Knife sharpening mechanism

Abstract

The utility model discloses a knife sharpening mechanism which comprises a movable part, a guide assembly capable of guiding the movable part to rotate along an axis A, a knife sharpening part arranged on the movable part, and a moving mechanism capable of driving the movable part to reciprocate along the extension direction of the knife sharpening part, the movable piece rotates to drive the cutter grinding part to approach the blade part so as to have a position in contact with the blade part, or to drive the cutter grinding part to be far away from the blade part so as to have a position in contact with the blade part; when the cutter sharpening part is in contact with the blade part, the movable part moves in the extending direction of the blade part so as to polish the blade part, and the cutter sharpening device has the advantage of being good in cutter sharpening effect; the utility model relates to the technical field of knife sharpening mechanisms.

Description

TECHNICAL FIELD

[0001] The utility model relates to a knife sharpening mechanism technical field, more exactly relates to a kind of knife sharpening mechanism. BACKGROUND

[0002] The current market has many kinds of knife sharpening mechanisms, but most of them have some shortcomings. Some knife sharpening mechanisms cannot accurately position the knife, which causes the knife to shake during polishing and affects the polishing effect. Some knife sharpening mechanisms cannot ensure that the blade sharpening part fully contacts the blade during polishing, which affects the quality and efficiency of knife polishing.

[0003] Therefore, it is necessary to develop a new type of knife sharpening mechanism to solve the problems existing in the prior art. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to provide a kind of knife sharpening mechanism, it can accurately pre-position the knife, make blade sharpening part fully contact the blade, realize uniform, automatic polishing, and improve polishing effect.

[0005] A kind of knife sharpening mechanism, comprising:

[0006] A knife positioning mechanism for pre-positioning the knife;

[0007] A movable part is rotatably arranged;

[0008] A blade sharpening part is arranged on the movable part;

[0009] A moving mechanism for driving the movable part to move;

[0010] The movable part can drive the blade sharpening part to approach the blade to have a position in contact with the blade, or drive the blade sharpening part to move away from the blade to have a position out of contact with the blade;

[0011] In the state that the blade sharpening part contacts the blade, the movable part moves along the extension direction of the blade to polish the blade.

[0012] As an improvement of the utility model, the knife sharpening mechanism further comprises a channel guide mechanism, the channel guide mechanism comprises a first guide slot and a second guide slot, and the first guide slot and the second guide slot are symmetrically arranged on both sides of the knife;

[0013] The movable part is further provided with a transmission part, and the transmission part cooperates with the channel guide mechanism;

[0014] When the transmission part moves in the channel guide mechanism, it can drive the movable part to rotate, so that the movable part rotates to make the blade sharpening part have a position in contact with the blade or a position out of contact with the blade.

[0015] As a kind of improvement of the utility model, the first guide groove is formed by the first advancing section and the first return section extending front and back, and the rear end of the first return section is communicated with the rear end of the first advancing section.

[0016] The first advancing section center line and the movable part center line B form an acute angle α, the first return section center line and the movable part center line B form an acute angle b, and the angle α is smaller than the angle b.

[0017] When the transmission part is located in the first return section, the sharpening part is on the right side of the cutter blade and has a gap with the right side surface; the transmission part enters the first advancing section from the first return section, the movable part rotates, and the included angle between the sharpening part and the cutter blade is reduced to the side surface contact.

[0018] As a kind of improvement of the utility model, the channel guide mechanism is further provided with a second guide groove.

[0019] The second guide groove includes a second advancing section and a second return section extending front and back, and the rear end of the second return section is communicated with the rear end of the second advancing section.

[0020] The second advancing section center line and the movable part center line B form an acute angle aa, the second return section center line and the movable part center line B form an acute angle bb, and the angle aa is smaller than the angle bb.

[0021] When the transmission part is in the second return section, the sharpening part is on the left side of the cutter blade and has a gap with the right side surface; the transmission part enters the second advancing section from the second return section, the movable part rotates, and the included angle between the sharpening part and the cutter blade is reduced to the side surface contact.

[0022] As a kind of improvement of the utility model, the front end of the first advancing section and the front end of the second return section are communicated and arranged through the first switching guide groove, and the front end of the second advancing section and the front end of the first return section are communicated and arranged through the second switching guide groove.

