A hidden blade magnetic knife roller

Abstract

The utility model relates to magnetic knife roller technical field discloses a hidden blade formula magnetic knife roller, including the roller, the outer wall of roller is opened with a plurality of guide grooves, a plurality of the inside of guide groove is provided with magnetic attraction mechanism, the left end of roller is provided with mounting mechanism, the magnetic attraction mechanism includes a plurality of metal sheets, one end of a plurality of metal sheets is connected with the inner wall sliding of corresponding guide groove, the other end of a plurality of metal sheets is all fixedly connected with blade seat, the recess is all seted up to one side of a plurality of blade seat, the inner wall of roller is opened with a plurality of installation groove, in the utility model, the magnet that is built -in in the roller inside generates the attraction of metal sheet, forms the uniform adsorption surface, makes metal sheet and blade seat be firmly attracted and fixed in guide groove, can carry out quick replacement to blade through external force overcoming magnetic force, can quickly adapt the cutting demand of different material and thickness.

Description

Technical Field

[0001] This utility model relates to the field of magnetic cutter roller technology, and in particular to a hidden blade type magnetic cutter roller. Background Technology

[0002] In the field of industrial cutting, the cutter roller is the core component for material slitting and cutting. Its performance directly determines the production efficiency and processing quality. It is widely used in printing and packaging, electronics manufacturing and automotive parts processing, where there are high requirements for equipment intelligence and flexibility.

[0003] A search revealed Chinese Patent Publication No. CN220576164U, which discloses a feeding structure and a magnetic die-cutting roller. This utility model relates to the field of die-cutting roller structure technology, specifically a feeding structure and a magnetic die-cutting roller, including a roller body, several combined toothed plates, and a mounting and positioning assembly. A feeding toothed plate is coaxially arranged on one side of the roller body, and a stepped groove is formed on one side of the outer circumference of the feeding toothed plate. Several combined toothed plates are respectively inserted into one side of the stepped groove via a guide assembly. The guide assembly includes several guide rods, and the mounting assembly includes several fixing screws and several spring brackets. Several spring frames are respectively positioned opposite each other on one side of the feed toothed plate. By installing positioning components, the conventional gear is set into a gear structure consisting of several combined toothed plates. When some teeth are damaged, they can be quickly and stably replaced with the help of the guide components, reducing the cost of overall replacement. Moreover, this assembled structure does not require the entire roller body to be disassembled for maintenance, making maintenance simple, efficient, convenient to use, and reliable. However, in actual use, the blades cannot be quickly replaced, making it unable to quickly adapt to the cutting needs of different materials and thicknesses, thus failing to meet the needs of users. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a hidden blade type magnetic cutter roller, which aims to improve the problem that the blades in the prior art cannot be quickly replaced and cannot be quickly adapted to the cutting needs of different materials and thicknesses.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hidden blade type magnetic cutter roller, including a roller, the outer wall of the roller is provided with multiple guide grooves, the interior of the multiple guide grooves is provided with a magnetic attraction mechanism, and the left end of the roller is provided with an installation mechanism; The magnetic attraction mechanism includes multiple metal plates, one end of each metal plate being slidably connected to the inner wall of a corresponding guide groove, and the other end of each metal plate being fixedly connected to a blade holder. Each blade holder has a groove on one side. The inner wall of the roller has multiple mounting grooves. Multiple magnets are disposed inside the roller. Each magnet has a mounting tenon fixedly connected to its outer wall. The outer walls of the mounting tenons are slidably connected to the inner walls of their respective mounting grooves. Each blade holder has a disassembly / assembly assembly on one side. Each groove has a limit assembly inside it. Each blade holder has a fixing assembly on its right end.

[0006] Through the above technical solution: the magnet is slidably installed on the inner side of the roller through the mounting groove. The magnet generates a magnetic field that attracts the metal plate. Through the uniform adsorption surface, the metal plate and the blade holder are firmly attracted and fixed in the guide groove. The guide groove plays a guiding and limiting role for the metal plate and the blade holder, preventing the metal plate and the blade holder from deviating.

