阅读说明：本技术 一种园林用木桩削尖装置 (Gardens are with stake device of sharpening ) 是由 许权富 于 2021-08-12 设计创作，主要内容包括：本发明涉及一种削尖装置,尤其涉及一种园林用木桩削尖装置。技术问题：提供一种可以自动对木桩进行送料,且削尖速度快的园林用木桩削尖装置。一种园林用木桩削尖装置,包括有：底板,底板用于支撑整个装置；第一固定柱,第一固定柱设置在底板上部一侧；电机,电机设置在第一固定柱上；第二固定柱,第二固定柱对称式设置在底板上部靠近第一固定柱的一侧。本发明达到了可以自动对木桩进行送料,且削尖速度快的效果；本发明通过将木桩放置在下料框中,通过第一挡板和第二挡板反向移动,从而可以实现自动下料的效果。(The invention relates to a sharpening device, in particular to a wood pile sharpening device for gardens. The technical problem is as follows: the garden timber pile sharpening device can automatically feed timber piles and sharpen the timber piles quickly. A gardens are with stake sharpening device, including: the bottom plate is used for supporting the whole device; the first fixing column is arranged on one side of the upper part of the bottom plate; the motor is arranged on the first fixing column; the second fixing columns are symmetrically arranged on one side, close to the first fixing columns, of the upper portion of the bottom plate. The invention achieves the effects of automatically feeding the wood pile and high sharpening speed; according to the automatic blanking device, the wooden piles are placed in the blanking frame, and the first baffle and the second baffle move in opposite directions, so that the automatic blanking effect can be achieved.)

1. The utility model provides a gardens are with stake device of sharpeing which characterized in that, including:

the bottom plate (1), the bottom plate (1) is used for supporting the whole device;

the first fixing column (2), the first fixing column (2) is arranged on one side of the upper part of the bottom plate (1);

the motor (3), the motor (3) is set on the first fixed column (2);

the second fixing columns (4) are symmetrically arranged on one side, close to the first fixing column (2), of the upper part of the bottom plate (1);

the first driving wheel (6) is rotatably arranged on the second fixing column (4) close to one side of the first fixing column (2);

the belt (5), the belt (5) is set up between first drive wheel (6) and output shaft of the electrical machinery (3);

the second driving wheel (7), the second driving wheel (7) is slidably arranged on the second fixed column (4) on the other side;

the fixed frame (8), the fixed frame (8) is set on the second driving wheel (7);

the cutting knives (10), the cutting knives (10) are arranged in the fixing frame (8) in a sliding manner, and the number of the cutting knives (10) is four;

the first spring (9), the first spring (9) is set between the fixed frame (8) and the second fixed column (4), the first spring (9) is sleeved on the second driving wheel (7);

the material supporting mechanism (11), the material supporting mechanism (11) is arranged in the middle of the upper part of the bottom plate (1);

the pushing mechanism (12), the pushing mechanism (12) is arranged in the middle of the upper part of the bottom plate (1).

2. A gardens stake sharpening apparatus as defined in claim 1, wherein the material supporting means (11) comprises:

the first sliding rail (111) is arranged on one side, far away from the first fixing column (2), of the upper part of the bottom plate (1);

the fixing ring (112), the fixing ring (112) is arranged on the first sliding rail (111) in a sliding manner;

the turntable (113), the turntable (113) is slidably arranged at the inner side of the fixed ring (112), and the turntable (113) is slidably provided with a sliding rod;

the supporting plates (114) are arranged on the sliding rods, the three supporting plates (114) on the left side are connected with the sliding rods in a sliding mode, and the supporting plates (114) on the right side are fixedly connected with the sliding rods;

the limiting plate (115), the limiting plate (115) is arranged in the middle of the upper part of the bottom plate (1), and the limiting plate (115) is in contact fit with the supporting plate (114) on the right side;

a second spring (116), the second spring (116) being disposed between adjacent pallets (114).

3. A garden stake sharpening device according to claim 2, characterized in that the pushing means (12) comprise:

the third fixing columns (121), the third fixing columns (121) are arranged on the upper portion of the bottom plate (1), and the number of the third fixing columns (121) is four;

the screw rod (122) is rotatably arranged between the two third fixing columns (121) on one side, and the screw rod (122) is connected with an output shaft of the motor (3);

the nut (123), the nut (123) is set up on the feed screw (122) in the threaded manner, the nut (123) is connected with fixed ring (112);

the first sliding rod (124), the first sliding rod (124) is set between the two third fixed columns (121) on the other side;

the sliding block (125), the sliding block (125) is arranged on the first sliding rod (124) in a sliding mode, and the sliding block (125) is connected with the fixed ring (112).

