Single knife double bottom high speed rotary die cutting seat

Abstract

This invention belongs to the field of die-cutting machine technology and discloses a high-speed circular die-cutting base with a single blade and double bottom rollers. It includes a base and a circular die-cutting roller, a first bottom roller, a second bottom roller, and a guide roller mounted on the base. The first bottom roller and the circular die-cutting roller are tangent to form a first die-cutting area, and the second bottom roller and the circular die-cutting roller are tangent to form a second die-cutting area. Along the rotation direction of the circular die-cutting roller, the material sequentially passes through the inlet side of the first die-cutting area, the outlet side of the first die-cutting area, the inlet side of the second die-cutting area, and the outlet side of the second die-cutting area. This invention forms two independent die-cutting areas by setting the first bottom roller and the second bottom roller on both sides of a single circular die-cutting roller. The material strip sequentially passes through the first and second die-cutting areas, completing two die-cutting actions during one rotation of the circular die-cutting roller, breaking through the efficiency bottleneck of the traditional "one rotation, one cut" method.

Description

Technical Field

[0001] This invention belongs to the field of die-cutting machine technology, specifically relating to a single-blade, double-bottom-roller high-speed circular blade die-cutting base. Background Technology

[0002] Existing rotary die-cutting equipment commonly employs a basic structure with a single magnetic roller and a single bottom roller. In this structure, when the material strip is conveyed continuously at a uniform speed, the magnetic roller completes only one die-cutting operation per revolution, producing one finished unit. This "one-turn-one-cut" working mode severely restricts the equipment's production efficiency, making it difficult to meet the current market demand for high-capacity, high-efficiency mass production. To increase capacity, traditional solutions typically include adding multiple independent die-cutting stations and additional cutter rollers and drive systems. However, such solutions not only significantly increase equipment size and manufacturing costs but also complicate the mechanical structure, making debugging and maintenance more difficult, which is detrimental to the development of compact or low-cost equipment.

[0003] Furthermore, the die-cutting length of traditional die-cutting stations is directly limited by the circumference (i.e., diameter) of the magnetic roller. If products of different lengths need to be produced, magnetic rollers of corresponding diameters must be replaced. This process is cumbersome and time-consuming, severely impacting changeover efficiency. Simultaneously, companies need to stock various specifications of rollers as spare parts, increasing inventory and management costs. To avoid roller replacement, some equipment uses intermittent paper feeding, matching the fixed-circumference cutter roller through stop-and-go motion. However, this sacrifices the speed advantage of continuous operation, significantly reducing overall production efficiency. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a high-speed circular die-cutting base with a single blade and double bottom rollers to solve the problems existing in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is a single-blade double-bottom roller high-speed circular blade die-cutting station, including a base and a circular blade roller, a first bottom roller, a second bottom roller, and a guide roller mounted on the base. The first bottom roller and the circular blade roller are tangent to form a first die-cutting area, and the second bottom roller and the circular blade roller are tangent to form a second die-cutting area. Along the rotation direction of the circular blade roller, the material sequentially passes through the inlet side of the first die-cutting area, the outlet side of the first die-cutting area, the inlet side of the second die-cutting area, and the outlet side of the second die-cutting area. The material strip to be die-cut passes through the first die-cutting area and the second die-cutting area in sequence. After completing the die-cutting in the first die-cutting area, the material strip is turned and guided into the second die-cutting area by the guide roller. By adjusting the position of the guide roller, the path of the material strip into the second die-cutting area is changed, thereby adjusting its die-cutting starting position in the second die-cutting area, realizing the adaptation to different die-cutting lengths, and completing two die-cutting actions in one rotation of the circular blade roller, significantly improving the die-cutting efficiency.

[0006] Preferably, the installation method between the roller body of the first bottom roller and / or the second bottom roller and the base can be selected between fixed installation and adjustable installation.

[0007] Furthermore, both the first bottom roller and the second bottom roller are fixedly mounted on the base, and the tangential directions of the first bottom roller and the circular cutter roller are parallel to the tangential directions of the second bottom roller and the circular cutter roller.

[0008] Furthermore, the first bottom roller is fixedly mounted on the base, and the second bottom roller is flexibly mounted on the base.