[0023] The transmission part drives from the first advancing section to the front end of the second return section, and the movable part drives the sharpening part to switch from the position state of being placed on the right side of the blade to the position state of being placed on the left side of the blade.

[0024] As a kind of improvement of the utility model, the front end of the first return section and the front end of the second return section are respectively located at the front end of the first advancing section and the second advancing section.

[0025] The first switching guide groove and the second switching guide groove are arranged in the structure of "X" intersection.

[0026] A guide mechanism is arranged at the intersection, and the guide mechanism includes a first blocking piece and a second blocking piece.

[0027] The first blocking piece is rotatably arranged above the first intersection of the first switching guide slot, and a driving piece entering the first switching guide slot can form a blocking cooperation with the first blocking piece to drive the first blocking piece to rotate forward above the second intersection of the second switching guide slot.

[0028] The second blocking piece is rotatably arranged above the third intersection of the second switching guide slot, and a driving piece entering the second switching guide slot can form a blocking cooperation with the second blocking piece to drive the second blocking piece to rotate forward above the fourth intersection of the first switching guide slot.

[0029] As an improvement of the utility model, the cutter positioning mechanism is arranged above the movable piece, the cutter positioning mechanism comprises two clamping jaws,

[0030] The two clamping jaws are located at two sides of the cutter handle, and a clamping space is formed between the clamping inner sides to clamp the cutter handle,

[0031] The two clamping jaws can rotate inwardly or outwardly to change the size of the clamping space.

[0032] As an improvement of the utility model, the cutter positioning mechanism further comprises a slide block movable forwardly and rearwardly, the slide block is arranged below the two clamping jaws, a guide column is arranged at the upper end of the slide block, a cooperation groove is arranged at the inner side of the clamping jaw, and the cooperation groove is penetrated by the guide column,

[0033] The slide block moves forwardly and rearwardly, the guide column drives the clamping jaw to rotate through the cooperation groove, and the adjustment of the clamping space is realized.

[0034] As an improvement of the utility model, the cutter positioning mechanism further comprises a retaining sleeve, the retaining sleeve is arranged with a retaining space, the retaining space is oppositely arranged with the clamping space, and the retaining space is located in front of the clamping space.

[0035] The retaining sleeve is elastically deformed to change the size of the retaining space.

[0036] Compared with the prior art, the utility model has the following remarkable advantages:

[0037] The cutter positioning mechanism can accurately pre-position the cutter through the cooperation of the clamping jaw, the slide block, the guide column and the retaining sleeve, effectively avoids the shaking of the cutter during the polishing process, and ensures the stability and consistency of the polishing effect.

[0038] The movable piece can rotate around the axis A, so that the blade grinding part can better fit the blade side of the cutter, and the polishing effect is improved.

[0039] The moving mechanism drives the movable part to move along the extension direction of the tool blade, realizes the continuous contact between the sharpening part and the blade, guarantees the uniform and automatic polishing of the side surface of the tool blade, and improves the polishing efficiency and quality.

[0040] The design of the channel guide mechanism and the guide mechanism enables the transmission part to drive the sharpening part to switch positions flexibly on both sides of the tool blade, and facilitates the comprehensive polishing of both sides of the tool blade. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is the structural schematic diagram of the utility model.

[0042] Figure 2 It is the structural schematic diagram of the movable part and the moving mechanism of the utility model.

[0043] Figure 3 It is the front view of the utility model.

[0044] Figure 4 It is the Figure 3 Structural schematic diagram of the section view of the utility model in F-F direction.

[0045] Figure 5 It is the Figure 4 Structural enlarged schematic diagram of the utility model in G place.

[0046] Figure 6 It is the structural schematic diagram of the movable part and the sharpening part of the utility model.

[0047] Figure 7 It is the Figure 6 Structural schematic diagram of the utility model in the half section state.

[0048] Figure 8 It is the structural schematic diagram of the tool fixing mechanism of the utility model when fixing the tool.

[0049] Figure 9 It is the structural schematic diagram of the tool fixing mechanism of the utility model.

[0050] Figure 10 It is the structural schematic diagram of the clamping jaw of the tool fixing mechanism of the utility model.

