CCD vision-guided precise cutting five-punching device

Abstract

The application discloses a kind of five continuous punch hole equipment with CCD visual guidance precision cutting, including machine table, and the uncoiling part, punching part and cutting part sequentially arranged along material conveying direction, machine table includes pedestal and support frame, support frame is fixed on the top of pedestal, support frame has transverse support beam and vertical support beam;Punching part includes five groups of independent driving servo punch mechanism, each group of servo punch mechanism includes servo motor, screw device and stamping die, stamping die is fixed on support frame, a plurality of foolproof pins are provided on stamping die, the distance of corresponding foolproof pins of five servo punch mechanisms is different, double-roller section difference part is provided between punching part and cutting part, cutting part includes CCD visual detection device, half cutting knife device and coiling part;Plate material passes through five groups of servo punch mechanism in turn, five groups of stamping die independently set interval along product hole arrangement, can be synchronized or alternately act to make all characteristic hole processing be completed once.

Description

Technical Field

[0001] This invention belongs to the technical field of precision machining and automation equipment, and specifically relates to a five-hole punching machine with CCD vision guidance for precise cutting. Background Technology

[0002] Flexible printed circuit boards (FPCs), as an indispensable core component in modern electronic products, have their manufacturing process precision and efficiency directly impacting the quality and production capacity of the final product. In the material preparation process for FPCs, the punching and cutting of the protective film are crucial steps. As electronic products become thinner, smaller, and more integrated, customer demands for FPCs are increasing. The length of a single product often reaches 2 meters or even longer, and the products require punching various holes of different features and specifications, posing a significant challenge to the processing capabilities of punching equipment.

[0003] Currently, most LPF continuous punching machines on the market use a single punch design, which has significant technical limitations. Firstly, a single punch with a single die means that when faced with a customer's requirement to create multiple different hole features on a 2-meter-long single product, it's impossible to complete the punching of all hole types in a single continuous processing step. This often necessitates multiple die changes or multiple process steps, significantly increasing production time and easily leading to accumulated errors due to multiple positioning steps, severely impacting product yield.

[0004] Secondly, existing equipment lacks visual guidance and positioning capabilities, and the cutting process relies solely on a fixed material pulling distance to cut single products of fixed lengths. Since the material inevitably experiences stretching, offsetting, or slipping during transport, the fixed-distance pulling method cannot detect and compensate for these deviations in real time, resulting in low cutting position accuracy. This makes it difficult to meet the production requirements of high-precision products, leading to a high scrap rate.

[0005] More importantly, traditional punching equipment suffers from structural design flaws. The stamping die and cutting section must operate synchronously, preventing independent production actions. When the stamping die completes a set of punching operations, the cutting section must wait, and vice versa. This mutually restrictive working method severely limits the overall operating cycle time of the equipment, resulting in low production efficiency and an inability to meet the capacity demands of large-scale mass production. Therefore, a new type of punching equipment that can solve the aforementioned technical problems is urgently needed. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention aims to provide a five-punch machine with CCD vision guidance for precise cutting. By decoupling the alternating operation of the five punches and the step buffer, and by using CCD vision guidance to compensate for cutting deviations in real time, the technical problems of insufficient multi-feature hole processing capability, low cutting accuracy and low production efficiency caused by the linkage of punching and cutting in the existing equipment are solved.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows: a five-hole punching machine with CCD vision guidance for precise cutting, comprising: a machine base, the machine base including a base and a support frame, the support frame being fixed above the base, the support frame having a horizontal support beam and a vertical support beam; The unwinding section, punching section, and cutting section are arranged sequentially along the material conveying direction. The unwinding section includes a winding section, a first step section, and a first pulling section. The punching section includes five independently driven servo punch mechanisms. Each servo punch mechanism includes a servo motor, a lead screw device, and a stamping die. The stamping die is fixed on the support frame and is provided with multiple anti-fool pins. The anti-fool pins of the five servo punch mechanisms have different spacings. A double-roll step section is provided between the punching section and the cutting section. The cutting section includes a CCD vision inspection device, a semi-cutting knife device, and a winding section. The sheet metal passes through five sets of servo punch mechanisms in sequence. The five sets of stamping dies are arranged along the product holes with independently set spacing, and can move synchronously or alternately to complete the processing of all feature holes in one go.

