A cutting device

Abstract

The present invention discloses a cutting device, including a support base, a tool mounting seat, a tool and a locking rod, wherein the support base is provided with a cutting through hole, the tool mounting seat is provided with a cavity for accommodating the tool, and one end of the tool mounting seat is connected with the cutting through hole; the support base is provided with a locking groove, and the locking groove is connected with the cavity of the tool mounting seat; the locking rod is arranged in the locking groove and can slide along the locking groove, thereby locking the tool in the tool mounting seat or releasing the tool in the tool mounting seat. This embodiment can solve the problems of uneven incision, difficult cutting, and easy scratching of items in the box or operators.

Description

Technical Field

[0001] The invention relates to the technical field of cutting tools, and in particular to a cutting device. Background Art

[0002] The logistics industry is developing rapidly year by year. Items are usually packed in cartons and sealed with tape for easy transportation. When it is necessary to open the carton and take out the items in the carton, the common method is to cut the tape with a conventional knife (such as a utility knife, scissors) to open the carton.

[0003] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art:

[0004] When the tape is wrapped thickly or the carton is not a split structure, it is very difficult to cut the tape with a conventional knife, and it is necessary to cut the tape multiple times; if the carton is cut directly, it is easy to scratch the items in the carton. In addition, cutting the tape on the carton with a conventional knife is also prone to uneven cuts, and sharp tools are also easy to cause accidental injuries to the operator. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a cutting device that can solve the problems of uneven cuts, difficult cutting, and easy scratches on items in the box or operators.

[0006] To achieve the above object, a cutting device is provided according to an embodiment of the present invention, comprising:

[0007] It comprises a support base, a tool mounting seat, a tool and a locking rod, wherein the support base is provided with a cutting through hole, the tool mounting seat is provided with a cavity for accommodating the tool, and one end of the tool mounting seat is connected with the cutting through hole;

[0008] The support base is provided with a locking groove, which is communicated with the cavity of the tool mounting seat; the locking rod is arranged in the locking groove and can slide along the locking groove, so as to lock the tool in the tool mounting seat or release the tool in the tool mounting seat.

[0009] Optionally, the tool comprises a blade and a blade holder; the blade is installed in the blade holder, and the blade edge of the blade is exposed at one end of the blade holder;

[0010] The outer surface of the blade holder is provided with a positioning groove, and the inner surface of the tool mounting seat is provided with an elastic positioning block, and the elastic positioning block can be inserted into the positioning groove.

[0011] Optionally, a rebound mechanism is further provided on the blade holder, and when the blade holder slides into the tool mounting seat, the rebound mechanism is blocked outside by the tool mounting seat, so that the rebound mechanism is compressed.

[0012] Optionally, the rebound mechanism includes a limit plate and an elastic member, one end of the elastic member is connected to the tool holder, and the other end is connected to the limit plate; when the blade holder slides into the tool mounting seat, the limit plate is blocked outside by the tool mounting seat, so that the elastic member is compressed.

[0013] Optionally, a locking rod groove is provided on the blade holder, and the locking rod groove is used to slide into the locking rod, so as to lock the blade holder in the tool mounting seat.

[0014] Optionally, the blade holder is provided with an inclined surface at the end where the blade is exposed, and when the elastic positioning block is inserted into the positioning groove, the inclined surface faces the end of the locking rod;

[0015] When the locking rod slides along the locking groove toward the inclined surface, the end of the locking rod pushes the tool out of the tool mounting seat.

[0016] Optionally, a transverse positioning groove is provided on the blade holder, and at least one transverse positioning edge is provided on the inner surface of the tool mounting seat, and the transverse positioning edge is parallel to the sliding direction of the blade holder in the tool mounting seat;

[0017] When the blade holder slides into the tool mounting seat, the transverse positioning edge and the transverse positioning groove are engaged with each other and can slide along the transverse positioning groove.