[0051] Figure 11 It is the structural schematic diagram of the guide slot of the utility model.

[0052] Figure 12 It is the Figure 11 Structural enlarged schematic diagram of the utility model in H place.

[0053] As shown in the figure: 1, the movable element; 2, the sharpening part; 3, the moving mechanism; 4, the transmission element; 5, the first guide groove; 5.1, the first forward section; 5.2, the first return section; 6, the second guide groove; 6.1, the second forward section; 6.2, the second return section; 7, the first switching guide groove; 7.1, the first intersection; 7.2, the fourth intersection; 8, the second switching guide groove; 8.1, the second intersection; 8.2, the third intersection; 9, the first blocking element; 10, the second blocking element; 11, the sliding block; 11.1, the guide column; 11.2, the operating rod; 12, the clamping jaw; 12.1, the clamping part; 12.2, the matching groove; 13, the elastic element; 14, the lead screw; 15, the lead screw nut; 16, the first motor; 17, the mounting frame; 18, the second motor; 19, the abrasive belt frame; 19.1, the rotating wheel; 20, the one-way blocking element; 21, the blade part; 22, the retaining sleeve. DETAILED DESCRIPTION

[0054] The utility model will be further described below in combination with the drawings and specific embodiments.

[0055] Please refer to Figures 1-12 As shown in the figure,

[0056] A knife sharpening mechanism comprises:

[0057] A tool positioning mechanism for pre-positioning a tool;

[0058] A movable element 1 rotatably arranged;

[0059] A sharpening part 2 arranged on the movable element 1;

[0060] A moving mechanism 3 for driving the movable element 1 to move;

[0061] The rotation of the movable element 1 can drive the sharpening part 2 to approach the blade part 21 to have a position in contact with the blade part 21, or drive the sharpening part 2 to move away from the blade part 21 to have a position out of contact with the blade part 21;

[0062] In the state that the sharpening part 2 is in contact with the blade part 21, the movable element 1 moves along the extension direction of the blade part 21 to polish the blade part 21.

[0063] If a user needs to perform a knife sharpening operation, first, the tool is pre-positioned by the tool positioning mechanism, and the blade part 21 of the tool is arranged downward with the tip forward;

[0064] Further, the movable element 1 is moved to the state that the sharpening part 2 is in contact with the blade part 21 of the tool;

[0065] At this time, the moving mechanism 3 drives the movable element 1 to move along the extension (forward and backward) direction of the blade part 21, and the sharpening part 2 can polish the blade part 21.

[0066] The tool positioning mechanism is arranged to pre-position the tool, and the stable tool can make the blade part 21 more stably contact with the sharpening part 2, thereby improving the polishing effect.

[0067] The moving mechanism 3 can move the movable part 1 along the extension (forward and backward) direction of the tool blade part 21, the sharpening part 2 is in continuous contact with the blade part 21, and the polishing of the side surface of the blade part 21 is realized.

[0068] After the blade part 21 is polished, the movable part 1 is rotated to be separated from the blade part 21, so as to facilitate the user to take the tool.

[0069] As an improvement of the utility model, the knife grinding mechanism further comprises a channel guide mechanism, the channel guide mechanism comprises a first guide groove 5 and a second guide groove 6, and the first guide groove 5 and the second guide groove 6 are symmetrically distributed on both sides of the tool.

[0070] The movable part 1 is further provided with a transmission part 4, and the transmission part 4 cooperates with the channel guide mechanism.

[0071] When the transmission part 4 moves in the channel guide mechanism, the movable part 1 can be driven to rotate, so that the movable part 1 rotates, so that the sharpening part 2 has a position of contacting the tool blade part 21 or a position of being separated from the tool blade part 21.

[0072] As an improvement of the utility model, the first guide groove 5 is composed of a first forward segment 5.1 extending forward and backward and a first return segment 5.2, and the rear end of the first return segment 5.2 is communicated with the rear end of the first forward segment 5.1.

[0073] The center line of the first forward segment 5.1 and the center line B of the movable part 1 form an acute angle a, the center line of the first return segment 5.2 and the center line B of the movable part 1 form an acute angle b, and the acute angle a is smaller than the acute angle b.

