Constant-angle knife sharpening frame

Abstract

The utility model discloses a fixed-angle knife sharpening frame, and aims to provide the fixed-angle knife sharpening frame which not only can ensure the knife sharpening effect, but also can effectively prevent a knife from being stuck on a knife sharpening blade in the knife sharpening process. The device comprises a base, a guide rail is arranged on the base, and a sharpening blade is arranged at the top of the base; the sliding seat slides along the guide rail, and a vertical guide rod is arranged on the sliding seat; the floating upper frame is located above the sliding seat and slides up and down along the vertical guide rod, an elastic element is arranged between the floating upper frame and the sliding seat, and the floating upper frame slides upwards along the vertical guide rod under the action of the elastic element; the cutter fixing structure is used for fixing a cutter and is arranged on the floating upper frame.

Description

Technical Field

[0001] The utility model relates to the field of knife sharpeners, in particular to a fixed-angle knife sharpening stand. Background Art

[0002] A knife sharpener currently on the market includes a base, a guide rail and a sharpening blade arranged on the base, and a slide seat sliding along the guide rail, wherein the slide seat is provided with a tool fixing structure for fixing the tool. When in use, the tool to be sharpened is fixed to the slide seat through the tool fixing structure, and the blade edge of the tool to be sharpened is close to the surface of the sharpening blade; then, the tool to be sharpened is driven by the slide seat to slide back and forth along the guide rail, so that the blade edge of the tool to be sharpened is ground on the sharpening blade. The knife sharpener currently on the market has the following shortcomings:

[0003] When fixing the tool to be sharpened on the slide, on the one hand, it is necessary to ensure that the blade of the tool to be sharpened is pressed tightly against the surface of the sharpening blade, otherwise it will affect the sharpening effect (for example, the blade of the tool to be sharpened is not pressed tightly against the sharpening blade or the pressing force is insufficient, or there is a gap between the blade of the tool to be sharpened and the surface of the sharpening blade, which will affect the sharpening effect); on the other hand, the pressing force when the blade of the tool to be sharpened is pressed tightly against the surface of the sharpening blade cannot be too large, otherwise the tool to be sharpened is likely to get stuck on the sharpening blade during the movement of the tool to be sharpened along the guide rail driven by the slide. Therefore, the sharpeners currently on the market are prone to poor sharpening effects and the tool is likely to get stuck on the sharpening blade during the sharpening process. Utility Model Content

[0004] The utility model aims to provide a fixed-angle knife sharpening stand which can ensure the knife sharpening effect and effectively avoid the knife being stuck on the knife sharpening blade during the knife sharpening process.

[0005] The technical solution of the utility model is:

[0006] A fixed-angle tool sharpening stand, comprising:

[0007] A base, on which a guide rail is arranged, and a sharpening blade is arranged on the top of the base;

[0008] A slide seat slides along the guide rail and a vertical guide rod is provided on the slide seat;

[0009] The floating upper frame is located above the slide seat and slides up and down along the vertical guide rod. An elastic element is provided between the floating upper frame and the slide seat, and the floating upper frame slides upward along the vertical guide rod under the action of the elastic element.

[0010] The tool fixing structure for fixing the tool is arranged on the floating upper frame. The specific use of a fixed angle tool grinding stand of this scheme is as follows:

[0011] The tool to be sharpened is fixed on the floating upper frame through the tool fixing structure, and the blade edge of the tool to be sharpened is close to or abuts against the surface of the grinding blade; then, the operator presses down the floating upper frame and drives the tool to be sharpened to move downward (overcoming the force of the elastic element acting on the floating upper frame) so that the blade edge of the tool to be sharpened is close to the surface of the grinding blade; then, the tool to be sharpened driven by the floating upper frame and the slide seat slides back and forth along the guide rail so that the blade edge of the tool to be sharpened is ground on the grinding blade. At the same time, during the sharpening process, the pressing force of the blade edge of the tool to be sharpened on the surface of the grinding blade is determined by the downward force of the operator pressing down the floating upper frame. Therefore, during the sharpening process, the operator can adjust the pressing force of the blade edge of the tool to be sharpened on the surface of the grinding blade at any time according to actual needs. In this way, on the one hand, the sharpening effect can be guaranteed; on the other hand, the tool can be effectively prevented from being stuck on the grinding blade during the sharpening process. In addition, if the tool gets stuck on the blade during the sharpening process, the operator can easily solve this problem by reducing the downward pressure of the floating upper rack or releasing the floating upper rack, so that the floating upper rack and the slide can drive the tool to be sharpened to slide back and forth along the guide rail.