[0018] Optionally, the other end of the blade holder is provided with a gripping portion, the side of the blade holder is provided with at least two edges, and the gripping portion and the at least two edges form the transverse positioning groove;

[0019] The number of the transverse positioning edges is at least two. When the transverse positioning edges and the transverse positioning groove are engaged with each other, the transverse positioning edges abut against the side walls of the transverse positioning groove.

[0020] Optionally, the sliding direction of the locking rod is perpendicular to the transverse positioning edge, and the transverse positioning groove is connected to the locking rod groove.

[0021] Optionally, it further comprises a push button arranged on the side wall of the locking rod, and the surface of the supporting base is also provided with a locking rod through hole communicating with the locking groove;

[0022] The push button passes through the locking rod through hole and is exposed outside the supporting base. The push button can slide along the locking rod through hole, thereby driving the locking rod to slide along the locking groove.

[0023] Optionally, the number of the tool mounting seats is two, including a first tool mounting seat and a second tool mounting seat, and the first tool mounting seat and the second tool mounting seat are respectively fixed at two ends of the support base;

[0024] One end of the locking rod locks the tool in the first tool mounting seat, and the other end releases the tool in the second tool mounting seat.

[0025] Optionally, along the sliding direction of the locking rod, the length of the locking groove is the same as the length of the locking rod.

[0026] One embodiment of the above invention has the following advantages or beneficial effects: since a cutting through hole is provided on the support base, when the tool is installed in the tool mounting seat, the blade of the tool can pass through the cutting through hole, so the tool can be aligned with the surface of the box for cutting, thereby ensuring the cutting accuracy and the neatness of the incision, and can also improve the convenience of cutting, and at the same time prevent the tool from scratching the items in the box, and can also ensure the neatness of the incision and improve the convenience of cutting; since the blade of the tool passes through the inside of the support base instead of being directly exposed to the outside of the cutting device, it can prevent the blade of the tool from accidentally injuring the operator; since the locking rod locks the tool in the tool mounting seat or pushes the tool mounting seat out, it can be convenient to replace the tool in the tool mounting seat. Therefore, using the cutting device provided by the present invention to cut the surface of the box can not only ensure neat and accurate incisions, but also prevent the tool from scratching the items in the box or the operator, and can also conveniently replace the tool in the tool mounting seat.

[0027] The further effects of the above-mentioned non-conventional optional manner will be described below in conjunction with the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation of the present invention.

[0029] Figure 1 is a schematic structural diagram of a cutting device according to an embodiment of the present invention;

[0030] Figure 2 is a cross-sectional view of a cutting device according to an embodiment of the present invention;

[0031] Figure 3 is a cross-sectional view of a cutting device according to an embodiment of the present invention in an inserted state and a semi-ejected state. DETAILED DESCRIPTION

[0032] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0033] At least one embodiment of the present invention provides a cutting device, such as Figure 1-2 As shown, the cutting device includes a supporting base 1, a tool mounting seat 2, a tool 3 and a locking rod 4. A cutting through hole 11 is provided on the supporting base 1, a cavity 21 for accommodating the tool 3 is provided inside the tool mounting seat 2, and one end of the tool mounting seat 2 is connected with the cutting through hole 11; and a locking groove 12 is provided on the supporting base 1, and the locking groove 12 is connected with the cavity 21 of the tool mounting seat 2; the locking rod 4 is arranged in the locking groove 12 and can slide along the locking groove 12, so as to lock the tool 3 in the tool mounting seat 2 or release the tool 3 in the tool mounting seat 2.

[0034] When in use, the cutter 3 is first installed in the cutter mounting seat 2 so that the blade of the cutter 3 passes through the cutting through hole 11, and then the support base 1 is first placed against the surface of the carton, with the blade of the cutter 3 aligned with the surface of the carton, and then the cutting device is slid so that the cutter 3 cuts the surface of the carton. The cutter 3 can be locked in the cutter mounting seat 2 or released in the cutter mounting seat 2 by reciprocatingly sliding the locking rod 4, so that the cutter 3 can be easily replaced.