[0008] Compared to existing technologies, the advantages of this invention are as follows: By integrating five sets of independent servo punches and error-proof dies, this application achieves continuous punching of multiple feature holes in long plate products in a single operation, avoiding the cumulative errors caused by multiple die changes and repeated positioning, and significantly improving the first-pass yield. An innovative CCD vision inspection system is introduced to identify positioning hole deviations in real time before semi-cutting and dynamically compensate for the material pulling distance. Combined with a high-precision servo slide, this completely eliminates the problem of inaccurate cutting positions caused by material stretching offset, significantly reducing the scrap rate. A double-roller step-difference buffer mechanism is set between the stamping die and the semi-cutting section. Using counterweight tension control and photoelectric sensing, a maximum product storage distance of 2.4 meters is achieved, completely decoupling and independently operating the punching and cutting processes. This eliminates the bottleneck of waiting between processes in traditional equipment, resulting in a qualitative improvement in overall production cycle time and capacity. Simultaneously, the front and back dust cleaning and the full-process EPC correction system ensure material cleanliness and conveying stability, enabling the equipment to possess high precision, high efficiency, and high reliability, fully meeting the needs of large-scale precision manufacturing of high-end FPC protective films.

[0009] In the aforementioned punching equipment, a first fixing plate is provided below the transverse support beam, the lead screw device is connected to the first fixing plate, and the stamping die is provided below the first fixing plate.

[0010] The punching equipment described above includes an upper punching die and a lower punching die. A die base guide post is provided between the upper punching die and the lower punching die. The upper punching die can punch vertically downwards under the drive of the servo motor and the lead screw device.

[0011] The aforementioned punching equipment includes a lower punching die with a lower punching die frame and a lower punching plate. The lower punching die frame has insertion holes with different spacings, and the lower punching plate has a snap-fit ​​groove. The anti-misalignment pin can be inserted into the insertion hole and snap-fitted into the snap-fit ​​groove.

[0012] The aforementioned punching equipment further includes a cleaning section and a second material pulling section behind the punching section. The cleaning section is equipped with a cleaning wheel and an adhesive roller. Both the first and second material pulling sections use servo slides to control the material pulling length. The effective material pulling distance is 500 mm to 600 mm, the material pulling speed is 200 mm / sec to 400 mm / sec, and the mechanical repeatability of the material pulling is ≤0.05 mm.

[0013] In the aforementioned punching equipment, an oil pipe is provided on one side of the support frame, and an oil pump and multiple solenoid valves are provided inside the base. The multiple solenoid valves can control the clamps of multiple stamping dies respectively.

[0014] The aforementioned punching equipment includes a double-roller step section comprising a step roller and a counterweight. The counterweight can be fixed to the step roller. The machine base is also equipped with a photoelectric sensor, which is used to monitor the lower limit position of the step roller.

[0015] In the aforementioned punching equipment, the step roller is an aluminum alloy roller body, and the outer surface of the aluminum alloy roller body is provided with a hard anodized film layer.

[0016] The aforementioned punching equipment also includes a second step section between the semi-cutting blade device and the winding section.

[0017] The aforementioned punching equipment also includes a third material pulling section between the double-roll step section and the semi-cutting knife device. Attached Figure Description