4. A gardens stake sharpening device according to claim 3, characterized in that, still include tilting mechanism (13), tilting mechanism (13) includes:

the sliding material plates (131) are symmetrically arranged on one side, far away from the first fixing column (2), of the upper part of the bottom plate (1);

the first rotating shaft (132), the first rotating shaft (132) is rotatably arranged in the middle of the rotating disc (113);

the fourth fixing column (135) is arranged on the fixing ring (112);

the second rotating shaft (134), the second rotating shaft (134) is set on the fourth fixed column (135) in rotation;

a bevel gear set (133), the bevel gear set (133) being disposed between the second rotating shaft (134) and the first rotating shaft (132);

the first straight gear (136), the first straight gear (136) is set in the second spindle (134);

the first rack (137) is arranged on one side, close to the sliding plate (131), of the upper portion of the bottom plate (1), and the first straight gear (136) is matched with the first rack (137);

the second sliding rail (138), the second sliding rail (138) is arranged on one side of the upper portion of the bottom plate (1) close to the sliding plate (131), and the second rotating shaft (134) is connected with the second sliding rail (138) in a sliding mode.

5. A gardens are with stake sharpening device of claim 4, characterized by, still include unloading mechanism (14), unloading mechanism (14) including:

the blanking frame (141), the blanking frame (141) is arranged in the middle of the upper part of the bottom plate (1);

the first wedge-shaped block (142), the first wedge-shaped block (142) is symmetrically arranged on the upper part of the fixed ring (112);

the fifth fixing columns (145) are symmetrically arranged on the blanking frame (141), and the number of the fifth fixing columns (145) is four;

the connecting rods (146), the connecting rods (146) are all arranged on the fifth fixing column (145) in a sliding mode;

the first baffle (144), the first baffle (144) is set up between the connecting rod (146) of the ipsilateral;

the second wedge blocks (143), the second wedge blocks (143) are all arranged on the first baffle plate (144);

and the third spring (147), the third spring (147) is arranged between the connecting rod (146) and the fifth fixed column (145).

6. A gardens timber pile sharpening device according to claim 5, characterized by, further includes separation mechanism (15), separation mechanism (15) including:

the sixth fixing columns (151) are symmetrically arranged on the blanking frame (141), and the number of the sixth fixing columns (151) is four;

the third rotating shaft (152) is rotatably arranged between the sixth fixing columns (151) on the same side;

a second spur gear (153), the second spur gear (153) being provided on the third rotation shaft (152);

the second rack (154), the second rack (154) is set in the second wedge block (143), the second rack (154) is meshed with the second straight gear (153);

the sliding sleeve (156), the sliding sleeve (156) is symmetrically arranged on the blanking frame (141);

the second baffle plates (157), the second baffle plates (157) are all arranged on the sliding sleeve (156) in a sliding manner;

and the third rack (155) are arranged on the second baffle (157), and the third rack (155) is meshed with the second straight gear (153).

7. A garden stake sharpening device according to claim 6, further comprising an adjustment mechanism (16), the adjustment mechanism (16) comprising:

the fixing ring (112) is provided with four groups of third baffles (161), and two third baffles (161) form one group;

the second sliding rod (163), the second sliding rod (163) is set in fixed ring (112), the second sliding rod (163) is connected with cutter (10) in sliding mode;

and the fourth spring (162), the fourth spring (162) is arranged between the fixed ring (112) and the cutting knife (10), and the fourth spring (162) is sleeved on the second sliding rod (163).

8. A garden stake sharpening device according to claim 7, wherein the fourth spring (162) is a compression spring.

Technical Field

The invention relates to a sharpening device, in particular to a wood pile sharpening device for gardens.

Background

When people need to carry out the bearing to the building, generally can need to use the stake, pass to the ground through the stake with the bearing of building.

People are generally putting the timber pile on the workstation in the process of making the timber pile, and then in proper order with the timber pile on the workstation place in the position that is close to grinding tool, sharpen the timber pile into the timber pile through grinding tool. In the process of sharpening the wooden piles, the wooden piles need to be fed manually, and sharpening speed is low.