[0035] In the embodiment of the present invention, since the cutting through hole 11 is provided on the support base 1, when the cutter 3 is installed in the cutter mounting seat 2, the blade of the cutter 3 can pass through the cutting through hole 11, so the cutter 3 can be aligned with the surface of the box body for cutting, thereby ensuring the cutting accuracy and the neatness of the cut, and can also improve the convenience of cutting, and at the same time prevent the cutter 3 from scratching the items in the box body, and can also ensure the neatness of the cut and improve the convenience of cutting; since the blade of the cutter 3 passes through the inside of the support base 1 instead of being directly exposed to the outside of the cutting device, it can prevent the blade of the cutter 3 from accidentally injuring the operator; since the locking rod 4 locks the cutter 3 in the cutter mounting seat 2 or releases the cutter 3 in the cutter mounting seat 2, it can be convenient to replace the cutter 3 in the cutter mounting seat 2. It can be seen that the use of the cutting device provided by the present invention to cut the surface of the box body can not only ensure neat and accurate cuts, but also prevent the cutter 3 from scratching the items in the box or the operator, and can also conveniently replace the cutter 3 in the cutter mounting seat 2.

[0036] It should be noted that the cutting device can not only cut the surface of a carton, but also the surface of a plastic box, and the embodiment of the present invention does not limit this, as long as the tool can cut the box material. It should also be noted that the cutting device can not only cut the surface of a box, but also any other parts, and the embodiment of the present invention does not limit the use method and use scenario of the cutting device.

[0037] Optionally, the support base 1 may be a right-angle groove, and the tool mounting seat 2 is arranged on the outer wall of the right-angle groove, so that the blade of the tool 3 penetrates into the right-angle groove, such as Figure 1 Therefore, the cutting device can slide along the right-angle edge of the box body under the constraint of the support base 1, so as to cut the surface of the box body, and a complete side of the box body can be cut open by cutting a full circle.

[0038] Alternatively, if Figure 3 As shown, the number of tool mounting seats 2 can be two, including a first tool mounting seat 201 and a second tool mounting seat 202, and the first tool mounting seat 201 and the second tool mounting seat 202 are respectively fixed at two ends of the support base 1; one end of the locking rod 4 locks the tool 3 in the first tool mounting seat 201, and the other end releases the tool 3 in the second tool mounting seat 202. Figure 1-3 As shown, the purpose of setting two tool mounting seats 2 is to facilitate the switching of left and right hand use. When the tool 3 at one end is fully inserted into the tool mounting seat 2, the locking rod 4 is inserted into the tool 3 through the locking groove 12, thereby fixing the tool 3 in the first tool mounting seat 201. At this time, the tool 3 is in a locked state (i.e., an inserted state); and the tool 3 at the other end that has been inserted into the second tool mounting seat 202 is released, and the tool 3 will withdraw from the second tool mounting seat 202. At this time, the tool 3 is in an unlocked state.

[0039] Optionally, along the sliding direction of the locking rod 4, the length of the locking groove 12 is similar to the length of the locking rod 4, and the locking rod 4 cannot lock the tools 3 in the two tool mounting seats 2 at the same time, but can only lock one of the tools 3 in the tool mounting seat 2. Figure 3 As shown, when the locking rod 4 slides upward, only one tool 3 can be locked in the first tool mounting seat 201 . Similarly, when the locking rod 4 slides downward, only the other tool 3 can be locked in the second tool mounting seat 202 .

