Cutter with replaceable blade

Abstract

The cutter comprises a cutter handle, a blade bearing and the blade, the blade bearing is provided with a buckling groove, a limiting piece is arranged on the upper side of the buckling groove, a check block is arranged on the lower side of the buckling groove, when the blade is installed in the buckling groove, the upper end of the blade is arranged between the limiting piece and the bottom of the buckling groove, and the lower side of the blade abuts against the upper side of the check block. The blade seat is provided with a first sliding groove, a sliding block is connected in the first sliding groove in a sliding mode, and when the blade is installed in the buckling groove, the end of the sliding block can abut against the left side of the blade and be separated from the blade by pushing the sliding block. After the blade of the cutter is damaged, the blade can be independently detached and replaced, so that the cutter handle can be continuously utilized without causing waste, and the blade is convenient and quick to replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting tools, and in particular relates to a tool with a replaceable blade. Background Art

[0002] A knife is a daily item used for cutting objects. Its structure generally includes a handle and a blade arranged at the front end of the handle. The blade will have a sharp blade. When in use, the user can hold the handle to operate the blade to cut objects, making the cutting operation convenient.

[0003] Among them, when the tool is cutting objects, the blade will inevitably be damaged such as chipping and blunting after long-term use. The handle and blade of a traditional tool are generally difficult to separate. Therefore, when the blade is damaged and cannot be replaced, the entire tool needs to be scrapped, thus wasting the intact handle. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a tool with a replaceable blade.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a tool with a replaceable blade, comprising a handle, a blade seat arranged at the front end of the handle, and a blade detachably connected to the blade seat; a buckle groove cooperating with the blade is opened on the left side of the above-mentioned blade seat, a limit piece is provided at the upper side of the buckle groove, a gap is provided between the limit piece and the bottom of the buckle groove, and a stop block is provided at the lower side of the buckle groove, when the blade is installed in the buckle groove, the upper end of the blade is placed between the limit piece and the bottom of the buckle groove, and the lower side of the blade abuts against the upper side of the stop block; a first sliding groove is opened at the rear side of the above-mentioned blade seat corresponding to the buckle groove, and a slider is slidably connected in the first sliding groove, and when the blade is installed in the buckle groove, pushing the slider will cause the end of the slider to abut against the left side of the blade and detach from the blade.

[0006] In the above scheme, by providing a blade seat at the front end of the knife handle, the blade is detachably connected to the blade seat, so that when the blade is damaged, the blade can be removed separately for replacement, so that the knife handle can continue to be used without causing waste. When the blade needs to be installed, the upper end of the blade can be inserted between the limiter and the bottom of the buckle groove, and then the lower side of the blade is abutted against the upper side of the block, so that the blade is installed in the buckle groove, and finally the lower end of the slider end is pushed downward to abut against the left side of the blade, and the installation operation of the blade can be completed. When the blade needs to be removed, the lower end of the slider can be pushed upward to slide out of the buckle groove and disengage from the abutment with the blade, and then the lower side of the blade is moved to the left to disengage from the abutment with the block, and then the blade is moved downward to disengage from the buckle groove, and the removal operation of the blade can be completed. The blade is easy to disassemble and assemble, and the blade replacement operation is convenient and quick.

[0007] Furthermore, the first slide groove is connected to the buckle groove, a guide hole is provided in the first slide groove, a guide block is provided on the right side of the slider, the guide block is placed in the guide hole and can slide relative to the guide hole, the slider slides up and down along the guide hole through the guide block, which can improve the sliding stability of the slider, wherein, when sliding downward, the lower end of the slider will slide into the first slide groove and abut against the left side of the blade, and when sliding upward, the lower end of the slider will slide out of the buckle groove and detach from the blade. A positioning piece is connected to the right side of the guide block, the positioning piece is located at the right side of the blade seat, and the width of the positioning piece is greater than the width of the guide hole, so that the positioning piece cannot pass through the guide hole, which can prevent the guide block from detaching from the guide hole and ensure the installation stability of the slider.

