Cutting machine

Abstract

A cutting machine comprises a fixing part, a main body part and a cutting piece. An adjusting groove is formed in the fixing part and comprises a plurality of sliding grooves; the cutting machine further comprises a locking mechanism, and the locking mechanism comprises a gear selecting piece rotating around the first axis, a pushing piece rotating around the second axis and a locking pin. The gear selection part is provided with a plurality of grooves for limiting the maximum rotating position of the pushing part, the grooves are distributed at intervals in the circumferential direction, the concave depths of the grooves are unequal, and the pushing part can be clamped into different grooves according to different rotating angles of the gear selection part; the locking pin is in transmission connection with the pushing piece, and when the pushing piece is clamped into the different grooves, the locking pin is matched with the different sliding grooves so as to allow the cutting piece to pivot to different positions relative to the fixing part. Through the arrangement, the number of parts is small, design is easy and convenient, the space utilization rate is high, and the cutting machine can be conveniently and rapidly adjusted to different cutting depth modes.

Description

[Technical field]

[0001] The present application relates to the technical field of electric tools, and in particular to a cutting machine that can be conveniently and quickly adjusted to different cutting depth modes. [Background Technology]

[0002] A related art provides a cutting machine, which includes a fixing portion and a cutting member that can pivot relative to the fixing portion. When in use, the fixing portion is fixed relative to a workpiece, and then the workpiece is cut by the cutting member. The cutting machine has different modes. In different cutting depth modes, the cutting member pivots at different angles relative to the fixing portion, so that the cutting member can cut different depths on the workpiece.

[0003] However, the cutting machine in the related art is inconvenient to operate when switching between different modes, and has problems such as complex parts and inability to quickly switch modes. [Summary of the invention]

[0004] The present application provides a cutting machine to solve the problem of how to enable the mode of the cutting machine to be switched quickly.

[0005] The embodiment of the present application provides a cutting machine, comprising a fixing part, a main body part pivotally connected to the fixing part, a driving mechanism arranged on the main body part, a cutting member driven by the driving mechanism, and a switch electrically connected to the driving mechanism, and the main body part is also provided with a trigger capable of triggering or releasing the switch. An adjusting groove is arranged on the fixing part, and the adjusting groove comprises a plurality of slide grooves; the cutting machine further comprises a locking mechanism, and the locking mechanism comprises a gear selection member rotating around a first axis, a push member rotating around a second axis, and a locking pin engaged with the slide groove; the gear selection member is provided with a groove for limiting the maximum rotation position of the push member, and a plurality of grooves are arranged at intervals along the circumferential direction around the first axis, and the recessed depths of the plurality of grooves are not equal, and the push member can be inserted into different grooves according to different rotation angles of the gear selection member; the locking pin is transmission-connected to the push member, and when the push member is matched with different grooves, the push member has different maximum rotation positions, and the locking pin is matched with different slide grooves to allow the cutting member to pivot to different positions relative to the fixing part.

[0006] The above-mentioned cutting machine can allow the cutting member to pivot to different positions relative to the fixed part by inserting the push member into different grooves of the gear selection member, that is, changing the mode of the cutting machine. Since it is only necessary to rotate the gear selection member and then push the push member into the corresponding groove to switch the mode of the cutting machine, it is convenient to quickly switch the mode. In this solution, the locking mechanism of the cutting machine only needs three key components: the gear selection member, the push member, and the locking pin, so that the cutting depth mode can be switched conveniently and quickly.

[0007] In one embodiment, the second axis is arranged parallel to the first axis, and the recessed direction of the groove is perpendicular to the second axis.

[0008] In one of the embodiments, the groove depths of multiple slide grooves are not equal; the locking pin moves along the third axis, and the locking pin is constructed so that when the pushing member is inserted into any groove, the locking pin is driven by the pushing member to move along the third axis, so that the locking pin slides to fit the bottom surface of the corresponding slide groove.