Therefore, the garden timber pile sharpening device which can automatically feed timber piles and is high in sharpening speed needs to be designed.

Disclosure of Invention

In order to overcome the manual wooden stake of manual work and sharpen the in-process, need manual work to pay-off to the wooden stake, and sharpen the slower shortcoming of speed, technical problem: the garden timber pile sharpening device can automatically feed timber piles and sharpen the timber piles quickly.

The purpose of the invention is realized by adopting the following technical scheme:

a gardens are with stake sharpening device, including: the bottom plate is used for supporting the whole device; the first fixing column is arranged on one side of the upper part of the bottom plate; the motor is arranged on the first fixing column; the second fixing columns are symmetrically arranged on one side, close to the first fixing columns, of the upper part of the bottom plate; the first driving wheel is rotatably arranged on the second fixing column close to one side of the first fixing column; the belt is arranged between the first transmission wheel and the output shaft of the motor; the second driving wheel is arranged on the second fixing column on the other side in a sliding manner; the fixing frame is arranged on the second transmission wheel; the cutting knives are arranged in the fixed frame in a sliding manner, and the number of the cutting knives is four; the first spring is arranged between the fixed frame and the second fixed column and sleeved on the second driving wheel; the material supporting mechanism is arranged in the middle of the upper part of the bottom plate; the pushing mechanism is arranged in the middle of the upper part of the bottom plate.

Wherein, hold in the palm material mechanism including: the first sliding rail is arranged on one side, far away from the first fixing column, of the upper part of the bottom plate; the fixing ring is arranged on the first sliding rail in a sliding manner; the rotary disc is arranged on the inner side of the fixing ring in a sliding manner, and a sliding rod is arranged on the rotary disc in a sliding manner; the supporting plates are arranged on the sliding rods, the three supporting plates on the left side are connected with the sliding rods in a sliding mode, and the supporting plates on the right side are fixedly connected with the sliding rods; the limiting plate is arranged in the middle of the upper part of the bottom plate and is in contact fit with the supporting plate on the right side; and the second spring is arranged between the adjacent supporting plates.

Wherein, pushing equipment is including: the third fixing columns are arranged on the upper portion of the bottom plate, and the number of the third fixing columns is four; the screw rod is rotatably arranged between the two third fixing columns on one side and is connected with an output shaft of the motor; the nut is arranged on the screw rod in a threaded mode and is connected with the fixing ring; the first sliding rod is arranged between the two third fixing columns on the other side; the slider, slider slidingtype setting are connected at first slide bar, slider and solid fixed ring.

Wherein, still including tilting mechanism, tilting mechanism including: the sliding plates are symmetrically arranged on one side, far away from the first fixing column, of the upper part of the bottom plate; the first rotating shaft is rotatably arranged in the middle of the rotating disc; the fourth fixing column is arranged on the fixing ring; the second rotating shaft is rotatably arranged on the fourth fixing column; the bevel gear set is arranged between the second rotating shaft and the first rotating shaft; the first straight gear is arranged on the second rotating shaft; the first rack is arranged on one side, close to the sliding material plate, of the upper part of the bottom plate, and the first straight gear is matched with the first rack; and the second sliding rail is arranged on one side of the upper part of the bottom plate, which is close to the sliding plate, and the second rotating shaft is connected with the second sliding rail in a sliding manner.

Wherein, still including unloading mechanism, unloading mechanism is including: the blanking frame is arranged in the middle of the upper part of the bottom plate; the first wedge-shaped blocks are symmetrically arranged on the upper part of the fixing ring; the fifth fixing columns are symmetrically arranged on the blanking frame, and the number of the fifth fixing columns is four; the connecting rods are all arranged on the fifth fixing column in a sliding mode; the first baffle is arranged between the connecting rods on the same side; the second wedge-shaped blocks are arranged on the first baffle; and the third spring is arranged between the connecting rod and the fifth fixing column.

Wherein, still including separation mechanism, separation mechanism is including: the sixth fixing columns are symmetrically arranged on the blanking frame, and the number of the sixth fixing columns is four; the third rotating shaft is rotatably arranged between the sixth fixing columns on the same side; the second straight gear is arranged on the third rotating shaft; the second rack is arranged on the second wedge-shaped block and meshed with the second straight gear; the sliding sleeves are symmetrically arranged on the blanking frame; the second baffle plates are arranged on the sliding sleeve in a sliding manner; and the third racks are arranged on the second baffle and are meshed with the second straight gear.

