A material band cutting device

Abstract

The application relates to a material belt cutting device which comprises a workbench and a material placing plane, the material placing plane is provided with at least two positioning members matched with material belt positioning holes, the workbench is provided with a discharging groove in a cutting area; a positioning mechanism is rotationally connected with the workbench, has a pressing plane, and is provided with a punching groove corresponding to the discharging groove on the side; a punching head of a punching mechanism reciprocates in the punching groove, a cutting edge faces the material placing plane and is opposite to the discharging groove; a pressing mechanism is transmissionally connected with the positioning mechanism or the workbench, a pressing piece presses the back end of the punching head to complete cutting, and cutting off materials are discharged through the discharging groove. The above-mentioned cooperation forms a chain link of centering anti-rotation, surface pressing limiting, guiding punching and coaxial chip removal, solves the problems of unstable alignment, insufficient pressing, no guiding and poor chip removal, improves the alignment stability and the repeat precision, improves the cutting quality and facilitates rapid model change.

Description

Technical Field

[0001] This utility model relates to a cutting device, and more particularly to a strip cutting device. Background Technology

[0002] In small-batch trial production and functional verification of continuous strips such as flexible printed circuit boards (FPCs), metal lead frames, shielding / conductive tapes, and PET / PVC composite films, it is often necessary to process the pre-defined areas to be cut on the strips by opening windows, removing contours, or segmenting the material. This stage involves small batches, frequent changes in design, and flexible cycle times, requiring simple tooling structures that are easy to learn, quick tool changes, and rapid alignment. Simultaneously, it is crucial to ensure consistent cut quality and position to meet the needs of subsequent assembly or electrical performance testing.

[0003] Current practices often rely on general-purpose punch presses combined with dedicated dies to achieve better consistency and efficiency; some solutions also use simple lever-type or manual punching fixtures to reduce upfront investment. However, dedicated dies have long development cycles, high costs, and inconvenient changeovers, making them unsuitable for rapid verification of small batches and multiple specifications; while simple fixtures are convenient, they generally only provide coarse positioning and local holding, with insufficient guidance and chip removal path planning.

[0004] Especially when the strip body has positioning holes for feeding and positioning, existing tooling generally suffers from the following problems: difficulty in achieving stable multi-point limiting and anti-rotation constraints based on the positioning holes; insufficient pressing surface to effectively limit the micro-movement of the strip during the punching process; and lack of a matching guided punching channel and corresponding cooperation with the unloading channel for the punching head, resulting in poor alignment stability and repeatability, and poor discharge of cut material. Therefore, there is an urgent need to propose a strip cutting device for trial production / verification to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a strip cutting device that can achieve reliable alignment using positioning holes and improve cutting stability and consistency through pressing, guiding and feeding.

[0006] The technical solution adopted by this utility model to solve the above problems is: a strip cutting device, wherein the strip includes several areas to be cut along its own extension direction, and positioning holes are provided on the strip adjacent to each area to be cut, including: The workbench includes a material placement plane, on which at least two positioning elements are provided. The positioning elements cooperate with corresponding positioning holes on the strip to limit the position and orientation of the strip on the material placement plane. The material placement plane includes a cutting area, and the workbench has a feeding groove in the cutting area. The positioning elements are configured such that after the positioning holes of the strip are fitted onto the positioning elements, at least one area to be cut overlaps with the cutting area. A positioning mechanism is rotatably connected to the worktable. The positioning mechanism has a pressing plane for abutting against the surface of the material strip located on the material placement plane in the working state to restrict the movement of the material strip, and a punching groove opened on the side of the pressing plane and corresponding to the unloading groove. The punching mechanism includes a punching head disposed in the punching groove and capable of reciprocating along the extension direction of the punching groove. The cutting edge of the punching head faces the material placement plane and is disposed opposite to the material unloading groove when the cutting device is in operation. The pressing mechanism is connected to the positioning mechanism or the worktable and includes an abutment member. The abutment member is configured to apply pressure to the end of the punch head away from the material placement plane when the cutting device is in working state, so that the cutting edge of the punch head cooperates with the area to be cut of the material strip to complete the punching, and the cut material from the area to be cut on the material strip is discharged through the feeding groove.

[0007] Preferably, two parallel limiting strips are provided on the material placement plane of the workbench along a first direction, and the two opposite sides of the two limiting strips abut against the opposite sides of the material strip located on the material placement plane, so as to restrict the material strip to move only along its own extension direction; wherein, the first direction is a direction perpendicular to the extension direction of the material strip.

[0008] Preferably, the positioning mechanism includes: A pressure plate, which is rotatably connected to the worktable, has a first punched slit along its own thickness direction; A positioning plate is disposed on one side of the pressure plate, and the positioning plate abuts against the material strip located on the material placement plane when the cutting device is in working state; the side of the positioning plate away from the pressure plate is the pressing plane, and the positioning plate has a second punching opening aligned with the first punching opening along its own thickness direction, and the first punching opening and the second punching opening together constitute the punching groove.

[0009] Preferably, the punching mechanism further includes: A punching plate is connected to the side of the punching head opposite to the cutting edge; Reset component, including: The pressure plate has guide holes. A first guide member is disposed on one side of the pressure plate; The second guide member is movably inserted into the guide hole and movably connected to the first guide member. The second guide member is restricted by the first guide member to move only along the thickness direction of the pressure plate. An elastic element is disposed between the first guide element and the second guide element. The elastic element is in a compressed state, and one end of the elastic element abuts against the pressure plate to apply an elastic force to the pressure plate away from the pressure plate direction.

[0010] Preferably, the punching mechanism further includes: A mounting plate is disposed on the side of the punching plate near the workbench. A third punching opening is provided on the mounting plate. The third punching opening is aligned with the second punching opening. The first punching opening, the second punching opening, and the third punching opening together constitute the punching groove.

[0011] Preferably, the pressing mechanism includes: The pressing component is rotatably connected to the positioning mechanism or the worktable; A cam is disposed on the side of the lower pressure member near the punching mechanism. The cam is the abutting member. The cam is configured to abut against the side of the pressure plate away from the worktable when the cutting device is in working state, so that the pressure plate abuts against the punching plate, thereby applying a force to the punching plate in the direction of the material placement plane.

[0012] Preferably, the punching head has a guide section that mates with the punching groove, and the two are in clearance fit, with the fit clearance preferably being 0.01 mm to 0.05 mm.

[0013] Preferably, at least two of the positioning elements include a first positioning post and a second positioning post, and the corresponding positioning holes on the material strip include at least one of a round hole and an oblong hole, wherein the cross-sectional shape of the first positioning post is configured to mate with the round hole, and the cross-sectional shape of the second positioning post is configured to mate with the oblong hole.

[0014] Preferably, a quick-change connection structure is provided between the punching head and the punching plate. The quick-change connection structure is one or a combination of threaded connection, snap-fit ​​connection or pin locking structure, so as to facilitate the replacement of punching heads of different specifications.

[0015] Preferably, the positioning plate has a replaceable pad and / or a transparent observation window at the pressing plane to prevent scratching the material surface and to observe the alignment status of the area to be cut with the punching groove.

