Stamping production line leveling machine and production process thereof

By integrating the leveling machine and the buffer area into a single design, the problems of large footprint and material strip damage in stamping production lines are solved, achieving space saving, stable operation and improved efficiency, and adapting to high-speed continuous production.

CN122033079APending Publication Date: 2026-05-15DONGGUAN JIUXIE AUTOMATION EQUIP CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGGUAN JIUXIE AUTOMATION EQUIP CO LTD
Filing Date
2026-03-23
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

In existing stamping production lines, leveling machines occupy a large area and suffer severe dynamic impact losses, making them difficult to adapt to the demands of high-speed continuous production.

Method used

The leveler and buffer area are integrated into a single design. The leveler is tilted and uses the discharge port to form a buffer area. The output speed is adjusted by controlling the main unit to achieve smooth and continuous feeding.

Benefits of technology

It saves production line floor space, reduces material belt damage, improves processing stability and production line efficiency, and adapts to high-speed continuous production.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122033079A_ABST
    Figure CN122033079A_ABST
Patent Text Reader

Abstract

The invention provides a stamping production line leveling machine and a production process thereof, and relates to the technical field of leveling equipment. The leveling machine comprises a base, a mounting rod, a control main machine, a leveling machine angle adjusting mechanism, a leveling machine body and a discharging adjusting opening. The mounting rod is vertically arranged on the base, and the control host is mounted on the mounting rod; the leveling machine angle adjusting mechanism is mounted on the mounting rod, and the leveling machine body is fixedly mounted on the leveling machine angle adjusting mechanism and used for adjusting the inclination angle of the leveling machine body. The discharging adjusting opening is formed in the mounting rod and located below the output end of the leveling machine body, and a buffering area for a material belt to pass through in a suspended mode is formed between the mounting rod and the discharging adjusting opening; and the leveling machine main body is electrically connected with the control host. The leveling machine is obliquely arranged and is integrated with a buffer area, so that the space of a production line is greatly saved; the feeding speed is continuously adjusted through the control host, smooth and continuous output is achieved, dynamic impact is eliminated, damage to a material belt is avoided, and the continuous production requirement of a high-speed punching machine can be met.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of leveling equipment technology, and in particular to a leveling machine for a stamping production line and its manufacturing process. Background Technology

[0002] In the stamping production process, the buffer zone is a key element in the production line design. Its core function is to balance the production rhythm between the uncoiler and the punch press, absorb the impact force generated by the high-speed movement of the material, prevent production blockages, and improve overall operating efficiency. The leveler, as the core equipment in this zone, is used to eliminate internal stress in the coiled material, making it flat to ensure the quality of subsequent stamped products.

[0003] However, the leveling machine and buffer design in existing stamping production lines have the following defects: (1) Excessive space occupation: Traditional production lines mostly adopt a linear layout, with uncoilers, levelers, buffer pits or buffer arcs and punch presses arranged in sequence. In order to provide sufficient buffering, a buffer area of ​​3-5 meters or even longer needs to be reserved. This not only occupies valuable workshop space, but also leads to low production line integration and limited output per unit area.

[0004] (2) Dynamic impact loss: After the material is output from the leveling machine, in order to match the intermittent operation of the punch press, the feeding method of "start-stop" or "shaking" is often adopted. When the high-speed moving strip is pulled or braked in an instant, a large instantaneous impact force will be generated. This impact will not only damage the surface of the strip, but may even cause secondary deformation or uneven internal stress of the strip, affecting the accuracy of the final product.

[0005] (3) Production cycle time limitation: Due to the traditional buffering and feeding methods, the uncoiled material needs to go through multiple stops and positioning before entering the punch press, which is difficult to adapt to the continuous and high-frequency production needs of modern high-speed punch presses, thus becoming a bottleneck restricting the improvement of the overall line efficiency.