[0009] Furthermore, the roller body and the base are installed in an adjustable manner, and the position of the roller body on the base can be adjusted. By changing the position of the tangent point between the roller body and the circular cutter roller, the die-cutting position of the material strip is finely adjusted to compensate for the die-cutting phase deviation caused by the adjustment of the guide roller or the change of material tension, thereby improving the die-cutting accuracy and length consistency.

[0010] Furthermore, the base is also provided with a die-cutting length fine-tuning component, which includes a swing arm. The swing fulcrum of the swing arm coincides with the rotation axis of the circular cutter roller, and the roller body is rotatably mounted on the swing arm. By driving the swing arm to swing around the axis of the circular cutter roller, the roller body is driven to move in the circumferential direction. While realizing the fine-tuning of the die-cutting position, it ensures that the roller body always maintains tangential contact with the circular cutter roller.

[0011] Furthermore, the die-cutting length fine-tuning component also includes a drive gear; the free end of the swing arm is provided with a transmission tooth array in an arc shape, the center of the arc array of the transmission tooth coincides with the swing fulcrum of the swing arm; the drive gear meshes with the transmission tooth, and by rotating the drive gear, the swing arm is driven to swing precisely around the axis of the circular cutter roller, thereby realizing the adjustment of the roller position.

[0012] Furthermore, the swing arm is provided with limiting guide rollers, which are arranged in pairs, and the gap between the two limiting guide rollers constitutes the transmission gap of the material strip; the limiting guide rollers are provided on both the inlet and outlet sides of the die-cutting area corresponding to the finely adjusted roller body, and are respectively defined as the inlet side guide roller and the outlet side guide roller; the center lines of the transmission gap of the inlet side guide roller and the outlet side guide roller are both located on the tangent line between the roller body and the circular cutter roller, so as to ensure that the material strip maintains precise alignment and smooth adhesion when entering and leaving the roller body.

[0013] Furthermore, the base is also provided with a coarse adjustment component for the die-cutting length. The coarse adjustment component for the die-cutting length includes a linear moving component, and the guide roller is installed at the moving end of the linear moving component. The coarse adjustment component for the die-cutting length drives the linear moving component, thereby causing the guide roller to move linearly in a preset direction, thereby changing the turning path length of the strip from the first die-cutting area to the second die-cutting area, and realizing the adjustment of the die-cutting length.

[0014] Furthermore, the roller body and the base are fixedly installed, and the moving direction of the linear moving component is parallel to the tangent line of the roller body and the circular cutter roller; at least one guide roller at the moving end of the linear moving component has its guiding surface located on the tangent line of the roller body and the circular cutter roller.

[0015] The main technical effects of this invention are reflected in the following aspects: This invention creates two independent die-cutting zones by setting a first bottom roller and a second bottom roller on both sides of a single circular cutter roller. The material strip passes through the first and second die-cutting zones sequentially, completing two die-cutting actions during one rotation of the circular cutter roller, breaking through the efficiency bottleneck of the traditional "one-turn-one-cut" method. This structure requires no additional cutter rollers or drive systems; by optimizing the bottom roller layout and material strip path, it can nearly double the theoretical production capacity while maintaining a compact design and controllable costs, making it particularly suitable for high-cycle, continuous production of flexible materials. Furthermore, addressing the issue of frequent roller changes required by traditional equipment due to the die-cutting length being limited by the circumference of the magnetic roller, this invention introduces a guide roller that can move in a straight line and integrates it into the die-cutting length coarse adjustment component. By adjusting the position of the guide roller, the turning path length of the material strip from the first to the second die-cutting zone is changed, thereby adjusting the spacing between the two die-cutting operations (i.e., the finished product unit length). This mechanism allows the same set of circular cutter rollers to be adapted to various product specifications, significantly reducing changeover time and spare parts inventory. It solves the pain points of "cumbersome roller changing and high cost" in the background technology, while retaining the high-speed advantage of continuous uniform feeding.