[0016] Beneficial effects of the embodiments of this utility model By employing at least two positioning elements on the material placement plane that cooperate with the material strip positioning holes to form a multi-point reference for centering and anti-rotation, a positioning mechanism that is rotatably connected to the worktable to implement surface contact and limit the movement of the material strip on the pressing plane, and a punching groove corresponding to the unloading groove on its side to guide the punching head back and forth, the punching head blade facing the material placement plane and being set opposite to the unloading groove to form a coaxial cutting / chip removal channel, and the pressing mechanism applying pressure to the back of the punching head to perform cutting, the system can maintain stable overlap between the area to be cut and the cutting area throughout the punching process, limit the micro-movement and deflection of the material strip, and achieve guided punching and smooth unloading. This effectively solves the technical problems of unstable positioning hole alignment, insufficient pressure, lack of punching guidance, and poor material discharge in the existing technology. As a result, it achieves significant improvements in alignment stability and repeatability, improved cut consistency and appearance quality, smooth chip removal and reduced jamming, quick changeover, suitability for small-batch multi-specification trial production, and reduced mold dependence and development / adjustment costs. Attached Figure Description

[0017] Figure 1 A schematic structure of the cutting device in one embodiment of the present invention is shown. Figure 1 .

[0018] Figure 2 A schematic structure of the cutting device in one embodiment of the present invention is shown. Figure 2 .

[0019] Figure 3 An exploded view of the cutting device according to an embodiment of the present invention is shown.

[0020] Wherein: 10, workbench; 110, material placement plane; 120, positioning component; 130, material unloading groove; 140, limit strip; 20, positioning mechanism; 210, pressure plate; 211, first punching cut; 220, positioning plate; 221, pressing plane; 222, second punching cut; 30, punching mechanism; 310, punching plate; 320, punching head; 330, reset assembly; 331, first guide component; 332, second guide component; 333, pressure plate; 340, mounting plate; 341, third punching cut; 40, pressing mechanism; 410, pressing component; 420, cam. Detailed Implementation

[0021] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0022] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] See Figures 1 to 3 A preferred embodiment of this application provides a strip cutting device, wherein the strip includes several areas to be cut along its own extension direction, and positioning holes are provided on the strip adjacent to each area to be cut.

[0025] The cutting device includes a worktable 10, a positioning mechanism 20, a punching mechanism 30, and a pressing mechanism 40. The worktable 10 includes a material placement plane 110, on which at least two positioning elements 120 are provided. Each positioning element 120 engages with a corresponding positioning hole on the strip to define the position and orientation of the strip on the worktable 110. The worktable 110 includes a cutting area, and a feeding groove 130 is provided in the cutting area. The positioning elements 120 are configured such that after the positioning holes of the strip are fitted onto the positioning elements 120, at least one area to be cut overlaps with the cutting area. The positioning mechanism 20 is rotatably connected to the worktable 10. The positioning mechanism 20 has a pressing plane 221 for abutting against the surface of the strip located on the worktable 110 in the working state to restrict the movement of the strip, and a pressing surface 221 formed on the worktable 110. The pressing plane 221 is a side of the punching groove corresponding to the material feeding groove 130; the punching mechanism 30 includes a punching head 320 disposed in the punching groove and capable of reciprocating along the extension direction of the punching groove. The cutting edge of the punching head 320 faces the material placement plane 110 and is disposed opposite to the material feeding groove 130 when the cutting device is in working state; the pressing mechanism 40 is connected to the positioning mechanism 20 or the worktable 10 and includes an abutment member. The abutment member is configured to apply pressure to the end of the punching head 320 away from the material placement plane 110 when the cutting device is in working state, so that the cutting edge of the punching head 320 cooperates with the area to be cut of the material strip to complete the punching, and the cut material from the area to be cut on the material strip is discharged through the material feeding groove 130.

[0026] Specifically: Multiple positioning elements 120 are provided on the material placement plane 110. The positioning elements 120 engage with the positioning holes on the material strip adjacent to the cutting area to limit the translation and rotation of the material strip within the plane. The material placement plane 110 defines the cutting area. The worktable 10 has a discharge chute 130 in this area. The discharge chute 130 runs from top to bottom or communicates with the internal cavity to receive and discharge the cut material.

[0027] The positioning mechanism 20 is rotatably connected to the worktable 10, preferably via a rotating shaft or arm, forming two states: liftable and pressable. A pressing plane 221 is formed on the side of the positioning mechanism 20 facing the material placement platform. In the working state, the pressing plane 221 provides surface contact and limitation for the strip material located on the material placement plane 110, thereby suppressing micro-movement and warping during the punching process. A punching groove is formed on the pressing plane 221 side of the positioning mechanism 20. The punching groove extends along the thickness direction and spatially corresponds to the unloading groove 130, serving as a guide channel and chip channel for the punching head 320.

[0028] The punching mechanism 30 is disposed in the punching groove of the positioning mechanism 20, and includes a reciprocating punching head 320. The punching head 320 slides in the punching groove in a guide engagement manner, with the cutting edge facing the material placement plane 110 and opposite to the material unloading groove 130. The cutting edge shape can be a straight blade, an arc blade, or a ring blade to adapt to different contours of the area to be cut.

[0029] The pressing mechanism 40 is connected to the positioning mechanism 20 or the worktable 10 by transmission and is provided with an abutment. In the working state, the abutment abuts against the end of the punching head 320 away from the material placement plane 110. Through the mechanical conversion of levers, cams 420 or screws, a stable axial pressure is applied to the punching head 320 within a short stroke, thereby driving the punching head 320 to move downward along the punching groove direction to complete the cutting.

[0030] The relationships between the aforementioned components are as follows: the positioning element 120 establishes a geometric reference with the positioning hole; the pressing plane 221 provides surface contact limitation; the punching groove provides motion guidance and chip removal path; the unloading groove 130 handles the falling and collecting of the cut material; and the abutment element realizes energy transfer and execution. To reduce friction and wear, the material placement plane 110 and the pressing plane 221 can be made of surface-hardened metal substrate or a composite structure with wear-resistant pads; the positioning element 120 can be made of hard metal or engineering plastic inserts; the punching head 320 can be made of a high-hardness, grindable material; and the inner wall of the unloading groove 130 can be coated with a low-adhesion coating to facilitate chip removal.

[0031] The device establishes a reference by engaging the existing positioning holes on the material strip with the positioning element 120 on the material placement plane 110. The positioning mechanism 20 is rotated to cover the material strip with the pressing plane 221, achieving surface pressure and movement limitation. Subsequently, the pressing mechanism 40 applies force to the back of the punching head 320, guiding it downwards within the punching groove. The cutting edge passes through the area to be cut on the material strip and communicates with the discharge groove 130. The cut material leaves the workstation via the discharge groove 130 due to gravity and the shearing potential energy of the cutting edge. The operation process includes loading and alignment, pressing and movement limitation, pressing and punching, return reset, and part removal reset. When feeding, the strip is laid flat on the material placement plane 110 and cooperates with the positioning part 120. After alignment, the positioning mechanism 20 is rotated to make the pressing plane 221 fit with the material surface. When punching, the pressing mechanism 40 is driven, and the abutment part transmits the force to the punching head 320. After the cutting is completed, the pressing mechanism 40 is released, and the punching head 320 returns under the action of elasticity or its own weight. The positioning mechanism 20 is rotated to lift the pressing plane 221, and the workpiece is taken away or the stepping continues to be cut.

[0032] In the feeding and alignment stages, the alignment of the positioning component 120 and the positioning hole prioritizes the establishment of a joint reference for centering and anti-rotation, avoiding cumulative deviations caused by hole position errors. In the pressing stage, the pressing plane 221 covers the periphery of the area to be cut to achieve uniform force distribution, reducing material strip arching and local slippage. In the punching stage, the punching groove provides linear guidance for the punching head 320, ensuring that the cutting edge trajectory is coaxial with the unloading groove 130, thus balancing cut perpendicularity and repeatability accuracy. In the chip removal stage, the unloading groove 130 directly receives the cut material and guides it away from the cutting edge area to reduce the risk of springback and secondary scratches. If necessary, a removable and washable chip guide liner can be installed at the punching groove or unloading groove 130 for easy maintenance.