[0007] As a further description of the above technical solution: the installation mechanism includes a sealing cover, the outer wall of which is slidably connected to the left end of the inner wall of the roller, the left end of the roller is provided with multiple limiting grooves, the outer wall of the sealing cover is fixedly connected with multiple positioning blocks, one end of each positioning block is slidably connected to the inner wall of the corresponding limiting groove, the inner wall of the sealing cover is threaded with multiple screws, one end of each screw penetrates the inner wall of the sealing cover and is threadedly connected to the left side of the inner wall of the roller, and the right side of the sealing cover is provided with an auxiliary release component.

[0008] Through the above technical solution: the sealing cover can seal the roller. When the magnet inside the roller needs to be replaced, the sealing cover can be unscrewed to release it from the roller. After the sealing cover is opened, the magnet can be easily replaced. Then the positioning block can position the screw hole, making it easy for the screw to be screwed into the screw hole.

[0009] As a further description of the above technical solution: the disassembly and assembly assembly includes multiple mounting seats, the bottom of each of the multiple mounting seats being slidably connected to the inner wall of a corresponding groove, multiple positioning grooves being provided on the opposite side of the inner wall of each of the multiple mounting seats, wedges being slidably connected to the inner wall of each of the multiple positioning grooves, guide rods being fixedly connected to one end of each of the multiple wedges, springs being provided on the outer side of each of the multiple guide rods, one end of each of the multiple springs being fixedly connected to one end of a corresponding wedge, and the other end of each of the multiple springs being fixedly connected to the inner wall of a corresponding positioning groove, pull rods being provided on the opposite side of the outer wall of each of the multiple mounting seats, and one end of each of the multiple guide rods penetrating one side of the inner wall of a corresponding positioning groove and being fixedly connected to one side of the corresponding pull rod.

[0010] The above technical solution works as follows: when the blade is installed in its seat groove, the wedge is compressed and retracts into the positioning groove, aligning the wedge with the wedge groove on the blade. The rebound force of the spring will make the wedge and the wedge groove tightly engage, thereby quickly fixing the blade. To remove the blade, simply pull the pull rods on both sides of the mounting base, which will drive the guide rod, thereby causing the guide rod to move the wedge out of the wedge groove, achieving quick removal of the blade.

[0011] As a further description of the above technical solution: the limiting component includes multiple guide posts, which are fixedly connected to the four corners of the bottom inner wall of the corresponding groove. The bottom outer wall of each guide post is fixedly connected to an annular protrusion. Guide holes are provided at the four corners of the bottom of the multiple mounting seats. The top outer wall of each guide post is slidably connected to the inner wall of the corresponding guide hole. Multiple springs are fixedly connected to the bottom inner wall of each groove. The other end of each spring is fixedly connected to the bottom of the corresponding mounting seat.

[0012] Through the above technical solution: the guide post slides inside the guide hole to guide and limit the mounting seat, the spring two allows the blade to move up and down to a certain extent, and the annular protrusion contacts the bottom of the mounting seat to prevent the blade from retracting further and avoid damage to the spring two due to excessive displacement.

[0013] As a further description of the above technical solution: the fixing component includes a housing, and multiple housings are respectively fixedly connected to the right end of the corresponding blade holder. One end of the inner wall of each of the multiple housings is slidably connected to a locking block. Multiple slots are opened on the right side of the outer wall of the roller. One end of each of the multiple locking blocks is engaged with the inner wall of the corresponding slot. The other end of each of the multiple locking blocks is fixedly connected to a spring. The other end of each of the multiple springs is fixedly connected to one side of the inner wall of the corresponding housing. A sliding groove is opened on the right side of each of the multiple housings. A slider is slidably connected to the inner side of each of the multiple sliding grooves. The left end of each of the multiple sliders is fixedly connected to the corresponding locking block.

[0014] The above technical solution works by pulling the slider to move the locking block upward within the housing, while simultaneously compressing the third spring. When the metal plate is inserted into the guide groove, the slider is released, and the third spring releases its elastic force, pushing the locking block downward and engaging with the groove of the roller, thereby limiting the axial displacement between the metal plate and the blade holder.

[0015] As a further description of the above technical solution: the auxiliary release assembly includes an insulating frame, the left end of which is fixedly connected to the right end of the sealing cover, and an electromagnetic coil is provided on the inner side of the insulating frame.

