阅读说明：本技术 一种手工皮革专用的皮革裁剪刀 (Dedicated leather of manual leather tailors sword ) 是由 黄欢 于 2021-02-28 设计创作，主要内容包括：本发明涉及皮革裁剪刀技术领域,且公开了一种手工皮革专用的皮革裁剪刀,包括连接支架,所述连接支架的上表面设置有手持握把,连接支架的前后两侧表面分别设置有两个移动轮,移动轮上设置有调整机构,手持握把的左侧表面固定连接有连接块,连接块的前端设置有对接块,连接块的左端设置有裁剪刀片,裁剪刀片的右端设置有榫卯机构,所述对接块的后侧表面设置有快速锁紧机构。该手工皮革专用的皮革裁剪刀,保障了工作人员在通过裁剪刀片对皮革裁剪时的稳定性,避免了裁剪刀片晃动的情况,提高了对皮革的裁剪效果,同时通过该方式避免了裁剪刀片对工作人员造成伤害的情况,提高了工作人员裁剪时的安全性。(The invention relates to the technical field of leather cutting knives, and discloses a special leather cutting knife for manual leather, which comprises a connecting support, wherein a handheld handle is arranged on the upper surface of the connecting support, two movable wheels are respectively arranged on the front side surface and the rear side surface of the connecting support, an adjusting mechanism is arranged on each movable wheel, a connecting block is fixedly connected to the left side surface of each handheld handle, a butt-joint block is arranged at the front end of each connecting block, a cutting blade is arranged at the left end of each connecting block, a mortise and tenon joint mechanism is arranged at the right end of each cutting blade, and a quick locking mechanism is arranged on the rear side surface of each butt-. This dedicated leather of manual leather cutter has ensured the staff and has cut out the stability when the blade is tailor to the leather through cutting out, has avoided cutting out the condition that the blade rocked, has improved the effect of tailorring to the leather, has avoided cutting out the condition that the blade caused the injury to the staff through this mode simultaneously, has improved the security when the staff tailors.)

1. The utility model provides a sword is tailor to dedicated leather of manual leather, includes linking bridge (1), its characterized in that: the upper surface of the connecting support (1) is provided with a handheld handle (2), the connecting support (1) is in a U-shaped structure, a rotating shaft (6) is fixedly connected in a groove of the connecting support (1), a connecting rotating block (4) is fixedly connected to the lower surface of the handheld handle (2), a rotating groove (5) is formed in the connecting rotating block (4), the connecting rotating block (4) is rotatably connected to the rotating shaft (6) through the rotating groove (5), the front side surface and the rear side surface of the connecting support (1) are respectively provided with two movable wheels (3), the connecting structures on the two movable wheels (3) are the same and are arranged in a mirror image mode, an adjusting mechanism is arranged on the movable wheels (3), the left side surface of the handheld handle (2) is fixedly connected with a connecting block (7), the connecting block (7) is arranged in a structure combining a transverse plate and a vertical plate, the front end of the connecting block (7) is provided, the left end of connecting block (7) is provided with cuts out blade (8), and the right-hand member of cutting out blade (8) is provided with tenon fourth of twelve earthly branches mechanism, the rear side surface of butt joint piece (9) is provided with quick locking mechanism.

2. The leather cutting knife special for hand-made leather according to claim 1, characterized in that: the upper surface of handheld handle (2) has been seted up the forefinger and has been pushed away groove (10), and forefinger pushes away groove (10) and sets up to the inclined plane recess, and both sides surface is provided with two finger friction blocks (11) respectively around handheld handle (2), and the right-hand member structure of handheld handle (2) sets up to wave arc inclined plane form.

3. The leather cutting knife special for hand-made leather according to claim 1, characterized in that: the structure of cutting blade (8) sets up to collude form beak form, cuts colluding form department and outside cambered surface department of blade (8) and all sets up to the cutting edge, cuts the material of blade (8) and makes for high-quality high-carbon steel.

4. The leather cutting knife special for hand-made leather according to claim 1, characterized in that: the adjusting mechanism comprises a rotating block (301), the front end of the rotating block (301) is arranged on the rear side surface of the moving wheel (3), the rear end of the rotating block (301) is rotatably connected with a rotating plate (303), the lower surface of the connecting bracket (1) is also fixedly connected with two rotating blocks (301) respectively, one end, far away from the moving wheel (3), of the rotating plate (303) is rotatably connected to the rotating block (301) on the lower surface of the connecting bracket (1), two movable grooves (306) are respectively formed in the connecting bracket (1), the upper surface of the rotating plate (303) is fixedly connected with a push rod (304), the upper end of the push rod (304) finally penetrates into the inner part of the movable groove (306) through the lower surface of the connecting bracket (1), the push rod (304) is slidably connected with the connecting bracket (1), the upper end of the push rod (304) is fixedly connected with a movable block (305), and the upper surface of the movable block (305) is fixedly connected, the upper end of the spring (307) is fixedly connected to the inner wall of the top of the movable groove (306).