[0074] When the transmission part 4 is located in the first return segment 5.2, the sharpening part 2 is on the right side of the tool blade part 21 and has a gap with the right side surface; the transmission part 4 enters the first forward segment 5.1 from the first return segment 5.2, the movable part 1 rotates, and the included angle between the sharpening part 2 and the tool blade part 21 is reduced to the side surface contact.

[0075] As an improvement of the utility model, the channel guide mechanism is further provided with a second guide groove 6.

[0076] The second guide groove 6 comprises a second forward segment 6.1 extending forward and backward and a second return segment 6.2, and the rear end of the second return segment 6.2 is communicated with the rear end of the second forward segment 6.1.

[0077] The center line of the second advancing section 6.1 forms an acute angle aa with the center line B of the movable part 1, and the center line of the second returning section 6.2 forms an acute angle bb with the center line B of the movable part 1, and the angle aa is smaller than the angle bb;

[0078] When the transmission part 4 is in the second returning section 6.2, the sharpening part 2 is located on the left side of the blade part 21 and has a gap with the right side surface; when the transmission part 4 enters the second advancing section 6.1 from the second returning section 6.2, the movable part 1 rotates, so that the angle between the sharpening part 2 and the blade part 21 is reduced to the side surface contact.

[0079] After the above improvement, the first advancing section 5.1, the first returning section 5.2, the second advancing section 6.1, and the second returning section 6.2 are all inclined structures, and form acute angles with the center line B of the movable part 1;

[0080] The center line of the first advancing section 5.1 forms an angle a with the center line B of the movable part 1, and the first returning section 5.2 forms an angle b with the center line B of the movable part 1,

[0081] The center line of the second advancing section 6.1 forms an angle aa with the center line B of the movable part 1, and the second returning section 6.2 forms an angle bb with the center line B of the movable part 1;

[0082] The angle a is consistent with the angle aa, and the angle b is consistent with the angle bb;

[0083] When the transmission part 4 enters the first returning section 5.2 or the second returning section 6.2, the angle change of the angle causes the movable part 1 to rotate away from the blade part 21, which is fed back to the sharpening part 2, the angle between the sharpening part 2 and the blade part 21 is increased, and there is a gap between the sharpening part 2 and the side surface of the blade part 21, so that the sharpening part 2 cannot contact the blade part 21, at this time, the sharpening part 2 cannot play a grinding role on the blade part 21,

[0084] When the transmission part 4 enters the first advancing section 5.1 or the second advancing section 6.1 from the returning section, the angle change of the angle causes the movable part 1 to rotate close to the blade part 21, which is fed back to the sharpening part 2, the angle between the sharpening part 2 and the blade part 21 is reduced, and the gap between the sharpening part 2 and the blade part 21 is reduced to the side surface contact, at this time, the sharpening part 2 can play a grinding role on the blade part 21.

[0085] After the above improvement, the angle change of the guide groove is used to drive the rotation of the movable part 1 by the transmission part 4, and then fed back to the sharpening part 2, which has the characteristics of stable and reliable operation.

[0086] In this embodiment, two movable parts 1 with overlapping rotating shafts can be used. The two movable parts 1 are driven to move by the moving mechanism 3 respectively. The two movable parts 1 are respectively provided with a grinding part 2. The transmission part 4 of the two movable parts 1 independently cooperates with the first guide groove 5 or the second guide groove 6. The grinding part 2 of the movable part 1 that cooperates with the first guide groove 5 grinds the right side of the blade 21, and the grinding part 2 of the movable part 1 that cooperates with the second guide groove 6 grinds the left side of the blade 21.

[0087] When a channel guide mechanism is used, the transmission component 4 is an elastic pin, which can elastically extend and retract axially.

[0088] Please see Figure 5 As shown, the transmission component 4 uses an elastic pin and is axially extendable and retractable. Preferably, the groove depth of the first forward section 5.1 is greater than the groove depth of the first return section 5.2, and the groove depth of the second forward section 6.1 is greater than the groove depth of the second return section 6.2.

[0089] The elastic, axially extendable transmission component 4, after entering the first forward section 5.1 from the first return section 5.2, can extend and fit into the first forward section 5.1, thus avoiding incorrect return to the first return section 5.2;

[0090] After entering the second forward segment 6.1 from the second return segment 6.2, it can extend and fit into the second forward segment 6.1, avoiding incorrect return to the second return segment 6.2.