[0006] Therefore, there is an urgent need for a stamping production line leveling machine and its production process that can solve the above problems, achieve a smoother production process, and occupy less space. Summary of the Invention

[0007] This invention provides a stamping production line leveling machine and its production process. By technically modifying the existing leveling machine, it solves the problems of existing stamping production lines having a large footprint, long production lines, and the existing production lines having a pulsating rhythm to pull the material belt. Although there is a buffer area for the material belt to buffer, the pulling impact on the material belt is still large, causing impact damage.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A leveling machine for a stamping production line, comprising: Base; The mounting rod is vertically mounted on the base; The control unit is mounted on the mounting rod; The main body of the leveling machine is used to level the material strip; A leveling machine angle adjustment mechanism is mounted on the mounting rod. The leveling machine body is fixedly mounted on the leveling machine angle adjustment mechanism. The leveling machine angle adjustment mechanism is used to adjust the tilt angle of the leveling machine body relative to the horizontal plane. The discharge adjustment port is installed on the mounting rod and located below the output end of the main body of the leveling machine. A buffer area is formed between the discharge adjustment port and the output end of the main body of the leveling machine, through which the feeding belt passes in a suspended manner for buffering. The leveling machine body is electrically connected to the control host.

[0009] Preferably, the mounting rod is further provided with a height adjustment component for adjusting the height position of the main body of the leveling machine; the height adjustment component includes a bottom support rod, a height adjustment rod, and an adjustment handwheel; the bottom support rod is fixed to the base, the height adjustment rod is sleeved on the bottom support rod and is connected to the adjustment handwheel for transmission, and the height adjustment rod is driven to rise and fall by rotating the adjustment handwheel; the leveling machine angle adjustment mechanism and the discharge adjustment port are both installed on the height adjustment rod.

[0010] Preferably, the leveling machine angle adjustment mechanism includes: The fixed end is fixed to the mounting rod; A leveling machine mounting base is rotatably mounted on the fixed end, and the main body of the leveling machine is fixed on the leveling machine mounting base; A rotary adjustment knob and a rocker arm structure are mounted on the fixed end. The rotary adjustment knob is driven to the leveling machine mounting base through the rocker arm structure.

[0011] Preferably, a feeding speed sensor for monitoring the speed of the conveyor belt is provided at the discharge adjustment port, and the feeding speed sensor is electrically connected to the control host.

[0012] Preferably, the base is provided with a horizontal slide rail at its bottom, and the base is slidably mounted on the horizontal slide rail.

[0013] Preferably, the leveling machine body includes: Leveling machine housing; A drive motor is mounted on the housing of the leveling machine and electrically connected to the control host. The gearbox and gear transmission assembly are connected to the output end of the drive motor; Multiple upper pressure rollers and multiple lower pressure rollers are rotatably installed inside the housing of the leveling machine. A gap is formed between the upper pressure rollers and the lower pressure rollers through which the feeding belt passes. The gear transmission group is drivenly connected to the lower pressure rollers.

[0014] Preferably, there are four sets of upper pressure rollers and five sets of lower pressure rollers, and the upper and lower pressure rollers are arranged alternately.

[0015] Preferably, the housing of the leveling machine is provided with a material thickness handwheel for adjusting the distance between the upper and lower pressure rollers.

[0016] Preferably, the front and rear ends of the leveling machine housing are provided with infeed transfer rollers and discharge transfer rollers for guiding materials.

[0017] A production process for a leveling machine in a stamping production line includes the following steps: S1. Coarse Position Adjustment: Based on the production line layout, push the leveling machine so that its base slides along the horizontal slide rail to roughly adjust the distance between the main body of the leveling machine and the adjacent uncoiler and punching machine. S2. Angle fine adjustment: The tilt angle of the main body of the leveler can be precisely adjusted according to the characteristics of the strip and the requirements of the stamping process through the angle adjustment mechanism of the leveler. S3, Threading: The material strip is fed from the transfer roller shaft at the front end of the leveling machine body, passes between the upper and lower pressure rollers in sequence, and is output from the transfer roller shaft at the rear end of the leveling machine body. It is then allowed to hang freely to form a suspended arc-shaped buffer area, and finally passes through the discharge adjustment port into the subsequent stamping equipment. S4. Continuous production: When the equipment is started, the host control adjusts the speed of the drive motor in real time according to preset parameters or signals fed back by the feed speed sensor, so that the leveler outputs the material strip at a smooth and continuous speed that matches the needs of the punch press. The material strip hangs naturally in the buffer area under the action of gravity, dynamically balancing the speed difference between the output of the leveler and the suction speed of the punch press.

