Blade sharpener

Abstract

To provide a cutter sharpener having a cutter clamping mechanism, a sharpening rod mechanism, and an attitude adjusting mechanism.SOLUTION: The tool clamping mechanism comprises a tool clamping assembly for clamping a tool and an angle adjusting assembly for adjusting a rotation angle of the tool on a first plane, the sharpening rod mechanism clamps a grindstone for sharpening the tool, the posture adjusting mechanism is connected to the sharpening rod mechanism and comprises a vertical rail, a sliding body and a rotating body, the sliding body is connected to the sharpening rod mechanism, and the sharpening rod mechanism is configured to move in a first direction; The rotating body is slidably mounted on the longitudinal rail, the rotating body is connected to the longitudinal rail such that the sharpening rod mechanism can rotate in a direction parallel to the second plane, the sliding body is provided with a mounting portion for connecting the sharpening rod mechanism, the grinding wheel of the sharpening rod mechanism is movably arranged in the second direction relative to the mounting portion, the first plane and the second plane are not parallel, and the first direction and the second direction are not parallel.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field of knife sharpeners, and more particularly to knife sharpeners. [Background technology]

[0002] The most common fixed-angle knife sharpeners can accommodate various shapes of blades and different sharpening needs by adjusting the angle of the sharpening rod, but the knife clamp is basically non-adjustable and can only clamp the blade at a fixed angle. The sharpening angle can be adjusted by adjusting the height or angle of the sharpening rod, but the adjustable range is limited, making it difficult to better meet user needs. Some knife sharpeners allow the angle to be adjusted, but the adjustment structure and method are cumbersome and difficult to use.

[0003] Conventional methods for adjusting the position generally involve adjusting the height of the sharpening rod by using screws, pins, etc., but this adjustment method is relatively tedious, making it difficult to make quick adjustments, and the operation feeling during adjustment is not smooth, which affects the user experience. In addition, after the sharpening rod comes into contact with the blade, the conventional knife sharpener cannot move and maintain a constant angle during the sharpening process. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION An object of the present invention is to provide a knife sharpener that solves at least one of the above problems. [Means for solving the problem]

[0005] To achieve the above object, the present invention provides a knife sharpener including a blade clamping mechanism, a sharpening rod mechanism, and an attitude adjustment mechanism. The blade clamping mechanism includes a blade clamping assembly for clamping a blade and an angle adjustment assembly for adjusting the rotation angle of the blade on a first plane. The sharpening rod mechanism clamps a grinding stone for sharpening the blade. The attitude adjustment mechanism is connected to the sharpening rod mechanism and includes a vertical rail, a slider, and a rotating body. The slider is connected to the sharpening rod mechanism and slidably mounted on the vertical rail so that the sharpening rod mechanism is disposed movably in a first direction. The rotating body is connected to the vertical rail so that the sharpening rod mechanism is rotatable in a direction parallel to a second plane. The slider is provided with a mounting part for connecting the sharpening rod mechanism. The grinding stone of the sharpening rod mechanism is disposed movably in a second direction relative to the mounting part. The first plane and the second plane are not parallel, and the first direction and the second direction are not parallel.

[0006] Alternatively, the first plane and the second plane are perpendicular, and the first direction and the second direction are perpendicular.

[0007] The blade clamp assembly can be set to a fixed type or an angle adjustable type. A fixed type may mean that the angle is fixed. In this case, the angle adjustment assembly can be replaced with a fixed base, as long as it can support the blade clamp assembly. Therefore, the present invention also provides a blade sharpener that does not have an angle adjustment assembly, i.e., the blade angle of the blade clamp assembly is not adjustable but is fixed. The blade sharpener includes the above-mentioned attitude adjustment mechanism, the blade clamp assembly of the blade clamp mechanism, and a sharpening rod mechanism.

[0008] If the blade clamp assembly is angle adjustable, the sharpening rod can be mounted horizontally, and when sharpening, the sharpening rod moves horizontally at 0° without changing the angle, and the included angle can be kept fixed by adjusting the angle of the blade clamp assembly. Of course, the sharpening rod mechanism does not have to be mounted horizontally.

[0009] The blade clamp assembly is used to clamp a blade and includes a blade clamp and a blade clamp mount, and at least two sets of blade clamps are provided and attached to the blade clamp mount, and the two blade clamps are attached to the blade clamp mount with an adjustable spacing. Alternatively, only one set of blade clamps may be provided.

[0010] Alternatively, at least one blade clamp is movably disposed relative to the blade clamp mount so that the spacing between the two blade clamps can be adjusted; the blade clamp assembly is attached to a base and is used to clamp the blade to be sharpened, and also includes at least two blade clamp mounts. The blade clamps are movably attached to the mounts so that the distance between the blade clamps can be adjusted according to the length of the blade; specifically, the mounts are provided with adjustment grooves, and adjustment screws are coupled to the blade clamps through the adjustment grooves. After loosening the screws, the blade clamp position can be adjusted by adjusting the position of the adjustment screw in the adjustment groove, and the mounting angle of the mounts can be adjusted to suit blades of various shapes and sizes or different sharpening needs. The mounts may also be provided with elongated holes communicating with the adjustment grooves.

[0011] Alternatively, the blade clamp may have a U-shaped structure, for example, consisting of two clamping pieces with connected ends, the connected ends of the two clamping pieces being slidably mounted on the blade clamp mount, and the ends of the clamping pieces away from the connected ends are used to clamp the blade, and the two clamping pieces may be provided with fasteners to further increase the clamping stability.

[0012] The two clamping pieces have opposing matching surfaces on the blades that fit the blade. The width of the matching surfaces can be set according to the blade width, and setting a larger value increases the contact area, further improving stability.

[0013] The angle adjustment assembly is used to adjust the angle of the blade in a first plane, which is parallel to one of the radial cross sections of the sharpening rod and also parallel to one of the radial cross sections of the sleeve.

[0014] The angle adjustment assembly may be an angle adjustment assembly that combines non-infinite adjustment and infinite adjustment, for example, it may include an infinite adjustment member, a butt rod, and an angle adjustment member. The angle adjustment member is connected to the blade clamp assembly. Opposite ends of the butt rod are connected to the infinite adjustment member and the angle adjustment member, respectively. By adjusting the position of the butt rod on the infinite adjustment member, the angle adjustment member is adjusted, and the angle of the blade in the blade clamp assembly is changed, and the adjustment angle can be varied infinitely. At the same time, the blade clamp assembly can be adjusted to several preset angles by simply adjusting the angle adjustment member.