[0009] In one embodiment, the adjustment groove extends along an arc or a straight line, a plurality of slide grooves are distributed along the extension direction of the adjustment groove, and the groove depths of different slide grooves decrease successively from one end to the other end of the adjustment groove.

[0010] In one embodiment, the locking mechanism also includes a lever rotating around a fourth axis, one end of the lever is transmission-connected to the pushing member, and the other end of the lever is connected to the locking pin; the lever is constructed so that when the pushing member is inserted into any groove, the lever is driven by the pushing member to rotate around the fourth axis to drive the locking pin to move relative to the main body, so that when the pushing member abuts against the bottom surface of any groove, the locking pin is slidably engaged with the bottom surface of the corresponding sliding groove; the fourth axis is not arranged in parallel with the third axis.

[0011] In one of the embodiments, the second axis is arranged parallel to the plane where the cutting member is located; and the end of the lever away from the locking pin is transmission-connected to the pushing member via an inclined wedge structure.

[0012] In one embodiment, the locking mechanism also includes a locking pin reset spring, which elastically presses between the main body and the locking pin, and applies an elastic force to the locking pin toward the bottom surface of the groove close to the slide groove; the third axis is arranged perpendicular to the plane where the cutting piece is located.

[0013] In one embodiment, a plurality of slide grooves are spaced apart and parallel to the plane where the cutting member is located, and the extension lengths of each slide groove are different from each other; the locking pin can rotate around a third axis, and the locking pin is constructed so that when the pushing member is inserted into any groove, the locking pin can rotate around the third axis driven by the pushing member, so that the locking pin can slideably engage with the corresponding slide groove.

[0014] In one embodiment, the trigger has a use position and a safety position. In the use position, the trigger can freely trigger the switch, and in the safety position, the trigger cannot trigger the switch. When the push member is outside the groove, the push member abuts against the trigger to limit the trigger to the safety position. When the push member is stuck in at least one groove, the push member deviates from the trigger to allow the trigger to switch from the safety position to the use position.

[0015] In one embodiment, the fixing portion includes a base plate placed above the workpiece and a shield vertically fixed to the base plate, a spring is provided between the main body and the base plate, and the spring biases the main body in a direction away from the base plate; the adjustment slot includes three slide slots, and the three slide slots are respectively a first slide slot, a second slide slot and a third slide slot; the cutting machine has a slotting mode, a cutting piece replacement mode and a maximum cutting depth mode; in the slotting mode, the locking pin is slidably connected to the first slide slot; in the cutting piece replacement mode, the locking pin is slidably connected to the second slide slot; in the maximum cutting depth mode, the locking pin is slidably connected to the third slide slot; wherein, in the initial position, the cutting piece is accommodated in the shield, and in the slotting mode, the cutting piece replacement mode and the maximum cutting depth mode, the distance that the cutting piece protrudes from the base plate gradually increases. [Drawings]

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the cutting machine provided in an embodiment of the present application in an initial position.

[0018] Figure 2 for Figure 1 Schematic diagram of the position of the cutting member in the illustrated embodiment in the initial position, the slotting mode, the cutting member replacement mode and the maximum cutting depth mode.

[0019] Figure 3 for Figure 1 A schematic diagram of a portion of the structure of the fixing portion in the illustrated embodiment.

[0020] Figure 4 for Figure 1 A schematic diagram of the partial structure of the fixing portion in the illustrated embodiment from another viewing angle.

[0021] Figure 5 for Figure 1 Schematic diagram of the assembly state of the locking mechanism, switch and trigger in the illustrated embodiment.

[0022] Figure 6 for Figure 1 A schematic diagram of the assembly state of the locking mechanism, switch and trigger in the illustrated embodiment from another perspective.

[0023] Figure 7 for Figure 1 A schematic diagram of the structure of the gear selection member in the illustrated embodiment.

[0024] Figure 8for Figure 1 Front view of the gear selector in the illustrated embodiment.

[0025] Fig. 9 for Figure 1 A schematic structural diagram of a pusher in the illustrated embodiment.