5. The leather cutting knife special for hand-made leather according to claim 4, characterized in that: the outer surfaces of the two moving wheels (3) are provided with friction patterns (302), and the friction patterns (302) are arranged into oblique Z-shaped grooves which are sequentially and respectively arranged on the outer surfaces of the moving wheels (3) in a mirror image mode by using the center lines of the moving wheels (3).

6. The leather cutting knife special for hand-made leather according to claim 1, characterized in that: the mortise and tenon joint mechanism comprises a blade connecting block (801), the left end of the blade connecting block (801) is fixedly connected to the right end of a cutting blade (8), the right end of the blade connecting block (801) is overlapped with a gap between the connecting block (7) and a butt joint block (9), the right side surface of the blade connecting block (801) is fixedly connected with two tenon blocks (803) respectively, the left side surface of a vertical plate of the connecting block (7) is provided with two mortises (805) respectively, the two mortises (805) extend out of the front side surface of the vertical plate of the connecting block (7), the tenon blocks (803) are spliced with the mortises (805), the rear side surface of the butt joint block (9) is fixedly connected with three locking rods (802) respectively, the blade connecting block (801) is provided with three locking grooves (804) respectively, the three locking grooves (804) extend out of the front side surface and the rear side surface of the blade connecting block (801), the front side surface of the, the rear end of the locking rod (802) penetrates through a locking groove (804) on the blade connecting block (801), and the rear end of the locking rod (802) is clamped with the locking groove (804) on the connecting block (7).

7. The leather cutting knife special for hand-made leather according to claim 6, characterized in that: the structure of the tenon block (803) is a rectangular and isosceles triangle combined shape, and the mortise (805) is a rectangular and isosceles triangle combined groove.

8. The leather cutting knife special for hand-made leather according to claim 1, characterized in that: the quick locking mechanism comprises a butt joint rod (901), the front end of the butt joint rod (901) is fixedly connected to the rear side surface of a butt joint block (9), the butt joint rod (901) is positioned on the right side of a locking rod (802), the front side surface of a vertical plate of a connecting block (7) is provided with a butt joint groove (902), the rear end of the butt joint rod (901) extends into the butt joint groove (902), the vertical plate of the connecting block (7) is respectively provided with two built-in grooves (903), the two built-in grooves (903) are respectively communicated with the upper side and the lower side of the butt joint groove (902), two second locking blocks (904) are respectively arranged in the two built-in grooves (903), the connecting structures on the two second locking blocks (904) are the same and are arranged in a mirror image mode, the upper ends of the second locking blocks (904) extend into the butt joint groove (903), the upper surface of the second locking blocks (904) is provided with a clamping groove (909), the butt joint rod (901) is arranged into a, the clamping groove (909) is a half truncated cone-shaped groove, and the two second locking blocks (904) are clamped with the cylinder of the butt joint rod (901) through the clamping groove (909).

9. The leather cutting knife special for hand-made leather according to claim 8, characterized in that: the lower fixed surface of second latch segment (904) is connected with butt joint push rod (905), and the lower extreme of butt joint push rod (905) runs through the lower surface of connecting block (7), and butt joint push rod (905) is located one of outer fixedly connected with of connecting block (7) and draws the piece, and the lower fixed surface of second latch segment (904) is connected with butt joint spring (906), and the lower extreme fixed connection of butt joint spring (906) is on the bottom inner wall of built-in groove (903), and butt joint spring (906) activity cup joints on the surface of butt joint push rod (905).

10. The leather cutting knife special for hand-made leather according to claim 8, characterized in that: two butt joint sliding grooves (907) are respectively formed in the front side surface and the rear side surface of the built-in groove (903), two butt joint pulleys (908) are respectively arranged on the front side surface and the rear side surface of the second locking block (904) located at one end of the built-in groove (903), and the second locking block (904) is connected with the butt joint sliding grooves (907) in a sliding mode through the butt joint pulleys (908).

Technical Field

The invention relates to the technical field of leather cutting knives, in particular to a leather cutting knife special for hand-made leather.