[0033] This device is suitable for small-batch trial production, verification, and process prototyping environments. It should be installed on a flat and sturdy table and used in a clean, dry, and room-temperature environment. To obtain stable cut quality, it is recommended to operate the device when the material strip surface is clean, free of oil, and has good flatness. When changing the material strip specification or blade shape, a no-load test should be performed first to check the smoothness of the guide and whether the pressing coverage meets the requirements before proceeding with the formal cutting.

[0034] The positioning element 120 can be a cylindrical pin, a tapered pin, or a shouldered guide pin, or a combination of short and long pins to balance clamping convenience and anti-rotation performance. The positioning element 120 can be a fixed configuration or installed on an adjustable mounting hole assembly to accommodate strips with different hole spacings. The pressing plane 221 can be equipped with a replaceable gasket, made of wear-resistant engineering plastic or elastomer, to balance scratch resistance and pressure distribution. The punching groove can be a straight-through or stepped guide structure, and the guide surface can be polished or coated to reduce friction. The pressing mechanism 40 can adopt different schemes such as cam 420, eccentric wheel, lever, or screw drive, as long as it can stably apply axial pressure to the back end of the punching head 320 and meet the reciprocating requirements. The feeding groove 130 can be connected to a chip collection container or chip guide pipe to collect the cut material. The above alternatives do not change the component composition and connection relationship defined in the claims.

[0035] In this embodiment, by employing multiple positioning components 120 and positioning holes to establish a centering and anti-rotation reference, by using a positioning mechanism 20 rotatably connected to the worktable 10 to implement surface contact limiting on the pressing plane 221 and by setting a punching groove corresponding to the material feeding groove 130 on its side to guide the punching head 320 to reciprocate, by using a blade facing the material placement plane 110 and being positioned opposite to the material feeding groove 130 to form a coaxial cutting and chip removal channel, and by using a pressing mechanism 40 to apply a stable force to the back end of the punching head 320 through abutment components, the technical problems of unstable positioning hole alignment, insufficient pressure, lack of punching guidance, and poor material discharge in the prior art are effectively solved. This results in improved alignment stability and repeatability, improved cut consistency and appearance quality, smooth chip removal to reduce jamming, and convenient changeover and simple device design.

[0036] See Figure 3 In some further embodiments, two parallel limiting strips 140 are provided at the material placement plane 110 on the workbench 10 along a first direction, and the two opposite sides of the two limiting strips 140 respectively abut against the opposite sides of the material strip on the material placement plane 110, so as to restrict the material strip to move only along its own extension direction; wherein, the first direction is a direction perpendicular to the extension direction of the material strip.

[0037] Specifically: The material placement plane 110 is a flat bearing surface, on which two parallel limiting strips 140 are arranged along the first direction. The limiting strips 140 are preferably long strips, made of metal or high-strength engineering plastic, with their outer edges flush with the material placement plane 110 and their inner edges forming a reference side for contact with the material strip. The opposite sides of the two limiting strips 140 are parallel to each other and face towards the center, forming a guide channel. After the material strip is laid, its opposite sides contact the opposite sides of the two strips, thus establishing double-sided constraint in the first direction. The limiting strips 140 can be installed on the material placement plane 110 using countersunk screws, pressure plates 210, or dovetail grooves. Elongated holes or guide rails can be provided at the bottom to allow for fine-tuning along the first direction. Wear-resistant linings or low-friction patches can be provided on the inner sides. If necessary, chamfers or small rounded corners can be made on the inner edges to avoid scratching the edges of the material strip.

[0038] The channel width formed by the two limiting strips 140 is slightly larger than the nominal width of the strip. When the strip is inserted, the two sides of the channel make surface-line contact with the strip edge, restricting the strip in the first direction and preventing lateral displacement. Simultaneously, since the two sides are parallel, the strip's extension direction naturally coincides with the longitudinal direction of the limiting strips 140, suppressing deflection around the perpendicular placement plane 110. The channel width is achieved through adjustable installation of the limiting strips 140 in the first direction to accommodate strips of different widths. To ensure smooth laying, an inlet ramp or flared structure can be installed at the channel entrance to facilitate rapid strip positioning. To reduce wear and edge dust accumulation, the inner reference surface can be polished or surface-hardened.

[0039] During operation, first adjust the spacing between the two limiting strips 140 according to the actual width of the material strip to form a stable double-sided reference after the material strip is placed. Then, guide the material strip into the channel from one end of the material placement plane 110, ensuring that both edges are against the inner reference surfaces of the limiting strips 140, and advance it along the extension direction of the material strip to the target station. During subsequent processes, the limiting strips 140, through double-sided constraint, suppress lateral displacement and sway of the material strip, ensuring that the material strip can only step or feed along its own extension direction. After completing the current step, release the upper constraint or loosen the pressure, and continue advancing along the channel direction to the next station.

[0040] When there is lateral disturbance or a small lateral force caused by friction, the limiting strip 140 provides reverse support to the material strip on the opposite side to prevent the material strip from moving in the first direction. When the posture deflection tendency occurs due to feeding or rebound, the equidistant constraints on both sides will quickly establish a new equilibrium position to maintain the consistency between the center line of the material strip and the center line of the channel. When changing specifications, the channel width can be reset by loosening the mounting parts and finely adjusting the position of the limiting strip 140 in the elongated hole, avoiding scratching due to being too tight or swaying due to being too loose.

[0041] For thin strips with high flexibility, flexible backing sheets can be selected to improve the bonding stability without increasing lateral resistance.

[0042] The limiting strip 140 can be a single strip or a segmented assembly for easy maintenance and replacement; the installation method can be a sliding guide rail type, a positioning pin hole type, or a flip-up pressure plate 210 type; the inner reference surface can be textured to enhance stable contact while maintaining low friction; one side of the limiting strip 140 can be equipped with an elastic pre-tightening or micro-floating mechanism to automatically compensate for the width tolerance of the material strip and the influence of thermal expansion; in scenarios requiring rapid changeover, a universal positioning grid and marking lines can be set on the material placement plane 110 to facilitate repeated restoration of the channel width.

[0043] In this embodiment, by employing two parallel limiting strips 140 arranged along the first direction and having their opposite sides abutting against the opposite sides of the material strip to form a double-sided reference, the technical problems of easy transverse movement of the material strip, feed deviation, and difficulty in maintaining posture in the prior art are effectively solved. This achieves the technical effects of stable movement of the material strip only along its own extension direction, improved alignment repeatability, reduced side scraping and edge roughening, and convenient shape change adjustment.

[0044] See Figure 3 In some further embodiments, the positioning mechanism 20 includes a pressure plate 210 and a positioning plate 220, wherein the pressure plate 210 is rotatably connected to the worktable 10, and the pressure plate 210 has a first punching notch 211 along its own thickness direction; the positioning plate 220 is disposed on one side of the pressure plate 210, and the positioning plate 220 abuts against the material strip located on the material placement plane 110 when the cutting device is in working state; the side of the positioning plate 220 away from the pressure plate 210 is the pressing plane 221, and the positioning plate 220 has a second punching notch 222 along its own thickness direction that is aligned with the first punching notch 211, and the first punching notch 211 and the second punching notch 222 together constitute the punching groove.