[0018] The beneficial effects of this invention are as follows: This invention integrates the leveling machine and the buffer area into a single design, which greatly saves the space occupied in the production line and increases the output per side area. By controlling the host to adjust the output speed of the leveling machine, the original dynamic shaking pull material belt is transformed into a smooth and continuous output material belt, which gradually releases the internal stress of the material, resulting in better buffering effect, stronger processing stability, and lower scrap rate. It eliminates the need for multiple stops for positioning and can meet the continuous production needs of high-speed punch presses.

[0019] 1. High space utilization: By tilting the main body of the leveling machine and utilizing the space between its output end and the discharge adjustment port to naturally form a buffer area, this invention eliminates the need for traditional buffer pits or long buffer arcs that require additional ground space. It achieves the integration of leveling and buffering functions, significantly saving the production line floor space and improving the output efficiency per unit area.

[0020] 2. Stable operation and high product yield: This invention transforms the traditional "start-stop shaking" feeding into a "smooth and continuous" feeding by controlling the main unit's output speed of the leveling machine. Combined with the naturally formed buffer zone due to gravity, it gradually releases the internal stress of the material, effectively eliminating damage and deformation caused by instantaneous impact on the material strip, resulting in stronger processing stability and significantly reducing the scrap rate.

[0021] 3. Adaptable to high-speed continuous production: Because it achieves continuous and smooth output of the material strip, there is no need to make multiple stops and positioning to match the punching cycle. It can perfectly adapt to the continuous stamping requirements of high-speed punching machines, completely solve the constraint of the buffer link on the overall production cycle in traditional production lines, and greatly improve the efficiency of the production line.

[0022] 4. High adaptability and flexible adjustment: Through the cooperation of height adjustment components, angle adjustment mechanisms and horizontal slide rails, the leveling machine of the present invention can flexibly adapt to uncoilers and punch presses of different specifications, as well as strips of different thicknesses and materials, and has extremely high versatility. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the front view of the present invention; Figure 3 This is a schematic diagram of the rear structure of the present invention; Figure 4 This is a schematic diagram of the angle adjustment mechanism of the leveling machine of the present invention; Figure 5 This is a schematic diagram of the main structure of the leveling machine of the present invention; Figure 6 This is a schematic diagram of the exploded structure of the leveling machine. Reference numerals: 1. Base; 2. Mounting rod; 3. Control host; 4. Leveler angle adjustment mechanism; 5. Leveler body; 6. Discharge adjustment port; 7. Horizontal slide rail; 8. Material belt; 21. Height adjustment assembly; 211. Adjustment handwheel; 212. Height adjustment rod; 213. Bottom support rod; 41. Fixed end; 42. Leveler mounting base; 43. Rotation adjustment knob; 44. Swing rod structure; 51. Leveler housing; 52. Drive motor; 53. Gearbox; 54. Gear transmission group; 55. Upper pressure roller; 56. Lower pressure roller; 57. Material thickness handwheel; 58. Feed transfer roller shaft; 59. Discharge transfer roller shaft; 61. Feeding speed sensor. Detailed Implementation

[0024] The specific content of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0025] Please see Figure 1-6 As shown, this application provides a leveling machine for a stamping production line, comprising: Base 1; Mounting rod 2 is vertically mounted on the base 1; The control host 3 is mounted on the mounting rod 2; The main body of the leveling machine 5 is used to level the material strip 8; The leveling machine angle adjustment mechanism 4 is installed on the mounting rod 2. The leveling machine body 5 is fixedly installed on the leveling machine angle adjustment mechanism 4. The leveling machine angle adjustment mechanism 4 is used to adjust the tilt angle α of the leveling machine body 5 relative to the horizontal plane. The discharge adjustment port 6 is installed on the mounting rod 2 and located below the output end of the leveling machine body 5. A buffer area is formed between the discharge adjustment port 6 and the output end of the leveling machine body 5, through which a feeding belt 8 passes in the air for buffering. The leveling machine body 5 is electrically connected to the control host 3.