Background

Leather is applied to all corners of life, the mode of generally cutting the leather is a mode of mechanically cutting and manually cutting, the mechanical cutting is suitable for producing a large number of leather products, the mode of mechanical cutting is always streamline, the leather to be cut is common, the leather to be cut is generally required to be manually cut when the leather is perfectly cut, the leather to be cut is cut by a leather cutter which is a special cutter for cutting the leather at present, most of the existing leather cutters comprise a cutter blade and a handle, the leather cutter is used by holding the handle by hand and cutting the leather by the cutter blade, the material of the general leather has hard property, and a worker can cut the leather by the cutter blade only by using the leather cutter with great effort, when some non-professional personnel use the leather sword to tailor the leather, because non-professional personnel do not have the experience through special training and long-time work accumulation, and then hold the condition that the handle of a knife end can appear rocking under the not enough condition of strength when using the leather cut-off knife, and then the risk of leather is damaged in the process of tailorring the leather increase of gathering, the in-process of tailorring the leather simultaneously, the user need be pressed down the leather through another hand, and then the condition that the leather cut-off knife cut the hand appears easily, staff's personal safety has been influenced.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the leather cutting knife special for the hand-made leather, which has the advantages of more stability and the like when the leather cutting knife cuts the leather, and solves the problem that the leather cutting knife is easy to shake when cutting the leather.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a leather cutting knife special for manual leather comprises a connecting support, wherein a handheld handle is arranged on the upper surface of the connecting support, the connecting support is U-shaped in structure, a rotating shaft is fixedly connected in a groove of the connecting support, a connecting rotating block is fixedly connected to the lower surface of the handheld handle, a rotating groove is formed in the connecting rotating block, the connecting rotating block is rotatably connected to the rotating shaft through the rotating groove, two moving wheels are respectively arranged on the front side surface and the rear side surface of the connecting support, the connecting structures on the two moving wheels are the same and are arranged in a mirror image mode, an adjusting mechanism is arranged on each moving wheel, a connecting block is fixedly connected to the left side surface of the handheld handle, the connecting block is arranged in a structure combining a transverse plate and a vertical plate, a butt-joint block is arranged at the front end of the connecting block, a cutting blade is arranged at the left, and the rear side surface of the butt joint block is provided with a quick locking mechanism.

Preferably, the upper surface of the handheld handle is provided with a forefinger push groove which is an inclined groove, the front side surface and the rear side surface of the handheld handle are respectively provided with two finger friction blocks, and the right end structure of the handheld handle is in a wave arc inclined plane shape.

Preferably, the structure of cutting the blade sets up to colluding form beak form, cuts the colluding form department and the outside cambered surface department of blade and all sets up to the cutting edge, and the material of cutting the blade is made for high-quality high-carbon steel.

Preferably, guiding mechanism includes the turning block, the front end setting of turning block is on the rear side surface that removes the wheel, the rear end of turning block is rotated and is connected with the rotor plate, two turning blocks of fixedly connected with are equally distinguished to linking bridge's lower surface, the one end that the wheel was kept away from to the rotor plate is rotated and is connected on the turning block of linking bridge lower surface, two movable slots have been seted up respectively in the linking bridge, the last fixed surface of rotor plate is connected with the push rod, the lower surface of linking bridge is passed through and finally runs through into the inside in movable slot in the upper end of push rod, push rod and linking bridge sliding connection, the upper end fixedly connected with movable block of push rod, the last fixed surface of movable block is connected with the spring, the upper end fixed connection of spring is.

Preferably, the outer surfaces of the two moving wheels are provided with friction patterns, and the friction patterns are arranged in oblique Z-shaped grooves which are sequentially and respectively arranged on the outer surfaces of the moving wheels in a mirror image mode by using the central lines of the moving wheels.

Preferably, mortise and tenon joint mechanism includes the blade connecting block, the left end fixed connection of blade connecting block is on the right-hand member of cutting out the blade, the right-hand member of blade connecting block and the space coincidence between the butt joint piece, two tenons of fixedly connected with are distinguished to the right side surface of blade connecting block, two mortises have been seted up respectively to the left side surface of connecting block riser, the preceding side surface of connecting block riser is all extended to two mortises, the tenon is spliced with the mortise, the back side surface of butt joint piece is three check lock lever of fixedly connected with respectively, three locking groove has been seted up respectively on the blade connecting block, three locking groove all extends the front and back both sides surface of blade connecting block, the preceding side surface of connecting block diaphragm has been seted up respectively equally and is three locking groove, the rear end of check lock lever runs through out the locking groove on the.

Preferably, the tenon block is in a rectangular and isosceles triangle combined shape, and the mortise is a rectangular and isosceles triangle combined groove.