[0026] Fig.10 for Fig. 9 A schematic diagram of the structure of the pushing member in the illustrated embodiment from another viewing angle.

[0027] Fig.11 for Figure 1 A schematic diagram of the structure of the lever in the illustrated embodiment.

[0028] Fig.12 for Figure 1 A schematic diagram of the structure of the lever in the illustrated embodiment from another perspective.

[0029] Fig.13 for Figure 1 A schematic diagram of the structure of the trigger in the illustrated embodiment.

[0030] Fig.14 for Figure 1 A schematic diagram of a portion of the structure of the trigger of the cutting machine in the illustrated embodiment in the use position.

[0031] Fig.15 for Figure 1 A schematic diagram of a portion of the structure of the trigger of the cutting machine in the illustrated embodiment is shown in a safe position.

[0032] Fig.16 for Figure 1 A schematic diagram of the internal structure of the cutting machine in the illustrated embodiment in the initial position.

[0033] Fig.17 for Fig.16 A cross-sectional view of the cutting machine along line AA in the illustrated embodiment.

[0034] Fig.18 for Figure 1 Schematic diagram of the internal structure of the cutting machine in the embodiment shown in the slotting mode.

[0035] Fig.19 for Fig.18 A cross-sectional view of the cutting machine along line BB in the illustrated embodiment.

[0036] Fig. 20 for Figure 1 A schematic diagram of the internal structure of the cutting machine in the illustrated embodiment in a cutting element replacement mode.

[0037] Fig.21 for Fig. 20A cross-sectional view of the cutting machine along line CC in the illustrated embodiment.

[0038] Fig. 22 for Fig. 20 A cross-sectional view of the cutting machine in the illustrated embodiment during replacement of the cutting element.

[0039] Fig.23 for Figure 1 The internal structure diagram of the cutting machine in the embodiment shown is in the maximum cutting depth mode.

[0040] Fig.24 for Fig.23 A cross-sectional view of the cutting machine along line DD in the illustrated embodiment.

[0041] Fig.25 This is a schematic structural diagram of a cutting machine according to another embodiment of the present application.

[0042] Fig.26 for Fig.25 A schematic diagram of a portion of the structure of the fixing portion in the illustrated embodiment.

[0043] Fig. 27 for Fig.25 Schematic diagram of the assembly state of the locking mechanism, switch and trigger in the illustrated embodiment.

[0044] Fig.28 for Fig. 27 A schematic diagram of the assembly state of the locking mechanism, switch and trigger in the illustrated embodiment from another perspective.

[0045] Description of main component symbols:

[0046] Cutting machine-100, 100X; fixing part-10, 10X; adjusting groove-11, 11X; sliding groove-111, 111X; first sliding groove-111a; second sliding groove-111b; third sliding groove-111c; limiting hole-112; first limiting hole-112a; second limiting hole-112b; connecting groove-113; first limiting groove-114; second limiting groove-115; shield-13; main body-20; cutting member-30; locking mechanism-40, 40X; gear selection member-41; groove-411; pushing member-42, 42X; pushing part 420; first convex part-421 (against trigger 60); second convex part-422 (against lever 45); third convex part-423 (snaps into groove 411); pushing member reset torsion spring-425 ( Figure 6); locking pin-43, 43X; gear knob-44; lever-45; first arm-451; second arm-452; locking pin return spring-46; switch-50; trigger-60; trigger return spring-61; trigger protrusion-62; output shaft-80; shaft locking plate-81; first axis-a; second axis-b; third axis-c; fourth axis-d; fifth axis-e; initial position-W1; slotting mode-W2; cutting piece replacement mode-W3; maximum cutting depth mode-W4. [Specific implementation method]