[0045] Specifically: The pressure plate 210 is connected to the worktable 10 via a rotating joint and can switch between lifting and pressing around the pivot. The pressure plate 210 is a plate-shaped part with a first punching notch 211 extending through its thickness direction. The periphery of the first punching notch 211 is a continuous hard guide surface, which is used to withstand the lateral reaction force during the punching process and provide an outer constraint for subsequent guidance.

[0046] The positioning plate 220 is fixedly mounted on the side of the pressure plate 210 facing the material placement plane 110. The two are reliably assembled using countersunk screws, pins, or sleeve posts, supplemented by a positioning shoulder. The side of the positioning plate 220 facing away from the pressure plate 210 is integrally machined into a pressing plane 221, which is opposite to the material placement plane 110 and forms a surface contact limit with the material strip surface during operation. A second punching notch 222 is provided through the positioning plate 220 along its thickness direction. The second punching notch 222 is spatially aligned with the first punching notch 211, and together they form a punching groove. The inner wall of the punching groove, after assembly, is a continuous and smooth guide channel, its longitudinal direction consistent with the punching direction, and the lower end of the channel corresponding to the material feeding path of the worktable 10. To prevent scratches on the material surface, the pressing plane 221 can be polished as a whole or have a wear-resistant lining attached; to improve guide durability, the periphery of the punching notch can be surface hardened or coated.

[0047] In operation, the operator first raises the pressure plate 210, lays the strip flat on the placement plane 110, and aligns it. Then, the pressure plate 210 is rotated so that the pressing plane 221 of the positioning plate 220 is in contact with the strip surface, forming a stable surface pressure limiting motion. When the punching head 320 enters the first punching opening 211 from top to bottom, it first contacts the outer guide surface and obtains primary guidance; continuing downwards, it enters the second punching opening 222, where the inner guide surface further corrects the attitude of the punching head 320, ensuring that the cutting edge trajectory coincides with the punching direction. After punching is completed, the cut material leaves the workstation along the lower path, and the operator then raises the pressure plate 210 to move it to the next step.

[0048] During the pressing stage, the actual contact area of ​​the pressing plane 221 covers the perimeter of the area to be cut, providing uniform support during punching and suppressing material arching and local slippage. During the guiding stage, the first punching opening 211 and the second punching opening 222 form a nested guide; the outer layer guides entry into the groove and resists lateral deviation, while the inner layer fine-tunes the posture and maintains coaxiality. Together, they reduce the lateral runout of the punching head 320. During the return stage, due to the continuity of the guide surface, the punching head 320 is less likely to scratch the material surface and hole edges during retraction, thus maintaining device stability.

[0049] The pressure plate 210 can adopt a lightweight structure of a single sheet or a frame plus a panel. The rotating joint can be equipped with a torsion spring or damping element to form a stable positioning. The positioning plate 220 can be a replaceable module to adapt to the punching requirements of different profile openings. The edges of the first punching opening 211 and the second punching opening 222 can be provided with rounded transitions or small chamfers to reduce blade wear and burr generation. For easy maintenance, a removable bushing or guide ring can be provided between the pressure plate 210 and the positioning plate 220 to achieve quick replacement and cleaning. The pressing surface 221 can be a metal substrate covered with a wear-resistant polymer liner, or a micro-textured surface to improve bonding stability while reducing friction.

[0050] In this embodiment, due to the adoption of a quick-opening and closing clamping method formed by the rotational connection between the pressure plate 210 and the worktable 10, the positioning plate 220 forming a pressing plane 221 on the side away from the pressure plate 210 to implement surface contact limiting of the material strip in the working state, and the alignment of the first punching opening 211 and the second punching opening 222 to jointly form a punching groove to provide graded continuous guidance for the punching head 320, the technical problems of insufficient clamping range, unstable punching guidance, and easy deviation of the blade trajectory in the prior art are effectively solved. Thus, the technical effects of improved alignment stability and repeatability, improved cut surface quality, reduced wear of the tool and guide surface, convenient opening and closing operation, and efficient maintenance and replacement are achieved.

[0051] See Figure 3 In some further embodiments, the punching mechanism 30 further includes a punching plate 310 and a reset assembly 330, wherein the punching plate 310 is connected to the side of the punching head 320 away from the cutting edge; the reset assembly 330 includes a pressure plate 333, a first guide member 331, a second guide member 332, and an elastic member, wherein the pressure plate 333 has a guide hole, the first guide member 331 is disposed on one side of the pressure plate 210, the second guide member 332 is movably inserted into the guide hole and movably connected to the first guide member 331, and the second guide member 332 is restricted by the first guide member 331 to move only along the thickness direction of the pressure plate 210; the elastic member is disposed between the first guide member 331 and the second guide member 332, the elastic member is in a compressed state, and one end of the elastic member abuts against the second guide member 332 to apply a spring force to the second guide member 332 away from the pressure plate 210.

[0052] Specifically: The punching plate 310 is connected to the side of the punching head 320 away from the cutting edge by a fastening connection, forming an integral force-bearing component so as to reliably transmit the force from the reset assembly 330 and the pressing path.

[0053] The reset assembly 330 consists of a pressure plate 333, a first guide member 331, a second guide member 332, and an elastic member.

[0054] The pressure plate 333 is a plate-shaped component with a guide hole running through its thickness direction. The inner wall of the guide hole is a continuous smooth guide surface, which is used to provide linear constraint on the second guide component 332.

[0055] The first guide member 331 is arranged on one side of the pressure plate 333 and can be a sleeve type or a rail guide type. During assembly, the positioning shoulder and pin are used to ensure the relative position with the pressure plate 333.

[0056] The second guide member 332 is movably inserted into the guide hole and forms a movable fit with the first guide member 331. The movable fit surface is precision machined or surface hardened to improve wear resistance and stable guiding ability.

[0057] The elastic element is located between the first guide element 331 and the second guide element 332 and is in a compressed state. One end of the elastic element abuts against the end face of the second guide element 332, and the other end abuts against the first guide element 331 or its bearing. After assembly, the second guide element 332 is restricted by the mating surface of the first guide element 331 and the guide hole of the pressure plate 333, and can only make reciprocating linear movements along the thickness direction of the pressure plate 333, thereby stably transmitting the restoring force to the punching plate 310 and the punching head 320 along the punching direction.

[0058] During operation, the punching head 320 is driven towards the material placement side by an external downward pressure path. During the stroke, the second guide member 332 moves downward synchronously within the guide hole, compressing the elastic member located between it and the first guide member 331. The elastic energy stored increases with the increase of the stroke. After the cutting is completed, the external load is released, the elastic member releases energy, and pushes the second guide member 332 to move in the opposite direction along the thickness direction of the pressure plate 333. Through the force chain between the second guide member 332 and the punching plate 310, the punching head 320 returns to its initial position. The composite guide formed by the guide hole and the first guide member 331 provides coaxial constraint to the second guide member 332 throughout the entire stroke, reducing lateral offset and attitude sway, and preventing the punching head 320 from lateral rubbing during the return and forward phases.

[0059] The key lies in the coordination of the reset force and the guiding constraint. When lateral disturbances occur during the punching process, the guide hole and the first guide member 331 provide double-layer restraint, while the second guide member 332 remains constrained by the single-degree-of-freedom movement in the thickness direction of the pressure plate 333, thereby maintaining the alignment of the punching plate 310 and the punching head 320. When the compression of the elastic element is large at the end of the stroke, end face washers or bearing seats are used to limit the deformation and prevent it from exceeding the design deformation range, ensuring the long-term stability of the elastic element. To reduce friction and adhesion, a small amount of lubrication can be applied to the guide mating surface or a self-lubricating bushing can be selected, and a groove for easy cleaning can be provided on the pressure plate 333 to collect micro-chips.