[0016] To address the offset of the die-cutting starting point caused by adjustments to the material guide path or fluctuations in material tension, this invention introduces a swing arm structure with the axis of the circular cutter roller as the fulcrum at the mounting point of the second bottom roller. This structure, combined with an arc-shaped transmission gear and a drive gear, forms a lever-type fine-tuning system. When the drive gear rotates, the swing arm oscillates slightly around its coaxial fulcrum via meshing transmission, causing the second bottom roller to move precisely along its circumference, dynamically adjusting its tangent point with the circular cutter roller. Because the swing trajectory is concentric with the circular cutter roller, a constant meshing pressure and contact state are maintained throughout the adjustment process, effectively compensating for phase errors and significantly improving die-cutting accuracy and length consistency over multiple batches and long-term operation.

[0017] On the feed and discharge sides of the die-cutting area corresponding to the fine-tuning bottom roller, this invention features paired limiting guide rollers whose transmission gap centerlines are strictly aligned with the tangent line between the bottom roller and the circular cutter roller. This design ensures that the material strip remains centered and free from lateral offset when entering and leaving the die-cutting point during dynamic adjustment. Even during the fine-tuning process of the swing arm, the material strip can smoothly adhere to the roller surface, avoiding deviation, shaking, or wrinkling caused by angle changes or tension disturbances. This ensures the stability and yield of the high-speed continuous die-cutting process, making it particularly suitable for processing thin, easily deformable, or high-precision materials. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a half-sectional view of the present invention; Figure 3 This is a half-sectional view of the present invention; Figure 4 This is a trend diagram of the material strip in this invention; In the figure: 1. Base; 2. Circular cutter roller; 3. First bottom roller; 4. Second bottom roller; 5. Die-cutting length coarse adjustment component; 51. Guide roller; 6. Die-cutting length fine adjustment component; 61. Swing arm; 62. Drive gear; 63. Transmission gear; 64. Limiting guide roller. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master. In the embodiments, it should be understood that the terms "middle," "upper," "lower," "top," "right side," "left end," "above," "back," "center," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, unless otherwise specified in this specific embodiment, the connection or fixing method between components can be achieved by bolt fixing, pin fixing, or pin connection commonly used in the prior art, etc., and therefore will not be described in detail in this embodiment.

[0020] The single-blade double-bottom roller high-speed circular blade die-cutting station provided by this invention is mainly used in continuous high-speed die-cutting processes of flexible materials (such as labels, tapes, foam, release films, protective films, etc.), but it is not limited to this. It can also be used in other similar roll-to-roll production processes, such as die-cutting composite, irregular punching, multi-segment cutting, or sheet forming processes that require high pitch accuracy and high efficiency.

[0021] Furthermore, as is common knowledge in this industry, the circular cutter roller 2 mentioned above is typically a magnetic roller or a metal roller capable of adsorbing the die, with its surface used to fix the rotating die-cutting tool; the bottom roller is generally made of hard steel, rubber, or magnetically coupled roller, used to form a stable meshing pressure with the circular cutter roller 2 to complete the shearing action; the guide roller 51 is usually equipped with bearing support and has a smooth surface or rubber coating to guide the material strip to change direction smoothly. Since this is common knowledge, its principles and structure will not be elaborated further.

[0022] Example 1 This embodiment provides a single-blade, double-bottom-roller high-speed circular blade die-cutting station, aiming to solve the "one-turn-one-cut" capacity bottleneck and the difficulty in switching die-cutting lengths mentioned in the background art. See also... Figure 1 , Figure 2 and Figure 3 Specifically, it includes a base 1 and a circular cutter roller 2, a first bottom roller 3, a second bottom roller 4, and a guide roller 51 mounted on the base 1. The first bottom roller 3 and the circular cutter roller 2 are tangent to form a first die-cutting area, and the second bottom roller 4 and the circular cutter roller 2 are tangent to form a second die-cutting area. Both the first bottom roller 3 and the second bottom roller 4 are fixedly mounted on the base 1, and the tangent directions of the first bottom roller 3 and the circular cutter roller 2 are parallel to the tangent directions of the second bottom roller 4 and the circular cutter roller 2. Along the rotation direction of the circular cutter roller 2, the material sequentially passes through the inlet side of the first die-cutting area, the outlet side of the first die-cutting area, the inlet side of the second die-cutting area, and the outlet side of the second die-cutting area. The material to be die-cut passes sequentially through the first die-cutting area and the second die-cutting area. After die-cutting in the first die-cutting area, the material is redirected by the guide roller 51 and guided into the second die-cutting area, achieving secondary die-cutting.