[0016] Through the above technical solution: when the electromagnetic coil is energized, it can affect the magnetic field of the magnet, making it easier to remove the metal plate, and the insulating frame can prevent the energized electromagnetic coil from having an adverse effect on the roller.

[0017] As a further description of the above technical solution: each of the plurality of metal plates is fixedly connected to a limiting rod on the opposite side, and one end of each of the limiting rods is slidably connected to one side of the inner wall of the corresponding guide groove.

[0018] Through the above technical solution, the limiting rod plays a radial limiting role on the metal plate in the guide groove, so that the metal plate is simultaneously restricted radially and axially in the guide groove.

[0019] As a further description of the above technical solution: the positions of the magnets correspond to the positions of the guide grooves, and the outer diameter of the plurality of annular protrusions is larger than the inner diameter of the guide holes.

[0020] The above technical solution maximizes the attraction of the magnet to the metal plate by aligning the magnet with the guide groove. The annular protrusion ensures that the retraction of the blade is limited to a safe limit, preventing the spring from undergoing permanent deformation due to excessive compression.

[0021] This utility model has the following beneficial effects: 1. In this utility model, the magnet built into the roller generates an attractive force on the metal plate, forming a uniform adsorption surface, so that the metal plate and the blade holder are firmly attracted and fixed in the guide groove. The axial movement of the metal plate and the blade holder can be restricted by the locking block and the locking groove. The blade can move up and down to a certain extent by the spring at the bottom of the mounting base. The blade can be quickly replaced by overcoming the magnetic force by external force, which can quickly adapt to the cutting needs of different materials and thicknesses.

[0022] 2. In this utility model, the magnet inside the roller can be replaced by opening the sealing cover. At the same time, the electromagnetic coil on the right side of the sealing cover can weaken the attraction of the magnet by different magnetic fields after being energized, so that the metal plate can be more easily removed from the guide groove. Meanwhile, the insulating frame can prevent the electromagnetic coil from affecting the roller after being energized. Attached Figure Description

[0023] Figure 1 This is a perspective view of a concealed blade type magnetic cutter roller proposed in this utility model; Figure 2 This is a front view of a concealed blade type magnetic cutter roller proposed in this utility model; Figure 3 This is a split view of the blade holder of a concealed blade type magnetic cutter roller proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the guide hole of a hidden blade type magnetic cutter roller proposed in this utility model; Figure 6 A cross-sectional view of the mounting bracket for a concealed blade magnetic cutter roller proposed in this utility model; Figure 7 This is a split view of the roller of a hidden blade type magnetic cutter roller proposed in this utility model.