[0091] Please see Figure 4 , Figure 7 As shown, the transmission component 4 and the grinding part 2 are arranged opposite each other along the same radial direction of the movable component 1.

[0092] The transmission member 4 and the grinding part 2, which are arranged along the same radial direction, can provide more effective feedback to the grinding part 2 when the transmission member 4 is in transmission cooperation with the channel guide mechanism or the track guide mechanism.

[0093] Please see Figure 2 , Figure 4 As shown, the first forward section 5.1 and the second forward section 6.1 are arranged symmetrically along the center line B of the movable part 1, and the first return section 5.2 and the second return section 6.2 are arranged symmetrically along the center line B of the movable part 1.

[0094] The above improvements make the structural layout more reasonable and the distance between it and the blade 21 more consistent, so that it can more effectively and evenly grind the blade.

[0095] As an improvement of the utility model, the front end of the first advancing section 5.1 and the front end of the second returning section 6.2 are communicated by the first switching guide groove 7, and the front end of the second advancing section 6.1 and the front end of the first returning section 5.2 are communicated by the second switching guide groove 8.

[0096] The transmission member 4 travels from the first advancing section 5.1 to the front end of the second returning section 6.2, and the movable member 1 drives the sharpening part 2 to switch from the position state of being placed on the right side of the blade part 21 to the position state of being placed on the left side of the blade part 21.

[0097] In the embodiment, only one movable member 1 is used, and the rear end of the first advancing section 5.1 is used as the starting point of the transmission member 4, at this time, the sharpening part 2 is in contact with the rear end of the right side surface of the blade part 21.

[0098] Further, the moving mechanism 3 drives the movable member 1 to travel forward along the first advancing section 5.1, the transmission member 4 continuously advances in the first advancing section 5.1, the first advancing section 5.1 has no angle change, the movable member 1 cannot rotate, the sharpening part 2 continuously travels forward along the path of the blade part 21, and consistent and efficient polishing is performed on the right side surface of the blade part 21.

[0099] Further, the moving mechanism 3 continues to drive the movable member 1 to travel forward, the transmission member 4 enters the position opposite to the rear end of the first returning section 5.2 from the first switching guide groove 7,

[0100] At this time, the moving mechanism 3 drives the movable member 1 to travel backward, the transmission member 4 enters the front end of the second returning section 6.2, due to the effect of the included angle of the second returning section 6.2, the movable member 1 rotates to the position that the sharpening part 2 is placed on the left side of the blade part 21, and a gap is formed between the sharpening part 2 and the blade part 21.

[0101] The transmission member 4 travels backward along the second returning section 6.2 until it enters the rear end of the second advancing section 6.1, under the effect of the included angle of the second advancing section 6.1, the movable member 1 rotates to the position that the sharpening part 2 is in contact with the left side surface of the blade part 21,

[0102] Further, the moving mechanism 3 drives the movable member 1 to travel forward, the transmission member 4 continuously travels forward in the second advancing section 6.1, and the sharpening part 2 performs consistent and efficient polishing on the left side surface of the blade part 21.

[0103] Further, the transmission member 4 enters the second switching guide groove 8 and enters the rear end of the first returning section 5.2, the moving mechanism 3 drives the movable member 1 to travel backward, and the transmission member 4 travels along the first returning section 5.2 to the rear end.

[0104] After the above improvement, the two side surfaces of the blade part 21 can be ground by using one movable member 1 and the sharpening part 2 thereof, and the utility model has the characteristics of consistent polishing effect, simple structure and relatively low cost.

[0105] When the movable element 1 is adopted, preferably, unidirectional blocking members 20 are arranged at the rear ends of the first return section 5.2 and the second return section 6.2 respectively, the unidirectional blocking members 20 play the role of blocking and limiting at the rear ends, when the transmission element 4 runs to the rear end, the unidirectional blocking members 20 can be driven to rotate outward, so that the rear ends of the first advancing section 5.1 and the second advancing section 6.1 are exposed, the transmission element 4 can enter the rear end of the first advancing section 5.1 or the second advancing section 6.1, after the transmission element 4 enters, the unidirectional blocking members 20 can be elastically reset and turn back to the rear ends of the first return section 5.2 and the second return section 6.2;

[0106] After the above improvement, the movable element 1 can be prevented from entering the first return section 5.2 or the second return section 6.2 by mistake when advancing forward, so that the device has high operation reliability.