[0023] It is worth noting that by using a single circular cutter roller 2 in conjunction with two bottom rollers, two independent die-cutting actions are completed during one rotation of the circular cutter roller 2, thereby increasing the theoretical production capacity to twice that of the traditional single bottom roller structure. This significantly breaks through the efficiency limitation of "one rotation and one cut", and there is no need to add additional cutter rollers or workstations, effectively controlling the size and cost of the equipment.

[0024] Furthermore, both the first bottom roller 3 and the second bottom roller 4 are equipped with clutches, further enhancing the functional flexibility and process adaptability of the die-cutting station. By integrating clutches (such as electromagnetic clutches, pneumatic clutches, or mechanical overrunning clutches) at the drive ends of the two bottom rollers, it is possible to independently control whether each bottom roller rotates synchronously with the circular cutter roller 2 or is in a free-spinning or braking state. For example, in the case of a single die-cutting operation, the clutch of the second bottom roller 4 can be disengaged to stop its rotation or disengage it from the drive, avoiding ineffective friction and material damage; while in the dual die-cutting mode, both clutches are engaged simultaneously to ensure that the two bottom rollers and the circular cutter roller 2 operate in strict synchronization, maintaining a stable die-cutting pressure and phase relationship.

[0025] Furthermore, the introduction of the clutch facilitates equipment debugging, threading, and handling of abnormal shutdowns: during the threading stage, the bottom roller can be placed in a free state, reducing operating resistance; in case of material jamming or abnormal tension, the corresponding bottom roller power can be quickly disengaged to prevent material breakage or equipment overload. More importantly, when used in conjunction with the aforementioned material guide path adjustment and oscillation fine-tuning mechanism, the clutch ensures that the corresponding bottom roller is activated only in the area requiring die-cutting, avoiding unnecessary contact wear or reverse traction in non-working areas, thereby improving the overall reliability and lifespan of the system. Although this configuration is based on common industry transmission control methods, its application in the double-bottom roller high-speed die-cutting structure of this invention significantly expands the equipment's operating modes and process compatibility.

[0026] Preferably, to adapt to product requirements with different die-cut lengths, see [reference needed]. Figure 2 , Figure 3 In this embodiment, a coarse adjustment component 5 for the die-cutting length is provided on the base 1. This component includes a linear moving part (slide table and ball screw), and a guide roller 51 is mounted on the moving end of this linear moving part. When the finished product length needs to be adjusted, the linear moving part is driven to move the guide roller 51 linearly in a preset direction (preferably parallel to the tangent of the bottom roller and the circular cutter roller 2), thereby changing the turning path length of the material strip from the first die-cutting area to the second die-cutting area. This change in path length directly determines the starting position of the second die-cutting relative to the first die-cutting, thus achieving adjustment of the overall die-cutting pitch.

[0027] The specific motion process is as follows: The strip enters the first die-cutting area at a constant speed, and the first cut is completed at the meshing point of the circular cutter roller 2 and the first bottom roller 3; then the strip leaves the first die-cutting area, passes around the guide roller 51, and is guided to the second die-cutting area; the position of the guide roller 51 determines the angle and arc length of the strip entering the second die-cutting area. When the guide roller 51 moves closer to the circular cutter roller 2, the entry point of the strip in the second die-cutting area is advanced, and the die-cutting pitch is shortened; conversely, the pitch is extended. Since both the first bottom roller 3 and the second bottom roller 4 are fixedly installed, the structure is simple and has high rigidity, making it suitable for production scenarios where the changeover frequency requirement is not high but high stability is sought.

[0028] In addition, to ensure that the material strip fits precisely in the die-cutting area, the moving end of the linear moving component is provided with at least one guide roller 51. Its guiding surface is designed to be located exactly on the tangent line between the roller body and the circular cutter roller 2, so that the material strip is in an ideal fit before entering the die-cutting point, avoiding die-cutting deviation or material wrinkles caused by path offset.

[0029] Example 2 This embodiment provides a high-speed circular die-cutting station with a single blade and double bottom rollers. This embodiment is a further optimization based on Embodiment 1, focusing on solving the problem of die-cutting phase drift caused by material guide path adjustment or material tension fluctuations, thereby improving the consistency of high-precision die-cutting. Unlike Embodiment 1, in this example, the first bottom roller 3 is fixedly installed on the base 1, while the second bottom roller 4 adopts an adjustable installation method, and dynamic compensation is achieved through a set of precision die-cutting length fine-tuning components 6.