[0012] Preferably, the tool fixing structure comprises:

[0013] A fixed angle slope is arranged on the floating upper frame;

[0014] The tool pressing plate is located above the fixed angle bevel, and the tool pressing plate is connected to the floating upper frame through the locking bolts. The specific operation of fixing the tool to be sharpened on the tool fixing structure is as follows: the tool to be sharpened is placed close to the fixed angle bevel, the blade of the tool to be sharpened is close to or abuts against the surface of the grinding blade, and the grinding angle of the tool to be sharpened is positioned through the fixed angle bevel; then, the locking bolt is locked, and the tool to be sharpened is pressed and fixed on the fixed angle bevel through the tool pressing plate; it is easy to operate, the fixing structure of the tool to be sharpened is stable, and the grinding angle of the tool to be sharpened is accurately positioned to ensure the sharpening effect.

[0015] Preferably, there are two fixed angle bevels, which are distributed in an inverted V shape, and the inclination angles of the two fixed angle bevels are different, and the tool pressing plate is located above the two fixed angle bevels. Based on this, the operator can place the tool to be sharpened against one of the fixed angle bevels according to the grinding angle requirements of different tools, and position the grinding angle of the tool to be sharpened through the fixed angle bevel; then, the locking bolt is locked, and the tool to be sharpened is pressed and fixed on the fixed angle bevel through the tool pressing plate, and then the tool is sharpened to grind out the blade angle corresponding to the inclination angle of the fixed angle bevel, or the existing blades of different angles on the tool are sharpened, thereby improving the application range of the fixed angle tool sharpening rack.

[0016] Preferably, the inclination angle of one of the fixed angle bevels is 25 degrees, and the inclination angle of the other fixed angle bevel is 30 degrees. In this way, the two fixed angle bevels can be used to grind two types of tools with blade angles of 25 degrees and 30 degrees; or the two fixed angle bevels can be used to grind a tool with a blade angle of 25 degrees or 30 degrees.

[0017] Preferably, the tool pressing plate is provided with two bolt through holes penetrating the upper and lower surfaces of the tool pressing plate, the two bolt through holes are arranged and distributed in a direction perpendicular to the guide rail, the two bolt through holes are provided with the locking bolts, one side of one of the bolt through holes is provided with a side opening connected to one side of the tool pressing plate, and the locking bolt in the bolt through hole can be moved out through the side opening. Based on this, when fixing the tool to be sharpened on the tool fixing structure, the two locking bolts can be loosened first, and then the tool pressing plate can be rotated to allow the locking bolt in the bolt through hole with the side opening to be moved out through the side opening;

[0018] Next, the tool to be sharpened is placed against the fixed angle bevel, with the cutting edge of the tool to be sharpened close to or in contact with the surface of the sharpening blade;

[0019] Next, by rotating the tool pressing plate, the locking bolt located on the outside of the bolt hole enters the bolt hole through the side opening; then the locking bolt is locked, and the tool to be sharpened is pressed and fixed on the fixed angle inclined plane through the tool pressing plate; this can further facilitate the fixing operation of the tool to be sharpened.

[0020] Preferably, a vertical bolt is provided on the slide seat, and the vertical bolt is connected to the slide seat by a thread, and the vertical bolt constitutes the vertical guide rod, and the floating upper frame slides upward along the vertical guide rod under the action of the elastic element and abuts against the bolt head of the vertical bolt. The vertical bolt is used as the vertical guide rod, so that it is not only convenient to install the vertical bolt and the floating upper frame, but also the elastic force of the elastic element acting on the floating upper frame can be adjusted by tightening or loosening the vertical bolt, so as to improve the user experience during the sharpening process.

