Novel power hinge knife

Abstract

The novel power hinge cutter comprises a mother cutter, a side cutter and a cover plate arranged on one side of the mother cutter, bosses A-C are sequentially inwards arranged on one side of the mother cutter from top to bottom, and a mounting groove A used for mounting a reset mechanism and a mounting groove B used for mounting a driving mechanism are formed in the bottom ends of the bosses A-B correspondingly; the side wall of the boss C is provided with a first track groove for controlling the side tool to rotate, the driving mechanism pushes the side tool to move downwards through driving force provided by an external power unit, the reset mechanism is used for driving the driving mechanism to reset the side tool through the self-reset function after the driving force is relieved, and the side tool is arranged between the boss C and the cover plate. The executing end of the side cutter covers the bottom end of the mother cutter, the cover plate is fixed to the boss B through a plurality of threaded assemblies, the cover plate sequentially covers the mounting groove A, the reset mechanism, the driving mechanism, the boss B and the side cutter from top to bottom, and a through groove allowing an external power unit to be connected with the driving mechanism is formed in the outer wall of the cover plate.

Description

Technical Field

[0001] The invention patent relates to the field of hinge knife technology, specifically a new type of power hinge knife. Background Art

[0002] The hinge knife used in the bending machine, also known as the bending tool, is an indispensable tool in the bending process of metal sheets. In the bending operation, the hinge knife plays a vital role, and its quality and usage directly affect the accuracy and quality of the bent parts. The hinge knife is usually composed of two parts: the mother knife and the side knife. The mother knife is generally composed of a mother blade and a knife body. The knife body is used to install the side knife and bear the force during the bending process. The execution end of the mother knife and the side knife is the part that directly contacts the plate. The existing mother blade is in daily use. Due to the long-term bearing of the force during the bending process, it is very easy to cause the problem of fracture between the mother blade and the knife body. For this reason, we have invented a type of power hinge knife that only uses the side knife to bend the metal sheet.

[0003] The purpose of the present invention is to provide a new type of power hinge knife to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the patent of the present invention provides the following technical solutions: a new type of power hinge knife, comprising a mother knife, a side knife and a cover plate arranged on one side of the mother knife, the mother knife is close to the cover plate and is provided with two depressions inwardly from top to bottom in sequence, and a boss AC is formed, and the bottom ends of the side walls of the boss AB are respectively provided with mounting grooves A for installing a reset mechanism and mounting grooves B for installing a driving mechanism, and the side walls of the boss C are provided with a first track groove for controlling the side knife to telescopically rotate, the driving mechanism pushes the side knife downward by the driving force provided by the external power unit, and the reset mechanism is used to drive the driving mechanism to reset the side knife through the self-reset function after the external power unit releases the driving force, the side knife is arranged between the boss C and the cover plate, and the execution end of the side knife covers the bottom end of the mother knife, the cover plate is fixed to the boss B by a plurality of threaded components, and the cover plate covers the mounting groove A, the reset mechanism, the driving mechanism, the boss B and the side knife in sequence from top to bottom, and the outer wall of the cover plate is provided with a through groove for the external power unit to connect the driving mechanism.

[0005] Furthermore, the side cutter includes a connecting block and a side blade covering the bottom end of the mother knife, the side blade is integrally arranged at the bottom end of the connecting block, and a clearance groove is arranged from the middle to the bottom end of the side wall of the connecting block located on the rotating side of the side cutter, the inner wall of the clearance groove is inclined inward from top to bottom, and the inner wall of the clearance groove forms an angle of 90° with the top end of the side blade.

[0006] Furthermore, a limit plate is installed between the boss C and the cover plate, and the limit plate is arranged on the rotating side of the side cutter.

[0007] Furthermore, the cross-section of the limit plate is L-shaped, and the bottom end of the cover plate is provided with a connecting groove for installing the L-shaped end of the limit plate. The inner wall length of the limit plate is equal to the cross-sectional length of the side knife, and the inner wall of the L-shaped end of the limit plate is fitted and slidably arranged with the outer wall of the side knife.