[0015] The angle adjustment member may include at least one angle adjustment plate attached to the base, an intermediate body connected to the blade clamp mounting base, and a pin. The intermediate body is rotatably mounted between the two angle adjustment plates. The intermediate body and the blade clamp assembly are connected, and the intermediate body is rotatably mounted. Multiple sets of pin holes are arranged on both the intermediate body and the angle adjustment plate, and the pins can be inserted into different pin holes to fix the intermediate body at different angles. The stop rod is used to move and rotate the intermediate body to achieve angle adjustment, and the stepless adjustment member is used to adjust the position of the stop rod.

[0016] The stepless adjustment member comprises a butt rod slider, a butt rod fixing bolt, an adjustment bolt, and a frame. The butt rod slider is attached to the frame and can adjust the height of the butt rod slider in the frame (up and down direction, i.e., the first direction), the adjustment bolt is attached to the top of the frame and is rotated to push down or pull up the butt rod slider to adjust the height, the butt rod fixing bolt is attached to the side of the frame and is tightened to abut against and fix the butt rod slider, one end of the butt rod is connected to the butt rod slider via a radial bearing, and the other end is attached via a threaded portion to a screw hole provided diagonally on the intermediate body.

[0017] Alternatively, at least three sets of pin holes are arranged in the height direction.

[0018] Alternatively, a guide rod is provided within the frame, and the guide rod passes through the butt bar slider to serve as a guide. Alternatively, the adjustment bolt and the butt bar slider are provided with annular grooves and slide blocks that fit together.

[0019] The stepless adjustment member also includes a butt rod fixing bolt for fixing the position of the butt rod slider. Both the butt rod fixing bolt and the adjustment bolt can be attached to the frame.

[0020] Therefore, this comprehensive angle adjustment assembly has two uses, not only can it be adjusted steplessly, but also can be adjusted at preset angles, making it suitable for more usage scenarios.

[0021] In another aspect, the angle adjustment assembly is a stepless angle adjustment assembly comprising a support, a connecting body, and an adjusting body, the blade clamp is attached to the connecting body, the support is provided with an adjusting curved surface, and the adjusting body is used to adjust the position of the connecting body on the adjusting curved surface, and the attitude of the connecting body changes depending on the position, thereby achieving adjustment of the angle of the blade clamp.

[0022] By providing a stepless adjustment mechanism, the blade clamping angle can be adjusted, allowing users to make appropriate adjustments according to various blade sharpening needs. In this embodiment, the curved surface contact method is used to achieve angle adjustment by adjusting different positions on the curved surface, which not only makes the angle adjustment effect smoother, but also has a relatively simple structure and is easy to operate. When combined with the sharpening rod adjustment mechanism, it can achieve better usability.

[0023] The support may be a horizontal support or a vertical support.

[0024] The support is a horizontal support, the connecting body is a contact slider, and the contact slider has a curved surface that matches the curved surface on the horizontal support, and when the relative positions of the two curved surfaces are different, the blade clamping angle on the contact slider is different. Alternatively, the side of the horizontal support facing the connecting body has a groove and a protrusion that fit together, facing the connecting body, to enhance stability. Furthermore, alternatively, the groove on the connecting body is provided in the center of the connecting body.

[0025] Alternatively, the adjustment body may include an adjustment screw and a rack structure that cooperates with the adjustment screw, and the rack structure is provided on the matching curved surface of the contact slider. The adjustment screw can be rotated to directly contact the contact slider and slide the contact slider to change its position. The adjustment screw cooperates with the rack structure, and after rotating the adjustment screw, the rack structure is driven to slide the contact slider.

[0026] When the support is a vertical support, the curved adjustment surfaces are provided on both opposite sides of the vertical support, and the connecting body is a movable slider fitted to the vertical support.

[0027] A rack structure is provided on one of the curved adjustment surfaces on the vertical support, and the adjustment body includes a gear attached to a movable slider, the gear being used to cooperate with the rack structure, and by rotating the gear, the movable slider is adjusted in height on the vertical support, and by switching to a different position on the curved surface, angle adjustment is achieved.

[0028] Alternatively, the movable slider is provided with a locking structure, and the locking structure is alternatively a locking bolt, which is attached to the movable slider, and after the position adjustment is completed, the locking is completed by rotating the locking bolt and pressing it against the vertical support.

[0029] Alternatively, the support is provided with a graduated area to facilitate precise adjustment of the angle.

[0030] In another aspect, the angle adjustment assembly is a screw-type stepless angle adjustment assembly, and the blade clamp angle adjustment assembly includes an adjustment screw, an adjustment slider, a connecting rod, an angle adjustment body, and a base, the adjustment slider is attached to the adjustment screw and connected to the angle adjustment body via the connecting rod, the angle adjustment body is movably attached to the base, the tilt angle of the angle adjustment body is controlled by rotating the adjustment screw, and the blade clamp is connected to the angle adjustment body to achieve stepless adjustment of the blade angle.

[0031] The provision of a blade clamp angle adjustment assembly enables the blade clamp angle to be continuously adjusted. The blade clamp angle adjustment assembly is composed of a screw, an adjustment slider, a connecting rod, and an angle adjustment body. When adjusting the angle, the angle adjustment body can be adjusted to the appropriate angle simply by rotating the screw. This eliminates the need for an additional angle fixing step after adjustment, making angle adjustment easier and providing better usability when combined with a sharpening rod adjustment mechanism.

[0032] Alternatively, the adjustment slider may have a flat surface that contacts the base, allowing the adjustment slider to move more smoothly, and there may be at least two sets of connecting rods that are symmetrically connected to both sides of the adjustment slider, thereby realizing stable driving of the angle adjustment body.

[0033] The angle adjuster and the base can be rotatably connected, and the adjustment screw can be attached to the base, making the overall structure simpler and more compact. The end of the adjustment screw can be provided with an adjustment knob, and the outer surface of the adjustment knob can be provided with a non-slip structure, making it easier to operate.

[0034] In one aspect, the attitude adjustment mechanism includes a longitudinal rail, a sliding body, and a rotating body, the rotating body and the longitudinal rail being disposed integrally or separately, and a sleeve, the rotating body being rotatably disposed within the sleeve.

[0035] The attitude adjustment mechanism also includes at least one, for example, two, bearings, and the vertical rail is coupled to the at least one bearing. The bearing is provided within the sleeve and supported by the sleeve. In other embodiments, for example, when the processing precision of the device is high, it is possible to not provide a bearing.