[0021] Preferably, the guide rails are provided on both sides of the slide, and the cross section of the guide rails is V-shaped or semicircular, and rollers are provided on both sides of the slide to match the guide rails, and the outer peripheral surface of the roller is provided with an annular groove that matches the guide rail, and the cross section of the annular groove is V-shaped or semicircular corresponding to the guide rail. Based on this, during the knife sharpening process, the operator can more smoothly slide the knife to be sharpened driven by the floating upper frame and the slide back and forth along the guide rail, which saves labor and efficiency.

[0022] Preferably, the base is provided with limiters on both sides of the slide to prevent the slide from being separated from the guide rail. Based on this, when sharpening the knife, the operator drives the slide and the knife to be sharpened to slide back and forth along the guide rail, and the limiters can be used to limit the sliding stroke of the slide to prevent the slide from being separated from the guide rail.

[0023] Preferably, the limit member is a limit pin, and a guide hole corresponding to the limit pin is provided on the top surface of the base. The limit pin is slidably arranged in the corresponding guide hole. The depth of the guide hole is greater than the length of the limit pin, so that the limit pin can be completely accommodated in the guide hole. A lifting spring is provided between the limit pin and the bottom of the guide hole, so that the top of the limit pin is located above the guide hole. Based on this, during the process of disassembling or assembling the slide seat, the limit pin on one side of the slide seat can be pressed downward so that the limit pin is completely accommodated in the guide hole; then, the slide seat can be slid along the guide rail so that the slide seat passes over the limit pin completely accommodated in the guide hole, and then the slide seat is disassembled from the guide rail of the base or installed on the guide rail of the base. During the normal use of a fixed-angle tool sharpener, the limit pin moves upward under the action of the lifting spring, and the top of the limit pin is located above the guide hole, so that the sliding stroke of the slide seat is limited by the limit pin to prevent the slide seat from leaving the guide rail.

[0024] Preferably, the top of the base is provided with an installation groove with an opening facing in the direction, the grinding blade is installed in the installation groove, and the grinding blade is fixed in the installation groove by a magnetic suction member. In this way, on the one hand, the grinding blade can be conveniently installed on the base, and the grinding blade is fixed in the installation groove by a magnetic suction member, which can ensure that the grinding blade is firmly installed; on the other hand, the grinding blade can be conveniently replaced.

[0025] The beneficial effects of the utility model are:

[0026] Firstly, it can ensure the sharpening effect and effectively prevent the tool from getting stuck on the sharpening blade during the sharpening process.

[0027] Secondly, it can improve the application range of the fixed angle tool grinder, or grind tools with two different blade angles (blade angles corresponding to the inclination angle of the fixed angle bevel) BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The utility model is a three-dimensional structural schematic diagram of a fixed-angle tool grinder.

[0029] Figure 2 The utility model is a side view of a fixed-angle knife sharpening rack.

[0030] In the figure:

[0031] Base 1, guide rail 1.1, anti-slip pad 1.2;

[0032] Sharpening blade 2;

[0033] Sliding seat 3, vertical guide rod 3.0, vertical bolt 3.1, roller 3.2, annular groove 3.3;

[0034] Floating shelf 4;

[0035] Elastic element 5;

[0036] Tool fixing structure 6, fixed angle bevel 6.1, tool pressing plate 6.2, locking bolt 6.3, side opening 6.4;

[0037] Limiting member 7, limiting block 7.1;

[0038] Operation port 8;

[0039] Tool 9;

[0040] Lifting spring 10. DETAILED DESCRIPTION

[0041] Specific embodiment 1, as Figure 1 , Figure 2 As shown, a fixed-angle tool sharpening rack includes a base 1, a slide 3, a floating upper rack 4 and a tool fixing structure 6. A guide rail 1.1 is provided on the base 1. A sharpening blade 2 is provided on the top of the base 1. The slide 3 slides along the guide rail 1.1. A vertical guide rod 3.0 is provided on the slide 3. The floating upper rack 4 is located above the slide 3. The floating upper rack 4 slides up and down along the vertical guide rod 3.0. An elastic element 5 is provided between the floating upper rack 4 and the slide 3. The floating upper rack 4 slides upward along the vertical guide rod 3.0 under the action of the elastic element 5. The tool fixing structure 6 is arranged on the floating upper rack 4. The tool fixing structure 6 is used to fix the tool to be sharpened.