[0018] Figure 1 This is one of the schematic diagrams of the punching equipment structure according to an embodiment of the present invention; Figure 2 This is a second schematic diagram of the punching equipment structure according to an embodiment of the present invention; Explanation of reference numerals in the attached drawings: 100 Machine base, 110 Base, 120 Support frame, 121 Horizontal support beam, 123 First fixed plate, 122 Vertical support beam, 130 Oil pipe, 140 Solenoid valve, 200 Unwinding section, 210 Winding-out section, 220 First step section, 230 First pulling section, 300 Punching section, 310 Servo punch mechanism, 311 Servo motor, 312 Lead screw device, 313 Stamping die, 314 Anti-fooling pin, 315 Upper stamping die, 3 16 Lower stamping die, 317 Die base guide post, 318 Lower stamping die frame, 319 Lower stamping plate, 320 Insertion hole, 321 Snap-fit ​​groove, 400 Cutting section, 410 CCD vision inspection device, 420 Semi-cutting knife device, 430 Winding section, 500 Double roller step section, 510 Step roller, 520 Counterweight, 600 Cleaning section, 610 Cleaning wheel, 620 Adhesive roller, 700 Second pulling section, 800 Second step section, 900 Third pulling section. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below, with reference to... Figures 1 to 2An embodiment of the present invention provides a five-piece punching machine with CCD vision guidance for precise cutting, comprising: a machine base 100, and an unwinding section 200, a punching section 300, and a cutting section 400 arranged sequentially along the material conveying direction. The machine base 100 includes a base 110 and a support frame 120, the support frame 120 being fixed above the base 110, and the support frame 120 having a horizontal support beam 121 and a vertical support beam 122. The punching section 300 includes five independently driven servo punch mechanisms 310, each servo punch mechanism 310 including a servo motor 311, a lead screw device 312, and a stamping die. The stamping die 313 is fixed on the support frame 120. Multiple anti-mistake pins 314 are provided on the stamping die 313. The anti-mistake pins 314 corresponding to the five servo punch mechanisms 310 have different spacing. A double-roll step section 500 is provided between the punching section 300 and the cutting section 400. The cutting section 400 includes a CCD vision inspection device 410, a semi-cutting knife device 420, and a winding section 430. The sheet metal passes sequentially through the five sets of servo punch mechanisms 310. The five sets of stamping dies 313 are arranged along the product hole positions with independently set spacing, enabling synchronous or alternating actions to complete the processing of all feature holes in one go. This application, by integrating five sets of independent servo punches and anti-mistake dies, achieves continuous punching of multiple feature holes in long sheet products in one go, avoiding the cumulative errors caused by multiple die changes and repeated positioning, and significantly improving the first-pass yield. An innovative CCD vision inspection system is introduced to identify positioning hole deviations in real time before semi-cutting and dynamically compensate for material pulling distance. Combined with a high-precision servo slide, this completely eliminates the problem of inaccurate cutting position caused by material stretching offset, significantly reducing the scrap rate. A double-roller step section 500 buffer mechanism is set between the stamping die 313 and the semi-cutting section. Utilizing counterweight tension control and photoelectric sensing, a maximum product storage distance of 2.4 meters is achieved, completely decoupling and enabling independent operation of the punching and cutting processes. This eliminates the bottleneck of waiting between processes in traditional equipment, resulting in a qualitative improvement in overall production cycle time and capacity. Simultaneously, front and back dust cleaning and a full-process EPC correction system ensure material cleanliness and conveying stability, giving the equipment high precision, high efficiency, and high reliability, fully meeting the needs of large-scale precision manufacturing of high-end FPC protective films.

[0020] Furthermore, this embodiment provides a five-stage punching machine with CCD vision guidance for precise cutting, suitable for continuous processing scenarios such as flexible circuit boards, optical films, and conductive tapes. Its overall process flow is as follows: A roll of flexible circuit board is unwound from the unwinding section 210. After tension adjustment by the first step section 220, it is quantitatively pulled into the punching section 300 by the first pulling section 230. After adjustment by the first step section 220, the material maintains a constant flatness and tension value before entering the punching station. The first pulling section 230 quantitatively pulls the material from the first step section 220 into the punching section 300 according to a preset step distance, ensuring consistent feeding length each time. The material sequentially passes through five independently driven servo punch mechanisms 310. Each punch synchronously or alternately completes the precision punching of all feature holes according to a preset program, completing the precision punching of all feature holes on the finished product in one operation. Immediately after punching, the material enters the cleaning section 600, where it rolls against the material surface using cleaning rollers 610 and adhesive rollers 620. The second pulling section 700 then quantitatively pulls the cleaned material from the punching section 300 and feeds it into the double-roller step section 500 for buffering. As the material passes through the double-roller step section 500, the step rollers 510, under the constant downward tension provided by the counterweight 520, absorb the speed difference between the intermittent output of the punching section 300 and the continuous feeding of the cutting section 400, ensuring constant material tension and smooth operation. Next, the third pulling section 900 pulls the material from the double-roller step section 500 and feeds it into the cutting station. A CCD vision inspection device 410, positioned above the third pulling section 900, synchronously acquires images of the material's positioning holes, calculates the deviation between the actual position and the theoretical coordinates, and feeds the deviation back to the control system. The control system then dynamically compensates for the next pulling distance, eliminating accumulated errors. The finished material after cutting is buffered in the second stage section 800 to absorb the rhythm difference between the intermittent cutting of the cutting section 400 and the continuous winding of the winding section 430. The material buffered in the second stage section 800 is wound by the winding section 430 with constant tension, completing the fully automated processing.