[0008] Furthermore, a card block is provided at the upper side of the above-mentioned buckle slot, and a notch is opened at the position of the card block on the upper side of the blade. When the blade is installed in the buckle slot, the notch cooperates with the card block. At this time, the card block will prevent the blade from moving forward and backward, so that the blade is firmly installed in the buckle slot, thereby ensuring the installation stability of the blade.

[0009] Furthermore, the positioning member is a first adjusting screw, which includes a first stud and a first nut connected to the first stud, the first stud is threadedly connected to the guide block, and the width of the first nut is greater than the width of the guide hole. This makes it easier to disassemble and assemble the slider, and by tightening the first adjusting screw, the distance between the slider and the bottom of the buckle groove can be adjusted to accommodate the installation of blades of different thicknesses, and the blades can be more reliably pressed.

[0010] Furthermore, an avoidance groove is provided on the right side of the blade seat corresponding to the position of the first nut. The first nut is located in the avoidance groove and can slide in the avoidance groove. This prevents the first nut from extending out of the right side of the blade seat, making the structure more compact.

[0011] Furthermore, an elastic member is provided in the first slide groove to push the slider toward the blade, so that the slider will not naturally slide upward and break away from the interference with the left side of the blade under the elastic force of the elastic member, further improving the installation reliability of the blade and the blade seat.

[0012] Furthermore, the above-mentioned elastic member is a first spring arranged in the first slide groove, and a spring installation groove is opened in the first slide groove corresponding to the position of the first spring. The two ends of the first spring are respectively against the upper side of the spring installation groove and the upper side of the guide block. The first spring is positioned by the spring installation groove, so that the installation stability of the first spring can be guaranteed. In the absence of external force, the first spring will push the guide block to drive the slider to slide downward through its own elastic force, thereby preventing the slider from sliding upward naturally.

[0013] Furthermore, the above-mentioned limiting member is a second adjusting screw, which includes a second stud and a second nut connected to the second stud. The second stud is threadedly connected to the left side of the blade seat, and the upper end of the blade is placed between the second nut and the bottom of the buckle groove, so that the second nut can block the upper end of the blade from moving to the left, and by tightening the second adjusting screw, the distance between the second nut and the bottom of the buckle groove can be adjusted to adapt to the installation and use of blades of different thicknesses, and the blade can be pressed more reliably.

[0014] Furthermore, the above-mentioned knife handle includes a left handle piece and a right handle piece that are arranged opposite to each other, and the rear end of the blade seat is hinged to the front end position between the two handle pieces, and the blade seat can be rotated to open and fold relative to the two handle pieces. When the tool is not in use, the blade seat can be rotated to drive the blade to fold between the two handle pieces to protect the blade, and can reduce the size of the tool, making it convenient to carry and store the tool. The above-mentioned tool also includes a locking mechanism for locking the blade seat in an open state, the locking mechanism includes a locking block, a push rod connected to the left end face of the locking block, a button, and a second spring, the left end of the push rod passes through the left handle piece, the button is connected to the left end of the push rod, and the button is located at the outer side of the left handle piece, the tail end of the blade seat is provided with a first bayonet that cooperates with the locking block, and the inner side of the right handle piece is provided with a second slide groove, the locking block is placed in the second slide groove, and can slide left and right relative to the second slide groove. When in use, when the blade holder is rotated to the open state, the second spring will push the lock block to slide to the left out of the second slide slot and cooperate with the first bayonet without external force. At this time, the blade holder cannot rotate due to the cooperation between the first bayonet and the left end of the lock block, so that the blade holder can be locked in the open state. After pressing the button to push the lock block to slide to the right into the second slide slot and disengage from the first bayonet, the lock of the blade holder in the open state can be released, so that the blade holder can be rotated and folded.