[0026] Furthermore, the mounting rod 2 is also provided with a height adjustment component 21 for adjusting the height position of the leveling machine body 5; the height adjustment component 21 includes a bottom support rod 213, a height adjustment rod 212 and an adjustment handwheel 211; the bottom support rod 213 is fixed to the base 1, the height adjustment rod 212 is sleeved on the bottom support rod 213 and is connected to the adjustment handwheel 211 for transmission, and the height adjustment rod 212 is driven to rise and fall by rotating the adjustment handwheel 211; the leveling machine angle adjustment mechanism 4 and the discharge adjustment port 6 are both installed on the height adjustment rod 212.

[0027] Furthermore, in order to precisely adjust the tilt angle α of the leveling machine body 5, the leveling machine angle adjustment mechanism 4 includes: Fixed end 41 is fixed to the mounting rod 2; The leveling machine mounting base 42 is rotatably mounted on the fixed end 41, and the leveling machine body 5 is fixed on the leveling machine mounting base 42; The rotary adjustment knob 43 and the swing arm structure 44 are mounted on the fixed end 41. The rotary adjustment knob 43 is driven to the leveling machine mounting base 42 through the swing arm structure 44.

[0028] The operator can precisely change the tilt angle of the leveling machine mounting base 42 by rotating the adjustment knob 43, thereby adjusting the angle α between the leveling machine body 5 fixed on it and the horizontal plane (usually adjustable range is 0°-15°).

[0029] Furthermore, in order to monitor the speed of the material belt 8 passing through the discharge regulating port 6 in real time and feed the signal back to the control host 3 to achieve closed-loop control, a feeding speed sensor 61 for monitoring the speed of the material belt 8 is provided at the discharge regulating port 6, and the feeding speed sensor 61 is electrically connected to the control host 3.

[0030] The discharge regulating port 6 typically consists of two adjustable rollers or wear-resistant plates, used to guide the material belt 8 and control its output direction. A vertical and horizontal distance is maintained between the output end of the leveling machine body 5 and the discharge regulating port 6. When the material belt 8 passes through, it naturally droops, forming a suspended arc-shaped area, which is the buffer area of ​​this invention. A feeding speed sensor 61 (such as a photoelectric encoder) is installed on the inlet side of the discharge regulating port 6 to monitor the actual passing speed of the material belt 8 in real time.

[0031] The control host 3 is also mounted on the mounting rod 2 and is electrically connected to the drive motor 52 and the feeding speed sensor 61 of the leveling machine body 5. It is used to receive signals and control the operation of the leveling machine body 5.

[0032] Furthermore, a horizontal slide rail 7 is provided at the bottom of the base 1, and the base 1 is slidably mounted on the horizontal slide rail 7. The base 1 is a stable metal platform, and a groove matching the horizontal slide rail 7 is installed at its bottom.

[0033] Furthermore, the leveling machine body 5 includes: Leveling machine housing 51; The drive motor 52 is mounted on the housing 51 of the leveling machine and is electrically connected to the control host 3; The gearbox 53 and the gear transmission assembly 54 are connected to the output end of the drive motor 52; Multiple upper pressure rollers 55 and multiple lower pressure rollers 56 are rotatably installed inside the housing 51 of the leveling machine. A gap is formed between the upper pressure rollers 55 and the lower pressure rollers 56 through which the feeding belt 8 passes. The gear transmission group 54 is drivenly connected to the lower pressure rollers 56.