Wherein, still including adjustment mechanism, adjustment mechanism is including: the fixing ring is provided with four groups of third baffles, and two third baffles form a group; the second sliding rod is arranged on the fixing ring and is connected with the cutting knife in a sliding manner; and the fourth spring is arranged between the fixing ring and the cutting knife, and the fourth spring is sleeved on the second sliding rod.

Wherein, the fourth spring is a compression spring.

The invention has the beneficial effects that: 1. the invention achieves the effects of automatically feeding the wood pile and high sharpening speed;

2. according to the automatic blanking device, the wooden piles are placed in the blanking frame, and the first baffle and the second baffle move in opposite directions, so that the automatic blanking effect can be realized;

3. according to the invention, the screw rod rotates to drive the nut and the fixing ring to move left and right, so that the timber pile can be driven to move to a position close to the cutting knife, and the cutting knife can rapidly sharpen the timber pile.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the material supporting mechanism of the present invention.

Fig. 3 is a schematic perspective view of the pushing mechanism of the present invention.

Fig. 4 is a schematic perspective view of the turnover mechanism of the present invention.

Fig. 5 is a schematic perspective view of the blanking mechanism of the present invention.

Fig. 6 is an enlarged schematic perspective view of part a of the present invention.

Fig. 7 is a schematic perspective view of the blocking mechanism of the present invention.

Fig. 8 is a schematic perspective view of an adjusting mechanism according to the present invention.

Description of reference numerals: 1: bottom plate, 2: first fixing column, 3: motor, 4: second fixing column, 5: a belt, 6: first drive wheel, 7: second drive wheel, 8: fixed frame, 9: first spring, 10: cutting knife, 11: material supporting mechanism, 111: first slide rail, 112: fixing ring, 113: turntable, 114: pallet, 115: a limiting plate, 116: second spring, 12: pushing equipment, 121: third fixing column, 122: screw rod, 123: nut, 124: first slide bar, 125: slider, 13: turnover mechanism, 131: sliding plate, 132: first rotating shaft, 133: bevel gear set, 134: second rotating shaft, 135: fourth fixing column, 136: first straight gear, 137: first rack, 138: second slide rail, 14: unloading mechanism, 141: blanking frame, 142: first wedge block, 143: second wedge block, 144: first baffle, 145: fifth fixing column, 146: link, 147: third spring, 15: blocking mechanism, 151: sixth fixing column, 152: third rotating shaft, 153: second spur gear, 154: second rack, 155: third rack, 156: sliding sleeve, 157: second baffle, 16: adjustment mechanism, 161: third baffle, 162: fourth spring, 163: a second slide bar.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings.

Example 1

A garden timber pile sharpening device is shown in figure 1 and comprises a bottom plate 1, a first fixed column 2, a motor 3, a second fixed column 4, a belt 5, a first driving wheel 6, a second driving wheel 7, a fixed frame 8, a first spring 9, cutting knives 10, a material supporting mechanism 11 and a material pushing mechanism 12, wherein the first fixed column 2 is arranged on the right rear side of the upper portion of the bottom plate 1, the motor 3 is arranged on the first fixed column 2, the second fixed column 4 is symmetrically arranged on the right side of the upper portion of the bottom plate 1 in a bilateral mode, the first driving wheel 6 is rotatably arranged on the second fixed column 4 on the right side, the belt 5 is wound between the first driving wheel 6 and an output shaft of the motor 3, the second driving wheel 7 is slidably arranged on the second fixed column 4 on the left side, the fixed frame 8 is arranged on the second driving wheel 7, four cutting knives 10 are slidably arranged in the fixed frame 8, and the first spring 9 is connected between the fixed frame 8 and the second fixed column 4, the first spring 9 is sleeved on the second driving wheel 7, the middle of the upper part of the bottom plate 1 is provided with a material supporting mechanism 11, and the middle of the upper part of the bottom plate 1 is provided with a material pushing mechanism 12.