[0015] Furthermore, a second bayonet for cooperating with the locking block is provided on the right side of the rear end of the blade seat. When the blade seat is rotated to the folded state, the second spring will push the locking block to slide out of the second slide groove to the left and cooperate with the second bayonet without external force. At this time, the blade seat cannot rotate due to the cooperation between the second bayonet and the left end of the locking block, thereby locking the blade seat in the folded state. After pressing the button to push the locking block to slide rightward into the second slide groove and disengage from the second bayonet, the lock of the blade seat in the folded state can be released, so that the blade seat can be rotated to open.

[0016] The beneficial effects of the tool with replaceable blade of the utility model are:

[0017] 1. The blade can be removed and replaced separately, so that the handle can continue to be used without causing waste, and the blade disassembly and assembly operation is convenient and quick.

[0018] 2. The distance between the lower end of the slider and the bottom of the buckle groove can be adjusted by turning the first adjusting screw, and the distance between the second nut and the bottom of the buckle groove can be adjusted by turning the second adjusting screw. This can adapt to the installation and use of blades of different thicknesses and can more reliably press the blades.

[0019] 3. The blade holder can be rotated and folded, which is convenient for carrying and storage. The blade holder can be locked in the open and folded state through the lock block, and can be unlocked by pressing a button, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic diagram of the exploded structure of a tool according to an embodiment of the present utility model.

[0021] Figure 2 The figure is a schematic diagram of the exploded structure of the blade holder of the tool according to the embodiment of the utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the tool in the open state of the embodiment of the utility model (in the figure, the lower end of the slider is separated from the blade).

[0023] Figure 4 This is a schematic diagram of the structure of the knife in the open state according to an embodiment of the utility model (in the figure, the lower end of the slider is against the blade, and the left handle structure is omitted).

[0024] Figure 5 It is a schematic diagram of the structure of the knife in the folded state according to the embodiment of the utility model (in the figure, the lower end of the slider is against the blade, and the left handle structure is omitted).

[0025] Figure 6 It is a schematic structural diagram of a blade seat of a tool according to an embodiment of the utility model.

[0026] Figure 7 It is a cross-sectional view of the tool in the embodiment of the utility model when the left end of the locking block is in a state of cooperation with the first bayonet. DETAILED DESCRIPTION

[0027] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0030] Embodiment 1

[0031] like Figure 1-4 As shown, the present embodiment provides a tool with a replaceable blade, comprising a handle 1, a blade seat 2 arranged at the front end of the handle 1, and a blade 3 detachably connected to the blade seat 2. A buckle groove 21 cooperating with the blade 3 is provided on the left side of the blade seat 2. A limit piece 211 and a clamping block 212 are provided at the upper side of the buckle groove 21. There is a gap between the limit piece 211 and the bottom of the buckle groove 21, and a block 213 is provided at the lower side of the buckle groove 21. A notch 31 is provided on the upper side of the blade 3. When the blade 3 is installed in the buckle groove 21, the upper end of the blade 3 is placed between the limit piece 211 and the bottom of the buckle groove 21, and the notch 31 cooperates with the clamping block 212, while the lower side of the blade 2 abuts against the upper side of the block 213.

[0032] The left side of the blade seat 2 is provided with a first slide groove 22 connected to the buckle groove 21 at the rear side of the buckle groove 21, and a slider 4 is slidably connected in the first slide groove 22, and the slider 4 will not separate from the first slide groove 22. When the blade 3 is installed in the buckle groove, pushing the lower end of the slider 4 downward will slide into the buckle groove 21 and abut against the left side of the blade 4, and pushing the lower end of the slider 4 upward will slide out of the buckle groove 21, thereby separating from the blade 4.

[0033] When the tool with replaceable blades of this embodiment is used, when the blade 3 needs to be installed, the lower end of the slider 4 can be pushed upward to slide out of the buckle groove 21, and then the upper end of the blade 3 can be inserted into the position between the limit member 211 and the bottom of the buckle groove 21, and the notch 31 cooperates with the block 212, and the lower side of the blade 3 abuts against the upper side of the stopper 213, as shown in FIG. Figure 3 As shown, the blade 3 is installed in the buckle groove 21, and finally the lower end of the slider 4 is pushed downward to slide into the buckle groove 21 and abut against the left side of the blade 3, as shown in FIG. Figure 4 As shown, the installation operation of the blade 3 is completed.