[0008] Furthermore, the reset mechanism is a reset spring, and the top of the reset spring is fixed in the mounting groove A by a threaded assembly, and the driving mechanism includes a driving block and a driving rod slidably arranged in the mounting groove B, and the bottom end of the driving block is connected to the top end of the connecting block through a first limit pin, and the execution end of the driving rod is sleeved on the bottom end of the reset spring and is rotatably connected to the top end of the driving block, and the connecting end of the driving rod passes through the through groove and is connected to the execution end of the external power unit, and the middle part of the connecting block is rotatably connected with a second limit pin, and the first limit pin and the second limit pin are close to the mother knife. The end passes through the connecting block and is cold-assembled with a first bearing member and a second bearing member, respectively, and the outer walls of the first bearing member and the second bearing member are both in contact with the inner wall of one side of the first track groove.

[0009] Furthermore, the longitudinal cross-section of the driving block is gradually decreasing from top to bottom, and the upper and lower ends of the driving block are both arranged in arc shapes protruding outward, and the top of the inner wall of the mounting groove B matches the top of the driving block.

[0010] Furthermore, a limit strip is arranged at the top of the driving block along the outer wall direction, and a limit slot with an open bottom is arranged along the inner wall of the mounting slot B, and the limit slot is used for the limit strip to be inserted and slide up and down.

[0011] Furthermore, it also includes a mounting plate arranged between the side knife and the boss C, the boss C is provided with a mounting groove C, the mounting plate is installed in the mounting groove C through a plurality of threaded components, the mounting plate is provided with a second track groove whose position matches the first track groove, the lateral width of the inner wall of the second track groove is smaller than the diameter of the first bearing member, and the outer walls of the first limit pin and the second limit pin are both in contact with the inner wall of the second track groove and are slidably connected.

[0012] Furthermore, the top end of the side blade includes a flat surface, a limiting surface located on the rotation side of the side blade, a first blade surface away from the rotation side of the side blade, and a second blade surface away from the side of the cover plate. The limiting surface, the first blade surface and the second blade surface are all inclined downward from the edge of the flat surface to the direction of the outer wall of the corresponding side blade. The bottom end of the mother knife located on the rotation side of the side knife is integrally provided with a correction block, and the correction block extends from the bottom end of the mother knife at one end away from the cover plate. The flat surface is used to fit with the bottom end of the mother knife in a vertical state, the bottom end of the correction block is inclined, and the bottom end of the correction block is used to fit with the limiting surface of the side blade in a vertical state, and the first blade surface and the second blade surface are both used to bend the workpiece.

[0013] Furthermore, a pressure relief surface is provided at the bottom end of the side blade close to the cover plate, and the pressure relief surface is inclined downward from the cover plate to the side blade.

[0014] The beneficial effects achieved by the present invention are: By setting the executing end of the side knife to cover the bottom end of the mother knife, when the hinge knife is bending the metal sheet, the executing end of the side knife is in direct contact with the surface of the metal sheet, while the bottom end of the mother knife is covered by the side knife, so that the mother knife will not directly rub and collide with the metal sheet during the processing, thereby effectively protecting the mother knife and extending its service life.

[0015] By designing a clearance groove and setting the inner wall of the clearance groove and the top of the side blade at a 90° angle, sufficient space is provided for the side cutter to be pressed down and rotated, effectively avoiding unnecessary collisions between the side cutter and other tools, while ensuring the smooth progress of the processing process.

[0016] By arranging a limit plate on the rotating side of the side cutter, it is further prevented that the side cutter collides with other cutters when it is pressed down and rotated.

[0017] By setting the longitudinal cross-section of the driving block to a gradually decreasing trend from top to bottom, the driving block can obtain more room for movement when the side cutter moves up / down and rotates. At the same time, the arc-shaped settings at the upper and lower ends of the driving block help reduce the interference between the driving block and other components, ensuring that the driving block can move more freely and smoothly, thereby improving the flexibility and efficiency of the overall mechanism.