[0060] In this embodiment, by employing the technical means of using the guide hole of the pressure plate 333 and the first guide member 331 to jointly limit the single-degree-of-freedom linear reciprocating motion of the second guide member 332, and using the elastic member to restrict compression in the guide link and apply a reset force to the punching head 320 via the second guide member 332 and the punching plate 310, the technical problems of insufficient guidance of the reset path, easy attitude deviation during punching and return stages, and uneven reset leading to a decrease in repeatability accuracy in the prior art are effectively solved. Thus, the technical effects of stable stroke guidance, reliable return reset, reduced wear of the cutting edge and guide surface, and consistent cutting pattern and maintainability of the equipment under long-term use are achieved.

[0061] See Figure 3 In some further embodiments, the punching mechanism 30 also includes a mounting plate 340, which is disposed on the side of the punching plate 310 near the workbench 10. The mounting plate 340 has a third punching opening 341, which is aligned with the second punching opening 222. The first punching opening 211, the second punching opening 222 and the third punching opening 341 together constitute the punching groove.

[0062] Specifically: Mounting plate 340 is arranged on the side of punching plate 310 facing worktable 10 and is fixed to punching plate 310 by rigid connectors. Preferably, a positioning shoulder or cylindrical positioning fit is provided to ensure coaxial assembly. Mounting plate 340 is a plate-shaped component with a through-thickness section forming a third punching notch 341. The axis of the third punching notch 341 coincides spatially with the axis of the second punching notch 222, so that the first punching notch 211, the second punching notch 222, and the third punching notch 341 form a continuous nested punching groove after assembly. A suitable gap can be left between mounting plate 340 and worktable 10 to avoid interference at the downward limit position. The periphery of the third punching notch 341 serves as the terminal guide surface near the workpiece side, which, together with the upper guide surface, restricts the posture of punching head 320. To improve durability and guiding quality, the inner edge of the third punching notch 341 can be precision machined and surface hardened, and wear-resistant bushings or replaceable guide sleeves can be installed if necessary. Support steps can be provided on the outer surface of the mounting plate 340, which are opposite to the material unloading channel in the working area to form a smooth transition after the blade penetrates.

[0063] In use, the punching head 320 enters the first punching slot 211 and the second punching slot 222 sequentially from top to bottom to complete the primary and intermediate guidance. Continuing downwards, it enters the third punching slot 341 of the mounting plate 340. The end guide face corrects the attitude of the punching head 320, ensuring the cutting edge trajectory is consistent with the cutting direction and aligned with the material feeding channel of the worktable 10. After passing through the material, the cut material naturally detaches along the punching groove and the lower channel. The end guide of the mounting plate 340 reduces edge disturbance and springback. During the return stroke, the punching head 320 exits along the original path. The continuous cooperation of the three guide sections helps prevent the cutting edge from rubbing against the hole edge.

[0064] During the assembly stage, the third punching notch 341 is coaxially aligned with the second punching notch 222 via locating pins and fastening surfaces. During the loading stage, the mounting plate 340 bears the proximal lateral reaction force, suppressing slight deviation at the punching end. During the return stage, the continuous guide surface provides smooth traction, reducing the risk of jamming due to debris and friction. To accommodate different materials and thicknesses, guide bushings with different inner edge shapes can be selected as needed, and the relative positions of the mounting plate 340 and the punching plate 310 can be slightly adjusted to ensure continuous guidance and smooth material feeding.

[0065] Mounting plate 340 can be an integral or replaceable modular structure, and can be a composite structure with metal substrate or surface coating; the edge of third punching opening 341 can be provided with small rounded corners or micro-chamfers to reduce burrs and edge wear; the guide bushing can adopt an elastic pre-compression assembly method to compensate for mating wear; a thin vibration isolation liner can be added between mounting plate 340 and punching plate 310 to alleviate end impact and improve noise; in the case of quick maintenance, third punching opening 341 can be designed as a pull-out guide sleeve for easy quick replacement.

[0066] In this embodiment, by employing a mounting plate 340 located on the side of the punching plate 310 near the workbench 10 and setting a third punching opening 341 on it that is aligned with the second punching opening 222, the first, second, and third punching openings 341 together form a continuously nested punching groove. Therefore, this technical means effectively solves the technical problems of insufficient end-point guidance, slight deviation of the cutting edge trajectory during the penetration stage, and unsmooth transition of the cut material in the prior art. As a result, it achieves the technical effects of improved end-point guidance accuracy, improved cut consistency and appearance quality, reduced wear of the cutting edge and hole edge, and smoother material feeding channel.

[0067] See Figure 3In some further embodiments, the pressing mechanism 40 includes a pressing member 410 and a cam 420, wherein the pressing member 410 is rotatably connected to the positioning mechanism 20 or the worktable 10; the cam 420 is disposed on the side of the pressing member 410 near the punching mechanism 30, the cam 420 is the abutting member, and the cam 420 is configured to abut against the side of the pressure plate 333 away from the worktable 10 when the cutting device is in the working state, so that the pressure plate 333 abuts against the punching plate 310, so as to apply a force to the punching plate 310 in the direction of the material placement plane 110.

[0068] Specifically: The pressing component 410 is connected to the positioning mechanism 20 or the worktable 10 via a rotating joint. One end of the pressing component 410 is provided with a gripping section or a force transmission arm, and the other end is equipped with a cam 420.

[0069] The cam 420 is fixed on the side of the lower pressure member 410 near the punching mechanism 30. Its outer edge is a continuous and smooth profile surface, which is used as the contact working surface with the pressure plate 333.

[0070] The pressure plate 333 is located upstream of the force chain of the punching mechanism 30. The side of the pressure plate 333 facing away from the worktable 10 is the bearing surface acted upon by the cam 420. The side of the pressure plate 333 facing the worktable 10 can transmit force to the punching plate 310 through its own structure. To ensure stable force transmission and controllable wear, wear-resistant shims or rolling followers can be installed on the bearing surface of the pressure plate 333. To establish a reliable motion relationship, a limiting shoulder or stop block can be set at the rotation axis of the lower pressing member 410 to limit the stroke range. For ease of maintenance, the cam 420 and the lower pressing member 410 can be detachably connected, making it easy to replace cam 420 bodies with different profiles.

[0071] The operator holds the lower pressure piece 410 and swings it around the rotating joint towards the working position. The outer edge of the cam 420 contacts the side of the pressure plate 333 facing away from the worktable 10 and gradually lifts the pressure plate 333. The pressure plate 333 then moves towards the worktable 10 and fits against the punching plate 310, forming a continuous force path from the cam 420 to the pressure plate 333 and then to the punching plate 310, ultimately outputting the axial force in the direction of the material placement plane 110. As the swing continues, the cam 420 applies greater displacement and pressure to the pressure plate 333 according to the change of its contour radius, achieving stable pressing down of the punching plate 310. After completing the step, the operator swings the lower pressure piece 410 back in the opposite direction, the cam 420 exits the high-pressure contact with the pressure plate 333, and the pressure plate 333 returns to the ready state under the action of the reset link or its own weight.