[0024] Legend: 1. Roller; 2. Guide groove; 3. Magnetic attraction mechanism; 301. Metal plate; 302. Blade holder; 303. Groove; 304. Mounting groove; 305. Magnet; 306. Mounting tenon; 307. Assembly / disassembly assembly; 3071. Mounting base; 3072. Positioning groove; 3073. Wedge; 3074. Guide rod; 3075. Spring 1; 3076. Pull rod; 308. Limiting assembly; 3081. Guide post; 3082. Annular protrusion 3083, Guide hole; 3084, Spring 2; 309, Fixing assembly; 3091, Housing; 3092, Locking block; 3093, Slide groove; 3094, Slider; 3095, Spring 3; 3096, Locking groove; 4, Mounting mechanism; 401, Sealing cover; 402, Limiting groove; 403, Positioning block; 404, Screw; 405, Auxiliary release assembly; 4051, Insulating frame; 4052, Electromagnetic coil; 5, Limiting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 3 , Figure 4 and Figure 6This utility model provides an embodiment of a concealed blade type magnetic cutter roller, including a roller 1. The outer wall of the roller 1 has multiple guide grooves 2 for mounting metal plates 301 and blade holders 302. A magnetic attraction mechanism 3 is provided inside each of the guide grooves 2. An installation mechanism 4 is provided at the left end of the roller 1. The magnetic attraction mechanism 3 includes multiple metal plates 301. One end of each metal plate 301 is slidably connected to the inner wall of its corresponding guide groove 2, and the other end of each metal plate 301 is fixedly connected to a blade holder 302. When the metal plate 301 is attracted by a magnet 305, the blade holder 302 is also fixed. A groove 303 is provided on one side of each blade holder 302. The inner wall of the roller 1 has... There are multiple mounting slots 304. Multiple magnets 305 are disposed inside the roller 1. Each magnet 305 has a mounting tenon 306 fixedly connected to its outer wall. The outer walls of the mounting tenons 306 are slidably connected to the inner walls of their respective mounting slots 304. The magnets 305 are fixed to the inner walls of the roller 1 through the connection between the mounting tenons 306 and the mounting slots 304. Each of the multiple blade holders 302 has a disassembly / assembly assembly 307 on one side. Each of the multiple grooves 303 has a limit assembly 308 inside. Each of the multiple blade holders 302 has a fixing assembly 309 at its right end. The disassembly / assembly assembly 307 includes multiple mounting bases 3071 for mounting blades. The bottoms of the multiple mounting bases 3071 are respectively connected to the inner walls of the corresponding mounting slots 304. The inner wall of the corresponding groove 3071 is slidably connected. Multiple positioning grooves 3072 are provided on opposite sides of the inner wall of each mounting base 3071. Wedges 3073 are slidably connected to the inner walls of each positioning groove 3072. The wedges 3073 are used to fix the blade. A guide rod 3074 is fixedly connected to one end of each wedge 3073, guiding the sliding of the wedges 3073. A spring 3075 is provided on the outer side of each guide rod 3074. The springs' compression and rebound allow the wedges 3073 to return to their original position. One end of each spring 3075 is fixedly connected to one end of a corresponding wedge 3073, and the other end of each spring 3075 is fixedly connected to a corresponding positioning groove 307. The inner wall of the mounting base 3071 is fixedly connected to the mounting base 3072. A pull rod 3076 is provided on the opposite side of the outer wall of each mounting base 3071. One end of each guide rod 3074 passes through one side of the inner wall of the corresponding positioning groove 3072 and is fixedly connected to one side of the corresponding pull rod 3076. The pull rod 3076 drives the wedge block 3073 to move via the guide rod 3074, enabling the wedge block 3073 to fix the blade. The limiting assembly 308 includes multiple guide posts 3081, which are fixedly connected to the four corners of the bottom inner wall of the corresponding groove 303. An annular protrusion 3082 is fixedly connected to the bottom of the outer wall of each guide post 3081. Guide holes 3083 are provided at the four corners of the bottom of each mounting base 3071.The top of the outer wall of each of the multiple guide posts 3081 is slidably connected to the inner wall of the corresponding guide hole 3083. The guide hole 3083 and the guide post 3081 limit the position of the mounting base 3071. Multiple springs 3084 are fixedly connected to the bottom of the inner wall of each of the multiple grooves 303. The other end of each spring 3084 is fixedly connected to the bottom of the corresponding mounting base 3071. The springs 3084 allow the mounting base 3071 and the blade to move up and down to a certain extent. The fixing assembly 309 includes a housing 3091. Multiple housings 3091 are fixedly connected to the right end of the corresponding blade holder 302. A locking block 3092 is slidably connected to one end of the inner wall of each of the multiple housings 3091. Multiple slots 309 are opened on the right side of the outer wall of the roller 1. 6. One end of each of the plurality of locking blocks 3092 engages with the inner wall of a corresponding locking groove 3096. This engagement restricts the axial movement of the metal plate 301 and the blade holder 302. The other end of each of the plurality of locking blocks 3092 is fixedly connected to a spring 3095. The other end of each of the plurality of springs 3095 is fixedly connected to one side of the inner wall of a corresponding housing 3091. The springs 3095 can reset the locking blocks 3092. Each of the plurality of housings 3091 has a sliding groove 3093 on its right side. A slider 3094 is slidably connected to the inner side of each of the plurality of sliding grooves 3093. The left end of each of the plurality of sliders 3094 is fixedly connected to a corresponding locking block 3092. Pulling the slider 3094 moves the locking block 3092. Specifically, the metal plate 301 is inserted into the guide groove 2. The magnet 305 built into the roller 1 generates an attractive force, ensuring that the metal plate 301 and the blade holder 302 are firmly attracted and fixed within the guide groove 2. By pulling up the slider 3094, the locking block 3092 slides upward within the housing 3091, simultaneously compressing the spring 3095. When the metal plate 301 is fully inserted into the guide groove 2, the slider 3094 is released, and the spring 3095 releases pressure, pushing the locking block 3092 downward to engage with the slot 3096. This restricts the axial movement of the metal plate 301 and the blade holder 302, preventing slippage due to insufficient magnetic force generated by the magnet 305. The top of the blade holder 302 is provided with a mounting base 3071 for fixing the blade. The bottom sides of the blade have wedge grooves that match the wedge block 3073. By pressing the blade downward, the wedge block 3073 is compressed and... The blade retracts into the positioning groove 3072. As the blade continues to move downward, when the wedge 3073 is in the same position as the wedge groove, the rebound force of the spring 3075 causes the wedge 3073 to engage with the wedge groove, quickly fixing the blade. If the blade needs to be removed, pull the pull rods 3076 on both sides of the mounting base 3071. The pull rods 3076 drive the guide rod 3074, and the guide rod 3074 drives the wedge 3073 to disengage from the wedge groove, achieving quick disassembly. When the blade is working, the spring 3084 at the bottom of the mounting base 3071 allows the blade to move up and down to a certain extent, reducing wear when in contact with hard objects. At the same time, the annular protrusion 3082 limits the floating degree of the mounting base 3071. The sliding of the guide post 3081 and the guide hole 3083 provides a limit for the movement of the mounting base 3071, ensuring that the mounting base 3071 can only move radially and avoids deviation.