[0018] By setting the limit strips and limit grooves, the risk of the drive block detaching from the mounting groove B during movement is effectively avoided, ensuring that the drive block can run smoothly within the predetermined track, thereby reducing the mechanical jamming caused by detaching from the track and improving the smoothness of equipment operation.

[0019] Through the setting of the mounting plate and the precise matching of the first track groove and the second track groove, the first bearing member, the second bearing member, the first limit pin and the second limit pin are effectively limited, which significantly reduces the shaking of these components during the movement, thereby improving the stability of the side knife during the movement.

[0020] Through the fitting design of the limiting surface and the correction block, when the side cutter is subjected to force, it can be effectively prevented from deviating to the rotating side, thereby significantly improving the accuracy of the bent workpiece. At the same time, the fitting of the flat surface and the bottom end of the mother cutter not only ensures that the downward force during bending can act on the side cutter edge evenly and stably through the flat surface, but also increases the stability of the overall structure.

[0021] The design of the pressure relief surface effectively transfers the pressure when the workpiece is bent from the connection between the side blade and the connecting block, thereby preventing the fragile part from being damaged or broken due to excessive force, thereby increasing the service life of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a new type of power hinge knife in the embodiment; Figure 2 It is a structural schematic diagram of a novel power hinge knife in the embodiment in a disassembled state; Figure 3 It is a schematic diagram of the structure of the cover plate and the mother knife in the embodiment in the disassembled state; Figure 4 It is a front view of the mother knife, the side knife, the reset mechanism and the driving mechanism in the embodiment in the connected state; Figure 5 for Figure 4 The main view of the middle and side cutters in the rotating state; Figure 6 It is a lower cross-sectional view of the mother knife, the side knife and the cover plate in the embodiment in the connected state; Figure 7 It is a structural view of the side knife and the mother knife in the longitudinally exploded state in the embodiment. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings.

[0024] like Figure 1-4As shown, the present invention discloses a new type of power hinge knife, including: a mother knife 1, a side knife 2 and a cover plate 3 arranged on one side of the mother knife 1, two depressions are arranged inward from top to bottom on one side of the mother knife 1 close to the cover plate 3, and a boss A-C11-13 is formed, and the bottom ends of the side walls of the bosses A-B11-12 are respectively provided with a mounting groove A111 for installing a reset mechanism 4 and a mounting groove B121 for installing a driving mechanism 5, and the side wall of the boss C13 is provided with a first track groove 131 for controlling the side knife 2 to telescopically rotate, and the driving mechanism 5 is driven by an external power unit (the drawing is for display) The driving force provided by the external power unit (not described later) pushes the side knife 3 to move downward, and the reset mechanism 4 is used to drive the driving mechanism 5 to reset the side knife 3 through the self-reset function after the external power unit releases the driving force. The side knife 2 is arranged between the boss C13 and the cover plate 3, and the execution end of the side knife 2 covers the bottom end of the mother knife 1. The cover plate 3 is fixed to the boss B12 through a plurality of threaded components, and the cover plate 3 covers the installation groove A111, the reset mechanism 4, the driving mechanism 5, the boss B12 and the side knife 2 from top to bottom in sequence, and the outer wall of the cover plate 3 is provided with a through groove 31 for the external power unit to connect to the driving mechanism.

