be used alone or connected to other devices to form a production line. The specific method steps are not repeated here. The cut waste is automatically pushed to the waste transport mechanism 5 through the metal sheet. The whole process does not require manual intervention, which improves the automation and efficiency of the production line. The waste at both ends of the metal sheet is transported and cut off by two waste transport mechanisms 5, which ensures the continuity of waste treatment and avoids waste accumulation or untimely treatment.

[0040] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A metal sheet head and tail cutting device, characterized in that: include: frame; A cutting mechanism is arranged on the frame, and comprises a cutting knife assembly which can be relatively slidably arranged, wherein the cutting direction of the cutting knife assembly is arranged perpendicular to the conveying direction of the metal sheet, and the cutting knife assembly has a blade; A material pressing mechanism is arranged above the cutting mechanism, and comprises a support plate and a pressing plate. A first slot is provided on the support plate, and the blade can move relatively in the first slot. The pressing plate can move relatively closer to or farther away from the support plate, and the metal plate is fixed between the two. A conveying mechanism, arranged on both sides of the cutting mechanism and the pressing mechanism, comprising a roller shaft, the height of the roller shaft being the same as the height of the supporting plate; The waste transport mechanism has two parts and is respectively arranged under the conveying mechanism for conveying the waste; The waste cutting mechanism has the same number as the waste transport mechanism, and is respectively arranged at the outlet of the waste transport mechanism, and includes a cutter for cutting off the waste of a set length; Wherein, an inclined plate is connected between the support plate and the waste conveying mechanism.

2. The metal sheet head and tail cutting device according to claim 1, characterized in that: The cutting mechanism also includes a mounting plate that can be relatively slidably arranged on the frame, a first guide assembly arranged between the mounting plate and the frame, and a first driving member for driving the mounting plate to slide, and the cutting blade assembly is fixed on the mounting plate.

3. The metal sheet head and tail cutting device according to claim 2, characterized in that: The cutter assembly includes a second driving member fixed on the mounting plate, a mounting seat fixedly connected to the second driving member, the blade is fixedly mounted on the mounting seat, and the mounting seat can be relatively close to or away from the metal plate.

4. The metal sheet head and tail cutting device according to claim 1, characterized in that: The support plate comprises a fixed plate fixed on the frame and a quick-release plate detachably connected to the frame. When the blade is reset, it is located between the two quick-release plates.

5. The metal sheet head and tail cutting device according to claim 1, characterized in that: The pressing mechanism also includes a third driving member with one end connected to the pressing plate and the other end fixedly connected to the frame, and a second guiding component with one end fixedly connected to the pressing plate and the other end slidingly connected to the frame.

6. The metal sheet head and tail cutting device according to claim 1, characterized in that: The pressing plate is provided with a second slot which is arranged opposite to the first slot. When the pressing plate is close to the supporting plate, the blade extends into the second slot.

7. The metal sheet head and tail cutting device according to claim 1, characterized in that: The waste transport mechanism includes a conveying member with a length not less than that of the inclined plate, baffles arranged on both sides of the conveying direction of the conveying member, the baffles also have guide plates close to the cutter direction, and waste rollers are also provided above the conveying member at the guide plates.

8. The metal sheet head and tail cutting device according to claim 1, characterized in that: The waste cutting mechanism includes a base fixed on the frame, a material cutting drive fixedly connected to the base, the cutter connected to the output end of the material cutting drive, and a third guide assembly arranged on the base, and the cutter is arranged at the exit of the waste transport mechanism.

9. The metal sheet head and tail cutting device according to claim 1, characterized in that: It also has a positioning and edging mechanism, which includes a slide rail arranged between the two roller shafts, and a positioning plate slidably arranged on the slide rail, and the height of the positioning plate is higher than the height of the roller shaft.

10. A method for cutting the head and tail of a metal sheet, characterized in that: Using the metal sheet head and tail cutting device as described in any one of claims 1 to 9 comprises the following steps: Convey one end of the metal sheet to the cutting mechanism for edge positioning; The metal sheet is fixed by using a crimping mechanism; Use a blade to cut off the excess material at one end of the metal sheet, and continue to convey the metal sheet so that the metal sheet pushes the waste material to fall into the waste transport mechanism; Convey the other end of the metal sheet to the cutting mechanism for edge positioning; The metal sheet is fixed by using a crimping mechanism; Using a blade to cut off excess material at the other end of the metal sheet, moving the metal sheet back, and using the metal sheet to push the waste material cut off at the other end into another waste transport mechanism; The waste transport mechanism transports the waste to the waste cutting mechanism, and uses a cutter to cut the waste into a set length.

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