[0027] Reference Figure 2 and Figure 7The mounting mechanism 4 includes a sealing cover 401. The outer wall of the sealing cover 401 is slidably connected to the left end of the inner wall of the roller 1. The sealing cover 401 can seal the roller 1 to prevent the internal magnet 305 from being affected. The left end of the roller 1 has multiple limiting grooves 402. Multiple positioning blocks 403 are fixedly connected to the outer wall of the sealing cover 401. One end of each positioning block 403 is slidably connected to the inner wall of the corresponding limiting groove 402. The positioning blocks 403 can position the angle of the sealing cover 401. The inner wall of the sealing cover 401 is threaded. Multiple screws 404 are attached, one end of each screw 404 penetrates the inner wall of the sealing cover 401 and is threaded to the left side of the inner wall of the roller 1. The screws 404 can make the sealing cover 401 and the roller 1 stably connected. An auxiliary release component 405 is provided on the right side of the sealing cover 401. The auxiliary release component 405 includes an insulating frame 4051. The left end of the insulating frame 4051 is fixedly connected to the right end of the sealing cover 401. An electromagnetic coil 4052 is provided on the inner side of the insulating frame 4051. When the electromagnetic coil 4052 is energized, it weakens the attractive force of the magnet 305. Specifically, when magnet 305 needs to be replaced or repaired, screw 404 is unscrewed to open sealing cover 401, allowing replacement of magnet 305 inside roller 1. When the electromagnetic coil 4052 on the right side of sealing cover 401 is energized, it can generate different magnetic fields to weaken the attraction of magnet 305, thus making it easier to remove metal plate 301 from guide groove 2. At the same time, insulating frame 4051 prevents the electromagnetic coil 4052 from having an adverse effect on roller 1 after being energized. After replacing magnet 305, by precisely aligning the position of positioning block 403 with the position of limiting groove 402, positioning block 403 will restrict the rotation of sealing cover 401 and ensure accurate positioning of screw hole, thus facilitating screw 404 to be screwed into screw hole, ensuring that sealing cover 401 can be firmly fixed on the left side of roller 1.

[0028] Reference Figure 1 , Figure 4 and Figure 5 Each of the multiple metal plates 301 is fixedly connected to a limiting rod 5 on the opposite side. One end of each limiting rod 5 is slidably connected to one side of the inner wall of the corresponding guide groove 2. The limiting rod 5 restricts the radial displacement of the metal plate 301. The position of the magnet 305 corresponds to the position of the guide groove 2. The outer diameter of the multiple annular protrusions 3082 is larger than the inner diameter of the guide hole 3083. The annular protrusions 3082 control the maximum retraction amount. Specifically, the limiting rods 5 on both sides of the metal plate 301 are in the guide groove 2, which can limit the radial displacement of the metal plate 301 and prevent the metal plate 301 from detaching due to the weakening of the magnetic force of the magnet 305. The position of the magnet 305 and the guide groove 2 can better transmit the attraction force, so that the metal plate 301 can be stably connected in the guide groove 2. Since the size of the annular protrusion 3082 is larger than that of the guide hole 3083, when the guide post 3081 slides inside the guide hole 3083, it plays a guiding and limiting role on the mounting base 3071. The annular protrusion 3082 can limit the downward movement distance of the mounting base 3071, control the maximum retraction of the blade within a safe range, and avoid permanent deformation of the elastic element due to excessive compression.