[0034] For example Figure 4 As shown, when the blade 3 is in the installed state, the block 212 will prevent the blade 3 from moving forward and backward, the stopper 213 will prevent the blade 3 from moving downward, and the limiter 211 will prevent the upper end of the blade 3 from moving to the left, and the lower end of the slider 4 will prevent the rear end of the blade 3 from moving to the left, so that the blade 3 can be firmly installed in the buckle groove 21 position of the blade seat 2, ensuring the installation stability of the blade 3.

[0035] When the blade 3 needs to be removed, the lower end of the slider 4 can be pushed upward to slide out of the buckle groove 21 and disengage from the abutment with the blade 3, and then the lower side of the blade 3 can be moved to the left to disengage from the abutment with the stopper 213, and then the blade 3 can be moved downward to disengage from the buckle groove 21, and the removal operation of the blade 3 can be completed.

[0036] The tool of this embodiment is provided with a blade seat 2 at the front end of the blade handle 1, and the blade 3 is snapped into the snap groove 21 of the blade seat 2. In this way, when the blade 3 is damaged, the blade 3 can be disassembled and replaced separately, so that the blade handle 1 can continue to be used without causing waste, and the disassembly and assembly of the blade 3 is convenient, so that the user can quickly replace the blade 3.

[0037] Embodiment 2

[0038] This embodiment is a further improvement on the tool structure with replaceable blades in the first embodiment. The improvement is as follows: Figure 2 As shown, a guide hole 221 is provided in the first slide groove 22, and a guide block 41 is provided at the middle position on the right side of the slider 4. The guide block 41 is placed in the guide hole 221 and can slide up and down relative to the guide hole 221. The slider 4 slides up and down along the guide hole 221 through the guide block 41, which can improve the sliding stability of the slider 4. A positioning member 42 is connected to the right side of the guide block 41, and the positioning member 42 is located at the right side of the blade seat 2, and the width of the positioning member 42 is greater than the width of the guide hole 221, so that the positioning member 42 cannot pass through the guide hole 221, which can prevent the guide block 41 from slipping out of the guide hole 221 to the left, thereby ensuring the sliding stability of the slider 4.

[0039] Specifically, the positioning member 42 is a first adjusting screw, which includes a first stud 421 and a first nut 422 connected to the first stud 421. The first stud 421 is threadedly connected to the guide block 41, and the width of the first nut 422 is greater than the width of the guide hole 221. This makes it easier to disassemble and assemble the slider 4, and by tightening the first adjusting screw, the distance between the slider 4 and the bottom of the buckle slot 21 can be adjusted to accommodate the installation and use of blades 3 of different thicknesses. Figure 4 As shown, when the blade 3 is placed between the slider 4 and the bottom of the buckle groove 21, the first nut 422 can be continuously rotated in the tightening direction so that the lower end of the slider 4 can tightly clamp the left rear end position of the blade 3, thereby improving the installation stability of the blade 3.

[0040] like Figure 3 As shown, there are two stoppers 211, which are respectively located at the front and rear ends of the upper side of the buckle slot 21, so that the upper end of the blade 3 can be more reliably prevented from moving leftward. Figure 2 As shown, the above-mentioned limiting member 211 is a second adjusting screw, and the second adjusting screw includes a second stud 2111 and a second nut 2112 connected to the second stud 2111, and the second stud 2111 is threadedly connected to the left side of the blade seat 2. Figure 4 As shown, when the blade 2 is installed in the buckle groove 21, the upper end of the blade 2 is placed between the second nut 2112 and the bottom of the buckle groove 21, so that the second nut 2112 can prevent the upper end of the blade 2 from moving leftward. At this time, the second nut 2112 can be further rotated in the tightening direction, so that the second nut 2112 tightly clamps the upper left end of the blade 3, thereby improving the installation stability of the blade 3. In addition, by tightening the second adjusting screw, the distance between the second nut 2112 and the bottom of the buckle groove 21 can be adjusted to adapt to the installation and use of blades 3 of different thicknesses.