[0036] Alternatively, there may be two bearings provided at the upper and lower ends of the sleeve, and the vertical rail may be composed of two parts: an upper vertical rail exposed from the sleeve and a lower vertical rail (also called a rotating body) within the sleeve, with the slide rail removably connected to the upper vertical rail, and the lower vertical rail rotatably cooperating with the bearings. Alternatively, ball bearings may be used as the bearings, and providing two sets of bearings can ensure a stable rotation effect.

[0037] Alternatively, an upper limiting portion may be provided at the top end of the vertical rail, and the top of the sleeve may form the lower limiting portion. Alternatively, an end cover may be provided to act as a vertical limiter for the sliding body.

[0038] Alternatively, the posture adjustment mechanism may also include a slider, the sliding body being mounted on the vertical rail via the slider, the sliding body having a passage that penetrates vertically for the insertion of the vertical rail, the slider being mounted within the passage, and having a groove that fits into the slide rail, allowing the two to slide together by fitting together, and they may be removably connected by screws or the like. The slider and sliding body allow the sharpening rod mechanism to freely rise and fall to adjust its height during the sharpening process, and the position of the sharpening rod mechanism can be adjusted by rotating the vertical rail.

[0039] Alternatively, the axis of the bearing is parallel to or coincides with, and preferably coincides with, the center line of the rotating body, or the center extension line of the vertical rail is parallel to or coincides with, and preferably coincides with, the axis of the sleeve, making rotation more convenient, labor-saving, and stable.

[0040] Alternatively, the mounting portion is a mounting hole provided in the sliding body, and a sliding portion, which may be a connecting plate or other coupling structure provided outside the sliding body, is provided within the mounting hole.

[0041] In one aspect of the present invention, the sharpening rod mechanism may include a sharpening rod and a grinding wheel clamp block, wherein the sharpening rod is rotatably disposed within the grinding wheel clamp block, thereby allowing the grinding wheel to be rotatably positioned on a third plane, the third plane not being parallel to the first plane and the second plane.

[0042] Alternatively, the first plane is perpendicular to the second plane, the second plane is perpendicular to the third plane, the first and third planes intersect, and when the grinding wheel is rotated in either state, any two of the third plane, the first plane, and the second plane are perpendicular to each other.

[0043] Alternatively, the sharpening rod may be inserted through the mounting portion and coupled to a sliding portion, which may be a linear bearing or other structure capable of achieving sliding.

[0044] The sharpening rod mechanism may be provided with a limiting portion on the side closer to the grindstone for restricting the range of movement of the sharpening rod in the forward and backward directions.

[0045] The grinding wheel clamp block may be provided with a regulating groove that is aligned with the grinding wheel. The extending direction of the regulating groove may be distributed along a direction perpendicular to the extending direction of the sharpening rod and the extending direction of the vertical rail. When installing, the grinding wheel only needs to be inserted along the regulating groove, and the regulating groove may be triangular in shape.

[0046] In another aspect of the present invention, there is provided another sharpening rod mechanism including a sharpening rod coupled to an attitude adjustment mechanism, wherein the sharpening rod and attitude adjustment mechanism are fixed relative to one another. To enable the sharpening stone of the sharpening rod mechanism to be movably positioned in a second direction relative to the mounting portion, the sharpening rod mechanism also includes a grinding stone clamping block for mounting the grinding stone, wherein the grinding stone clamping block is slidably attached to the sharpening rod, or alternatively, the grinding stone clamping block is rotatably positioned relative to the sharpening rod, thereby rotatably positioning the grinding stone in a third plane.

[0047] The third plane is not parallel to the first and second planes.

[0048] The grinding wheel clamp block may be provided with a regulating groove that is aligned with the grinding wheel. The extending direction of the regulating groove may be distributed along a direction perpendicular to the extending direction of the sharpening rod and the extending direction of the vertical rail. When installing, the grinding wheel only needs to be inserted along the regulating groove, and the regulating groove may be triangular in shape.

[0049] The grinding stone clamp block can be fixed in position relative to the grinding rod by means of a connecting device such as a bolt.

[0050] The above-mentioned attitude adjustment mechanisms, blade clamp assemblies of the blade clamp mechanism, sharpening rod mechanisms, and angle adjustment assemblies of the blade clamp mechanism can be combined in any manner. For example, any of the following can be combined: a comprehensive adjustment type angle adjustment assembly, a horizontally mounted, continuously adjustable angle adjustment assembly, a vertically mounted, continuously adjustable angle adjustment assembly, and a screw-type continuously adjustable angle adjustment assembly with any of the above-mentioned attitude adjustment mechanisms, blade clamp assemblies of the blade clamp mechanism, and sharpening rod mechanisms.

[0051] Alternatively, the angle adjustment assembly and the blade clamp may be provided with mating holes and mating posts, respectively. For example, the angle adjustment assembly may be provided with a mating post, and the blade clamp may be provided with a mating hole, which may be inserted into the mating hole and fixed by a fixing structure, allowing for easy attachment and detachment. The configuration of the mating hole and mating post allows for easy inversion for sharpening, and the blade clamp and blade can be easily removed during sharpening to observe the actual sharpening effect. Alternatively, the angle adjustment assembly and the blade clamp may be connected by other methods, such as connection with a connecting rod or engagement.

[0052] Alternatively, the cross sections of the joining post and joining hole may both be polygonal, for example quadrilateral, to prevent relative rotation after installation.

[0053] Alternatively, the joint post is positioned at an angle to the connector, i.e., the included angle between the joint post and the upper surface of the connector is not a right angle, and further, the joint post is angled away from the blade to increase stability.

[0054] The above-mentioned parallel or perpendicular includes not only strict perpendicular or parallel, but also nearly perpendicular or nearly parallel due to constraints of the process or the like. [Effects of the Invention]

[0055] In short, by providing the vertical rail, slider, and rotor of the attitude adjustment mechanism, during the sharpening process, the sharpening rod mechanism can be freely raised and lowered (upward in the first direction) to adjust its height, and the position of the sharpening rod can be adjusted by rotating the vertical rail (rotation on the second plane).The attitude of the sharpening rod can be adjusted by combining these two adjustment methods, and the rotation angle of the blade on the first plane can also be adjusted via the angle adjustment assembly.The sharpening rod mechanism is arranged to be movable in the second direction along the mounting part on the slider.