[0029] Working principle: This device inserts a metal plate 301 into the guide groove 2. A magnet 305 built into the roller 1 attracts the metal plate 301, forming a uniform adsorption surface. This firmly attracts and fixes the metal plate 301 and the blade holder 302 in the guide groove 2. Lifting the slider 3094 causes the locking block 3092 to slide upwards within the housing 3091, simultaneously compressing the spring 3095. After the metal plate 301 is inserted into the guide groove 2, the slider 3094 is released, and the spring... The release of spring force from the third 3095 pushes the locking block 3092 downward to engage with the locking groove 3096 opened in the roller 1, which can restrict the axial movement of the metal plate 301 and the blade holder 302, preventing the metal plate 301 from sliding due to insufficient magnetic force. The top of the blade holder 302 has a mounting seat 3071 for fixing the blade. The bottom sides of the blade have wedge grooves that match the wedge block 3073. By pressing the blade into the mounting seat 3071, the wedge block 3073 is subjected to... As the blade continues to descend, the wedge 3073 retracts into the positioning groove 3072. When the wedge 3073 is aligned with the wedge groove, the spring 3075 causes the wedge 3073 to engage with the wedge groove, quickly securing the blade. When the blade needs to be removed, pull the pull rods 3076 on both sides of the mounting base 3071. The pull rods 3076 drive the guide rod 3074, which in turn drives the wedge 3073 to disengage from the wedge groove, allowing for quick removal of the blade. During operation, the spring 3084 at the bottom of the mounting base 3071 allows the blade to move up and down to a certain extent, avoiding wear from contact with hard objects. At the same time, the sliding of the guide post 3081 and the guide hole 3083 limits the movement of the mounting base 3071, allowing the mounting base 3071 to move only radially, preventing the movement of the mounting base 3071 from deviating. Meanwhile, the annular protrusion 3082 can limit the floating of the mounting base 3071. Furthermore, when the magnetic force of the magnet 305 inside the roller 1 weakens and needs to be replaced for maintenance, the magnet 305 inside the roller 1 can be replaced by tightening the screws 404 one by one and removing the screws 404 from the sealing cover 401. At the same time, the electromagnetic coil 4052 on the right side of the sealing cover 401 can weaken the attraction of the magnet 305 by influencing different magnetic fields after being energized, making it easier to remove the metal plate 301 from the guide groove 2. Meanwhile, the insulating frame 4051 can prevent the electromagnetic coil 4052 from affecting the roller 1 after being energized. After replacing the magnet 305, the positioning block 403 can restrict the rotation of the sealing cover 401 and position the screw hole by aligning the positioning block 403 with the position of the limiting groove 402, making it easy for the screw 404 to be screwed into the screw hole and fix the sealing cover 401 on the left side of the roller 1.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concealed blade type magnetic cutter roller, comprising a roller (1), characterized in that: The outer wall of the roller (1) is provided with multiple guide grooves (2), and a magnetic attraction mechanism (3) is provided inside the multiple guide grooves (2). An installation mechanism (4) is provided at the left end of the roller (1). The magnetic attraction mechanism (3) includes multiple metal plates (301). One end of each metal plate (301) is slidably connected to the inner wall of the corresponding guide groove (2). The other end of each metal plate (301) is fixedly connected to a blade holder (302). A groove (303) is provided on one side of each blade holder (302). Multiple mounting grooves (304) are provided on the inner wall of the roller (1). Multiple magnets (305) are provided inside the roller (1). Mounting tenons (306) are fixedly connected to the outer walls of each magnet (305). The outer walls of each mounting tenon (306) are slidably connected to the inner walls of the corresponding mounting grooves (304). A disassembly and assembly component (307) is provided on one side of each blade holder (302). A limit component (308) is provided inside each groove (303). A fixing component (309) is provided on the right end of each blade holder (302).