[0025] Based on the above structure, Figure 1-5 As shown, when the hinge knife is pressed down, the execution end of the external power unit is retracted, the reset mechanism 4 contracts, and the reset mechanism 4 drives the side knife 2 to move up and rotate along the first track groove 131 through the driving mechanism 5 until the bottom end of the side knife 2 contacts the surface of the metal sheet, the hinge knife continues to be pressed down, the side knife 2 continues to move up and rotate until the top end of the side knife 2 is tightly fitted with the top end of the inner wall of the boss C131, the bottom end of the side knife 2 is tightly fitted with the surface of the metal sheet, and the metal sheet is bent. In this process, only the execution end of the side knife 2 is subjected to force, thereby solving the problem of easy fracture between the mother blade and the knife body; After the metal sheet bending process is completed, the hinge knife moves up, the execution end of the external power unit extends, and the execution end of the external power unit pushes the side knife 2 to move up and rotate along the first track groove 131 through the driving mechanism 5. At the same time, during this process, the reset mechanism 4 is stretched by force.

[0026] Further, such as Figure 2-5 As shown, in order to avoid the side knife from colliding with other knives when it is pressed down and rotated, and at the same time to avoid other knives from limiting the downward rotation of the side knife, which leads to incomplete downward rotation of the side knife, a connecting block 21 and a side blade 22 covering the bottom end of the mother knife 1 are included, and the side blade 22 is integrally arranged at the bottom end of the connecting block 21. A clearance groove 23 is arranged from the middle to the bottom end of the side wall of the connecting block 21 located on the rotating side of the side knife 2. The inner wall of the clearance groove 23 is inclined inwardly from top to bottom, and the inner wall of the clearance groove 23 forms a 90° angle with the top end of the side blade 22. Specifically, as shown in FIG. Figure 5As shown, when the side knife is pressed down and rotated completely, the inner wall of the clearance groove 23 is vertically parallel to the side wall of the mother knife 1.

[0027] Further, such as Figure 2-3 As shown, in order to further prevent the side cutter from colliding with other cutters when it is pressed down and rotated, a limit plate 8 is installed between the boss C13 and the cover plate 3. The limit plate 8 is connected to the cover plate 3 through a threaded assembly. The limit plate 8 is arranged on the rotating side of the side cutter 2. When the side cutter 2 rotates, the bottom end of the give way groove 23 takes the top end of the give way groove 23 as the center of the circle and rotates toward the rotating side until the inner wall of the give way groove 23 is vertical at 90°, and the give way groove 23 fits with the inner wall of the limit plate 8, and the limit plate 8 limits the side cutter 2.

[0028] Further, such as Figure 6 As shown, in order to facilitate the installation of the limit plate 8, the cross-section of the limit plate 8 is L-shaped, and the bottom end of the cover plate 3 is provided with a connecting groove 32 for installing the L-shaped end of the limit plate 8. The inner wall length of the limit plate 8 is equal to the cross-sectional length of the side knife 2, and the inner wall of the L-shaped end of the limit plate 8 and the outer wall of the side knife 2 are fitted and slidably arranged.

[0029] Further, such as Figure 2-4 As shown, the reset mechanism 4 is a reset spring, and the top of the reset spring is fixed in the installation groove A111 by a threaded assembly, and the driving mechanism 5 includes a driving block 51 and a driving rod 52 slidably arranged in the installation groove B121, and the bottom end of the driving block 51 is transmission-connected to the top end of the connecting block 21 through the first limit pin 6, and the execution end of the driving rod 52 is sleeved with the bottom end of the reset spring and is rotatably connected to the top end of the driving block 51, and the connecting end of the driving rod 52 passes through the through groove 31 and is connected to the execution end of the external power unit, and the middle part of the connecting block 21 is rotatably connected with the second limit pin 61, and the ends of the first limit pin 6 and the second limit pin 61 close to the mother knife 1 both penetrate the connecting block 21, and are cold-assembled with the first bearing member 62 and the second bearing member respectively, and the first bearing member 62 and the second bearing member have the same structure, and the outer walls of the first bearing member 62 and the second bearing member are both in contact with the inner wall of one side of the first track groove 131; Specifically, Figure 1-5 As shown, when the hinge knife is working, the execution end of the external power unit controls the driving rod 52 to move up and down by extension and retraction. The driving rod 52 pushes the side knife 2 to move up and down through the driving block 51 and the first limit pin 6. During the movement of the side knife 2, the second limit pin 61 is driven to move up and down. The first bearing member 62 and the second bearing member both move up and down and rotate. During this process, the first track groove 131 limits the movement of the first bearing member 62 and the second bearing, thereby driving the side knife 2 to move up / down and rotate. During the rotation of the side knife 2, it rotates around the center of the first bearing member 62 as the axis.