[0042] The specific use of a fixed angle tool grinder of this embodiment is as follows:

[0043] The tool 9 to be sharpened is fixed on the floating upper frame 4 through the tool fixing structure 6, and the blade edge of the tool to be sharpened is close to or abuts against the surface of the sharpening blade 2;

[0044] Next, the operator presses down the floating upper frame 4 and drives the tool to be sharpened downward (overcoming the force of the elastic element 5 acting on the floating upper frame 4), so that the cutting edge of the tool to be sharpened is close to the surface of the grinding blade 2; then, the tool to be sharpened driven by the floating upper frame 4 and the slide 3 slides back and forth along the guide rail 1.1, so that the cutting edge of the tool to be sharpened is ground on the grinding blade 2, thereby grinding out a cutting edge corresponding to the inclination angle of the fixed angle bevel 6.1, or grinding the existing cutting edge of the tool.

[0045] At the same time, during the sharpening process, the pressing force of the blade of the tool to be sharpened on the surface of the sharpening blade 2 is determined by the downward pressure of the floating upper frame 4 pressed down by the operator. Therefore, during the sharpening process, the operator can adjust the pressing force of the blade of the tool to be sharpened on the surface of the sharpening blade 2 at any time according to actual needs. In this way, on the one hand, the sharpening effect can be guaranteed; on the other hand, the tool can be effectively prevented from getting stuck on the sharpening blade 2 during the sharpening process. In addition, if the tool gets stuck on the sharpening blade 2 during the sharpening process, the operator can also conveniently solve this problem by reducing the downward pressure of the floating upper frame 4 or releasing the floating upper frame 4, so that the floating upper frame 4 and the slide 3 can drive the tool to be sharpened to slide back and forth along the guide rail 1.1 to sharpen the tool to be sharpened.

[0046] Specific embodiment 2, as Figure 1 , Figure 2 As shown, a fixed-angle tool grinding stand includes a base 1, a slide 3, a floating upper frame 4 and a tool fixing structure 6.

[0047] The bottom of the base 1 is provided with an anti-skid pad 1.2. A guide rail 1.1 is provided on the base 1. A grinding blade 2 is provided on the top of the base 1. The upper surface of the grinding blade 2 is parallel to the guide rail 1.1.

[0048] The slide 3 slides along the guide rail 1.1. A vertical guide rod 3.0 is provided on the slide 3. There are at least two vertical guide rods 3.0. In this embodiment, the vertical guide rods 3.0 are perpendicular to the upper surface of the grinding blade 2, and there are four vertical guide rods 3.0. A stopper is provided on the top of the vertical guide rod 3.0.

[0049] The floating upper frame 4 is located above the slide 3. The floating upper frame 4 slides up and down along the vertical guide rod 3.0. Specifically, the floating upper frame 4 is provided with a vertical through hole that matches the vertical guide rod 3.0, and the vertical guide rod 3.0 is inserted into the vertical through hole so that the floating upper frame 4 slides up and down along the vertical guide rod 3.0. The stopper at the top of the vertical guide rod 3.0 is located above the vertical through hole.

[0050] An elastic element 5 is provided between the floating upper frame 4 and the slide 3. The elastic element 5 is an elastic sheet or a compression spring. In this embodiment, the elastic element 5 is a compression spring, which is sleeved on the vertical guide rod 3.0. The floating upper frame 4 slides upward along the vertical guide rod 3.0 under the action of the elastic element 5 until the floating upper frame 4 abuts against the stopper.