[0040] In another embodiment of the present invention, Figure 2As shown, the tool 3 includes a blade 31 and a blade holder 32. The blade 31 is installed in the blade holder 32. The blade edge of the blade 31 is exposed at one end of the blade holder 32, so that the blade edge of the blade 31 can be exposed to the cutting through hole 11. In addition, a positioning groove 33 is provided on the outer surface of the blade holder 32, and an elastic positioning block 22 is provided on the inner surface of the tool mounting seat 2. The elastic positioning block 22 can be inserted into the positioning groove 33. When the tool 3 slides in the cavity 21 of the tool mounting seat 2, the positioning groove 33 and the elastic positioning block 22 gradually approach each other until the elastic positioning block 22 is inserted into the positioning groove 33, and the positioning groove 33 is in a state as shown in FIG. Figure 3 Shown in semi-ejected state.

[0041] Optionally, the elastic positioning block 22 can be a bent metal sheet. When the tool 3 slides in the cavity 21 of the tool mounting seat 2, the elastic positioning block 22 is compressed to be flush with the inner surface of the tool mounting seat 2. When the elastic positioning block 22 is opposite to the positioning groove 33, the elastic positioning block 22 is raised and snapped into the positioning groove 33, and the tool 3 cannot slide. Optionally, there are multiple elastic positioning blocks 22, and correspondingly, there can also be multiple positioning grooves 33, and the positioning grooves 33 are matched one by one with the elastic positioning block 22 to improve the snap-fitting firmness between the elastic positioning hole 22 and the positioning groove 33.

[0042] Optionally, the blade 31 can slide in the blade holder 32 to change the length of the blade 31 extending from the cutting through hole 11. Moreover, the blade 31 can be installed in the blade holder 32 in a detachable manner to facilitate replacement of the blade 31.

[0043] In another embodiment of the present invention, Figure 2 As shown, the blade holder 32 is also provided with a rebound mechanism 34. When the blade holder 32 slides into the tool mounting seat 2, the rebound mechanism 34 is blocked outside by the tool mounting seat 2, so that the rebound mechanism 34 is compressed. Figure 3 As shown. The rebound mechanism 34 can play a rebound role, so that the tool 3 that is not locked by the locking rod 4 pops out of the tool mounting seat 2 and is in a semi-popped-out state. Optionally, a plurality of rebound mechanisms 34 can be provided on the blade holder 32, so that the rebound mechanism 34 is stably blocked outside the tool mounting seat 2, for example, a rebound mechanism 34 can be provided on the opposite outer surfaces of the blade holder 32 respectively.

[0044] Alternatively, if Figure 2-3 As shown, the rebound mechanism 34 includes a stopper 341 and an elastic member 342, one end of the elastic member 342 is connected to the tool holder 32, and the other end is connected to the stopper 341; when the blade holder 32 slides into the tool mounting seat 2, the stopper 341 is blocked outside the tool mounting seat 2, so that the elastic member 342 is compressed. The elastic member 342 can be elastic.

[0045] When the tool holder 32 is inserted into the tool mounting seat 2, since the height of the limiting piece 341 is greater than the opening height of the tool mounting seat 2, the limiting piece 341 stays at the opening of the tool mounting seat 2, and the elastic member 342 is gradually compressed. Therefore, in the unlocked state, the tool holder 32 has the kinetic energy to pop outward, and the elastic positioning block 22 and the positioning groove 33 prevent it from completely popping out of the tool mounting seat 2 without human intervention. Figure 3 Shown in semi-ejected state.

[0046] Optionally, a locking rod groove 35 is provided on the blade holder 32, and the locking rod groove 35 is used to slide into the locking rod 4, so as to lock the blade holder 32 in the tool mounting seat 2. When the locking rod 4 exits the locking rod groove 35, the tool holder 32 automatically pops out a certain distance under the action of the rebound mechanism 34, so that the tool holder 32 is in a state as shown in FIG. Figure 3 The semi-pop-up state is shown, and the blade 31 is hidden in the tool mounting seat 2.