[0034] Furthermore, the upper pressure roller 55 is provided in four sets, and the lower pressure roller 56 is provided in five sets, with the upper pressure roller 55 and the lower pressure roller 56 arranged alternately.

[0035] Furthermore, the leveling machine housing 51 is provided with a material thickness handwheel 57 for adjusting the distance between the upper pressure roller 55 and the lower pressure roller 56. By rotating the material thickness handwheel 57, the distance between the upper pressure roller 55 and the lower pressure roller 56 can be precisely adjusted to accommodate material strips 8 of different thicknesses.

[0036] Furthermore, the front and rear ends of the leveling machine housing 51 are provided with infeed transfer rollers 58 and discharge transfer rollers 59 for guiding materials.

[0037] A production process for a leveling machine in a stamping production line includes the following steps: S1. Coarse Position Adjustment: According to the production line layout, push the leveler along the horizontal slide rail 7 so that the feed port of the leveler body 5 is aligned with the uncoiler and the discharge port is roughly aligned with the feed port of the stamping machine. S2. Angle fine adjustment: Adjust the leveling machine body 5 to a suitable height by adjusting the handwheel 211, and then adjust the tilt angle α of the leveling machine body 5 by rotating the adjustment knob 43, according to the material, thickness and required buffer curvature of the material strip 8. S3, Threading: Pull the head of the material strip 8 out of the uncoiler and pass it through the feed transfer roller 58, the gap between the upper pressure roller 55 and the lower pressure roller 56, and the discharge transfer roller 59 in sequence. Then, continue to pull the material strip 8 forward so that it hangs down naturally to form a buffer area. Finally, pass the head of the material strip 8 through the discharge adjustment port 6 and send it into the mold inlet of the stamping machine. S4. Continuous Production: After setting the operating parameters on the control host 3 and starting the equipment, the stamping press begins to work at a fixed rhythm, intermittently sucking up the material strip 8 from the buffer area. When the stamping press sucks up material, the curvature of the material strip in the buffer area decreases; when the stamping press pauses, the curvature of the buffer area increases. The feeding speed sensor 61 monitors the speed of the material strip 8 passing through the discharge regulating port 6 in real time and feeds the signal back to the control host 3. Based on this signal, the control host 3 adjusts the speed of the drive motor 52 in real time: when the discharge speed is detected to be fast, the drive motor 52 accelerates to replenish the material strip 8 in the buffer area; when the discharge speed is slow or zero, the drive motor 52 decelerates or maintains a basic speed to ensure that the material strip 8 always maintains a certain curvature in the buffer area, so as not to be excessively straightened or piled up. Throughout the process, the leveling machine body 5 delivers the material strip 8 to the buffer area in a smooth and continuous manner, avoiding the impact caused by the traditional start-stop method.

[0038] In summary, by tilting the leveler and utilizing the space between it and the discharge port as a gravity buffer, combined with intelligent speed control, this invention achieves multiple beneficial effects such as space saving, stable operation, and improved efficiency, and has high industrial application value.

[0039] This invention integrates the leveling machine and the buffer area into a single design, which greatly saves the space occupied in the production line and increases the output per side area. By controlling the host to adjust the output speed of the leveling machine, the original dynamic shaking pull material belt is transformed into a smooth and continuous output material belt, which gradually releases the internal stress of the material, resulting in better buffering effect, stronger processing stability, and lower scrap rate. It eliminates the need for multiple stops for positioning and can meet the continuous production needs of high-speed punch presses.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

[0041] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0042] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A leveling machine for a stamping production line, characterized in that, include: Base; The mounting rod is vertically mounted on the base; The control unit is mounted on the mounting rod; The main body of the leveling machine is used to level the material strip; A leveling machine angle adjustment mechanism is installed on the mounting rod. The main body of the leveling machine is fixedly installed on the leveling machine angle adjustment mechanism. The leveling machine angle adjustment mechanism is used to adjust the tilt angle of the main body of the leveling machine relative to the horizontal plane. as well as The discharge adjustment port is installed on the mounting rod and located below the output end of the main body of the leveling machine. A buffer area is formed between the discharge adjustment port and the output end of the main body of the leveling machine, through which the feeding belt passes in a suspended manner for buffering. The leveling machine body is electrically connected to the control host.