[0107] As an improvement of the utility model, the front ends of the first return section 5.2 and the second return section 6.2 are respectively located at the front ends of the first advancing section 5.1 and the second advancing section 6.1.

[0108] The first switching guide groove 7 and the second switching guide groove 8 are arranged in an "X" intersecting structure.

[0109] A guide mechanism is arranged at the intersecting part, and the guide mechanism comprises a first blocking member 9 and a second blocking member 10.

[0110] The first blocking member 9 is rotatably arranged above the first intersection 7.1 of the first switching guide groove 7, and the transmission element 4 entering the first switching guide groove 7 can form blocking cooperation with the first blocking member 9, so as to drive the first blocking member 9 to rotate forward to above the second intersection 8.1 of the second switching guide groove 8.

[0111] The second blocking member 10 is rotatably arranged above the third intersection 8.2 of the second switching guide groove 8, and the transmission element 4 entering the second switching guide groove 8 can form blocking cooperation with the second blocking member 10, so as to drive the second blocking member 10 to rotate forward to the fourth intersection 7.2 of the first switching guide groove 7.

[0112] After the above improvement, the first switching guide groove 7 and the second switching guide groove 8 are arranged in an intersecting manner, so that the structure is more compact, which is beneficial to the miniaturization of the device.

[0113] When the transmission member 4 drives the first blocking member 9 to rotate forward to above the second intersection 8.1 of the second switching guide groove 8, and the second blocking member 10 is still positioned at the third intersection 8.2 of the second switching guide groove 8, the first blocking member 9 prevents the transmission member 4 from entering the first intersection 7.1, and the second blocking member 10 prevents the transmission member 4 from entering the third intersection 8.2, so that the transmission member 4 can stably pass through the first intersection 7.1 and the fourth intersection 7.2 to enter the rear end of the second return section 6.2.

[0114] When the transmission member 4 drives the second blocking member 10 to rotate forward to above the fourth intersection 7.2 of the second switching guide groove 8, and the first blocking member 9 is still positioned at the first intersection 7.1 of the first switching guide groove 7, the first blocking member 9 prevents the transmission member 4 from entering the first intersection 7.1, and the second blocking member 10 prevents the transmission member 4 from entering the fourth intersection 7.2, so that the transmission member 4 can stably pass through the second intersection 8.1 and the third intersection 8.2 to enter the rear end of the first return section 5.2.

[0115] In addition, the first blocking member 9 and the second blocking member 10 are respectively connected with torsional springs, and after the first blocking member 9 and the second blocking member 10 are separated from the transmission member 4, the torsional springs drive the first blocking member 9 and the second blocking member 10 to reset to the initial position state.

[0116] The improved structure is stable and reliable in operation, and improves the use experience of users.

[0117] As an improvement of the utility model, the tool positioning mechanism is arranged above the movable element 1, and the tool positioning mechanism comprises two clamping jaws 12,

[0118] The two clamping jaws 12 are located at the two sides of the tool handle, and a clamping space is formed between the clamping inner sides and can clamp the tool handle,

[0119] The two clamping jaws 12 can rotate inward or outward to change the size of the clamping space, and after the improvement, the size of the clamping space can be flexibly changed to adapt to tool handles of different sizes.

[0120] As an improvement of the utility model, the tool positioning mechanism further comprises a slide block 11 that can move forward and backward, the slide block 11 is arranged below the two clamping jaws 12, a guide column 11.1 is arranged at the upper end of the slide block 11, a matching groove 12.2 is arranged on the inner side of the clamping jaw 12, and the matching groove 12.2 is used for the guide column 11.1 to pass in,

[0121] The slide block 11 moves forward and backward, the guide column 11.1 drives the clamping jaw 12 to rotate through the matching groove 12.2, the adjustment of the clamping space is realized, the slide block 11 moves forward to increase the clamping space, and the slide block 11 moves backward to reduce the clamping space.