[0051] The tool fixing structure 6 is arranged on the floating upper frame 4. The tool fixing structure 6 is used to fix the tool 9 to be sharpened. The tool fixing structure 6 includes a fixed angle inclined surface 6.1 and a tool pressing plate 6.2. The fixed angle inclined surface 6.1 is arranged on the floating upper frame 4. The fixed angle inclined surface 6.1 is inclinedly distributed. The tool pressing plate 6.2 is located above the fixed angle inclined surface 6.1. The tool pressing plate 6.2 is connected to the floating upper frame 4 through a locking bolt 6.3.

[0052] The specific use of a fixed angle tool grinder of this embodiment is as follows:

[0053] The tool to be sharpened 9 is fixed to the floating upper frame 4 through the tool fixing structure 6, and the blade of the tool to be sharpened is close to or abuts on the surface of the grinding blade 2; specifically, the tool to be sharpened is placed closely on the fixed angle bevel 6.1, and the blade of the tool to be sharpened is close to or abuts on the surface of the grinding blade 2, and the grinding angle of the tool to be sharpened is positioned through the fixed angle bevel 6.1; then, the locking bolt 6.3 is locked, and the tool to be sharpened is pressed and fixed on the fixed angle bevel 6.1 through the tool pressing plate 6.2. The tool to be sharpened is fixed to the floating upper frame 4 through the tool fixing structure 6, which is convenient to operate, the tool fixing structure 6 is stable, and the grinding angle of the tool to be sharpened is accurately positioned to ensure the subsequent sharpening effect.

[0054] Next, the operator presses down the floating upper frame 4 and drives the tool to be sharpened downward (overcoming the force of the elastic element 5 acting on the floating upper frame 4), so that the cutting edge of the tool to be sharpened is close to the surface of the grinding blade 2; then, the tool to be sharpened driven by the floating upper frame 4 and the slide 3 slides back and forth along the guide rail 1.1, so that the cutting edge of the tool to be sharpened is ground on the grinding blade 2, thereby grinding out a cutting edge corresponding to the inclination angle of the fixed angle bevel 6.1, or grinding the existing cutting edge of the tool.

[0055] At the same time, during the sharpening process, the pressing force of the blade of the tool to be sharpened on the surface of the sharpening blade 2 is determined by the downward pressure of the floating upper frame 4 pressed down by the operator. Therefore, during the sharpening process, the operator can adjust the pressing force of the blade of the tool to be sharpened on the surface of the sharpening blade 2 at any time according to actual needs. In this way, on the one hand, the sharpening effect can be guaranteed; on the other hand, the tool can be effectively prevented from getting stuck on the sharpening blade 2 during the sharpening process. In addition, if the tool gets stuck on the sharpening blade 2 during the sharpening process, the operator can also conveniently solve this problem by reducing the downward pressure of the floating upper frame 4 or releasing the floating upper frame 4, so that the floating upper frame 4 and the slide 3 can drive the tool to be sharpened to slide back and forth along the guide rail 1.1 to sharpen the tool to be sharpened.

[0056] Further, such as Figure 1 , Figure 2As shown, there are two fixed angle bevels 6.1 in the tool fixing structure 6. The two fixed angle bevels 6.1 are distributed in an inverted V shape, and the inclination angles of the two fixed angle bevels 6.1 are different. The tool pressing plate 6.2 corresponds to the upper part of the two fixed angle bevels 6.1. Based on this, the operator can place the tool to be sharpened on one of the fixed angle bevels 6.1 according to the grinding angle requirements of different tools, and position the grinding angle of the tool to be sharpened through the fixed angle bevel 6.1; then, the locking bolt 6.3 is locked, and the tool to be sharpened is pressed and fixed on the fixed angle bevel 6.1 through the tool pressing plate 6.2, and is ground, so as to grind out the blade angle corresponding to the inclination angle of the fixed angle bevel 6.1, or grind the existing blades of different angles on the tool, thereby improving the application range of the fixed angle tool grinding rack.

[0057] In this embodiment, the inclination angle of one of the two fixed angle bevels 6.1 is 25 degrees, and the inclination angle of the other fixed angle bevel 6.1 is 30 degrees. In this way, the two fixed angle bevels 6.1 can be used to grind two kinds of tools with blade angles of 25 degrees and 30 degrees; or the two fixed angle bevels 6.1 can grind a tool with a blade angle of 25 degrees or 30 degrees.