[0047] In yet another embodiment of the present invention, Figure 2 As shown, the blade holder 32 is provided with an inclined surface 36 at the end where the blade 31 is exposed. When the elastic positioning block 22 is inserted into the positioning groove 33, the inclined surface 36 faces the end of the locking rod 4; when the locking rod 4 slides along the locking groove 12 toward the inclined surface 36, the end of the locking rod 4 pushes the blade holder 32 out of the tool mounting seat 2. The two ends of the locking rod 4 can be inserted into the corresponding locking rod groove 35, so as to lock the blade holder 32 in the tool mounting seat 2. Optionally, the locking rod 4 is provided with two locking rod push buttons exposed outside the body, and a tip 42 is formed at each end of the locking rod 4, so that when the locking rod groove 35 on the tool holder 32 does not completely match the position of the locking groove 12, the locking rod 4 can still be inserted into the locking rod groove 35, and can also cooperate with the inclined surface 36 of the tool holder 32 in the semi-pop-up state, so as to conveniently push the tool holder 32 out of the tool mounting seat 2.

[0048] Since the locking rod 4 is arranged between the two tool mounting seats 2, only the tool clamp 32 at one end can be locked. The unlocked tool clamp 32 will pop out a certain distance and be in a semi-pop-out state. In the semi-pop-out state, the tool clamp 32 can be pressed into the tool mounting seat 2 again, and the locking rod 4 can be inserted into the locking rod groove 35 to form an inserted state (i.e., a locked state), so that the tool clamps 32 at both ends can be switched conveniently.

[0049] like Figure 3As shown, the tool holders 32 at both ends can be quickly switched between the inserted state (in-use state) and the semi-popped-out state (in-place state), and only one is in the inserted state. When changing the use direction, it is only necessary to press in the tool holder 32 at the other end and insert the locking rod 4, and the two steps can be completed. The tool holder 32 previously used will automatically pop out (semi-popped-out state) because the locking rod 4 is pulled out.

[0050] In another embodiment of the present invention, Figure 2 As shown, a transverse positioning groove 37 is provided on the blade holder 32, and at least one transverse positioning rib 23 is provided on the inner surface of the tool mounting seat 2, and the transverse positioning rib 23 is parallel to the sliding direction of the blade holder 32 in the tool mounting seat 2; when the blade holder 32 slides into the tool mounting seat 2, the transverse positioning rib 23 and the transverse positioning groove 37 are engaged with each other and can slide along the transverse positioning groove 37. Therefore, the blade holder 32 can slide in the tool mounting seat 2 along the transverse positioning rib 23. Optionally, the transverse positioning groove 37 is provided on at least one surface of the blade holder 32 to improve the stability of the blade holder 32 when sliding in the tool mounting seat 2 and prevent the blade holder 32 from deflecting.

[0051] Optionally, a gripping portion 38 is provided at the other end of the blade holder 32, and at least two edges 39 are provided on the side of the blade holder. The gripping portion 38 and the at least two edges 39 enclose a transverse positioning groove 37; the number of transverse positioning edges 23 is at least two, and when the transverse positioning edges 23 and the transverse positioning groove 37 are mutually engaged, the transverse positioning edges 23 are in contact with the side wall of the transverse positioning groove 37. The gripping portion 38 is away from the blade edge of the tool 3 to facilitate the user to grip the blade holder 32. It should be pointed out that the position of the edge 39 matches the position of the transverse positioning edge 23, the number of the edge 39 can be more than two, and the number of the transverse positioning edges 23 is increased accordingly, so that the edge 39 matches the transverse positioning edge 23. Specifically, the edge 39 can be provided on both sides of the blade holder 32, and one end of the edge 39 is connected to the gripping portion 38, so as to enclose the transverse positioning groove 37. Optionally, one end of the elastic member 342 is connected to the grabbing portion 38 of the tool holder 32 , and the other end is connected to the limiting piece 341 .

[0052] Optionally, the sliding direction of the locking rod 4 is perpendicular to the transverse positioning edge 23, and the transverse positioning groove 37 is connected to the locking rod groove 35. Figure 2 As shown, when the locking rod 4 is inserted into the locking rod groove 35 , the locking rod 4 can form a cross lock with the transverse positioning edge 23 to limit the sliding position of the locking rod 4 in the positioning groove 33 .