[0030] Further, such as Figure 2-4 As shown, in order to give the driving block more room for movement when the side cutter moves up / down and rotates, the longitudinal cross-section of the driving block 51 is gradually reduced from top to bottom, and the upper and lower ends of the driving block 51 are both arranged in an arc shape convex outward, and the top of the inner wall of the mounting groove B121 matches the top of the driving block 51, as shown in FIG. Figure 2 As shown, when the top of the side knife 2 is tightly fitted with the top of the inner wall of the boss C131, the center of the first limit pin 6 is perpendicular to the center of the drive rod 52, as shown in FIG. Figure 5 As shown, when the side knife 2 is fully pressed down and rotated, the center of the first limit pin 6 is inclined relative to the center of the drive rod 52. At this time, the bottom end of the drive block 51 rotates with the center of the drive rod 52 as the axis.

[0031] Further, such as Figure 2 and 4 As shown, in order to prevent the driving block from detaching from the mounting slot B during movement and causing mechanical jamming, a limit strip 511 is provided at the top of the driving block 51 along the outer wall direction, and a limit slot 122 with an open bottom is provided along the inner wall of the mounting slot B121. The limit slot 122 is used for the limit strip 511 to be inserted and slide up and down. At the same time, the arc-shaped limit strip 511 can always maintain connection with the limit slot 122 when the driving block 51 rotates.

[0032] Further, such as Figure 2-4 As shown, in order to prevent the first bearing member and the second bearing from shaking when they move in the first track groove, causing the side knife to shake when it moves, and then causing mechanical jamming when the hinge knife works, it also includes a mounting plate 7 arranged between the side knife 2 and the boss C13, the boss C13 is provided with a mounting groove C132, the mounting plate 7 is installed in the mounting groove C132 through a plurality of threaded components, and the mounting plate 7 is provided with a second track groove 71 whose position matches the first track groove 131. The lateral width of the inner wall of the second track groove 71 is smaller than the diameter of the first bearing member 62, the outer walls of the first limit pin 6 and the second limit pin 61 are both in contact with and slidably connected to the inner wall of the second track groove 71, and the first bearing member The outer walls of the first and second bearings 62 and 61 are respectively fitted and slidably connected to the inner wall of the mounting plate 7 and the inner wall of the first track groove 131 away from the cover plate 3. The outer walls of the first limit pin 6 and the second limit pin 61 are fitted and slidably connected to the inner wall of the second track groove 71. During the movement of the side knife 2, the mounting plate 7 and the first track groove 131 limit the first bearing member 62 and the second bearing to avoid shaking during the movement of the first bearing member 62 and the second bearing. The second track groove 71 limits the first limit pin 6 and the second limit pin 61 to avoid shaking during the movement of the first limit pin 6 and the second limit pin 61, thereby avoiding the shaking generated during the movement of the side knife, which causes mechanical jamming when the hinge knife is working.

[0033] Furthermore, the outer wall of the side knife 2 is respectively fitted with and slidably connected to the inner wall of the boss C13 and the inner wall of the cover plate 3, further avoiding the shaking generated when the side knife moves, which may cause mechanical jamming when the hinge knife works.