[0072] During the initial contact phase, the cam 420 and the pressure plate 333 should achieve line-to-surface contact to reduce local stress concentration. During the pressurization phase, the lift of the cam 420 profile should match the required displacement of the punching mechanism 30 to avoid overshooting or insufficient force. At the extreme position, the endpoint position should be jointly defined by the stop of the lower pressure member 410 or the limiting structure of the pressure plate 333 to prevent impact damage. During the return phase, after the cam 420 retracts, it should ensure that the pressure plate 333 and the punching plate 310 do not interfere with each other and maintain the integrity of the guide surface. If dust or small debris is present in the environment, a chip collection groove can be provided in the vicinity of the cam 420 to reduce wear caused by particles entering the contact interface.

[0073] The cam 420 can be eccentric, involute, or compound lift type, with different profiles corresponding to different lifting rates and peak force curves; the bearing surface of the pressure plate 333 can be configured with a roller follower structure to reduce friction and improve service life; the lower pressure member 410 can be equipped with an elastic assist component to reduce the peak force exerted by the operator, or a positioning and locking mechanism can be set to provide stable stopping between the lifting position and the pressing position; when it is necessary to adapt to different materials and thicknesses, the cam 420 body with different lift and pressure characteristics can be replaced; in space-constrained situations, the lower pressure member 410 can be arranged coaxially with the positioning mechanism 20 to shorten the force transmission path.

[0074] In this example, by adopting a rotational force transmission configuration of the pressing member 410 and the cam 420, and by having the cam 420 act as an abutment member to directly contact the side of the pressure plate 333 facing away from the worktable 10, while simultaneously making the pressure plate 333 fit against the punching plate 310 to stably direct the pressure towards the material placement plane 110, the technical problems of the prior art, such as the difficulty in accurately controlling the manual pressing stroke, the instability of the force transmission path, and the decrease in repeatability due to local wear, are effectively solved. Thus, the technical effects of controllable pressing stroke, stable output force, reduced wear, labor-saving operation, and adaptability to different working conditions are achieved.

[0075] See Figure 3 In some further embodiments, the punching head 320 has a guide section that mates with the punching groove, and the two are in clearance fit, with the fit clearance preferably being 0.01 mm to 0.05 mm.

[0076] Specifically: The punching head 320 forms a guide section near the back end and the cutting edge. The guide section is preferably an outer cylindrical surface or a constant cross-section shape corresponding to the inner wall of the punching groove. Its outer surface is precision-machined and surface-strengthened, with a surface roughness controlled to a fine finish level to reduce friction and wear. The front end of the guide section has a small chamfer or guide cone to facilitate smooth entry into the punching groove and mitigate initial contact impact. The inner wall of the punching groove is a continuous, smooth annular or constant cross-section guide surface, which can form a through guide channel after the positioning plate 220 and mounting plate 340 are assembled. The guide section and the punching groove use a clearance fit with a micron-level gap, preferably within the range of tens of microns, so that the guide surfaces have sufficient support and correction capacity without generating excessive friction.

[0077] To improve durability and anti-adhesion capabilities, the guide surface can be made of cemented carbide bushings, carburized and nitrided layers, diamond-like carbon coatings, or self-lubricating composite bushings. The effective length of the guide section is preferably greater than the sum of the blade width and the plate thickness to provide stable attitude constraint throughout the entire stroke.

[0078] After clamping and positioning, the punching head 320 descends along the punching direction under external actuation force. The guide cone first lightly touches the entrance of the punching groove and automatically aligns itself. Subsequently, the guide section forms a circumferential close contact with the inner wall of the punching groove. The small gap restricts the lateral displacement and angular wobble of the punching head 320, allowing the cutting edge to penetrate the area to be cut along a near-coaxial trajectory. After shearing, the punching head 320 returns along the original path. The small gap guide ensures smooth retraction and avoids secondary scraping between the cutting edge and the hole edge. If fine debris adheres to the mating surface, the gap and surface treatment together reduce the adhesion tendency and maintain smooth stroke.

[0079] During the entry stage, the combination of small chamfers and small clearances can eliminate minor deviations caused by assembly and thermal expansion and contraction, quickly establishing stable guidance. During the loading stage, the guide section bears the lateral reaction force, suppressing transient deviation of the cutting edge caused by material unevenness, and improving the perpendicularity and overlap of the shearing surface through continuous support. During the return stage, the continuous guide channel provides smooth traction, reducing the risk of jamming caused by friction and debris; if abnormal stroke resistance is detected, it can be restored by cleaning the guide channel and replenishing dry film lubrication.

[0080] The guide section can be circular, rectangular, approximately rectangular with rounded corners, or have an asymmetrical cross-section to match different punching groove shapes and mechanical requirements. The guide surface can be an integral bushing type, a segmented assembly type, or a replaceable sleeve type, facilitating quick replacement according to material and cycle time. A micro-elastic compensation liner can be added between the guide section and the punching groove for minor vibration absorption and wear compensation. For scenarios with high cleanliness requirements, dustproof scrapers and limiting rings can be installed on the outside of the guide area to reduce the chance of dust intrusion.

[0081] In this embodiment, by employing a small-clearance fit between the 320 guide section of the punching head and the inner wall of the punching groove, supplemented by a guide chamfer and a high-quality guide surface, the technical problems of easy deviation of punching posture, unstable blade trajectory and easy scraping during return in the prior art are effectively solved. This results in improved guiding accuracy and repeatability, improved cut perpendicularity and appearance quality, reduced stroke resistance and wear, and stable and reliable long-term operation.

[0082] See Figure 3 In some further embodiments, at least two of the positioning elements 120 include a first positioning post and a second positioning post, and the corresponding positioning holes on the strip include at least one of a round hole and an oblong hole, wherein the cross-sectional shape of the first positioning post is configured to mate with the round hole, and the cross-sectional shape of the second positioning post is configured to mate with the oblong hole.

[0083] Specifically: A first positioning post and a second positioning post are set on the material placement plane 110.

[0084] The first positioning post is preferably a shouldered cylindrical structure, with the shoulder reliably fitting against the material placement plane 110. The post end is provided with a guide chamfer or a small conical surface to facilitate quick insertion into the circular hole. Its outer surface is finely machined and can be surface hardened or plated to form a stable centering reference. The second positioning post is positioned at a predetermined hole distance from the first positioning post. Its cross-section is an elongated oval shape, or a guide surface corresponding to the elongated oval hole is formed on the outer circumference of the cylinder. It also has a guide chamfer along its axial direction.

[0085] The inner mating surface of the second positioning post is aligned with the long side of the oblong hole to provide slight compensation in the direction of material strip extension. The two positioning posts are fixed to the worktable 10 by countersunk screws, counterbore bolts, or press-fit positioning sleeves. A limiting shoulder and anti-loosening structure can be provided at the base of the posts. To improve wear resistance and scratch prevention, a replaceable bushing or low-friction patch is preferably provided in the contact area between the round hole and the oblong hole. Reference marks can be engraved on the material placement plane 110 for quick reset of the hole spacing.

[0086] The operator lays the strip flat on the placement plane 110, ensuring the circular holes near the cutting area align with the first positioning post to establish centering and height reference. Then, the operator gently pushes the strip along its extension direction, allowing the elongated holes to fit into the second positioning post and abut against its guide surface. This provides dual constraint in lateral and rotational posture while retaining a small degree of freedom along the strip's extension direction to absorb hole spacing errors and thermal expansion / contraction. After this setup, the cutting area of ​​the strip stably overlaps with the cutting area required by subsequent workstations, allowing the pressing and punching process to begin.