Preferably, quick locking mechanism includes the butt joint pole, the front end fixed connection of butt joint pole is in the rear side surface of butt joint piece, the butt joint pole is located the right side of check lock lever, the butt joint groove has been seted up to the front side surface of connecting block riser, the rear end of butt joint pole extends into the butt joint inslot, two built-in grooves have been seted up in the connecting block riser respectively, two built-in grooves communicate with each other with the upper and lower both sides in butt joint groove respectively, be provided with two second check lock blocks in two built-in grooves respectively, connection structure on two second check lock blocks is the same and is the setting of mirror image, the upper end of second check lock block extends into the butt joint inslot through built-in groove, the joint groove has been seted up to the upper surface of second check lock block, the butt joint pole sets up to cylinder and round platform form integrated configuration, the joint groove sets up to half round platform form.

Preferably, the lower fixed surface of the second locking block is connected with a butt joint push rod, the lower end of the butt joint push rod penetrates through the lower surface of the connecting block, one end of the butt joint push rod, which is located outside the connecting block, is fixedly connected with a pull block, the lower fixed surface of the second locking block is connected with a butt joint spring, the lower end of the butt joint spring is fixedly connected to the inner wall of the bottom of the built-in groove, and the butt joint spring is movably sleeved on the outer surface of the butt joint push rod.

Preferably, the front side surface and the rear side surface of the built-in groove are respectively provided with two butt-joint sliding grooves, the front side surface and the rear side surface of the second locking block at one end of the built-in groove are respectively provided with two butt-joint pulleys, and the second locking block is in sliding connection with the butt-joint sliding grooves through the butt-joint pulleys.

(III) advantageous effects

Compared with the prior art, the invention provides the special leather cutting knife for the hand-made leather, which has the following beneficial effects:

1. the leather cutting knife special for the manual leather is characterized in that the device is placed on the leather to be cut, a hand of a worker holds the hand-held handle, the hand-held handle rotates anticlockwise, hook shapes of the cutting blades are in leather contact, the leather can be cut, two moving wheels are arranged on the front side and the rear side of the connecting support respectively, the worker can push the device to move on the leather, the linear or arc cutting on the leather is completed, the connecting support can support the hand of the worker, the effect of the worker when the cutting blades are used for cutting the leather is improved, the cutting blades are cut into an inclined shape, a right-angled triangle shape is formed between the cutting blades and the connecting support, the stability of the worker when the leather is cut through the cutting blades is guaranteed, and the situation that the cutting blades shake is avoided, the leather cutting effect is improved, the condition that the cutting blade damages workers is avoided through the mode, and safety of the workers during cutting is improved.

2. This dedicated leather of manual leather cutter, the device are through being provided with guiding mechanism on removing the wheel, and then remove the wheel and can adjust according to the height of contact surface, and then have ensured that the upper surface of linking bridge is in same horizontal plane all the time, have improved the stability of cutting out the blade when tailorring the leather, and then have ensured the effect of tailorring of blade to the leather.

3. This sword is tailor to dedicated leather of manual leather, the device is through being provided with tenon fourth of twelve earthly branches mechanism, and then the completion will be tailor the blade concatenation on the connecting block, and then can demolish and install cutting the blade, the maintenance of polishing can be carried out cutting the blade like this, and then the life of tailorring the blade has been improved, the structure through with the tenon piece is rectangle and isosceles triangle combination form simultaneously, and then the intensity of being connected between blade connecting block and the connecting block has been increased, the stability of tie point between the two has also been increased simultaneously, and then the condition that becomes flexible appears between blade connecting block and the connecting block when tailorring the leather has been avoided tailorring the blade, and then the result of use of tailorring the blade has.

4. This sword is tailor to dedicated leather of manual leather is provided with quick locking mechanism in the device, and then the butt joint piece when splicing with the connecting block, through quick locking mechanism and then accomplish will tailor on the blade fixed connection piece, and then reduced the staff at the fixed work dynamics of tailorring the blade, improved staff's work efficiency for the staff with trade the speed when tailorring the blade.

5. The leather cutting knife special for the manual leather has the advantages that the right end structure of the hand-held grip is set to be in the shape of a wavy arc inclined plane, the right end of the hand-held grip is held at the palm of a worker, the contact surface between the palm of the worker and the hand-held grip is increased, the smoothness of the contact surface between the palm and the hand-held grip is increased, the comfort level of the worker for holding the hand-held grip by the palm is further guaranteed, the index finger end of the worker is placed in the index finger push groove, the inclined plane groove is formed in the index finger push groove, the index finger of the worker is placed in the most comfortable state, the thumb of the index finger push groove is placed on the finger friction block on the front side of the hand-held grip, the other three fingers are placed on the finger friction block on the rear side of the hand-held grip, the friction force between the worker and the hand-held grip is increased, and the sliding condition between the fingers of the, the operation of staff has been influenced, and then when the staff carries out the counter clockwise rotation to handheld handle and uses, through the more artifical mechanics that accords with of this kind of form, reduced the tired degree of staff when holding handheld handle for a long time, ensured the comfort level of staff when holding handheld handle for a long time.