[0034] Further, such as Figure 2-4 As shown in , 6 and 7, the top of the side blade 22 includes a flat surface 221, a limiting surface 222 located on the rotating side of the side blade 22, a first blade surface 223 away from the rotating side of the side blade 22, and a second blade surface 224 away from the side of the cover plate 3. The limiting surface 222, the first blade surface 223 and the second blade surface 224 are all arranged to be inclined downward from the edge of the flat surface 221 to the outer wall direction of the corresponding side blade 22. A correction block 14 is integrally provided at the bottom end of the mother knife 1 located on the rotating side of the side knife 2. The correction block 14 extends from the bottom end of the mother knife 1 at one end away from the cover plate 3. The flat surface 221 is used to fit with the bottom end of the mother knife 1 in a vertical state. The bottom end of the correction block 14 is inclined, and the bottom end of the correction block 14 is used to fit with the limiting surface 222 of the side blade 22 in a vertical state. The first blade surface 223 and the second blade surface 224 are both used to bend the workpiece. Specifically, when the workpiece is bent, the side knife 2 contracts until the bottom end of the side blade 22 is horizontal, and the correction block 14 fits with the limiting surface 222, so that when the side knife 2 is subjected to force, it cannot deviate to the rotating side. At the same time, the flat surface 221 fits with the bottom end of the mother knife 1, so that the downward pressure during bending acts on the side blade 22 through the flat surface 221, and the first blade surface 223 / the second blade surface 224 bends and fixes the workpiece during rotation.

[0035] Further, such as Figure 2-4 As shown, a pressure relief surface 225 is provided at the bottom end of the side blade 22 close to the cover plate 3, and the pressure relief surface 225 is inclined downward from the cover plate to the side blade 22. Due to the setting of the pressure relief surface 225, when the workpiece is bent, the pressure relief surface 225 is not subjected to force, so that the pressure acts on the bottom end of the side blade 22 below the mother knife 1. After the side blade 22 is subjected to force, the force is applied to the mother knife 1 through the flat surface 221, thereby achieving the goal that when the workpiece is bent, the pressure completely acts on the mother knife 1 through the flat surface, thereby avoiding the connection between the side blade 22 and the connecting block 21 from being broken due to the force.

[0036] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and invention concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new type of power hinge knife, characterized in that: include: A mother knife (1), a side knife (2) and a cover plate (3) arranged on one side of the mother knife (1); a side of the mother knife (1) close to the cover plate (3) is provided with bosses AC (11-13) inwardly arranged from top to bottom; a mounting groove A (111) for mounting a reset mechanism (4) and a mounting groove B (121) for mounting a drive mechanism (5) are respectively arranged at the bottom end of the side wall of the boss AB (11-12); a first track groove (131) for controlling the side knife (2) to rotate is arranged on the side wall of the boss C (13); the drive mechanism (5) drives the side knife (3) to move downward by means of a driving force provided by an external power unit; The reset mechanism (4) is used to drive the driving mechanism (5) to reset the side knife (3) through a self-reset function after the external power unit releases the driving force. The side knife (2) is arranged between the boss C (13) and the cover plate (3), and the execution end of the side knife (2) covers the bottom end of the mother knife (1). The cover plate (3) is fixed to the boss B (12) through a plurality of threaded components, and the cover plate (3) sequentially covers the installation groove A (111), the reset mechanism (4), the driving mechanism (5), the boss B (12) and the side knife (2) from top to bottom. The outer wall of the cover plate (3) is provided with a through groove (31) for connecting the external power unit to the driving mechanism.

2. A new type of power hinge knife according to claim 1, characterized in that: The side knife (2) comprises a connecting block (21) and a side blade (22) covering the bottom end of the mother knife (1); the side blade (22) is integrally arranged at the bottom end of the connecting block (21); a clearance groove (23) is arranged from the middle to the bottom end of the side wall of the connecting block (21) located on the rotating side of the side knife (2); the inner wall of the clearance groove (23) is inclined inwardly from top to bottom, and the inner wall of the clearance groove (23) forms an angle of 90° with the top end of the side blade (22).

3. A new type of power hinge knife according to claim 2, characterized in that: A limit plate (8) is installed between the boss C (13) and the cover plate (3), and the limit plate (8) is arranged on the rotating side of the side knife (2).