[0021] Furthermore, referring to Figure 1The present application proposes a first fixed plate 123 below the transverse support beam 121, and a lead screw device 312 connected to the first fixed plate 123. A stamping die 313 is located below the first fixed plate 123. The lead screw device 312 includes a precision ball screw pair and a matching linear guide pair. The fixed end of the ball screw pair is mounted on the first fixed plate 123 via a bearing seat, and the lead screw nut is rigidly connected to the upper stamping die 315. A servo motor 311 drives the lead screw to rotate via a coupling, and the lead screw nut drives the upper stamping die 315 to perform precise vertical reciprocating motion along the linear guide. Furthermore, the present application proposes a stamping die 313 including an upper stamping die 315 and a lower stamping die 316. A die base guide post 317 is provided between the upper stamping die 315 and the lower stamping die 316, enabling the upper stamping die 315 to stamp vertically downwards under the drive of the servo motor 311 and the lead screw device 312. The upper die holder achieves a precise sliding fit with the lower stamping die 316 via die holder guide posts 317. A punch fixing plate is installed below the upper die holder, on which multiple punches are precisely arranged according to the product's hole pattern. The diameter, shape, and arrangement of the punches correspond one-to-one with the feature holes required by the product. The die holder guide posts 317 are key guiding elements connecting the upper stamping die 315 and the lower stamping die 316. Typically, four posts are provided, located at the four corners of the die. A precise sliding fit is used between the guide posts and the guide sleeves inside the upper die holder, ensuring that the lateral offset of the upper stamping die 315 during vertical movement is strictly limited to within allowable limits. The servo motor 311 drives the upper stamping die 315 vertically downwards along the die holder guide posts 317 via a lead screw device 312. The punch penetrates the material and enters the die hole of the lower die plate, completing the punching action. Subsequently, the servo motor 311 reverses to drive the lead screw, causing the upper stamping die 315 to move upwards along the die holder guide posts 317 to reset, awaiting the next stamping cycle. Furthermore, the lower stamping die 316 has a lower stamping die holder 318 and a lower stamping plate 319. The lower stamping die holder 318 has insertion holes 320 with different spacings, and the lower stamping plate 319 has a locking groove 321. The anti-misalignment pin 314 can be inserted into the insertion hole 320 and can be locked into the locking groove 321. The spacing of the insertion holes 320 on the lower stamping die holder 318 of the five stations is different, forming a unique "hole position code" for each station. For example, the spacing between the two insertion holes 320 in the first station is 80mm, in the second station it is 95mm, in the third station it is 110mm, in the fourth station it is 130mm, and in the fifth station it is 150mm. The lower stamping plate 319 is installed above the lower stamping die holder 318, and it has die holes for cooperating with the punch to complete the punching action, and also has a locking groove 321. The locking groove 321 is positioned corresponding to the lower end of the anti-misalignment pin 314. After the anti-misalignment pin 314 passes through the insertion hole 320 of the lower stamping die holder 318, its end is locked into the locking groove 321 of the lower stamping plate 319, thus achieving a firm connection between the anti-misalignment pin 314 and the die. The anti-misalignment pin 314 has a stepped cylindrical structure, including a large-diameter section and a small-diameter section.The large-diameter section precisely mates with the insertion hole 320 of the lower stamping die holder 318, serving a positioning and guiding function. The small-diameter section extends through the insertion hole 320 and then engages with the locking groove 321 of the lower stamping plate 319, serving a locking and fixing function. The top of the anti-misalignment pin 314 protrudes approximately 2-3 mm from the upper surface of the lower stamping die holder 318. When the die is installed at the equipment station, the top of the anti-misalignment pin 314 must precisely mate with the corresponding positioning hole at the equipment station for the die to be correctly positioned. Since the spacing of the insertion holes 320 at the five stations is different, the spacing of the anti-misalignment pin 314 on each die uniquely matches the spacing of the positioning hole at the corresponding station. If the die from the first station is mistakenly installed at the third station, the anti-misalignment pin 314 cannot be inserted into the positioning hole because the spacing of the anti-misalignment pin 314 (80 mm) is inconsistent with the spacing of the positioning hole at the third station (110 mm), and the die cannot be physically installed in place. This achieves error identification and prevention during the installation process.