[0087] During the insertion stage, the chamfered guide post of the first positioning post quickly captures the center of the circular hole, preventing edge scraping. The fit between the second positioning post and the oblong hole provides rigid lateral restraint and allows slight longitudinal slippage, thereby suppressing lateral deviation and angular wobble during stepping, pressing, and punching. When there is cumulative error in the hole spacing of the strip or slight length changes due to changes in ambient temperature, the free compensation in the direction of the oblong hole can prevent internal stress accumulation and edge biting. If foreign matter or dust is present, the low-adhesion surface of the guide chamfer and bushing facilitates self-cleaning and smooth reset.

[0088] The first positioning post can be height-adjustable or quick-release to accommodate strips of different thicknesses; the second positioning post can be designed as a flexible floating or slightly laterally pre-tightened type to automatically compensate for hole position tolerances; the two positioning posts can be arranged in a sliding mounting groove, and the hole spacing can be finely adjusted by locking components; the mating surface in the direction of the oblong hole can be replaced with a wear-resistant bushing, the bushing's shape matching the oblong hole for easy maintenance and specification switching; when the strip has a protective film on the reverse side, a flexible pad can be added to the end face of the positioning post to reduce indentation. All the above alternative solutions maintain the functional relationship of the first positioning post mating with the round hole and the second positioning post mating with the oblong hole.

[0089] In this embodiment, by employing the centering fit between the first positioning post and the circular hole, and the guiding compensation fit between the second positioning post and the elongated hole, the technical problem that the material strip reference is difficult to simultaneously take into account centering, anti-rotation and longitudinal error absorption in the prior art is effectively solved. Thus, it achieves the technical effects of stable alignment, controllable posture, smooth stepping, adaptive compensation for temperature and hole spacing tolerance, and convenient changeover and maintenance.

[0090] See Figure 3 In some further embodiments, a quick-change connection structure is provided between the punching head 320 and the punching plate 310. The quick-change connection structure is one or a combination of a threaded connection, a snap-fit ​​connection, or a pin locking structure, so as to facilitate the replacement of the punching head 320 of different specifications.

[0091] Specifically: The back end of the punching head 320 is provided with a mounting base, and the corresponding position of the punching plate 310 is provided with a receiving seat surface and a central positioning hole to establish a coaxial reference and end face reference during assembly. The quick-change connection structure can adopt any form or combination of threaded connection, snap-fit ​​connection, pin locking. In the threaded connection scheme, a threaded section is provided on the outer side of the base of the punching head 320, and a corresponding internal thread is provided on the inner side of the receiving seat surface of the punching plate 310. Axial positioning is achieved through end face contact, and radial self-centering is achieved through the thread pair. Anti-loosening components and anti-locking elements can be provided on the end face and side to suppress loosening. In the snap-fit ​​connection scheme, a boss and a positioning shoulder are formed on the base of the punching head 320, and a mating groove and an elastic fastener are provided on the punching plate 310. After insertion, the elastic element rebounds to achieve axial locking, and the positioning shoulder and the side surface of the mating groove provide radial limitation. A rotation limiter can be used to achieve half-turn or small-angle quick unlocking. In the pin locking scheme, the base of the punching head 320 is provided with a through or semi-through hole, and the punching plate 310 is provided with a corresponding alignment hole or stepped hole. Double-sided constraint is formed radially and axially through straight pins or tapered pins, and a removable locking piece can be provided at the pin end for repeated assembly and disassembly. To ensure repeatable clamping accuracy, a reference combination of end-face contact and center guidance is preferably used between the receiving seat surface and the mounting base. If necessary, a thin bushing or a small preload is provided in the assembly area to form a stable end-face clamping force and controllable assembly clearance. All contact surfaces are precision machined and wear-resistant treated, and dry film lubrication can be provided in the mating area to reduce assembly and disassembly resistance and wear.

[0092] When replacing the punch head 320, first remove the anti-reverse component or release the locking tab to make the connection structure detachable. The operator supports the punch head 320 and pulls it out along the assembly axis. After cleaning the receiving seat and positioning holes, align the target specification punch head 320 with the center and slowly insert it. For threaded designs, tighten by hand or with a wrench until the end face is flush; for snap-fit ​​designs, insert until positioned; for pin designs, insert the pin and reset the locking tab. After assembly, perform a slight wobbling check and an end face contact check to confirm good coaxial and end face contact before proceeding to the working state.

[0093] During the insertion phase, center positioning and end-face contact are established first, allowing the punching head 320 to self-guide into the receiving seat, reducing accidental contact between the cutting edge and the guide surface. During the locking phase, the connecting structure provides axial clamping force and radial limiting force to resist cyclic loads and lateral disturbances during the punching process. After prolonged operation, if slight loosening occurs, it can be re-reset using the anti-rebound component or quickly retightened according to the assembly sequence. If dust is present on-site, the smoothness and dry film lubrication of the assembly area can reduce the probability of jamming and maintain smooth assembly and disassembly.

[0094] Replaceable bushings can be added between the threaded end faces to adjust axial preload; adjustable elastic elements can be introduced into the snap-fit ​​structure to match punch heads 320 of different masses; and a double-pin symmetrical arrangement can be used in the pin structure to improve torsional stiffness. These three structures can also be combined, for example, using threads for axial clamping, locating pins for angular positioning and shear resistance, and miniature snap-fit ​​pieces for quick stop, thus achieving a balance between changeover speed and positioning accuracy. All of the above variations maintain the quick-change connection and coaxial positioning reference between the punch head 320 and the punch plate 310.

[0095] In this embodiment, a quick-change connection structure is adopted between the punching head 320 and the punching plate 310. Coaxial and axial references are established through end face fitting and center positioning. At the same time, one or a combination of thread, snap, or pin locking is used to achieve reliable locking and quick disassembly. Therefore, the technical problems of time-consuming changeover, poor clamping repeatability, and easy loosening under working load in the prior art are effectively solved. Thus, the technical effects of quick changeover, improved positioning repeatability and reliable anti-loosening, convenient maintenance, and reduced downtime and adjustment costs are achieved.

[0096] See Figure 3 In some further embodiments, the positioning plate 220 is provided with a replaceable pad and / or a transparent observation window at the pressing plane 221 to prevent scratching the material surface and to observe the alignment status of the area to be cut with the punching groove.

[0097] Specifically: The positioning plate 220 is integrally machined into a pressing surface 221 on the side facing the material strip. A mounting position is reserved on the pressing surface 221 for accommodating a replaceable gasket and a transparent observation window. The replaceable gasket is made of a sheet-like flexible or slightly elastic material, with a positioning step or limiting edge on its back and a smooth, wear-resistant working surface on its front. The gasket is fixed by screws, a pressure plate 210, snaps, a sliding guide groove, or magnetic adsorption. After assembly, it is coplanar with the pressing surface 221, ensuring uniform pressing and preventing sharp edges from forming with the material surface. The transparent observation window is located above or near the punching groove. The window frame and the positioning plate 220 are fitted with a countersunk step or an embedded structure. A sealing ring or thin gasket is placed between the light-transmitting element and the frame to prevent dust from entering. The outer side of the window is a smooth transparent surface, while the inner side near the material surface may have a slight chamfer to avoid friction with the material strip. To improve visibility and durability, the gasket and window can have rounded corners at their contact points with or near the material surface, and the window surface can be treated with anti-scratch and anti-reflective coatings. For easy maintenance, the positioning plate 220 has convenient disassembly ports or limiting screws on its side, allowing the gasket and window to be replaced independently without affecting other components.