2. The stamping production line leveling machine according to claim 1, characterized in that, The mounting rod is also equipped with a height adjustment component for adjusting the height of the main body of the leveling machine; the height adjustment component includes a bottom support rod, a height adjustment rod, and an adjustment handwheel; the bottom support rod is fixed to the base, the height adjustment rod is sleeved on the bottom support rod and is connected to the adjustment handwheel for transmission, and the height adjustment rod is driven to rise and fall by rotating the adjustment handwheel; the leveling machine angle adjustment mechanism and the discharge adjustment port are both installed on the height adjustment rod.

3. The stamping production line leveling machine according to claim 2, characterized in that, The leveling machine angle adjustment mechanism includes: The fixed end is fixed to the mounting rod; A leveling machine mounting base is rotatably mounted on the fixed end, and the main body of the leveling machine is fixed on the leveling machine mounting base; A rotary adjustment knob and a rocker arm structure are mounted on the fixed end. The rotary adjustment knob is driven to the leveling machine mounting base through the rocker arm structure.

4. The stamping production line leveling machine according to claim 1, characterized in that, A feeding speed sensor for monitoring the speed of the conveyor belt is installed at the discharge adjustment port, and the feeding speed sensor is electrically connected to the control host.

5. The stamping production line leveling machine according to claim 1, characterized in that, The base is provided with a horizontal slide rail at its bottom, and the base is slidably mounted on the horizontal slide rail.

6. The stamping production line leveling machine according to claim 1, characterized in that, The main body of the leveling machine includes: Leveling machine housing; A drive motor is mounted on the housing of the leveling machine and electrically connected to the control host. The gearbox and gear transmission assembly are connected to the output end of the drive motor; Multiple upper pressure rollers and multiple lower pressure rollers are rotatably installed inside the housing of the leveling machine. A gap is formed between the upper pressure rollers and the lower pressure rollers through which the feeding belt passes. The gear transmission group is drivenly connected to the lower pressure rollers.

7. The stamping production line leveling machine according to claim 6, characterized in that, The upper pressure rollers are provided in four sets, and the lower pressure rollers are provided in five sets, with the upper and lower pressure rollers arranged alternately.

8. The stamping production line leveling machine according to claim 6, characterized in that, The leveling machine housing is equipped with a material thickness handwheel for adjusting the distance between the upper and lower pressure rollers.

9. The stamping production line leveling machine according to claim 6, characterized in that, The front and rear ends of the leveling machine housing are equipped with infeed transfer rollers and discharge transfer rollers for guiding materials.

10. A production process for a stamping production line leveling machine, based on the stamping production line leveling machine according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Coarse Position Adjustment: Based on the production line layout, push the leveling machine so that its base slides along the horizontal slide rail to roughly adjust the distance between the main body of the leveling machine and the adjacent uncoiler and punching machine. S2. Angle fine adjustment: The tilt angle of the main body of the leveler can be precisely adjusted according to the characteristics of the strip and the requirements of the stamping process through the angle adjustment mechanism of the leveler. S3, Threading: The material strip is fed from the transfer roller shaft at the front end of the leveling machine body, passes between the upper and lower pressure rollers in sequence, and is output from the transfer roller shaft at the rear end of the leveling machine body. It is then allowed to hang freely to form a suspended arc-shaped buffer area, and finally passes through the discharge adjustment port into the subsequent stamping equipment. S4. Continuous production: When the equipment is started, the host control adjusts the speed of the drive motor in real time according to preset parameters or signals fed back by the feed speed sensor, so that the leveler outputs the material strip at a smooth and continuous speed that matches the needs of the punch press. The material strip hangs naturally in the buffer area under the action of gravity, dynamically balancing the speed difference between the output of the leveler and the suction speed of the punch press.