[0056] When sharpening, grindstones of different grit sizes must be replaced, and the thickness of the grindstone is not necessarily constant. Therefore, conventional knife sharpeners cannot adjust dimensions such as the height of the grindstone after replacing grindstones of different thicknesses, which changes the relative position (e.g., grinding angle) between the grindstone and the blade to be sharpened, or changes the clamping position of the blade, which also changes the relative position between the blade and the grindstone, resulting in a significant decrease in sharpening effectiveness. However, the knife sharpener provided by the present invention can not only achieve displacement in two different dimensions, but also rotation in two different dimensions. By combining an angle adjustment mechanism with a posture adjustment mechanism, only the angle of the blade clamp needs to be adjusted during sharpening, without considering angle deviations due to factors such as the thickness of the grindstone, the clamping position of the blade, and the shape of the blade. [Brief explanation of the drawings]

[0057] The present invention will be specifically described below with reference to the drawings and embodiments.

[0058] [Figure 1] 1 is a schematic diagram illustrating the overall configuration of a blade sharpener according to an embodiment of the present invention. [Figure 2] 2 is a schematic top view of the knife sharpener of FIG. 1. FIG. [Figure 3] 2 is a schematic side view of the knife sharpener of FIG. 1. FIG. [Figure 4] 2 is a schematic diagram of an intermediate body, a pin, and an angle adjustment plate of the blade sharpener of FIG. 1. [Figure 5] FIG. 2 is a cross-sectional view of the knife sharpener of FIG. 1. [Figure 6] 2 is a cross-sectional view of the knife sharpener of FIG. 1 in another direction. [Figure 7] FIG. 1 is a schematic diagram of a knife clamp assembly according to one embodiment. [Figure 8] FIG. 2 is a partial schematic diagram of an angle adjustment assembly according to one embodiment. [Figure 9] 1 is a schematic diagram of an angle adjustment assembly of a blade sharpener according to an embodiment of the present invention; [Figure 10] 10 is a schematic bottom view of the connector of the angle adjustment assembly of FIG. 9. FIG. [Figure 11] FIG. 10 is a cross-sectional view of the angle adjustment assembly of FIG. [Figure 12] 1 is a schematic diagram of a blade sharpener according to an embodiment of the present invention; [Figure 13] FIG. 13 is a cross-sectional view of the angle adjustment assembly of FIG. 12. [Figure 14] FIG. 13 is a schematic top view of the knife sharpener of FIG. 12. [Figure 15] 1 is a schematic diagram of a blade sharpener according to an embodiment of the present invention; [Figure 16] FIG. 16 is a schematic view of the knife sharpener of FIG. 15 from another angle. [Figure 17] FIG. 16 is a cross-sectional view of the knife sharpener of FIG. 15. [Figure 18] 1 is a schematic diagram of one of the sharpening rod mechanisms of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0059] The following description is intended to clarify the present invention so as to enable those skilled in the art to practice the invention. The embodiments described below are for illustrative purposes only, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention as defined in the following description may be applied to other aspects, variations, modifications, equivalents, and forms thereof that do not depart from the spirit and scope of the present invention.

[0060] As shown in Figures 1 to 8, this embodiment provides an attitude adjustment mechanism 1 for a knife sharpener, which includes a vertical rail 13, a sliding body 14, and a rotating body 10. The cross section in Figure 5 is taken along the radial axis of the vertical rail and is perpendicular to the mounting surface of the attitude adjustment mechanism, and the cross section in Figure 6 is taken along the radial axis of the vertical rail and is perpendicular to the cross section in Figure 5.

[0061] The rotating body 10 is equipped with two sets of bearings 12, a vertical rail 13 is connected to the two sets of bearings 12, and a sleeve 19 is used to support the bearings 12. The two sets of bearings may be provided at the upper and lower ends of the sleeve, respectively. Alternatively, a ball bearing may be used as the bearing 12. By providing two sets of bearings, a stable rotation effect can be ensured.

[0062] The vertical rail 13 is composed of two parts: an upper vertical rail 131 exposed from the sleeve 19, and a lower vertical rail 132 inside the sleeve 19. The upper vertical rail and the lower vertical rail may be integrally molded or assembled. The lower vertical rail 132 is cylindrical. A slide rail 133 is removably connected to the upper vertical rail 131. The extension direction of the slide rail is the same as the extension direction of the vertical rail. Alternatively, the upper vertical rail 131 is not cylindrical but semi-cylindrical. When the upper vertical rail and the lower vertical rail are separate bodies, the lower vertical rail 132 also belongs to part of the rotating body 10.

[0063] The vertical rail 13 can be formed as a single unit or assembled from multiple components. The lower vertical rail extends along the L1 direction, with its central extension line parallel to or coinciding with, and preferably coinciding with, the axis of the bearing 12, or parallel to or coinciding with, and preferably coinciding with, the axis of the sleeve, making rotation more convenient, labor-saving, and stable. An upper limiting portion 134 is provided at the top end of the vertical rail 13, and the top of the sleeve 19 forms the lower limiting portion. Alternatively, an end cover 191 can be provided to act as a vertical limiter for the sliding body 14.

[0064] The posture adjustment mechanism also includes a slider 15, and the sliding body 14 is attached to the vertical rail 13 via the slider 15. The sliding body 14 has a passage that penetrates vertically for inserting the vertical rail, and the slider 15 is attached within the passage. A groove that matches the slide rail 133 is provided on the slider 15, and the two fit together to enable sliding engagement, allowing the sliding body 14 to be relatively displaced in the vertical direction along the vertical rail 13 (the extension direction L1 of the vertical rail in FIG. 5 is also called the first direction), and the sliding body 14 and the slider 15 are connected with screws to facilitate assembly. Alternatively, in another embodiment, the sliding body and the slider are replaced with linear bearings, which are fitted to the vertical rail, and the shape of the vertical rail may correspond to the shape of the linear bearing.

[0065] The sliding body 14 is provided with an attachment part 16 for connecting the sharpening rod 31; the sliding body 14 and the attachment part 16 can be integrally molded; the attachment part 16 is provided with an attachment hole for passing the sharpening rod therethrough; the attachment hole is a through-hole for facilitating movement of the sharpening rod in the forward and backward directions (the direction perpendicular to the paper surface in FIG. 6, or direction L2 in FIG. 5, is also called the second direction, and the second direction may be perpendicular to the first direction). A sliding part 17 for facilitating movement of the sharpening rod in the forward and backward directions is provided within the attachment hole; a linear bearing or a structure that facilitates sliding can be used.