[0022] Furthermore, referring to Figure 2The present application proposes a cleaning section 600 and a second pulling section 700 behind the punching section 300. The cleaning section 600 is equipped with a cleaning wheel 610 and an adhesive roller 620. Both the first pulling section 230 and the second pulling section 700 use servo slides to control the pulling length, with an effective pulling distance of 500 mm to 600 mm and a pulling speed of 200 mm / sec to 400 mm / sec. The mechanical repeatability of the pulling mechanism is ≤0.05 mm. During the punching process of flexible circuit boards, tiny debris and dust particles are inevitably generated when the punch penetrates the material. The size of these particles is usually in the range of 0.05 to 0.5 mm. If they are not removed in time, these particles will enter subsequent processes with the material and be crushed and embedded in the material surface under the pressure of the step roller 510 and the pulling roller, forming permanent indentations or scratches, which seriously affect the appearance quality of the product. A precision ball screw combined with a high-resolution encoder enables closed-loop feedback control, ensuring that the deviation between the actual stopping position and the theoretical position for each material pull is strictly controlled within ±0.05mm. Furthermore, the support frame 120 of this application is equipped with an oil pipe 130 on one side, and an oil pump and multiple solenoid valves 140 are housed inside the base 110. These solenoid valves 140 can individually control the clamping devices of multiple stamping dies 313. The oil pump, installed inside the base 110, serves as the power source for the entire hydraulic system, providing hydraulic oil at a constant pressure. The oil pipe 130 runs along one side of the support frame 120, extending from the oil pump inside the base 110, upwards along the vertical support beam 122 of the support frame 120, and then connecting to the hydraulic clamping devices of the five workstations via branch pipes. Each branch pipe is equipped with an independent solenoid valve 140, whose on / off state is independently controlled by the control system. Furthermore, the double-roller step section 500 proposed in this application includes step rollers 510 and counterweights 520. The counterweights 520 can be fixed to the step rollers 510. A photoelectric sensor is also provided on the machine base 100 to monitor the lower limit position of the step rollers 510. Two sets of step rollers 510 are provided, and the material passes between the two sets of rollers in an S-shaped path, forming a retractable buffer path. When the buffer material increases, the step rollers 510 rise under the push of the material, shortening the buffer path; when the buffer material decreases, the step rollers 510 descend under the gravity of the counterweights 520, lengthening the buffer path. The counterweights 520 are fixed to the step rollers 510 and provide a constant downward pressure tension to the material through their own gravity. The weight of the counterweights 520 can be accurately calculated and selected according to the thickness, width, and tension requirements of the material. A photoelectric sensor is also provided on the machine base 100 to monitor the lower limit position of the step rollers 510. The photoelectric sensor consists of a transmitter and a receiver. When the step roller 510 descends to the lower limit position, the sensing plate fixed on the step roller 510 blocks the light beam of the photoelectric sensor, and the sensor outputs a signal to the control system.

[0023] Furthermore, this application does not limit the specific material of the step roller 510. Preferably, the step roller 510 is an aluminum alloy roller body, and the outer surface of the aluminum alloy roller body is provided with a hard anodized film layer. The microhardness of this film layer can reach HV350~500 (equivalent to HRC38~52), which is much higher than the hardness of the aluminum alloy substrate, and has excellent wear resistance and corrosion resistance. The porous structure of the film layer can be further sealed by sealing treatment to obtain a completely dense surface. Furthermore, the application proposes a second step section 800 between the semi-cutting blade device 420 and the winding section 430. The second step section 800 between the semi-cutting blade device 420 and the winding section 430 is used to buffer the finished material after cutting and coordinate the rhythm difference between the intermittent cutting of the semi-cutting blade device 420 and the continuous winding of the winding section 430. Furthermore, the application proposes a third pulling section 900 between the double roller step section 500 and the semi-cutting blade device 420. The third feeding section 900 is responsible for precisely pulling the material from the double-roller step section 500 and feeding it into the cutting station of the semi-cutting knife device 420. The third feeding section 900 also adopts a precision feeding mechanism driven by a servo motor, and its feeding distance and speed are precisely set and dynamically adjusted by the control system according to product specifications and CCD visual feedback signals.