[0041] like Figure 2 As shown, the first slide groove 22 is provided with an elastic member 5 for pushing the slider 4 to slide downward. In this way, the slider 4 will not naturally slide upward and break away from the left side of the blade 6 under the elastic force of the elastic member, further improving the installation stability of the blade 3 and the blade seat 2.

[0042] Specifically, the elastic member 5 is a first spring arranged in the first slide groove 22. A spring installation groove 222 is provided in the first slide groove 22 corresponding to the position of the first spring. The upper end of the first spring abuts against the bottom of the spring installation groove 222, and the lower end abuts against the upper side of the guide block 41. The first spring is positioned by the spring installation groove 222 to ensure the installation stability of the first spring. In the absence of external force, the first spring pushes the guide block 41 to drive the slider 4 to slide downward through its own elastic force, thereby preventing the slider 4 from sliding upward naturally.

[0043] The tool with replaceable blades in this embodiment can be adapted to the installation and use of blades of different thicknesses. For example, when a blade 3 with a smaller thickness needs to be installed, the first adjusting screw can be rotated in the tightening direction to reduce the distance between the lower end of the slider 4 and the bottom of the buckle slot 21, and then the second adjusting screw can be rotated in the tightening direction to reduce the distance between the second nut 2112 and the bottom of the buckle slot 21, so that it can be adapted to the installation and use of a blade 3 with a smaller thickness. When the first adjusting screw and the second adjusting screw are rotated in the loosening direction, the distance between the lower end of the slider 4 and the second nut 2112 and the bottom of the buckle slot 21 can be increased, so that it can be adapted to the installation and use of a blade 3 with a larger thickness.

[0044] Embodiment 3

[0045] This embodiment is a further improvement on the tool structure with replaceable blades in the second embodiment. The improvement is as follows: Figure 1 , 3 As shown in Figures 5 and 6, the handle 1 comprises a left handle piece 11 and a right handle piece 12 arranged opposite to each other, the rear end of the blade holder 2 is hinged to the front end between the two handle pieces, and the blade holder 2 can be rotated to open and fold relative to the two handle pieces. When the knife is not in use, the blade holder 2 can be rotated to drive the blade 3 to fold between the two handle pieces to protect the blade 3, and the size of the knife can be reduced, making it convenient to carry and store the knife.

[0046] like Figure 6 As shown, an avoidance groove 23 is provided at the position of the first nut 422 corresponding to the right side of the above-mentioned blade seat 2, and the first nut 422 is located in the avoidance groove 23. The first nut 422 can slide in the avoidance groove 23, so that the first nut 422 will not extend out of the external position of the right side surface of the blade seat 2, so that the first nut 422 will not interfere with the rotation and folding of the blade seat 2, and the tool structure is more compact.

[0047] like Figure 1 , 7 As shown, the above-mentioned tool also includes a locking mechanism for locking the blade seat 2 in an open state, the locking mechanism includes a locking block 61, a push rod 62 connected to the left end face of the locking block 61, a button 63, and a second spring 64, the left end of the push rod 62 passes through the left handle piece 11, the button 63 is connected to the left end of the push rod 62, and the button 63 is located at the outer side of the left handle piece 11, the rear end of the blade seat 2 is provided with a first bayonet 24 that cooperates with the locking block 61, and the inner side of the right handle piece 12 is provided with a second slide groove 121, the locking block 61 is placed in the second slide groove 121, and can slide left and right relative to the second slide groove 121. A spring groove 611 is provided on the right end surface of the above-mentioned locking block 61, and the second spring 64 is placed in the spring groove 611. The spring groove 611 can improve the installation stability of the second spring 64. The two ends of the second spring 64 are respectively against the bottom of the spring groove 611 and the bottom of the second sliding groove 121. In the absence of external force, the second spring 64 will push the locking block 41 to slide to the left through its own elastic force.