[0066] During the sharpening process, the sharpening rod 31 can be freely raised and lowered (in the first direction) to adjust its height, and the position of the sharpening rod can be adjusted by rotating the vertical rail 13 (i.e., by adjusting the rotation direction on the second plane, which is parallel to the mounting surface or the arrangement surface of the base or perpendicular to the cross section in Figure 5, for example, rotation R2 in Figure 3). The combination of these two adjustment methods allows the posture of the sharpening rod to be adjusted, which can accommodate various shapes of blades and different sharpening needs, and can be adjusted quickly. The adjustment method is simple, the adjustment process is smooth, and the user experience is improved.

[0067] Please refer to Figures 1 to 8. This embodiment provides a knife sharpener including any of the above-mentioned or below-mentioned attitude adjustment mechanisms 1, a knife clamping mechanism 2, a sharpening rod mechanism 3, and a knife 8. The knife clamping mechanism 2 includes a knife clamping assembly 21 for clamping the knife 8.

[0068] Alternatively, the blade clamp assembly 21 can be configured as a fixed or angle adjustable type.

[0069] As shown in Fig. 3, this embodiment provides a sharpening rod mechanism 3 equipped with a sharpening rod 31. The sharpening rod 31 is provided through a mounting portion 16 and connected to a sliding portion 17, which is a linear bearing, and may further include a limiting portion 34 disposed closer to the grindstone 33 to limit the amount of forward and backward movement of the sharpening rod 31.

[0070] Alternatively, the sharpening rod can rotate in a direction parallel to a third plane to rotate the grinding wheel, and at this time, the sharpening rod and the linear bearing can also rotate relative to each other, and the third plane is parallel to the rotation direction of the axial cross section of the sharpening rod, for example, R3 in Figure 3.

[0071] See Figure 18. This embodiment also provides another sharpening rod mechanism 3', which includes a sharpening rod 31 connected to an attitude adjustment mechanism. In this case, the sharpening rod and the attitude adjustment mechanism are fixed relative to each other. To allow the grinding wheel of the sharpening rod mechanism to be movably positioned in the second direction relative to the mounting part, the grinding wheel clamp block constitutes a grinding wheel clamp block set 322, where the grinding wheel clamp block set is slidably attached to the grinding rod, or alternatively, the grinding wheel clamp block set is rotatably positioned relative to the grinding rod, thereby rotatably positioning the grinding wheel in a third plane (direction R3).

[0072] In the two types of sharpening rod mechanisms described above, a grinding wheel clamp block 32 is provided on the sharpening rod 31, and the distance between the two sets of grinding wheel clamp blocks 32 can be adjusted to clamp the grinding wheel 33. For example, one grinding wheel clamp block can be fixed and the other can be moved to adjust the distance, and then the two sets can be fixed by tightening bolts or the like. To further improve the clamping effect, a spring is provided between the movable clamp block and the handle 38, ensuring that the clamp block is constantly under pressure to lock the grinding wheel. To replace the grinding wheel, simply pull the movable clamp block to release the pressure. In the sharpening rod mechanism 3', to secure the grinding wheel, the grinding wheel clamp block set 322 includes two grinding wheel clamp blocks and a connector 323 connected to the two grinding wheel clamp blocks. The sharpening rod mechanism 3' also includes a fixed block 320, with both ends of the spring abutting the grinding wheel connecting block and the fixed block 320, respectively.

[0073] In the two types of sharpening rod mechanisms mentioned above, Alternatively, a first plane (described later) is perpendicular to a second plane, the first plane intersects with a third plane, and the second plane is perpendicular to the third plane. Here, "perpendicular" includes not only strict perpendicularity but also near perpendicularity due to constraints of the process or the like.

[0074] The grinding wheel clamp block 32 may be provided with a regulating groove 321 that is aligned with the grinding wheel. The extending direction of the regulating groove 321 may be distributed along a direction perpendicular to the extending direction of the sharpening rod and the extending direction of the vertical rail, and when installing the grinding wheel, the grinding wheel only needs to be inserted along the regulating groove. The shape of the regulating groove 321 may be a triangular groove.

[0075] If the blade clamp assembly 21 is angle adjustable, the sharpening rod can be mounted horizontally, and during sharpening, the sharpening rod moves horizontally at 0° without changing the angle, and the included angle can be kept fixed by adjusting the angle of the blade clamp assembly 21. In other embodiments, the sharpening rod mechanism does not have to be mounted horizontally.

[0076] This embodiment also provides a blade clamping mechanism 2 including a blade clamping assembly 21 and an angle adjustment assembly 22. The angle adjustment assembly 22 is used to adjust the angle of the blade on a first plane, which is parallel to one of the radial cross sections of the sharpening rod and one of the radial cross sections of the sleeve, and which may be parallel to the cross-sectional direction shown in FIG. 5, for example, the rotation direction of R1 in FIG. 5. One of the two dotted lines in the figure is parallel to the blade direction, and the other is parallel to the mounting surface, and the angle adjustment assembly adjusts the magnitude of the included angle between these two lines.

[0077] The blade clamp assembly 21 is used to clamp the blade 8. The blade clamp assembly 21 includes a blade clamp 212 and a blade clamp mount 211. At least two sets of blade clamps 212 are provided and attached to the blade clamp mount 211, and the two blade clamps 212 are attached to the blade clamp mount 211 with the spacing between them adjustable.

[0078] 7, the distance between the two blade clamps 212 can be adjusted according to the length of the blade, and at least one blade clamp is movably disposed relative to the blade clamp mount, and the blade clamp assembly 21 is indirectly or directly attached to the base 9 and used to clamp the blade to be ground. Specifically, an adjustment groove 2110 is provided in the mount 211, and an adjustment screw 214 is coupled to the blade clamp 212 through the adjustment groove 2110. After loosening the adjustment screw 214, the position of the blade clamp 212 in the adjustment groove 2110 is adjusted. The mount 211 may be provided with an elongated hole 2111 that communicates with the adjustment groove 2110.

[0079] Alternatively, the blade clamp may have a U-shaped structure, for example, consisting of two clamping pieces with connected ends, the connected end of the two clamping pieces being slidably mounted on the blade clamp mount. The ends of the clamping pieces away from the connected end are used to clamp the blade 8, and the two clamping pieces may be provided with fasteners 213 to further increase the stability of the clamping. The parts of the two clamping pieces that are intended to fit the blade have matching surfaces 217 that fit the blade, arranged opposite each other. The size of the matching surfaces 217 can be set as needed.

[0080] The angle of the mount 211 can be adjusted by the angle adjustment assembly 22 to accommodate blades of various shapes and sizes or different sharpening needs.