[0024] It should be noted that in the description of this invention, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this invention.

[0025] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, while "above," "below," "within," etc. are understood to include the stated number. If "first" or "second" is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0027] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A precision cutting five-hole punching machine with CCD vision guidance, characterized in that, include: The machine base (100) includes a base (110) and a support frame (120), the support frame (120) being fixed above the base (110), and the support frame (120) having a horizontal support beam (121) and a vertical support beam (122). The unwinding section (200), punching section (300), and cutting section (400) are arranged sequentially along the material conveying direction. The unwinding section (200) includes a winding section (210), a first step section (220), and a first pulling section (230). The punching section (300) includes five independently driven servo punch mechanisms (310). Each servo punch mechanism (310) includes a servo motor (311), a lead screw device (312), and a stamping die (313). The stamping die (313) is fixed on the support frame (120). The stamping die (313) is provided with a plurality of anti-fool pins (314). The anti-fool pins (314) corresponding to the five servo punch mechanisms (310) have different spacing. A double roller step section (500) is provided between the punching part (300) and the cutting part (400). The cutting part (400) includes a CCD vision inspection device (410), a half-cutting knife device (420), and a winding part (430). The sheet metal passes through five sets of servo punch mechanisms (310) in sequence. The five sets of stamping dies (313) are arranged along the product hole positions with independently set spacing, and can move synchronously or alternately to complete the processing of all feature holes in one go.

2. The punching equipment according to claim 1, characterized in that, A first fixing plate (123) is provided below the transverse support beam (121), the lead screw device (312) is connected to the first fixing plate (123), and the stamping die (313) is provided below the first fixing plate (123).

3. The punching equipment according to claim 2, characterized in that, The stamping die (313) includes an upper stamping die (315) and a lower stamping die (316). A die base guide post (317) is provided between the upper stamping die (315) and the lower stamping die (316). The upper stamping die (315) can press vertically downward under the drive of the servo motor (311) and the lead screw device (312).

4. The punching equipment according to claim 3, characterized in that, The lower stamping die (316) has a lower stamping die frame (318) and a lower stamping plate (319). The lower stamping die frame (318) is provided with insertion holes (320) with different spacings. The lower stamping plate (319) is provided with a snap-fit ​​groove (321). The anti-fool pin (314) can be inserted into the insertion hole (320) and the anti-fool pin (314) can be snapped into the snap-fit ​​groove (321).

5. The punching equipment according to claim 1, characterized in that, A cleaning section (600) and a second pulling section (700) are also provided behind the punching section (300). The cleaning section (600) is provided with a cleaning wheel (610) and a sticky roller (620). The first pulling section (230) and the second pulling section (700) are both controlled by a servo slide table to control the pulling length. The effective pulling distance is 500 mm to 600 mm, the pulling speed is 200 mm / sec to 400 mm / sec, and the mechanical repeatability of the pulling is ≤0.05 mm.

6. The punching equipment according to claim 1, characterized in that, The support frame (120) is provided with an oil pipe (130) on one side, and the base (110) is provided with an oil pump and multiple solenoid valves (140) inside. The multiple solenoid valves (140) can control the clamps of multiple stamping dies (313) respectively.

7. The punching equipment according to claim 1, characterized in that, The double-roller step section (500) includes a step roller (510) and a counterweight (520). The counterweight (520) can be fixed on the step roller (510). The machine base (100) is also equipped with a photoelectric sensor, which is used to monitor the lower limit position of the step roller (510).

8. The punching equipment according to claim 6, characterized in that, The step roller (510) is an aluminum alloy roller body, and the outer surface of the aluminum alloy roller body is provided with a hard anodized film layer.

9. The punching equipment according to claim 1, characterized in that, There is also a second segment (800) between the semi-cutting blade device (420) and the winding section (430).

10. The punching equipment according to claim 1, characterized in that, A third material pulling section (900) is also provided between the twin-roll step section (500) and the semi-cutting knife device (420).

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