[0058] Of course, it should be noted that the inclination angles of the two fixed-angle slopes 6.1 can also be set to other angles as needed. For example, the inclination angle of one of the fixed-angle slopes 6.1 is 20-30 degrees, and the inclination angle of the other fixed-angle slope 6.1 is 30-50 degrees; or the inclination angle of one of the fixed-angle slopes 6.1 is 20-40 degrees, and the inclination angle of the other fixed-angle slope 6.1 is 40-60 degrees.

[0059] In one implementation of this embodiment, Figure 1 As shown, there are two grinding blades 2, which are distributed in sequence along the guide rail 1.1, one grinding blade 2 corresponds to the tool installed on one fixed angle bevel 6.1, and the other grinding blade 2 corresponds to the tool installed on the other fixed angle bevel 6.1.

[0060] In another implementation manner of this embodiment, the grinding blade 2 is a single piece (not shown in the figure), and the cutting edges of the tools installed on the two fixed-angle bevels can be ground on the same grinding blade 2.

[0061] Further, such as Figure 1 , Figure 2As shown, the guide rails 1.1 are provided on both sides of the slide 3. The cross section of the guide rails 1.1 is V-shaped or semicircular. The rollers 3.2 cooperating with the guide rails 1.1 are provided on both sides of the slide 3. The outer peripheral surface of the roller 3.2 is provided with an annular groove 3.3 cooperating with the guide rails 1.1, and the cross section of the annular groove 3.3 is V-shaped or semicircular corresponding to the guide rails 1.1. Based on this, during the knife sharpening process, the operator can more smoothly slide the knife to be sharpened back and forth along the guide rails 1.1 driven by the floating upper frame 4 and the slide 3, which saves labor and efficiency.

[0062] Of course, it should be noted that the guide rail 1.1 may also be other guide rails 1.1 on the market.

[0063] Furthermore, a vertical bolt 3.1 is provided on the slide 3, and the vertical bolt 3.1 is connected to the slide 3 by a thread. The vertical bolt 3.1 constitutes the vertical guide rod 3.0, and the bolt head of the vertical bolt 3.1 constitutes the stopper. The floating upper frame 4 slides upward along the vertical guide rod 3.0 and rests on the bolt head of the vertical bolt 3.1 under the action of the elastic element 5. The vertical bolt 3.1 is used as the vertical guide rod 3.0, so that it is not only convenient to install the vertical bolt 3.1 and the floating upper frame 4, but also the elastic force of the elastic element 5 on the floating upper frame 4 can be adjusted by locking or loosening the vertical bolt 3.1, so as to improve the user experience of the user during the sharpening process.

[0064] Further, such as Figure 1 , Figure 2 As shown, the base 1 is provided with stoppers 7 on both sides of the slide 3, and the stoppers 7 are used to limit the sliding stroke of the slide 3 along the guide rail 1.1 to prevent the slide 3 from being separated from the guide rail 1.1. The stoppers 7 are located on the upper surface of the base 1. Based on this, when sharpening a knife, the operator drives the slide 3 and the knife to be sharpened to slide back and forth along the guide rail 1.1, and the stoppers 7 can be used to limit the sliding stroke of the slide 3 to prevent the slide 3 from being separated from the guide rail 1.1.

[0065] The limiting member 7 is connected to the base 1 by bolts, or the limiting member 7 is connected to the base 1 by welding, or the limiting member 7 and the base 1 are integrally formed.