[0030] Preferred, see Figure 2 , Figure 3 and Figure 4 The base 1 is also equipped with a die-cutting length fine-tuning component 6, which includes a swing arm 61. The swing fulcrum of the swing arm 61 coincides with the rotation axis of the circular cutter roller 2. The second bottom roller 4 (i.e., the "roller body") is rotatably mounted on the swing arm 61. When the guide roller 51 changes the material path due to coarse adjustment, the actual die-cutting starting position of the material strip in the second die-cutting area may be slightly offset. At this time, by driving the swing arm 61 to swing slightly around the axis of the circular cutter roller 2, the second bottom roller 4 can be moved in the circumferential direction to accurately adjust its tangent point position with the circular cutter roller 2, thereby compensating for the phase error and ensuring that the starting point height of each die-cutting is consistent. Moreover, by driving the swing arm 61 to swing around the axis of the circular cutter roller 2, the roller body is moved in the circumferential direction, which, while realizing the fine-tuning of the die-cutting position, ensures that the roller body always maintains tangential contact with the circular cutter roller 2.

[0031] Furthermore, to achieve high precision and stepless adjustment, the die-cutting length fine-tuning component 6 also includes a drive gear 62. The free end of the swing arm 61 is provided with a transmission tooth 63 arranged in an arc shape, the center of which coincides with the swing fulcrum. After the drive gear 62 meshes with the transmission tooth 63, rotating the drive gear 62 can drive the swing arm 61 to swing smoothly and precisely around the axis of the circular cutter roller 2. This structure cleverly utilizes the coaxial swing principle, maintaining tangential contact between the second bottom roller 4 and the circular cutter roller 2 throughout the adjustment process, avoiding pressure imbalance or die-cutting failure due to angle changes. This is an advantage that is difficult to achieve with traditional translational adjustment mechanisms. At the same time, when the drive gear 62 is rotated manually or by a servo motor, its output torque is transmitted to the transmission tooth 63 through gear meshing, thereby driving the swing arm 61 to swing at a small angle around the coaxial fulcrum. Since the swing arm 61 forms a lever structure with the axis of the circular cutter roller 2 as the fulcrum, the force applied to the distal teeth of the drive gear 62 can be effectively amplified into a highly sensitive adjustment of the roller position. Simultaneously, because the lever arm path is along the circumferential direction, the roller maintains tangential contact with the circular cutter roller 2 throughout its movement, ensuring both the stability of the die-cutting pressure and enabling stepless, precise fine-tuning of the die-cutting phase. This design cleverly integrates the lever principle with concentric circular arc gear transmission, balancing adjustment accuracy, structural compactness, and operational reliability.

[0032] It is worth noting that the swing arm 61 is equipped with limiting guide rollers 64, which are arranged in pairs. The gap between the two limiting guide rollers 64 constitutes the transmission gap of the material strip. Such limiting guide rollers 64 are provided on both the inlet and outlet sides of the second die-cutting area (i.e., the die-cutting area corresponding to the fine-tuning bottom roller), and are defined as the inlet-side guide roller 51 and the outlet-side guide roller 51, respectively. Crucially, the center lines of the transmission gaps of both are strictly aligned with the tangent line between the second bottom roller 4 and the circular cutter roller 2. This design ensures that the material strip is always centered and without skewing when entering and leaving the dynamically adjusted die-cutting area, effectively preventing deviation, shaking, or wrinkling caused by the bottom roller fine-tuning, and ensuring the stability and yield of high-speed continuous die-cutting. Through a dual-stage adjustment mechanism of "coarse adjustment + fine adjustment", the guide roller 51 achieves a wide range of die-cutting length switching, and the swing arm 61 fine adjustment system achieves high-precision phase compensation. This not only solves the problems of slow changeover and many spare parts in traditional equipment, but also enables flexible adaptation to various product lengths without changing the rollers, while maintaining a high-efficiency operation mode of continuous and uniform paper feeding.