When a user needs to sharpen a timber pile in a garden, the equipment can be used, firstly, the timber pile to be sharpened is placed above the material supporting mechanism 11, then the motor 3 is started, the motor 3 drives the material supporting mechanism 11 to move towards the right side through the material pushing mechanism 12, so that the timber pile is clamped at a position between the cutting knives 10, and the timber pile pushes the fixed frame 8 and the second transmission wheel 7, so that the second transmission wheel 7 is contacted with the first transmission wheel 6, at the moment, the first spring 9 is compressed, meanwhile, the output shaft of the motor 3 rotates to drive the first transmission wheel 6 to rotate through the belt 5, and further drives the second transmission wheel 7, the fixed frame 8 and the cutting knife 10 to rotate, so that the cutting knife 10 can sharpen the timber pile, after sharpening is finished, the motor 3 is started to rotate backwards, the motor 3 drives the material supporting mechanism 11 to reset through the material pushing mechanism 12, and then the timber pile is taken down from the material supporting mechanism 11, under the reset action of the first spring 9, the second transmission wheel 7 is not contacted with the first transmission wheel 6, the cutting knife 10 stops rotating, and when a user does not need to sharpen the wooden pile, the motor 3 is turned off.

Example 2

On the basis of embodiment 1, as shown in fig. 2 to 3, the material supporting mechanism 11 includes a first slide rail 111, a fixing ring 112, a turntable 113, supporting plates 114, a limiting plate 115, and a second spring 116, the first slide rail 111 is disposed on the left side of the upper portion of the bottom plate 1, the fixing ring 112 is slidably disposed on the first slide rail 111, the turntable 113 is slidably disposed on the inner side of the fixing ring 112, a slide rod is slidably disposed on the turntable 113, four supporting plates 114 are disposed on the slide rod, three supporting plates 114 on the left side are slidably connected to the slide rod, the supporting plates 114 on the right side are fixedly connected to the slide rod, the second spring 116 is connected between adjacent supporting plates 114, the second springs 116 are all sleeved on the slide rod, the limiting plate 115 is disposed in the middle of the upper portion of the bottom plate 1, and the limiting plate 115 is in contact with the supporting plates 114 on the right side.

The user can place the stake that needs sharpen on layer board 114, pushing equipment 12 drives solid fixed ring 112 and carousel 113 and moves right afterwards, because limiting plate 115 can support layer board 114 on the rightmost side, so make carousel 113 can drive left three layer board 114 and stake and move to the right side along the slide bar, second spring 116 is compressed this moment, after the stake is sharped and is accomplished, pushing equipment 12 drives solid fixed ring 112 and resets, and then make second spring 116 reset, make layer board 114 and carousel 113 move to the left side and reset, people just can take off the stake afterwards.

The pushing mechanism 12 includes third fixing columns 121, a screw rod 122, a nut 123, a first sliding rod 124 and a sliding block 125, four third fixing columns 121 are arranged on the upper portion of the bottom plate 1, the screw rod 122 is rotatably arranged between the two third fixing columns 121 on the rear side, the screw rod 122 is connected with an output shaft of the motor 3, the nut 123 is arranged on the screw rod 122 in a threaded manner, the nut 123 is connected with the fixing ring 112, the first sliding rod 124 is connected between the two third fixing columns 121 on the front side, the sliding block 125 is connected on the first sliding rod 124 in a sliding manner, and the sliding block 125 is connected with the fixing ring 112.

Motor 3 drives lead screw 122 and rotates, and then makes nut 123 drive solid fixed ring 112, slider 125 and move to the right side, and after the stake was sharpened and is accomplished, the user can start motor 3 and reverse, makes nut 123 drive solid fixed ring 112, slider 125 reverse movement, so need not artifical manual promotion solid fixed ring 112.

Example 3

On the basis of the embodiment 2, as shown in fig. 4-8, the turnover mechanism 13 is further included, the turnover mechanism 13 includes a material sliding plate 131, a first rotating shaft 132, a bevel gear set 133, a second rotating shaft 134, the upper portion of the bottom plate 1 is provided with a sliding plate 131 in a front-back symmetrical manner, the middle of the rotating plate 113 is rotatably provided with a first rotating shaft 132, the fixing ring 112 is provided with a fourth fixing column 135, the fourth fixing column 135 is rotatably provided with a second rotating shaft 134, a bevel gear set 133 is connected between the second rotating shaft 134 and the first rotating shaft 132, the second rotating shaft 134 is provided with a first straight gear 136, the upper portion of the bottom plate 1 is provided with a second sliding rail 138 in a left front side, the second rotating shaft 134 is slidably connected with the second sliding rail 138, the upper portion of the bottom plate 1 is provided with a first rack 137 in a left front side, and the first straight gear 136 is matched with the first rack 137.