[0081] The angle adjustment assembly 22 includes a stepless adjustment member, a stop rod 224, and an angle adjustment member 228. The angle adjustment member 228 is connected to the blade clamp assembly 21. Opposite ends of the stop rod 224 are connected to the stepless adjustment member and the angle adjustment member 228, respectively. By adjusting the position of the stop rod 224 on the stepless adjustment member, the angle adjustment member 228 is adjusted, and the angle of the blade in the blade clamp assembly 21 changes, and the adjusted angle can be changed steplessly. At the same time, the blade clamp assembly 21 can also be adjusted to several preset angles by simply adjusting the angle adjustment member 228.

[0082] The angle adjustment member 228 includes at least one angle adjustment plate 221 (two in this embodiment) attached to the base 9, an intermediate body 231 connected to the blade clamp mounting base 211, and a pin 223. The intermediate body 231 is rotatably provided between the two angle adjustment plates 221.

[0083] The intermediate body 231 and the angle adjustment plate 221 are provided with a rotation axis 232 and a rotation hole that fit together, respectively, so that the intermediate body 23 can rotate around the rotation axis 232. The angle adjustment plate 221 and the intermediate body 231 are provided with a plurality of matching pin holes 222, respectively, and as shown by the dotted line in Fig. 4, the pin holes 222 on the angle adjustment plate 221 are generally arranged in a diagonal line, while the pin holes on the intermediate body 231 are arranged in an arc.

[0084] By aligning the angle adjustment plate 221 with the pin holes 222 on the intermediate body 231 and inserting pins 223 into pin holes 222 at different positions, the intermediate body 231 can be adjusted to different angles; by providing different numbers of pin holes 222, adjustment to a preset number of angles can be achieved. In this case, the aid of a stepless adjustment member is not required (at least the butt rod slider 226 of the stepless adjustment member must be removed, or the butt rod slider 226 and adjustment bolt 225 must be removed, or the butt rod slider 226 must not be removed, but the butt rod 224 must be moved out of the stepless adjustment member so that the butt rod is not fixed), and adjustment can be completed by directly moving the butt rod by hand to align the hole position and inserting it. Alternatively, the position of the butt rod can be adjusted by screwing in the stepless adjustment member to achieve hole adjustment.

[0085] As shown in Fig. 8, the stepless adjustment member includes a butt rod slider 226, a butt rod fixing bolt 227, an adjustment bolt 225, and a frame 229. The butt rod slider 226 is attached within the frame 229, and the height (up and down direction, i.e., the first direction) of the butt rod slider 226 in the frame 229 can be adjusted; the adjustment bolt 225 is attached to the top of the frame 229 and, after rotating, pushes down or pulls up the butt rod slider 226 to adjust the height; the butt rod fixing bolt 227 is attached to the side of the frame 229 and, after tightening, abuts against and fixes the butt rod slider 226; one end of the butt rod 224 is connected to the butt rod slider 226 via a radial bearing 2261, and the other end is attached via a threaded portion to a screw hole provided at an angle on the intermediate body 231 (diagonally as shown in Fig. 5, the butt rod and the intermediate body are not perpendicular).

[0086] Alternatively, a guide rod 230 is provided within the frame 229, and the guide rod 230 serves as a guide by passing through the butt rod slider 226. Alternatively, the adjustment bolt 225 and the butt rod slider 226 are provided with an annular groove 2251 and a slide block 2262 that fit together.

[0087] By rotating the adjustment bolt 225, the pin 223 is pulled out, the height of one end of the butt rod 224 is adjusted, the radial bearing 2261 rotates according to the appropriate angle, and the butt rod 224 rotates the intermediate body 231 around the rotation axis. After aligning the intermediate body 231 with the pin hole 222 on the angle adjustment plate 221, the angle can be fixed by inserting the fixing bolt 227.

[0088] The pin holes 222 on the left and right angle adjustment plates 221 can be arranged in different ways to increase the number of preset angles, and the provision of the pin holes 222 also makes it possible to quickly set the sharpening angle according to the requirements of different blades without using a protractor. It is very easy to sharpen the same blade at the same angle when sharpening it at different times.

[0089] Therefore, this angle adjustment assembly 22 has two uses, and not only can it be adjusted steplessly, but it can also be adjusted at a preset angle, making it suitable for a wider range of usage situations.

[0090] Furthermore, the blade clamping mechanism 2 can be configured as a stepless angle adjustable type. The blade clamping mechanism 2 includes a blade clamping assembly 21 and a stepless adjustment mechanism 5. That is, as shown in Figs. 9 to 11, the angle adjustment assembly 22 can be replaced with the stepless adjustment mechanism 5. The cross section of Fig. 11 is taken along the radial axis of the vertical rail and is perpendicular to the mounting surface of the attitude adjustment mechanism.

[0091] The stepless adjustment mechanism 5 comprises a support 51, a connecting body 52, and an adjusting body 56, the support is attached to the base 9, the blade clamp assembly is attached to the connecting body, the support has an adjusting curved surface 55, the adjusting body is used to adjust the position of the connecting body on the adjusting curved surface, the posture of the connecting body changes depending on the position of the connecting body on the adjusting curved surface, and the angle of the blade clamp assembly is adjusted.

[0092] The support 51 may be a horizontal support provided with a scale area 54, and for accurate angle adjustment, an indication mark indicating the scale area is provided on the connecting body 52 relatively, the connecting body 52 is a contact slider, and an adjustment curved surface 55 is provided on the upper end surface of the horizontal support, and the contact slider is provided with a matching curved surface 58 that matches the adjustment curved surface on the horizontal support.

[0093] A connecting block 218 having a connecting hole 219 protrudes from the side of the blade clamp mount 211 facing the support, and a connecting post 521 is provided on the contact slider, and the contact slider and the connecting post can be molded as a single unit. The connecting hole 219 and the connecting post 521 are inserted and fixed with a fixing bolt (not shown in FIG. 11, but provided at position 220), making attachment and detachment easy, and the cross sections of the connecting post 521 and the connecting hole 219 are both polygonal, for example quadrilateral, to prevent relative rotation after attachment.

[0094] To improve stability, the joint post 521 is provided at an angle on the connector 52, i.e., the angle between the joint post 521 and the upper surface of the connector is not a right angle, and furthermore, the joint post 521 is inclined away from the blade.

[0095] The blade clamp assembly 21 is attached to the connecting body 52, and the blade clamps 212 are used to clamp the blades. Multiple sets of blade clamps 212 may be provided, and two sets are provided in this embodiment. The blade clamps 212 are attached to the slotted holes of the connecting block 218 via adjustment screws 214, and the position of the blade clamps 212 on the connecting block 218 can be adjusted by loosening the adjustment screws 214 to accommodate different types of blades, such as different lengths.