6. This special leather of manual leather is tailor sword sets up to the central line that a plurality of slant "Z" style of calligraphy recess is the mirror image through will rub the decorative pattern and sets up respectively in proper order on the surface of removal wheel, and then increased the frictional force when removing wheel and desktop or leather surface contact, and then avoided the device when using the automatic condition of driving wheel appearance, ensured the stability of the device when using.

7. This sword is tailor to dedicated leather of manual leather, structure through will tailorring the blade sets up to colluding form beak form, the collude form department of tailorring the blade simultaneously all sets up to the cutting edge with outside cambered surface department, when needs carry out the straight line on the leather and tailor, will tailor the blade and rotate to outside cambered surface and leather contact, and then increased the area of contact between cutting edge and the leather, and then ensured the stability when tailorring the straight line on the leather, when needs carry out the cambered surface on the leather and tailor, through carrying out clockwise rotation to handheld handle, and then the collude form department and the leather contact of tailorring the blade, and then fine flexibility and easy operation have when tailorring the leather, and then ensured the effect when tailorring the leather pitch arc.

8. This special leather of manual leather is tailor sword sets up to cylinder and round platform form integrated configuration through will docking the pole to and the joint groove sets up to half round platform form recess, and then has improved the smooth degree of contact surface between the two, and then has reduced the frictional force between docking pole and the second latch segment, and then has avoided the dead condition of mechanical card, has ensured the stability when the device uses.

9. This sword is tailor to dedicated leather of manual leather, second latch segment pass through butt joint pulley and butt joint spout sliding connection, and then has improved the stability of second latch segment when built-in inslot displacement, has reduced the frictional force between second latch segment and the built-in groove, and then has improved the smoothness nature of second latch segment.

Drawings

FIG. 1 is a schematic structural view of a leather cutting knife specially used for hand-made leather according to the present invention;

FIG. 2 is a schematic view of a splitting structure of a leather cutting knife special for hand leather according to the present invention;

FIG. 3 is a right plan view of the adjustment mechanism of the present invention;

FIG. 4 is a schematic view of a disassembled structure of the mortise and tenon structure of the present invention;

FIG. 5 is a right plan view of the quick lock mechanism of the present invention;

fig. 6 is a schematic structural view of a second locking block of the present invention.

In the figure: 1 connecting bracket, 2 hand-held grips, 3 moving wheels, 301 rotating blocks, 302 friction patterns, 303 rotating plates, 304 push rods, 305 moving blocks, 306 moving grooves, 307 springs, 4 connecting rotating blocks, 5 rotating grooves, 6 rotating shafts, 7 connecting blocks, 8 cutting blades, 801 blade connecting blocks, 802 locking rods, 803 tenon blocks, 804 locking grooves, 805 mortises, 9 butting blocks, 901 butting rods, 902 butting grooves, 903 built-in grooves, 904 second locking blocks, 905 butting push rods, 906 butting springs, 907 butting sliding grooves, 908 butting pulleys, 909 butting grooves, 10 index finger pushing grooves and 11 finger friction blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a new technical solution: a leather cutting knife special for manual leather comprises a connecting support 1, a hand-held handle 2 is arranged on the upper surface of the connecting support 1, the connecting support 1 is U-shaped, a rotating shaft 6 is fixedly connected in a groove of the connecting support 1, the front end and the rear end of the rotating shaft 6 are respectively fixedly connected on the inner walls of the front side and the rear side of the groove of the connecting support 1, a connecting rotating block 4 is fixedly connected on the lower surface of the hand-held handle 2, a rotating groove 5 is formed in the connecting rotating block 4, the rotating groove 5 respectively extends out of the front side surface and the rear side surface of the connecting rotating block 4, the connecting rotating block 4 is movably sleeved on the rotating shaft 6 through the rotating groove 5, the hand-held handle 2 is rotatably connected with the connecting support 1, the hand-held handle 2 can rotate on the connecting support 1, a forefinger push groove 10 is formed in the upper surface of the hand-held handle 2, the front side surface and the back side surface of the hand-held grip 2 are respectively provided with two finger friction blocks 11, the finger friction blocks 11 are not redundant to the existing structure, the right end structure of the hand-held grip 2 is set to be in a wave arc inclined plane shape, so that a worker holds the right end of the hand-held grip 2 at the palm, the contact surface between the palm of the worker and the hand-held grip 2 is increased, the smoothness degree of the contact surface between the palm and the hand-held grip 2 is also increased, the comfort degree of the worker holding the hand-held grip 2 by the palm is ensured, the index finger end of the worker is placed in the index finger push groove 10, the index finger push groove 10 is set to be an inclined plane groove, so that the index finger of the worker is placed in the most comfortable state in the index finger push groove 10, the thumb of the worker is placed on the finger friction block 11 at the front side of the hand-held grip 2, and the other three fingers are placed on, the friction force between the worker and the handheld grip 2 is further increased, the sliding between the fingers of the worker and the handheld grip 2 is avoided, the operation of the worker is influenced, and when the worker rotates the handheld grip 2 in the anticlockwise direction for use, the fatigue of the worker when holding the handheld grip 2 for a long time is reduced through the mode which is more in accordance with the artificial mechanics, and the comfort of the worker when holding the handheld grip 2 for a long time is guaranteed;