[0048] like Figure 4 , 7 As shown, when the blade seat 2 is rotated to the open state, the second spring 64 will push the lock block 61 to slide out of the second slide groove 121 to the left without external force and cooperate with the first bayonet 24. At this time, the blade seat 2 cannot rotate due to the cooperation between the first bayonet 24 and the left end of the lock block 61, so that the blade seat 2 can be locked in the open state. After pressing the button 63 to push the lock block 61 to slide rightward into the second slide groove 121 and disengage from the first bayonet 24, the lock of the blade seat 2 in the open state can be released, so that the blade seat 2 can be rotated and folded.

[0049] like Figure 5 , 6 As shown, the right side of the rear end of the blade seat 2 is provided with a second bayonet 25 that cooperates with the lock block 61. When the blade seat 2 is rotated to the folded state, the second spring 64 will push the lock block 61 to slide out of the second slide groove 121 to the left without external force to cooperate with the second bayonet 25. At this time, the blade seat 2 cannot be rotated due to the cooperation between the second bayonet 25 and the left end of the lock block 61, so that the blade seat 2 can be locked in the folded state. After pressing the button 63 to push the lock block 61 to slide rightward into the second slide groove 121 and disengage from the second bayonet 25, the lock of the blade seat 2 in the folded state can be released, so that the blade seat 2 can be rotated to open.

[0050] As an improvement of this embodiment, Figure 1 As shown, the left end of the locking block 61 is preferably a truncated cone structure, which can facilitate the engagement and disengagement of the left end of the locking block 61 with the first bayonet 24 and the second bayonet 25. In addition, a third slide groove 111 is provided on the outer side of the left handle 11 corresponding to the position of the button 63, and the button 63 is placed in the third slide groove 111 and can slide left and right relative to the third slide groove 111, which can improve the sliding stability of the button 63.

[0051] like Figure 1 , 2 As shown, a positioning column 7 is provided at the front end between the left handle piece 11 and the right handle piece 12, and a first contact surface 26 and a second contact surface 27 are provided at the rear end of the blade seat 2. Figure 4 As shown, when the blade seat 2 is rotated to the open state, the first contact surface 26 of the blade seat 2 abuts against the positioning column 7. At this time, the positioning column 7 can prevent the blade seat 2 from excessively rotating in the opening direction, and can also position the blade seat 2 in the open state, so that the left end of the locking block 61 can be better aligned with the first bayonet 24, making it easier to fit.

[0052] like Figure 5 As shown, when the blade seat 2 is rotated to the folded state, the second contact surface 27 of the blade seat 2 abuts against the positioning column 7. At this time, the positioning column 7 can prevent the blade seat 2 from excessively rotating in the folding direction, and can also position the blade seat 2 in the folded state, so that the left end of the locking block 61 can be better aligned with the second bayonet 25.

[0053] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A tool with replaceable blades, characterized in that: It comprises a knife handle (1), a blade seat (2) arranged at the front end of the knife handle (1), and a blade (3) detachably connected to the blade seat (2); The left side of the blade seat (2) is provided with a buckling groove (21) matched with the blade (3); a limiting member (211) is provided at the upper side of the buckling groove (21); a gap is provided between the limiting member (211) and the bottom of the buckling groove (21); and a stopper (213) is provided at the lower side of the buckling groove (21); when the blade (3) is installed in the buckling groove (21), the upper end of the blade (3) is placed between the limiting member (211) and the bottom of the buckling groove (21), and the lower side of the blade (3) abuts against the upper side of the stopper (213); The blade seat (2) is provided with a first sliding groove (22) at a position on the rear side corresponding to the buckle groove (21), and a slider (4) is slidably connected in the first sliding groove (22). When the blade (3) is installed in the buckle groove (21), pushing the slider (4) causes the end of the slider (4) to abut against the left side of the blade (3) and to detach from the blade (3).