[0096] The adjustment body includes an adjustment screw 56, an adjustment knob 53 at the end of the adjustment screw 56, the adjustment screw 56 is attached to a horizontal support, and a rack structure 57 is provided on a matching curved surface 58 of the contact slider. Through cooperation between the adjustment screw 56 and the rack structure 57, when the adjustment screw 56 is rotated, the rack structure 57 is driven to slide the contact slider, and when the relative positions of the two curved surfaces are different, the angle of the blade clamp assembly on the contact slider is different.

[0097] In another embodiment, the adjustment screw 56 can be rotated to directly contact one end surface of the contact slider and slide to change its position.

[0098] For accuracy, the side of the horizontal support facing the connector is provided with a groove 522 and a protrusion 551 that face the connector and fit together to enhance stability. Alternatively, the groove on the connector is provided in the center of the connector.

[0099] As shown in Figures 12 to 14, another stepless adjustment mechanism 7 is provided. The cross section of Figure 13 is taken along the radial axis of the vertical rail and is perpendicular to the mounting surface of the posture adjustment mechanism. The support is a vertical support 75, which may be integrally molded with the base. Adjustment curved surfaces are located on both sides, respectively on opposite sides of the vertical support 75, and each adjustment curved surface is an outer arcuate surface 79 and an inner serrated surface 72. The connecting member is a movable slider 73 fitted into the vertical support 75. The adjusting member includes a gear 78 attached to the movable slider 73 via a shaft. The gear 78 is connected to an adjustment knob 74 and is used to cooperate with the serrated surface 72. The movable slider 73 also has an arcuate surface 731 that slides with the arcuate surface 79. By rotating the gear 78, the height of the movable slider 73 on the vertical support 75 can be adjusted, and angle adjustment can be achieved by switching to different positions on the curved surface.

[0100] The vertical support 75 is also disposed at an angle, inclined away from the blade.

[0101] A connecting shaft 76 is provided on the side of the movable slider 73 closer to the blade. The connecting shaft 76 may be provided integrally with the movable slider 73, and the blade clamp assembly and the connecting shaft are fixed with a fixing bolt 220.

[0102] A locking structure 77 is provided on the movable slider 73. The locking structure 77 is a locking bolt that is attached to the movable slider 73. After the position adjustment is completed, the locking bolt is rotated and pressed against the vertical support 75 to complete the locking.

[0103] As shown in Figures 15 to 17, a screw-type angle adjustment assembly 4 is provided, which is also a stepless adjustment mechanism. The cross section in Figure 17 is taken along the radial axis of the vertical rail and is perpendicular to the mounting surface of the attitude adjustment mechanism.

[0104] The blade clamp angle adjustment assembly 4 comprises an adjustment screw 44, an adjustment slider 43, a connecting rod 46, an angle adjustment body 45, and a base 41. The base 41 is mounted on the base 9, the adjustment screw 44 is mounted on the base 41, and the adjustment slider 43 is mounted on the adjustment screw 44. The adjustment slider 43 has a threaded portion so that it can cooperate with the adjustment screw, and the adjustment slider 43 has a flat surface that contacts the base 41, making the movement of the adjustment slider 43 more stable. The angle adjustment body 45 and the base 41 are rotatably connected via a shaft structure, and the adjustment slider 43 is connected to the angle adjustment body 45 via a connecting rod 46, with both ends of the connecting rod 46 rotatably connected to the adjustment slider 43 and the angle adjustment body 45, respectively. Two sets of connecting rods 46 are provided, and are connected symmetrically to both sides of the adjustment slider 43, ensuring stable operation of the angle adjustment body 45. An adjustment knob 42 is provided at the end of the adjustment screw, and an anti-slip structure is provided on the outer circumferential surface of the adjustment knob 42, making it easy to operate.

[0105] By rotating the adjustment screw 44 with the adjustment knob 42, the angle adjustment body 45 is moved, and the angle adjustment body 45 is supported by the connecting rod 46, changing the angle of the angle adjustment body 45, thereby realizing stepless adjustment of the clamping angle of the blade.

[0106] The above-mentioned attitude adjustment mechanisms, blade clamp assemblies of the blade clamp mechanisms, sharpening rod mechanisms, and angle adjustment assemblies of the blade clamp mechanisms can be combined in any manner.

[0107] Those skilled in the art will understand that the embodiments of the present invention described above and shown in the drawings are merely examples and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been disclosed and explained in the embodiments, and any variations and modifications can be made in the implementation of the present invention without departing from said principles.

[0108] (Addendum) (Appendix 1) a blade clamping mechanism including a blade clamping assembly for clamping a blade and an angle adjusting assembly for adjusting a rotation angle of the blade on a first plane; a sharpening rod mechanism for clamping a grindstone for sharpening the blade; an attitude adjustment mechanism comprising a vertical rail, a slider, and a rotor, the slider being connected to the sharpening rod mechanism and slidably mounted on the vertical rail so that the sharpening rod mechanism is disposed so as to be movable in a first direction, the rotor being connected to the vertical rail so that the sharpening rod mechanism is rotatable in a direction parallel to a second plane, the slider being provided with an attachment portion for connecting the sharpening rod mechanism, and the grinding stone of the sharpening rod mechanism being disposed so as to be movable in a second direction relative to the attachment portion; A knife sharpener comprising: The first plane and the second plane are not parallel, and the first direction and the second direction are not parallel.

[0109] (Appendix 2) The knife sharpener of Appendix 1, characterized in that the sharpening rod mechanism includes a sharpening rod and a grinding stone clamp block, the sharpening rod being rotatably inserted into the grinding stone clamp block, so that the grinding stone can be rotatably positioned on a third plane, the third plane not being parallel to the first plane and the second plane.

[0110] (Appendix 3) The angle adjustment assembly comprises a stepless adjustment member, a stop bar, and an angle adjustment member, the angle adjustment member being connected to the blade clamp assembly, and opposite ends of the stop bar being connected to the stepless adjustment member and the angle adjustment member, respectively, and the angle adjustment member is adjusted by adjusting the position of the stop bar in the stepless adjustment member, thereby continuously changing the angle of the blade in the blade clamp assembly, and the angle of the blade clamp assembly can also be changed within a preset angle by adjusting the angle adjustment member.