the front side surface and the rear side surface of the connecting bracket 1 are respectively provided with two moving wheels 3, the connecting structures on the two moving wheels 3 are the same and are arranged in a mirror image mode, the rear side surface of each moving wheel 3 is provided with a rotating block 301, the rear end of each rotating block 301 is rotatably connected with a rotating plate 303, the lower surface of the connecting bracket 1 is also respectively fixedly connected with two rotating blocks 301, one end of each rotating plate 303 far away from each moving wheel 3 is rotatably connected to the rotating block 301 on the lower surface of the connecting bracket 1, the connecting bracket 1 is internally provided with two movable grooves 306 respectively, the two movable grooves 306 are respectively arranged on the front side and the rear side of a groove of the connecting bracket 1, the upper surface of each rotating plate 303 is fixedly connected with a push rod 304, the upper end of each push rod 304 finally penetrates into the corresponding movable groove 306 through the lower surface of the connecting bracket 1, the push rod 304 is connected with the connecting, the upper surface of the movable block 305 is fixedly connected with a spring 307, the upper end of the spring 307 is fixedly connected to the inner wall of the top of the movable groove 306, when two movable wheels 3 move to uneven places with high bottoms respectively, the movable wheel 3 located at the high position receives extrusion force, the rotating plate 303 forms extrusion force on the push rod 304, the push rod 304 pushes the movable block 305 to move upwards in the movable groove 306, meanwhile, the spring 307 receives extrusion force to contract, the movable wheel 3 located at the bottom displaces downwards under the action of inertia, the rotating plate 303 pulls the push rod 304 to move downwards, the push rod 304 pulls the movable block 305 to move downwards in the movable groove 306, meanwhile, the movable block 305 forms pulling force on the spring 307, the spring 307 is pulled by the pulling force, the mechanism further ensures that the upper surface of the connecting bracket 1 is always located at the same horizontal plane, and further ensures the use effect of the device, the outer surfaces of the two moving wheels 3 are respectively provided with a friction pattern 302, the friction patterns 302 are arranged into a plurality of oblique Z-shaped grooves which are sequentially and respectively arranged on the outer surfaces of the moving wheels 3 in a mirror image mode by the central lines of the moving wheels 3, so that the friction force when the moving wheels 3 are in contact with the surface of a table top or leather is increased, the automatic condition of the moving wheels 3 when the device is used is avoided, and the stability of the device when the device is used is ensured;

the left side surface of the hand-held handle 2 is fixedly connected with a connecting block 7, the connecting block 7 is arranged to be a structure combining a transverse plate and a vertical plate, the front end of the connecting block 7 is provided with a butt joint block 9, the width of the butt joint block 9 and the width of the vertical plate of the connecting block 7 are equal to the width of the hand-held handle 2, the left end of the connecting block 7 is provided with a cutting blade 8, the structure of the cutting blade 8 is arranged to be in a hook-shaped beak shape, the hook-shaped part and the outer arc surface part of the cutting blade 8 are both arranged to be cutting edges, the material of the cutting blade 8 is made of high-quality high-carbon steel, so that the strength of the cutting blade 8 and the sharpness of the cutting edge are increased, the cutting effect of the cutting blade 8 on leather is further improved, the hook-shaped part and the outer arc surface part of the cutting blade 8 are both arranged to be, when the leather needs to be linearly cut, the cutting blade 8 is rotated to the outer side cambered surface to be contacted with the leather, so that the contact area between the cutting edge and the leather is increased, the stability of the linear cutting on the leather is further ensured, when the cambered surface cutting on the leather needs to be carried out, the handheld handle 2 is rotated clockwise, the hook-shaped part of the cutting blade 8 is contacted with the leather, the leather has good flexibility and easy operation when being cut, and the effect of arc cutting on the leather is further ensured;