2. The concealed blade type magnetic cutter roller according to claim 1, characterized in that: The installation mechanism (4) includes a sealing cover (401). The outer wall of the sealing cover (401) is slidably connected to the left end of the inner wall of the roller (1). The left end of the roller (1) is provided with multiple limiting grooves (402). Multiple positioning blocks (403) are fixedly connected to the outer wall of the sealing cover (401). One end of each of the multiple positioning blocks (403) is slidably connected to the inner wall of the corresponding limiting groove (402). Multiple screws (404) are threadedly connected to the inner wall of the sealing cover (401). One end of each of the multiple screws (404) penetrates the inner wall of the sealing cover (401) and is threadedly connected to the left side of the inner wall of the roller (1). An auxiliary release component (405) is provided on the right side of the sealing cover (401).

3. The concealed blade type magnetic cutter roller according to claim 1, characterized in that: The disassembly / assembly assembly (307) includes multiple mounting bases (3071). The bottoms of the multiple mounting bases (3071) are slidably connected to the inner walls of corresponding grooves (303). Multiple positioning grooves (3072) are provided on the opposite side of the inner walls of the multiple mounting bases (3071). Wedges (3073) are slidably connected to the inner walls of the multiple positioning grooves (3072). A guide rod (3074) is fixedly connected to one end of each of the multiple wedges (3073). The outer sides of the multiple guide rods (3074) are provided with... There is a spring (3075), one end of each spring (3075) is fixedly connected to one end of a corresponding wedge (3073), and the other end of each spring (3075) is fixedly connected to the inner wall of a corresponding positioning groove (3072). Each of the outer walls of the mounting bases (3071) is provided with a pull rod (3076) on the opposite side. One end of each guide rod (3074) passes through one side of the inner wall of the corresponding positioning groove (3072) and is fixedly connected to one side of the corresponding pull rod (3076).

4. A concealed blade type magnetic cutter roller according to claim 3, characterized in that: The limiting component (308) includes multiple guide posts (3081), which are fixedly connected to the four corners of the bottom inner wall of the corresponding groove (303). The bottom outer wall of each guide post (3081) is fixedly connected to an annular protrusion (3082). The bottom four corners of the mounting base (3071) are provided with guide holes (3083). The top outer wall of each guide post (3081) is slidably connected to the inner wall of the corresponding guide hole (3083). The bottom inner wall of each groove (303) is fixedly connected to multiple springs (3084), and the other end of each spring (3084) is fixedly connected to the bottom of the corresponding mounting base (3071).

5. A concealed blade type magnetic cutter roller according to claim 1, characterized in that: The fixing component (309) includes a housing (3091), and multiple housings (3091) are fixedly connected to the right end of the corresponding blade holder (302). A locking block (3092) is slidably connected to one end of the inner wall of each of the multiple housings (3091). Multiple slots (3096) are provided on the right side of the outer wall of the roller (1). One end of each locking block (3092) is engaged with the inner wall of the corresponding slot (3096). A spring three (3095) is fixedly connected to the other end of each of the multiple locking blocks (3092). The other end of each of the multiple spring three (3095) is fixedly connected to one side of the inner wall of the corresponding housing (3091). A sliding groove (3093) is provided on the right side of each of the multiple housings (3091). A slider (3094) is slidably connected to the inner side of each of the multiple sliding grooves (3093). The left end of each of the multiple sliders (3094) is fixedly connected to the corresponding locking block (3092).

6. A concealed blade type magnetic cutter roller according to claim 2, characterized in that: The auxiliary release assembly (405) includes an insulating frame (4051), the left end of which is fixedly connected to the right end of the sealing cover (401), and an electromagnetic coil (4052) is provided on the inner side of the insulating frame (4051).

7. A concealed blade type magnetic cutter roller according to claim 1, characterized in that: Each of the multiple metal plates (301) is fixedly connected to a limiting rod (5) on the opposite side, and one end of each limiting rod (5) is slidably connected to one side of the inner wall of the corresponding guide groove (2).

8. A concealed blade type magnetic cutter roller according to claim 4, characterized in that: The positions of the magnets (305) correspond to the positions of the guide grooves (2), and the outer diameter of the multiple annular protrusions (3082) is larger than the inner diameter of the guide holes (3083).

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