[0111] (Appendix 4) The knife sharpener described in Appendix 3, characterized in that the angle adjustment member comprises at least one angle adjustment plate, an intermediate body connected to the knife clamp mounting base, and a pin, the intermediate body being rotatably mounted on the at least one angle adjustment plate, and multiple sets of pin holes being provided on both the intermediate body and the angle adjustment plate, and by adjusting the pin to be positioned in a different set of pin holes, the angle of the knife clamp assembly can be changed within a preset angle.

[0112] (Appendix 5) The knife sharpener of Appendix 4, wherein the stepless adjustment member comprises a butt bar slider, a radial bearing, and an adjustment bolt, the butt bar slider being connected to one end of the butt bar via the radial bearing, and the adjustment of the angle adjustment member is achieved by adjusting the height of the butt bar in the stepless adjustment member, thereby steplessly changing the angle of the knife in the knife clamp assembly.

[0113] (Appendix 6) The knife sharpener described in Appendix 1, characterized in that the angle adjustment assembly is a stepless angle adjustment assembly comprising a support, a connecting body, and an adjustment body, the blade clamp assembly is attached to the connecting body, the support is provided with an adjustment curved surface, the adjustment body is used to adjust the position of the connecting body on the adjustment curved surface, the attitude of the connecting body changes depending on the position, and the angle of the blade clamp assembly is adjusted.

[0114] (Appendix 7) 7. The knife sharpener of claim 6, wherein the support is a horizontal support, the connecting body is a contact slider, and the contact slider is provided with a matching curved surface that matches the adjustment curved surface on the horizontal support.

[0115] (Appendix 8) The knife sharpener of Appendix 6, characterized in that the support is a vertical support, the adjustment curved surfaces are provided on both opposite side surfaces of the vertical support, and the connecting body is a movable slider fitted to the vertical support.

[0116] (Appendix 9) The angle adjustment assembly is a stepless angle adjustment assembly, and the blade clamp angle adjustment assembly comprises an adjustment screw, an adjustment slider, a connecting rod, an angle adjustment body, and a base, the adjustment slider is attached to the adjustment screw and connected to the angle adjustment body via the connecting rod, the angle adjustment body is movably attached to the base, the tilt angle of the angle adjustment body is controlled by rotating the adjustment screw, and the blade clamp is connected to the angle adjustment body.

[0117] (Appendix 10) The blade sharpener described in Appendix 1, characterized in that the rotating body and the vertical rail are arranged integrally or separately, the attitude adjustment mechanism also includes a sleeve, and the rotating body is rotatably arranged within the sleeve.

Claims

1. a blade clamping mechanism including a blade clamping assembly for clamping a blade and an angle adjusting assembly for adjusting a rotation angle of the blade on a first plane; a sharpening rod mechanism for clamping a grindstone for sharpening the blade; a posture adjustment mechanism comprising a vertical rail, a slider, and a rotating body, the slider being connected to the sharpening rod mechanism and slidably mounted on the vertical rail so that the sharpening rod mechanism is disposed movably in a first direction, the rotating body being connected to the vertical rail so that the sharpening rod mechanism is rotatable in a direction parallel to a second plane, the slider being provided with an attachment portion for connecting the sharpening rod mechanism, and the grinding stone of the sharpening rod mechanism being disposed movably in a second direction relative to the attachment portion; A knife sharpener comprising: The first plane and the second plane are not parallel, and the first direction and the second direction are not parallel.

2. 2. The knife sharpener of claim 1, wherein the sharpening rod mechanism comprises a sharpening rod and a grinding stone clamp block, the sharpening rod being rotatably inserted into the grinding stone clamp block, so that the grinding stone can be rotatably positioned on a third plane, the third plane not being parallel to the first plane and the second plane.

3. 2. The knife sharpener of claim 1, wherein the angle adjustment assembly comprises a stepless adjustment member, a stop bar, and an angle adjustment member, the angle adjustment member being connected to the knife clamp assembly, and opposite ends of the stop bar being connected to the stepless adjustment member and the angle adjustment member, respectively, and the angle adjustment member is adjusted by adjusting the position of the stop bar on the stepless adjustment member, thereby continuously changing the angle of the knife in the knife clamp assembly, and the angle of the knife clamp assembly can also be changed within a preset angle by adjusting the angle adjustment member.

4. 4. The knife sharpener of claim 3, wherein the angle adjustment member comprises at least one angle adjustment plate, an intermediate body connected to the knife clamp mounting base, and a pin, the intermediate body being rotatably mounted on the at least one angle adjustment plate, and both the intermediate body and the angle adjustment plate being provided with multiple sets of pin holes, and the angle of the knife clamp assembly can be changed within a preset angle by adjusting the pin to be positioned in a different set of pin holes.

5. 5. The knife sharpener of claim 4, wherein the stepless adjustment member comprises a butt bar slider, a radial bearing, and an adjustment bolt, the butt bar slider being connected to one end of the butt bar via the radial bearing, and the adjustment of the angle adjustment member is achieved by adjusting the height of the butt bar in the stepless adjustment member, thereby continuously changing the angle of the knife in the knife clamp assembly.

6. 2. The knife sharpener of claim 1, wherein the angle adjustment assembly is a stepless angle adjustment assembly comprising a support, a connecting body, and an adjusting body, the blade clamp assembly is attached to the connecting body, the support is provided with an adjustment curved surface, the adjusting body is used to adjust the position of the connecting body on the adjustment curved surface, and the attitude of the connecting body changes depending on the position, thereby achieving angle adjustment of the blade clamp assembly.

7. 7. The knife sharpener according to claim 6, wherein the support is a horizontal support, the connecting body is a contact slider, and the contact slider is provided with a matching curved surface that matches the adjustment curved surface on the horizontal support.

8. The knife sharpener of claim 6, characterized in that the support is a vertical support, the adjustment curved surfaces are provided on both opposite side surfaces of the vertical support, and the connecting body is a movable slider fitted to the vertical support.

9. 2. The knife sharpener of claim 1, wherein the angle adjustment assembly is a stepless angle adjustment assembly, and the knife clamp angle adjustment assembly comprises an adjustment screw, an adjustment slider, a connecting rod, an angle adjustment body, and a base, the adjustment slider is attached to the adjustment screw and connected to the angle adjustment body via the connecting rod, the angle adjustment body is movably attached to the base, the tilt angle of the angle adjustment body is controlled by rotating the adjustment screw, and the knife clamp is connected to the angle adjustment body.

10. The knife sharpener of claim 1, wherein the rotating body and the vertical rail are arranged integrally or separately, the attitude adjustment mechanism also includes a sleeve, and the rotating body is rotatably arranged within the sleeve.

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