[0053] Optionally, the cutting device further comprises a push button 41 disposed on the side wall of the locking rod 4, and a locking rod through hole 13 communicating with the locking groove 12 is further provided on the surface of the support base 1; the push button 41 passes through the locking rod through hole 13 and is exposed outside the support base 1, and the push button 41 can slide along the locking rod through hole 13, thereby driving the locking rod 4 to slide along the locking groove 1. When in use, the locking rod 4 can be conveniently driven to slide along the locking groove 1 by pushing the push button 41.

[0054] Alternatively, if Figure 1 As shown, the support base 1 is also provided with a handle 5, so that the cutting device can be moved by holding the handle 5 to achieve cutting. Optionally, the interior of the handle 5 can be hollow, with an openable cover, and a slot for storing spare blades can be provided in the handle 5.

[0055] During use, when the tool holder 32 is inserted into the tool mounting seat 2, the height of the limiting plate 341 of the rebound mechanism 34 is greater than the opening height of the tool mounting seat 2, and the limiting plate 341 cannot enter the tool mounting seat 2 and stays outside the tool mounting seat 2, so that the elastic member 342 connected to the limiting plate 341 is gradually compressed. When the tool holder 32 is inserted to the bottom of the tool mounting seat 2, the blade 31 is in the support base 1, and the locking rod 4 is inserted into the locking rod groove 35 of the tool holder 32 along the locking groove 12, thereby locking the tool holder 32 in the tool mounting seat 2. When the locking rod 4 is pulled out, the rebound mechanism 34 pops out the tool holder 32. During the pop-out process, when the positioning groove 33 on the tool holder 32 passes the elastic positioning block 22 on the inner wall of the tool holder 32, the elastic positioning block 22 is inserted into the positioning groove 33, so that the tool holder 32 stays in the tool mounting seat 2, but the ejection distance has made the blade 31 be pulled out from the support base 1, that is, the semi-ejection state. In the semi-ejection state, the tool holder 32 can be manually pulled out, or the locking rod 4 can be inserted again. The locking rod 4 is now facing the inclined surface 36 of the tool holder 32, and the tool holder 32 can also be ejected by the locking rod 4.

[0056] It can be seen that the cutting device provided by the embodiment of the present invention has a cutting through hole on the support base. When the tool is installed in the tool mounting seat, the blade of the tool can pass through the cutting through hole, so the tool can be aligned with the surface of the box for cutting, thereby ensuring the cutting accuracy and the neatness of the incision, and can also improve the convenience of cutting, and at the same time prevent the tool from scratching the items in the box, and can also ensure the neatness of the incision and improve the convenience of cutting; because the blade of the tool passes through the inside of the support base instead of being directly exposed to the outside of the cutting device, it can prevent the blade of the tool from accidentally injuring the operator; because the locking rod locks the tool in the tool mounting seat or pushes the tool mounting seat out, it can be convenient to replace the tool in the tool mounting seat. Therefore, using the cutting device provided by the present invention to cut the surface of the box can not only ensure neat and accurate incisions, but also prevent the tool from scratching the items in the box or the operator, and can also conveniently replace the tool in the tool mounting seat.

[0057] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cutting device, characterized in that: The tool comprises a support base (1), a tool mounting seat (2), a tool (3) and a locking rod (4); the support base (1) is provided with a cutting through hole (11); the tool mounting seat (2) is provided with a cavity (21) for accommodating the tool (3); and one end of the tool mounting seat (2) is in communication with the cutting through hole (11); The support base (1) is provided with a locking groove (12), the locking groove (12) being in communication with the cavity (21) of the tool mounting seat (2); the locking rod (4) is arranged in the locking groove (12) and is capable of sliding along the locking groove (12), thereby locking the tool (3) in the tool mounting seat (2) or releasing the tool (3) in the tool mounting seat (2); The tool mounting seat (2) comprises a first tool mounting seat (201) and a second tool mounting seat (202), wherein the first tool mounting seat (201) and the second tool mounting seat (202) are respectively fixed to two ends of the support base (1); one end of the locking rod (4) locks the tool (3) in the first tool mounting seat (201), and the other end releases the tool (3) in the second tool mounting seat (202); The tool (3) comprises a blade (31) and a blade holder (32); the blade (31) is installed in the blade holder (32), and the blade edge of the blade (31) is exposed at one end of the blade holder (32).