After the wood pile is sharpened, the user can move the fixing ring 112 and the upper components thereof to the left, when the first straight gear 136 is meshed with the first rack 137, the second rotating shaft 134 rotates, the bevel gear set 133 drives the first rotating shaft 132, the rotating disc 113, the sliding rod and the supporting plate 114 to rotate for a half circle, at this time, the sharpened wood pile can fall downwards above the sliding plate 131, and the user can collect the sharpened wood pile on the sliding plate 131.

Still including unloading mechanism 14, unloading mechanism 14 is including unloading frame 141, first wedge 142, second wedge 143, first baffle 144, fifth fixed column 145, connecting rod 146 and third spring 147, be equipped with unloading frame 141 in the middle of bottom plate 1 upper portion, gu fixed ring 112 upper portion front and back symmetry formula is equipped with first wedge 142, the equal symmetry in both sides is equipped with two fifth fixed columns 145 around on unloading frame 141, it all is equipped with connecting rod 146 all to slide on the fifth fixed column 145, be connected with third spring 147 between connecting rod 146 and the fifth fixed column 145, be connected with first baffle 144 between the connecting rod 146 of homonymy, all be equipped with second wedge 143 on first baffle 144.

The user can place the stake that needs the sharpening in unloading frame 141, solid fixed ring 112 drives first wedge 142 and moves to the right side, promote second wedge 143 to the outside through first wedge 142, third spring 147 is compressed, the bottom of unloading frame 141 can not be kept off to the first baffle 144 of both sides this moment, the stake in unloading frame 141 begins the unloading, when first wedge 142 does not contact with second wedge 143, under the reset action of third spring 147, first baffle 144 moves to the inside respectively, make the stake no longer the unloading.

The blanking device is characterized by further comprising a blocking mechanism 15, wherein the blocking mechanism 15 comprises sixth fixing columns 151, a third rotating shaft 152, a second straight gear 153, a second rack 154, a third rack 155, a sliding sleeve 156 and a second baffle 157, the blanking frame 141 is symmetrically provided with the two sixth fixing columns 151 in the front-back mode, the third rotating shaft 152 is rotatably arranged between the sixth fixing columns 151 on the same side, the third rotating shaft 152 is provided with the second straight gear 153, a second wedge-shaped block 143 is provided with the second rack 154, the second rack 154 is meshed with the second straight gear 153, the blanking frame 141 is symmetrically provided with the sliding sleeve 156 in the front-back mode, the sliding sleeve 156 is provided with the second baffle 157 in a sliding mode, the second baffle 157 is provided with the third rack 155, and the third rack 155 is meshed with the second straight gear 153.

When the second wedge-shaped block 143 moves to the outside respectively, drive the second rack 154 to move to the outside, mesh with second spur gear 153 through second rack 154, make second spur gear 153 and third pivot 152 rotate, mesh with second spur gear 153 through third rack 155, make third rack 155 drive second baffle 157 incasement side and move, so, second baffle 157 can block the stake of upside, make it can not drop downwards, when first baffle 144 moves to the inside respectively, second baffle 157 moves to the outside respectively this moment, the stake on the second baffle 157 can drop downwards on first baffle 144, so, can realize the effect of unloading in proper order.

The cutting device is characterized by further comprising an adjusting mechanism 16, wherein the adjusting mechanism 16 comprises a third baffle 161, a fourth spring 162 and a second sliding rod 163, four groups of third baffles 161 are arranged on the fixing ring 112, two third baffles 161 form a group, four second sliding rods 163 are arranged on the fixing ring 112, the second sliding rods 163 are connected with the cutting knife 10 in a sliding manner, the fourth spring 162 is connected between the fixing ring 112 and the cutting knife 10, and the fourth spring 162 is sleeved on the second sliding rods 163.

If the stake that needs to sharpen is thick, the cutting knife 10 moves along the outside of the second slide bar 163, the fourth spring 162 is compressed, when the stake is taken out, it is no longer located at the position between the cutting knives 10, and under the reset action of the fourth spring 162, the cutting knife 10 moves to the inside to reset.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.