the right end of the cutting blade 8 is fixedly connected with a blade connecting block 801, the right end of the blade connecting block 801 is superposed with a gap between a connecting block 7 and a butt joint block 9, the right side surface of the blade connecting block 801 is respectively and fixedly connected with two mortises 803, the left side surface of the vertical plate of the connecting block 7 is respectively provided with two mortises 805, the two mortises 805 extend out of the front side surface of the vertical plate of the connecting block 7, the structure of the mortises 803 is a combination of a rectangle and an isosceles triangle, the mortises 805 are grooves of a combination of a rectangle and an isosceles triangle, the mortises 803 are spliced with the mortises 805, the rear side surface of the butt joint block 9 is respectively and fixedly connected with three locking rods 802, the blade connecting block 801 is respectively provided with three locking grooves 804, the three locking grooves 804 extend out of the front side surface and the rear side surface of the blade connecting, the locking groove 804 and the locking rod 802 are in the same horizontal position, the rear end of the locking rod 802 penetrates through the locking groove 804 on the blade connecting block 801, the rear end of the locking rod 802 is clamped with the locking groove 804 on the connecting block 7, the splicing of the cutting blade 8 on the connecting block 7 is completed, the strength of the connection between the blade connecting block 801 and the connecting block 7 is improved by combining the structure of the tenon block 803 into a rectangular shape and an isosceles triangle shape, the stability of the connection point between the blade connecting block 801 and the connecting block 7 is improved, the phenomenon that the cutting blade 8 is loosened between the blade connecting block 801 and the connecting block 7 when the leather is cut is avoided, and the using effect of the cutting blade 8 is further ensured;

the rear side surface of the butt joint block 9 is fixedly connected with a butt joint rod 901, the butt joint rod 901 is positioned at the right side of a locking rod 802, the front side surface of a vertical plate of a connecting block 7 is provided with a butt joint groove 902, the butt joint groove 902 and the butt joint rod 901 are positioned at the same horizontal position, the rear end of the butt joint rod 901 extends into the butt joint groove 902, two built-in grooves 903 are respectively arranged in the vertical plate of the connecting block 7, the two built-in grooves 903 are respectively communicated with the upper side and the lower side of the butt joint groove 902, two second locking blocks 904 are respectively arranged in the two built-in grooves 903, the connecting structures on the two second locking blocks 904 are the same and are arranged in a mirror image mode, the upper ends of the second locking blocks 904 extend into the butt joint groove 902 through the built-in grooves 903, meanwhile, the butt joint rod 901 is arranged into a cylindrical and truncated cone-shaped combined structure, the upper surface of the second locking blocks 904 is provided with a clamping groove 909, the clamping groove 909 is arranged into, the radius of the small circle of the clamping groove 909 is the same as the radius of the cylinder of the butt joint rod 901, and then two second locking blocks 904 are clamped with the cylinder of the butt joint rod 901 through the clamping groove 909, the lower surface of the second locking block 904 is fixedly connected with a butt joint push rod 905, the lower end of the butt joint push rod 905 penetrates through the lower surface of the connecting block 7, one end of the butt joint push rod 905, which is positioned outside the connecting block 7, is fixedly connected with a pull block, and then the pull block can pull the second locking block 904 to move up and down in the built-in groove 903 through the butt joint push rod 905, the lower surface of the second locking block 904 is fixedly connected with a butt joint spring 906, the lower end of the butt joint spring 906 is fixedly connected to the inner wall of the bottom of the built-in groove 903, and meanwhile, the butt joint spring 906 is movably sleeved on the outer surface of the butt joint push rod 905, meanwhile, when the opposite ends of the two second locking blocks 904 are contacted, the two clamping grooves 909 are spliced into a circular truncated cone-shaped groove, and the rear end of the butt joint rod 901 is contacted with the two clamping grooves 909 respectively, because the butt joint rod 901 is arranged into a cylindrical and circular truncated cone-shaped combined structure, the circular truncated cone of the butt joint rod 901 is contacted with the clamping grooves 909, the smooth degree of a contact surface between the two locking blocks is improved, the friction force between the butt joint rod 901 and the second locking blocks 904 is reduced, the mechanical clamping is avoided, the stability of the device in use is ensured, the butt joint rod 901 forms extrusion force on the two second locking blocks 904 respectively, so that the two second locking blocks 904 are displaced in opposite directions respectively, the second locking blocks are displaced into the built-in grooves 903, and meanwhile, the second locking blocks 904 form extrusion force on the butt joint spring 906, so that the butt joint spring 906 contracts when receiving the extrusion force, when the rear side surface of the butt joint block 9 is overlapped with the front side surface of the vertical plate of the connecting block 7, the cylinder on the butt joint rod 901 is displaced to a position between the two second locking blocks 904, the butt joint spring 906 loses extrusion force to release thrust, the second locking blocks 904 are pushed to an initial position, the two second locking blocks 904 are clamped with the cylinder of the butt joint rod 901 through the clamping groove 909, and then the fixing between the butt joint block 9 and the connecting block 7 is completed;