[0122] The slider 11 is connected with an elastic member 13, which can be a spring, one end of the spring is abutted, and the other end is abutted with the front end of the slider 11, the elastic member 13 drives the slider 11 to always have a tendency of moving backward

[0123] As an improvement of the utility model, the tool positioning mechanism further comprises a retaining sleeve 22, the retaining sleeve 22 is provided with a retaining space, the retaining space is oppositely arranged with the clamping space, and the retaining space is located in front of the clamping space.

[0124] The retaining sleeve 22 is elastically deformed to change the size of the retaining space. The size of the retaining space can be changed according to the actual situation of the tool, and the tool is positioned and retained by the retaining space and the clamping space, thereby further enhancing the stability of the tool positioning and enabling the tool to stably contact the sharpening part 2, thereby improving the sharpening effect.

[0125] As shown in Figure 1 , Figure 2 The moving mechanism 3 comprises a lead screw 14 and a lead screw nut 15, one end of the lead screw 14 is drivingly connected with the output end of the motor, the lead screw nut 15 is sleeved on the lead screw 14, the lead screw nut 15 is provided with a mounting bracket 17, and the movable piece 1 is connected with the mounting bracket 17.

[0126] Preferably, the mounting bracket 17 is provided with a bearing, and the movable piece 1 is connected with the bearing in a matched mode, so that the rotation is smoother, and the device will not be stuck.

[0127] The motor drives the lead screw 14 to rotate, drives the lead screw nut 15 to move forward and backward, and drives the movable piece 1 to move, so that the transmission piece 4 can be stably guided in the corresponding guide groove.

[0128] As an improvement of the utility model, the sharpening part can also be a ceramic body, a precision steel rod or other components capable of grinding the blade part.

[0129] In the application, the sharpening part 2 adopts a sand belt, and the mounting bracket 17 is provided with a motor, and the output end of the motor extends to the inside of the movable piece 1.

[0130] The movable piece 1 is provided with a sand belt holder 19, the sand belt holder 19 is provided with two rotating wheels 19.1, and the sand belt is sleeved on the two rotating wheels 19.1.

[0131] One of the rotating wheels 19.1 is connected with the output end of the motor.

[0132] When the movable piece 1 rotates, the sand belt holder 19 rotates synchronously.

[0133] After the above improvement, the motor drives the sand belt to rotate, and the outer periphery of the sand belt contacts the blade part 21 to polish the blade part 21, which has the characteristics of high polishing efficiency and better effect.

[0134] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A sharpening mechanism, characterized by, The utility model relates to a kind of knife sharpening mechanisms comprising: A tool positioning mechanism for pre-positioning a tool; A movable element (1) rotatably arranged; A sharpening portion (2) arranged on the movable element (1); A movement mechanism (3) for moving the movable element (1); The movable element (1) is rotated to bring the sharpening portion (2) close to the blade portion (21) to have a position in contact with the blade portion (21), or to bring the sharpening portion (2) away from the blade portion (21) to have a position out of contact with the blade portion (21); In the state that the sharpening portion (2) is in contact with the blade portion (21), the movable element (1) moves along the extension direction of the blade portion (21) to sharpen the blade portion (21).

2. The knife sharpening mechanism according to claim 1, characterized in that: The knife sharpening mechanism further comprises a channel guide mechanism, the channel guide mechanism comprises a first guide channel (5) and a second guide channel (6), the first guide channel (5) and the second guide channel (6) are symmetrically arranged on both sides of the tool; The movable element (1) is further provided with a transmission element (4), and the transmission element (4) cooperates with the channel guide mechanism; When the transmission element (4) moves in the channel guide mechanism, the transmission element (4) drives the movable element (1) to rotate, so that the movable element (1) rotates to make the sharpening portion (2) have a position in contact with the blade portion (21) of the tool or a position out of contact with the blade portion (21) of the tool.