[0098] In use, the material strip is laid on the placement plane 110 and initially aligned, then the positioning plate 220 is pressed down to the working state. A replaceable gasket adheres to the material surface in a surface-to-surface contact manner, dispersing the holding pressure and avoiding hard contact scratches and localized indentations. Simultaneously, a transparent observation window provides a direct view, allowing the operator to observe the markings or boundaries of the area to be cut and confirm alignment using the edges or markings of the punching groove. During the pressing and holding period, the gasket's micro-elasticity absorbs point interference caused by local thickness differences and tiny particles, thus maintaining stable adhesion. After punching, the positioning plate 220 is lifted, and the gasket and window surfaces can be quickly wiped clean, ready for the next cycle.

[0099] During the pressing and setting stage, the liner's flexibility rapidly spreads to form an effective contact area, reducing localized arching caused by micro-waves in the strip. During the alignment confirmation stage, the perspective effect of the window area and the geometric reference of the punching groove work together to reduce visual deviation. At the moment of punching, the liner provides uniform support to the strip, suppressing micro-movements caused by cutting forces. During the return and resetting stages, the low-adhesion properties of the liner surface help remove micro-dust, and the window sealing structure prevents debris from entering the guide channel. If ambient light is insufficient, diffused lighting or light-guiding components can be arranged around the window perimeter to enhance boundary visibility.

[0100] The replaceable gasket can be made of materials such as wear-resistant rubber and plastic, microporous polymer, and fiber-reinforced composite sheets; the surface can be finely textured to improve anti-slip stability while ensuring low friction; the gasket can be designed in sections, with a ring-shaped support area in the center that fits against the window boundary to balance visibility and uniform pressure. The light-transmitting element of the observation window can be made of high-strength transparent material or a sandwich structure, with a hard coating and anti-fog layer on the outer surface; the window can be designed as an openable small cover or a replaceable box for easy cleaning and quick replacement; micro-scale markings or cross-shaped references can be etched around the window to align the feature edges of the area to be cut. The fixing method can be selected according to the cycle and maintenance strategy, such as quick-release buckles, half-turn locks, screw-locking torque limiting, or magnetic anti-fall combinations. All the above variations maintain the basic functions and assembly relationship of the gasket for scratch prevention and pressure equalization, and the window for visual alignment.

[0101] In this embodiment, by employing replaceable pads on the pressing plane 221 to achieve surface contact scratch prevention and pressure equalization, and by providing transparent observation windows in the corresponding area of ​​the punching groove to provide direct alignment, the technical problems of rough and easily scratched pressing contact, large errors due to reliance on experience in alignment, and inconvenient cleaning and maintenance in the prior art are effectively solved. This results in better material surface protection and pressing stability, intuitive and reliable alignment confirmation, quick cyclic maintenance, and better long-term consistency. The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A strip cutting device, wherein, The strip includes several areas to be cut along its own extension direction, and positioning holes are provided on the strip adjacent to each area to be cut. Its characteristic is that it includes: The workbench includes a material placement plane, on which at least two positioning elements are provided. The positioning elements cooperate with corresponding positioning holes on the strip to limit the position and orientation of the strip on the material placement plane. The material placement plane includes a cutting area, and the workbench has a feeding groove in the cutting area. The positioning elements are configured such that after the positioning holes of the strip are fitted onto the positioning elements, at least one area to be cut overlaps with the cutting area. A positioning mechanism is rotatably connected to the worktable. The positioning mechanism has a pressing plane for abutting against the surface of the material strip located on the material placement plane in the working state to restrict the movement of the material strip, and a punching groove opened on the side of the pressing plane and corresponding to the unloading groove. The punching mechanism includes a punching head disposed in the punching groove and capable of reciprocating along the extension direction of the punching groove. The cutting edge of the punching head faces the material placement plane and is disposed opposite to the material unloading groove when the cutting device is in operation. The pressing mechanism is connected to the positioning mechanism or the worktable and includes an abutment member. The abutment member is configured to apply pressure to the end of the punch head away from the material placement plane when the cutting device is in working state, so that the cutting edge of the punch head cooperates with the area to be cut of the material strip to complete the punching, and the cut material from the area to be cut on the material strip is discharged through the feeding groove.

2. The strip cutting device according to claim 1, characterized in that, Two parallel limiting strips are provided on the material placement plane of the workbench along the first direction, and the two opposite sides of the two limiting strips respectively abut against the opposite sides of the material strip on the material placement plane to restrict the material strip to move only along its own extension direction; wherein, the first direction is the direction perpendicular to the extension direction of the material strip.

3. The strip cutting device according to claim 1, characterized in that, The positioning mechanism includes: A pressure plate, which is rotatably connected to the worktable, has a first punched slit along its own thickness direction; A positioning plate is disposed on one side of the pressure plate, and the positioning plate abuts against the material strip located on the material placement plane when the cutting device is in working state; the side of the positioning plate away from the pressure plate is the pressing plane, and the positioning plate has a second punching opening aligned with the first punching opening along its own thickness direction, and the first punching opening and the second punching opening together constitute the punching groove.

4. The strip cutting device according to claim 3, characterized in that, The punching mechanism also includes: A punching plate is connected to the side of the punching head opposite to the cutting edge; Reset component, including: The pressure plate has guide holes. A first guide member is disposed on one side of the pressure plate; The second guide member is movably inserted into the guide hole and movably connected to the first guide member. The second guide member is restricted by the first guide member to move only along the thickness direction of the pressure plate. An elastic element is disposed between the first guide element and the second guide element. The elastic element is in a compressed state, and one end of the elastic element abuts against the pressure plate to apply an elastic force to the pressure plate away from the pressure plate direction.

5. The strip cutting device according to claim 4, characterized in that, The punching mechanism also includes: A mounting plate is disposed on the side of the punching plate near the workbench. A third punching opening is provided on the mounting plate. The third punching opening is aligned with the second punching opening. The first punching opening, the second punching opening, and the third punching opening together constitute the punching groove.

6. A strip cutting device according to claim 4 or 5, characterized in that, The pressing mechanism includes: The pressing component is rotatably connected to the positioning mechanism or the worktable; A cam is disposed on the side of the lower pressure member near the punching mechanism. The cam is the abutting member. The cam is configured to abut against the side of the pressure plate away from the worktable when the cutting device is in working state, so that the pressure plate abuts against the punching plate, thereby applying a force to the punching plate in the direction of the material placement plane.

7. The strip cutting device according to claim 1, characterized in that, The punching head has a guide section that mates with the punching groove, and the two are in clearance fit with a clearance of 0.01 mm to 0.05 mm.

8. The strip cutting device according to claim 1, characterized in that, At least two of the positioning elements include a first positioning post and a second positioning post, and the corresponding positioning holes on the material strip include at least one of a round hole and an oblong hole, wherein the cross-sectional shape of the first positioning post is configured to mate with the round hole, and the cross-sectional shape of the second positioning post is configured to mate with the oblong hole.

9. A strip cutting device according to claim 4, characterized in that, A quick-change connection structure is provided between the punching head and the punching plate. The quick-change connection structure is one or a combination of threaded connection, snap-fit ​​connection or pin locking structure, so as to facilitate the replacement of punching heads of different specifications.

10. A strip cutting device according to claim 4, characterized in that, The positioning plate has a replaceable liner and / or a transparent observation window at the pressing surface to prevent scratching the material surface and to observe the alignment status of the area to be cut with the punching groove.

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