four butt joint chutes 907 are respectively formed in a vertical plate of the connecting block 7, two of the four butt joint chutes 907 are taken as a group, the two butt joint chutes 907 are respectively communicated with the front side and the rear side of the built-in groove 903, two butt joint pulleys 908 are respectively arranged on the front side and the rear side of one end, located on the built-in groove 903, of the second locking block 904, the second locking block 904 is in sliding connection with the butt joint chutes 907 through the butt joint pulleys 908, stability of the second locking block 904 in displacement in the built-in groove 903 is improved, friction force between the second locking block 904 and the built-in groove 903 is reduced, and smoothness of the second locking block 904 is improved.

The working principle is as follows: when the special leather cutting knife for the hand-made leather is used;

the first step is as follows: the device is placed on leather to be cut, a worker holds the hand-held handle 2 by a hand, the hand-held handle 2 rotates anticlockwise, the hook shape of the cutting blade 8 is in leather contact, and the leather can be cut, and the cutting blade 8 is inclined, so that a right-angled triangle shape is formed between the cutting blade 8 and the connecting support 1, the stability of the worker when the leather is cut through the cutting blade 8 is guaranteed, the situation that the cutting blade 8 shakes is avoided, and meanwhile, two moving wheels 3 are respectively arranged on the front side and the rear side of the connecting support 1, so that the worker can push the device to move on the leather;

the second step is that: according to the condition that the height difference exists between the leather and the table top, when two movable wheels 3 respectively move to the uneven high bottom, the movable wheels 3 located at the high positions are subjected to extrusion force, the rotating plate 303 forms extrusion force on the push rod 304, the push rod 304 pushes the movable block 305 to move upwards in the movable groove 306, the spring 307 is contracted under the extrusion force, the movable wheels 3 located at the bottom are downwards displaced under the action of inertia, the rotating plate 303 pulls the push rod 304 to move downwards, the push rod 304 pulls the movable block 305 to move downwards in the movable groove 306, the movable block 305 forms pulling force on the spring 307, the spring 307 is stretched under the pulling force, and the upper surface of the connecting bracket 1 is always located on the same horizontal plane through the mechanism, so that the using effect of the cutting blade 8 is guaranteed;

the third step: according to the situation that the cutting blade 8 needs to be replaced and polished and maintained in the cutting process for a long time, the tenon 803 on the blade connecting block 801 is spliced with the tenon hole 805 on the connecting block 7, so that the blade connecting block 801 is installed on the connecting block 7, meanwhile, the locking rod 802 on the butt-joint block 9 penetrates through the locking groove 804 on the blade connecting block 801, the rear end of the locking rod 802 is clamped with the locking groove 804 on the connecting block 7, the cutting blade 8 is spliced on the connecting block 7, and when the cutting blade 8 needs to be detached, the detachment can be completed according to the opposite steps;

the fourth step: according to the condition that the cutting blade 8 needs to be fixed with the connecting block 7, the butt joint rod 901 on the butt joint block 9 extends into the butt joint groove 902 on the connecting block 7, and when the rear end of the butt joint rod 901 contacts with the two clamping grooves 909 respectively, the butt joint rod 901 forms extrusion force on the two second locking blocks 904 respectively, so that the two second locking blocks 904 perform displacement in opposite directions respectively, the second locking blocks 904 are displaced into the built-in grooves 903, meanwhile, the second locking blocks 904 form extrusion force on the butt joint spring 906, so that the butt joint spring 906 contracts when the extrusion force is applied to the butt joint spring 906, when the rear side surface of the butt joint block 9 is overlapped with the front side surface of the vertical plate of the connecting block 7, the cylinder on the butt joint rod 901 is displaced to be between the two second locking blocks 904, the butt joint spring 906 loses the extrusion force to release the thrust force, the second locking blocks 904 are pushed to the initial position, and the two second locking blocks 904 are clamped with the cylinder of the butt, and then accomplish and fix between butt joint piece 9 and the connecting block 7 to on making the fixed connecting block 7 of cutting blade 8, when needs demolish it simultaneously, can pull second latch segment 904 up-and-down displacement in built-in groove 903 through drawing the piece through butt joint push rod 905, and then make and lose the contact between second latch segment 904 and the butt joint pole 901, just so can demolish blade 8 with cutting.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.