3. The knife sharpening mechanism according to claim 2, characterized in that: The first guide channel (5) is composed of a first forward segment (5.1) and a first return segment (5.2) extending forward and backward, and the rear end of the first return segment (5.2) is communicated with the rear end of the first forward segment (5.1); The center line of the first forward segment (5.1) and the center line B of the movable element (1) form an acute angle a, and the center line of the first return segment (5.2) and the center line B of the movable element (1) form an acute angle b, and the angle a is smaller than the angle b; When the transmission element (4) is located in the first return segment (5.2), the sharpening portion (2) is on the right side of the blade portion (21) of the tool and has a gap with the right side surface; when the transmission element (4) enters the first forward segment (5.1) from the first return segment (5.2), the movable element (1) rotates to make the sharpening portion (2) and the blade portion (21) of the tool have a smaller angle until the side surfaces of the two are in contact.

4. The knife sharpening mechanism according to claim 3, characterized in that: The channel guide mechanism is further provided with a second guide channel (6); The second guide channel (6) comprises a second forward segment (6.1) and a second return segment (6.2) extending forward and backward, and the rear end of the second return segment (6.2) is communicated with the rear end of the second forward segment (6.1); The center line of the second forward segment (6.1) and the center line B of the movable element (1) form an acute angle aa, and the center line of the second return segment (6.2) and the center line B of the movable element (1) form an acute angle bb, and the angle aa is smaller than the angle bb; When the transmission member (4) is in the second return section (6.2), the sharpening part (2) is located on the left side of the blade part (21) of the tool and has a gap with the right side surface; when the transmission member (4) enters the second forward section (6.1) from the second return section (6.2), the movable member (1) rotates, so that the angle between the sharpening part (2) and the blade part (21) of the tool is reduced to the side surface contact.

5. The knife sharpening mechanism according to claim 4, wherein: the front end of the first forward section (5.1) and the front end of the second return section (6.2) are communicated by the first switching guide groove (7), and the front end of the second forward section (6.1) and the front end of the first return section (5.2) are communicated by the second switching guide groove (8); the transmission member (4) travels from the first forward section (5.1) to the front end of the second return section (6.2), and the movable member (1) drives the sharpening part (2) to switch from the position state on the right side of the blade part (21) to the position state on the left side of the blade part (21).

6. A sharpening mechanism according to claim 5, wherein: the front end of the first return section (5.2) and the front end of the second return section (6.2) are respectively located at the front end of the first forward section (5.1) and the second forward section (6.1); the first switching guide groove (7) and the second switching guide groove (8) are arranged in an "X" intersection structure; a guide mechanism is arranged at the intersection, and the guide mechanism comprises a first blocking member (9) and a second blocking member (10); the first blocking member (9) is rotatably arranged above the first intersection (7.1) of the first switching guide groove (7), and when the transmission member (4) enters the first switching guide groove (7), the first blocking member (9) is blocked by the transmission member (4) to drive the first blocking member (9) to rotate forward to above the second intersection (8.1) of the second switching guide groove (8); the second blocking member (10) is rotatably arranged at the third intersection (8.2) of the second switching guide groove (8), and the transmission member (4) entering the second switching guide groove (8) can be blocked by the second blocking member (10) to drive the second blocking member (10) to rotate forward to the fourth intersection (7.2) of the first switching guide groove (7).

7. The knife sharpening mechanism according to claim 1, wherein: the tool positioning mechanism is arranged above the movable member (1), and the tool positioning mechanism comprises two clamping jaws (12), the two clamping jaws (12) are located on both sides of the tool handle, and a clamping space is formed between the clamping jaws (12) to clamp the tool handle, the two clamping jaws (12) can rotate inward or outward to change the size of the clamping space.

8. The knife sharpening mechanism according to claim 7, wherein: the tool positioning mechanism further comprises a slide block (11) that can move forward and backward, the slide block (11) is arranged below the two clamping jaws (12), the upper end of the slide block (11) is provided with a guide column (11.1), the inner side of the clamping jaw (12) is provided with a matching groove (12.2), and the guide column (11.1) is inserted into the matching groove (12.2). The slider (11) moves forward and backward, the guide column (11.1) drives the clamping jaw (12) to rotate through the matching groove (12.2), and adjustment of the clamping space is realized.

9. The knife sharpening mechanism of claim 7, wherein: The knife positioning mechanism further comprises a retaining sleeve (22) provided with a retaining space; The retaining space is opposite to and in front of the clamping space, and the retaining sleeve (22) can be elastically deformed to change the size of the retaining space.

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