[0066] In this embodiment, the limit member 7 is a limit pin. The top surface of the base 1 is provided with guide holes corresponding to the limit pins one by one. The guide holes are extended up and down. The limit pin is slidably set in the corresponding guide hole, and the hole depth of the guide hole is greater than the length of the limit pin, so that the limit pin can be completely accommodated in the guide hole. A lifting spring 10 is provided between the limit pin and the bottom of the guide hole, so that the top of the limit pin is located above the guide hole. Based on this, in the process of disassembling or assembling the slide 3, the limit pin on one side of the slide 3 can be pressed downward so that the limit pin is completely accommodated in the guide hole; then, the slide 3 can be slid along the guide rail 1.1 so that the slide 3 passes over the limit pin that is completely accommodated in the guide hole, and then the slide 3 is disassembled from the guide rail 1.1 of the base 1 or installed on the guide rail 1.1 of the base 1. During normal use of a fixed-angle tool grinder, the limit pin moves upward under the action of the lifting spring, and the top of the limit pin is located above the guide hole, so that the sliding stroke of the slide 3 is limited by the limit pin to prevent the slide 3 from leaving the guide rail 1.1.

[0067] Specifically, a step surface is provided on the upper part of the inner wall of the guide hole. A stop block 7.1 cooperating with the step surface is provided on the outer side of the stop pin, and the stop block is located below the step surface. The stop pin moves upward under the action of the lifting spring 10 until the stop block abuts against the step surface, at which time the top of the stop pin is located above the guide hole.

[0068] Further, such as Figure 1 As shown, the top of the base 1 is provided with an opening-facing mounting groove. The grinding blade 2 is installed in the mounting groove. The grinding blade 2 is fixed in the mounting groove by adsorption by a magnetic element. For example, a magnetic element is provided on the lower surface of the grinding blade 2, and a magnetic element is also provided on the inner bottom surface of the mounting groove. The magnetic element is a magnet. In this way, on the one hand, the grinding blade 2 can be conveniently installed on the base 1, and the grinding blade 2 is fixed in the mounting groove by adsorption by the magnetic element, which can ensure that the grinding blade 2 is firmly installed; on the other hand, the grinding blade 2 can be conveniently replaced.

[0069] In the present embodiment, the two opposite sides of the mounting groove are also provided with an operating opening 8 for the operator's fingers to enter. Thus, during the process of disassembling the sharpening blade 2, the operator's fingers can enter the operating opening, pinch the sharpening blade 2, and take the sharpening blade 2 out.

[0070] Further, such as Figure 1 As shown, the tool pressing plate 6.2 is provided with two bolt holes penetrating the upper and lower surfaces of the tool pressing plate 6.2, the two bolt holes are arranged and distributed in a direction perpendicular to the guide rail 1.1, and the two bolt holes are provided with the locking bolts 6.3. The same tool pressing plate is connected to the floating upper frame through the locking bolts 6.3 in the two bolt holes. When the tool to be sharpened is fixed on the tool fixing structure 6, the tool to be sharpened is located between the locking bolts 6.3 in the two bolt holes.

[0071] In one implementation of this embodiment, Figure 1 As shown, one side of one of the two bolt holes is provided with a side opening 6.4 connected to one side of the tool pressing plate 6.2, and the locking bolt 6.3 in the bolt hole can be moved out through the side opening 6.4. Based on this, when fixing the tool to be sharpened on the tool fixing structure 6, the two locking bolts 6.3 can be loosened first, and then, by rotating the tool pressing plate 6.2, the locking bolt 6.3 in the bolt hole with the side opening can be moved out through the side opening; then, the tool to be sharpened is closely attached to the fixed angle inclined surface 6.1, the tool to be sharpened is located between the locking bolts 6.3 in the two bolt holes, and the blade of the tool to be sharpened is close to or abuts on the surface of the grinding blade 2; then, by rotating the tool pressing plate 6.2, the locking bolt 6.3 located outside the bolt hole enters the bolt hole through the side opening; then the locking bolt 6.3 is locked, and the tool to be sharpened is pressed and fixed on the fixed angle inclined surface 6.1 through the tool pressing plate 6.2; this can further facilitate the fixing operation of the tool to be sharpened.