2. The cutting device according to claim 1, characterized in that The outer surface of the blade holder (32) is provided with a positioning groove (33), and the inner surface of the tool mounting seat (2) is provided with an elastic positioning block (22), and the elastic positioning block (22) can be inserted into the positioning groove (33).

3. The cutting device according to claim 2, characterized in that: The blade holder (32) is also provided with a rebound mechanism (34); when the blade holder (32) slides into the tool mounting seat (2), the rebound mechanism (34) is blocked outside by the tool mounting seat (2), thereby causing the rebound mechanism (34) to be compressed.

4. The cutting device according to claim 3, characterized in that: The rebound mechanism (34) comprises a limiting plate (341) and an elastic member (342); one end of the elastic member (342) is connected to the blade holder (32), and the other end is connected to the limiting plate (341); when the blade holder (32) slides into the tool mounting seat (2), the limiting plate (341) is blocked outside by the tool mounting seat (2), thereby causing the elastic member (342) to be compressed.

5. The cutting device according to claim 2, characterized in that: The blade holder (32) is provided with a locking rod groove (35), and the locking rod groove (35) is used to slide into the locking rod (4), thereby locking the blade holder (32) in the tool mounting seat (2).

6. The cutting device according to claim 5, characterized in that The blade holder (32) is provided with an inclined surface (36) at the end where the blade (31) is exposed, and when the elastic positioning block (22) is inserted into the positioning groove (33), the inclined surface (36) faces the end of the locking rod (4); When the locking rod (4) slides along the locking groove (12) toward the inclined surface (36), the end of the locking rod (4) pushes the blade holder (32) out of the tool mounting seat (2).

7. The cutting device according to claim 5, characterized in that The blade holder (32) is provided with a transverse positioning groove (37), and the inner surface of the tool mounting seat (2) is provided with at least one transverse positioning edge (23), wherein the transverse positioning edge (23) is parallel to the sliding direction of the blade holder (32) in the tool mounting seat (2); When the blade holder (32) slides into the tool mounting seat (2), the transverse positioning edge (23) and the transverse positioning groove (37) are mutually engaged and can slide along the transverse positioning groove (37).

8. The cutting device according to claim 7, characterized in that The other end of the blade holder (32) is provided with a gripping portion (38), the side of the blade holder is provided with at least two edges (39), and the gripping portion (38) and the at least two edges (39) enclose the transverse positioning groove (37); The number of the transverse positioning edges (23) is at least two, and when the transverse positioning edges (23) and the transverse positioning groove (37) are mutually engaged, the transverse positioning edges (23) are in contact with the side wall of the transverse positioning groove (37).

9. The cutting device according to claim 8, characterized in that The sliding direction of the locking rod (4) is perpendicular to the transverse positioning edge (23), and the transverse positioning groove (37) is connected to the locking rod groove (35).

10. The cutting device according to claim 1, characterized in that Along the sliding direction of the locking rod (4), the length of the locking groove (12) is the same as the length of the locking rod (4).

11. The cutting device according to any one of claims 1 to 10, further comprising a push button (41) arranged on the side wall of the locking rod (4), and a locking rod through hole (13) communicating with the locking groove (12) is also opened on the surface of the support base (1); The push button (41) passes through the locking rod through hole (13) and is exposed outside the support base (1); the push button (41) can slide along the locking rod through hole (13), thereby driving the locking rod (4) to slide along the locking groove (12).

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