2. The tool with replaceable blade according to claim 1, characterized in that: The first slide groove (22) is connected to the buckle groove (21), a guide hole (221) is provided in the first slide groove (22), a guide block (41) is provided on the right side of the slider (4), the guide block (41) is placed in the guide hole (221) and can slide relative to the guide hole (221), a positioning piece (42) is connected to the right side of the guide block (41), the positioning piece (42) is located on the right side of the blade seat (2), and the width of the positioning piece (42) is greater than the width of the guide hole (221).

3. The tool with replaceable blade according to claim 1, characterized in that: A clamping block (212) is provided on the upper side of the buckle slot (21), and a notch (31) is provided on the upper side of the blade (3) at a position corresponding to the clamping block (212). When the blade (3) is installed in the buckle slot (21), the notch (31) cooperates with the clamping block (212).

4. The tool with replaceable blade according to claim 2, characterized in that: The positioning member (42) is a first adjusting screw, which includes a first stud (421) and a first nut (422) connected to the first stud (421). The first stud (421) is threadedly connected to the guide block (41), and the width of the first nut (422) is greater than the width of the guide hole (221).

5. The tool with replaceable blade according to claim 4, characterized in that: An escape groove (23) is provided on the right side of the blade seat (2) corresponding to the position of the first nut (422), the first nut (422) is located in the escape groove (23), and the first nut (422) can slide in the escape groove (23).

6. The tool with replaceable blade according to claim 2, characterized in that: An elastic member (5) is provided in the first sliding groove (22) for pushing the sliding block (4) toward the blade (3).

7. The tool with replaceable blade according to claim 6, characterized in that: The elastic member (5) is a first spring arranged in the first slide groove (22), a spring installation groove (222) is provided in the first slide groove (22) corresponding to the position of the first spring, and two ends of the first spring respectively abut against the bottom of the spring installation groove (222) and the guide block (41).

8. The tool with replaceable blade according to claim 1, characterized in that: The limiting member (211) is a second adjusting screw, which includes a second stud (2111) and a second nut (2112) connected to the second stud (2111), the second stud (2111) is threadedly connected to the left side of the blade seat (2), and the upper end of the blade (3) is placed between the second nut (2112) and the bottom of the buckle groove (21).

9. The tool with replaceable blade according to any one of claims 1 to 8, characterized in that: The knife handle (1) comprises a left handle piece (11) and a right handle piece (12) which are arranged opposite to each other. The rear end of the blade seat (2) is hinged to the front end position between the two handle pieces. The blade seat (2) can be rotated relative to the two handle pieces to open and fold. The knife also comprises a locking mechanism for locking the blade seat (2) in an open state. The locking mechanism comprises a locking block (61), a push rod (62) connected to the left end face of the locking block (61), a button (63), and a second spring (64). The left end of the push rod (62) passes through the left handle piece (11). The button (63) is connected to the left end of the push rod (62). The button (63) is located on the left handle piece (11). At the outer position, a first bayonet (24) cooperating with the locking block (61) is provided at the rear end of the blade seat (2), and a second slide groove (121) is provided on the inner side of the right handle piece (12). The locking block (61) is placed in the second slide groove (121) and can slide left and right relative to the second slide groove (121). When the blade seat (2) is rotated to an open state, the second spring (64) will push the locking block (61) to slide out of the second slide groove (121) to the left and cooperate with the first bayonet (24) in the absence of external force, and pressing the button (63) will push the locking block (61) to slide rightward into the second slide groove (121) and disengage from the first bayonet (24).

10. The tool with replaceable blade according to claim 9, characterized in that: The rear end of the blade seat (2) is also provided with a second bayonet (25) cooperating with the locking block (61). When the blade seat (2) is rotated to a folded state, the second spring (64) will push the locking block (61) to slide to the left out of the second slide groove (121) and cooperate with the second bayonet (25) in the absence of external force.

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