[0072] In another implementation of the present embodiment, one side of the two bolt through holes is provided with a side opening connected to one side of the tool pressing plate 6.2, and the locking bolt 6.3 in the bolt through hole can be moved out through the side opening. Based on this, when fixing the tool to be sharpened on the tool fixing structure 6, the two locking bolts 6.3 can be loosened first, and then the tool pressing plate 6.2 is moved to make the locking bolt 6.3 move out through the side opening, so that the tool pressing plate 6.2 is removed; then, the tool to be sharpened is closely attached to the fixed angle inclined surface 6.1, the tool to be sharpened is located between the locking bolts 6.3 in the two bolt through holes, and the blade of the tool to be sharpened is close to or abuts against the surface of the grinding blade 2; then, the tool pressing plate 6.2 is installed, and the two locking bolts 6.3 enter the bolt through hole through the side opening; then the locking bolt 6.3 is locked, and the tool to be sharpened is pressed and fixed on the fixed angle inclined surface 6.1 through the tool pressing plate 6.2; this can further facilitate the fixing operation of the tool to be sharpened.

[0073] The above description is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A fixed angle tool sharpener, comprising: A base, on which a guide rail is arranged, and a sharpening blade is arranged on the top of the base; A slide seat slides along the guide rail and a vertical guide rod is provided on the slide seat; The floating upper frame is located above the slide seat and slides up and down along the vertical guide rod. An elastic element is provided between the floating upper frame and the slide seat, and the floating upper frame slides upward along the vertical guide rod under the action of the elastic element. The tool fixing structure for fixing the tool is arranged on the floating upper frame.

2. A fixed angle tool grinder according to claim 1, characterized in that: The tool fixing structure comprises: A fixed angle slope is arranged on the floating upper frame; The tool pressing plate is located above the fixed angle inclined plane, and the tool pressing plate is connected to the floating upper frame through locking bolts.

3. A fixed angle tool grinder according to claim 2, characterized in that: There are two fixed angle inclined surfaces, which are distributed in an inverted V shape and have different inclination angles. The tool pressing plates are located above the two fixed angle inclined surfaces.

4. The fixed angle tool grinder according to claim 3, characterized in that: The inclination angle of one of the fixed angle slopes is 25 degrees, and the inclination angle of the other fixed angle slope is 30 degrees.

5. A fixed angle tool grinder according to claim 2, 3 or 4, characterized in that: The tool pressing plate is provided with two bolt holes which pass through the upper and lower surfaces of the tool pressing plate. The two bolt holes are arranged and distributed in a direction perpendicular to the guide rail. The two bolt holes are provided with locking bolts. One side of one of the bolt holes is provided with a side opening which is connected to one side of the tool pressing plate. The locking bolt in the bolt hole can be moved out through the side opening.

6. A fixed angle tool grinder according to claim 1, 2, 3 or 4, characterized in that: The slide seat is provided with a vertical bolt which is threadedly connected to the slide seat. The vertical bolt constitutes the vertical guide rod. The floating upper frame slides upward along the vertical guide rod and abuts against the bolt head of the vertical bolt under the action of the elastic element.

7. A fixed angle tool grinder according to claim 1, 2, 3 or 4, characterized in that: The guide rails are provided on both sides of the slide, and the cross-section of the guide rails is V-shaped or semicircular. Rollers cooperating with the guide rails are provided on both sides of the slide, and the outer peripheral surface of the roller is provided with an annular groove cooperating with the guide rail. The cross-section of the annular groove is V-shaped or semicircular corresponding to the guide rail.

8. A fixed angle tool grinder according to claim 1, 2, 3 or 4, characterized in that: The base is provided with limit pieces on both sides of the slide seat to prevent the slide seat from leaving the guide rail.

9. The fixed angle tool grinder according to claim 8, characterized in that: The limiting member is a limiting pin, and the top surface of the base is provided with a guide hole corresponding to the limiting pin one by one. The limiting pin is slidably arranged in the corresponding guide hole. The hole depth of the guide hole is greater than the length of the limiting pin so that the limiting pin can be completely accommodated in the guide hole. A lifting spring is provided between the limiting pin and the bottom of the guide hole so that the top of the limiting pin is located above the guide hole.

10. A fixed angle tool grinder according to claim 1 or 2 or 3 or 4, characterized in that: The top of the base is provided with an installation groove with an opening facing in the direction of the base, and the grinding blade is installed in the installation groove, and the grinding blade is fixed in the installation groove by adsorption through a magnetic attraction piece.

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