4. A new type of power hinge knife according to claim 3, characterized in that: The cross section of the limiting plate (8) is L-shaped, and the bottom end of the cover plate (3) is provided with a connecting groove (32) for mounting the L-shaped end of the limiting plate (8). The inner wall length of the limiting plate (8) is equal to the cross-sectional length of the side knife (2), and the inner wall of the L-shaped end of the limiting plate (8) and the outer wall of the side knife (2) are fitted and slidably arranged.

5. A new type of power hinge knife according to claim 4, characterized in that: The reset mechanism (4) is a reset spring, and the top end of the reset spring is fixed in the mounting groove A (111) by a threaded assembly. The driving mechanism (5) comprises a driving block (51) and a driving rod (52) slidably arranged in the mounting groove B (121). The bottom end of the driving block (51) is transmission-connected to the top end of the connecting block (21) by a first limit pin (6). The execution end of the driving rod (52) is sleeved on the bottom end of the reset spring and is rotationally connected to the top end of the driving block (51). The connecting end of the driving rod (52) passes through the through slot (31) and is connected to the execution end of the external power unit. The middle part of the connecting block (21) is rotatably connected to a second limit pin (61). The ends of the first limit pin (6) and the second limit pin (61) close to the mother knife (1) both pass through the connecting block (21) and are cold-assembled with a first bearing member (62) and a second bearing member respectively. The outer walls of the first bearing member (62) and the second bearing member are both in contact with the inner wall of one side of the first track groove (131).

6. A new type of power hinge knife according to claim 5, characterized in that: The longitudinal cross-section of the driving block (51) is gradually decreasing from top to bottom, and the upper and lower ends of the driving block (51) are both arranged in an arc shape protruding outwards, and the top end of the inner wall of the mounting groove B (121) matches the top end of the driving block (51).

7. A new type of power hinge knife according to claim 6, characterized in that: A limit strip (511) is arranged at the top end of the driving block (51) along the outer wall direction, and a limit slot (122) with an open bottom end is arranged along the inner wall of the installation slot B (121), and the limit slot (122) is used for the limit strip (511) to be inserted and slide up and down.

8. A new type of power hinge knife according to any one of claims 5 to 7, characterized in that: The invention also comprises a mounting plate (7) arranged between the side cutter (2) and the boss C (13), the boss C (13) being provided with a mounting groove C (132), the mounting plate (7) being installed in the mounting groove C (132) via a plurality of threaded components, the mounting plate (7) being provided with a second track groove (71) whose position matches the first track groove (131), the lateral width of the inner wall of the second track groove (71) being smaller than the diameter of the first bearing member (62), and the outer walls of the first limiting pin (6) and the second limiting pin (61) both being in contact with and slidably connected to the inner wall of the second track groove (71).

9. The new type of power hinge knife according to claim 8, characterized in that: The top end of the side blade (22) comprises a flat surface (221), a limiting surface (222) located on the rotating side of the side blade (22), a first blade surface (223) away from the rotating side of the side blade (22), and a second blade surface (224) away from the side of the cover plate (3); the limiting surface (222), the first blade surface (223), and the second blade surface (224) are all arranged to be inclined downward from the edge of the flat surface (221) to the outer wall of the corresponding side blade (22); the mother blade located on the rotating side of the side blade (2) The bottom end of the mother knife (1) is integrally provided with a correction block (14); one end of the correction block (14) away from the cover plate (3) extends out of the bottom end of the mother knife (1); the flat surface (221) is used to fit with the bottom end of the mother knife (1) in a vertical state; the bottom end of the correction block (14) is inclined, and the bottom end of the correction block (14) is used to fit with the limiting surface (222) of the side blade (22) in a vertical state; the first blade surface (223) and the second blade surface (224) are both used to bend the workpiece.

10. The new type of power hinge knife according to claim 9, characterized in that: A pressure relief surface (225) is provided at the bottom end of the side blade (22) close to the cover plate (3), and the pressure relief surface (225) is arranged to be inclined downward in a direction from the cover plate to the side blade (22).

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