[0033] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A high-speed circular die-cutting base with a single blade and double bottom rollers, characterized in that, The device includes a base and a circular cutter roller, a first bottom roller, a second bottom roller, and a guide roller mounted on the base. The first bottom roller and the circular cutter roller are tangent to form a first die-cutting area, and the second bottom roller and the circular cutter roller are tangent to form a second die-cutting area. Along the rotation direction of the circular cutter roller, the material sequentially passes through the inlet side of the first die-cutting area, the outlet side of the first die-cutting area, the inlet side of the second die-cutting area, and the outlet side of the second die-cutting area. The material strip to be die-cut passes through the first die-cutting area and the second die-cutting area sequentially. After completing die-cutting in the first die-cutting area, the material strip is redirected by the guide roller and guided into the second die-cutting area. By adjusting the position of the guide roller, the path of the material strip into the second die-cutting area is changed, thereby adjusting its die-cutting starting position in the second die-cutting area, achieving adaptation to different die-cutting lengths, and completing two die-cutting actions during one rotation of the circular cutter roller. The installation method between the roller body of the first bottom roller and / or the second bottom roller and the base can be selected between fixed installation or adjustable installation; If the roller body and the base are installed in an adjustable manner, the position of the roller body on the base can be adjusted. By changing the position of the tangent point between the roller body and the circular cutter roller, the die-cutting position of the material strip can be finely adjusted to compensate for the die-cutting phase deviation caused by the adjustment of the guide roller or the change of material tension, thereby improving the die-cutting accuracy and length consistency. The base is also provided with a die-cutting length fine-tuning component, which includes a swing arm. The swing fulcrum of the swing arm coincides with the rotation axis of the circular cutter roller, and the roller body is rotatably mounted on the swing arm. By driving the swing arm to swing around the axis of the circular cutter roller, the roller body is driven to move in the circumferential direction, thereby achieving fine-tuning of the die-cutting position while ensuring that the roller body always maintains tangential contact with the circular cutter roller. The die-cutting length fine-tuning component also includes a drive gear; the free end of the swing arm is provided with a transmission tooth array in an arc shape, the center of the arc array of the transmission tooth coincides with the swing fulcrum of the swing arm; the drive gear meshes with the transmission tooth, and by rotating the drive gear, the swing arm is driven to swing precisely around the axis of the circular cutter roller, thereby realizing the adjustment of the roller position.

2. The single-blade double-bottom roller high-speed circular blade die-cutting base as described in claim 1, characterized in that, The first bottom roller and the second bottom roller are both fixedly mounted on the base, and the tangential direction of the first bottom roller and the circular cutter roller is parallel to the tangential direction of the second bottom roller and the circular cutter roller.

3. The single-blade double-bottom roller high-speed circular blade die-cutting base as described in claim 1, characterized in that, The first bottom roller is fixedly mounted on the base, and the second bottom roller is flexibly mounted on the base.

4. The single-blade double-bottom roller high-speed circular blade die-cutting base as described in claim 1, characterized in that, The swing arm is provided with limiting guide rollers, which are arranged in pairs, and the gap between the two limiting guide rollers constitutes the transmission gap of the material belt. The limiting guide rollers are provided on both the infeed side and the outfeed side of the die-cutting area corresponding to the finely adjusted roller body, and are respectively defined as the infeed side guide roller and the outfeed side guide roller; the center lines of the transmission gap between the infeed side guide roller and the outfeed side guide roller are both located on the tangent line between the roller body and the circular cutter roller, so as to ensure that the material strip maintains precise centering and smooth adhesion when entering and leaving the roller body.

5. The single-blade double-bottom roller high-speed circular blade die-cutting base as described in any one of claims 1 to 3, characterized in that, The base is also provided with a die-cutting length coarse adjustment component, which includes a linear moving component, and the guide roller is installed at the moving end of the linear moving component; The linear moving component is driven by the coarse adjustment component for die-cutting length, which in turn drives the guide roller to move linearly in a preset direction, thereby changing the turning path length of the strip from the first die-cutting area to the second die-cutting area and thus adjusting the die-cutting length.

6. The single-blade double-bottom roller high-speed circular blade die-cutting base as described in claim 5, characterized in that, The moving direction of the linear moving component is parallel to the tangent line between the roller body and the circular cutter roller; The moving end of the linear moving component has at least one guide roller whose guide surface is located on the tangent line between the roller body and the circular cutter roller.

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