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0048] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a centered element. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be a centered element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0050] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0051] Figure 1 It is a structural schematic diagram of the cutting machine 100 provided in an embodiment of the present application at an initial position W1; Figure 2 for Figure 1 Schematic diagram of the positions of the cutting member 30 in the illustrated embodiment in the initial position W1, the slotting mode W2, the cutting member replacement mode W3 and the maximum cutting depth mode W4; Figure 3 for Figure 1 A schematic diagram of a portion of the structure of the fixing portion 10 in the illustrated embodiment; Figure 4 for Figure 1 A schematic diagram of a portion of the structure of the fixing portion 10 in the illustrated embodiment at another viewing angle; Figure 5 for Figure 1 A schematic diagram of the assembly state of the locking mechanism 40, the switch 50 and the trigger 60 in the illustrated embodiment; Figure 6 for Figure 1 A schematic diagram of the assembly state of the locking mechanism 40, the switch 50 and the trigger 60 in the illustrated embodiment from another viewing angle; Figure 7 for Figure 1 A schematic diagram of the structure of the gear selection member 41 in the illustrated embodiment; Figure 8 for Figure 1 A front view of the gear selector 41 in the illustrated embodiment; Fig. 9 for Figure 1 A schematic diagram of the structure of the pusher 42 in the illustrated embodiment; Fig.10 for Fig. 9 The schematic diagram of the structure of the pushing member 42 in the illustrated embodiment is shown in another perspective.

[0052] See also Figure 1 and Figure 2 The present embodiment provides a cutting machine 100, comprising a fixing portion 10 and a main body portion 20 pivotally connected to the fixing portion 10, wherein the main body portion 20 is provided with a driving mechanism (not shown), a cutting member 30 drivingly connected to an output shaft 80 of the driving mechanism, and a switch 50 electrically connected to the driving mechanism (see Figure 5 and Figure 6 ).like Figure 3 and Figure 4 As shown, the fixing portion 10 is provided with an adjustment slot 11, and the adjustment slot 11 includes a plurality of slide slots 111. The main body 20 is also provided with a trigger 60 capable of triggering or releasing the switch 50. The cutting machine 100 also includes a locking mechanism 40, and the locking mechanism 40 includes a gear selection member 41 rotating around a first axis a, a push member 42 rotating around a second axis b, and a locking pin 43. Figure 7 and Figure 8 As shown, the gear selection member 41 is provided with a groove 411 for limiting the maximum rotation position of the push member 42. The groove 411 is provided with a plurality of grooves 411 spaced apart along the circumference and the recessed depths of the plurality of grooves 411 are not equal. The push member 42 (see Fig. 9 and Fig.10 ) can be inserted into different grooves 411 according to different rotation angles of the gear selection member 41. The locking pin 43 is transmission-connected to the push member 42. When the push member 42 is inserted into different grooves 411, the locking pin 43 is matched with different slide slots 111 to allow the cutting member 30 to pivot to different positions relative to the fixing portion 10.

[0053] In the above-mentioned cutting machine 100, the main body 20 can drive the cutting member 30 to pivot to different positions relative to the fixed part 10, so that the cutting machine 100 can be in different modes, and the switching between different modes can be achieved through the locking mechanism 40. A plurality of slide grooves 111 are provided on the fixed part 10, so that when the locking pin 43 cooperates with any one of the slide grooves 111, the locking pin 43 is limited by the slide grooves 111, thereby limiting the range of the main body 20 and the cutting member 30 pivoting relative to the fixed part 10. In order to facilitate the switching of the locking pin 43 between the positions that cooperate with different slide grooves 111, a plurality of grooves 411 are provided on the gear selection member 41, and the push member 42 can be respectively inserted into the plurality of grooves 411, so that the rotation angle of the push member 42 around the second axis b is limited by the recessed depth of the grooves 411. When the pusher 42 abuts against the bottom surface of different grooves 411, the pusher 42 drives the locking pin 43 to move to a position matching with different slide grooves 111, thereby allowing the main body 20 to drive the cutting member 30 to pivot to different positions relative to the fixing portion 10. Since a plurality of grooves 411 are arranged at intervals along the circumference of the gear selection member 41, when the cutting machine 100 needs to be switched between different modes, the gear selection member 41 is first rotated around the first axis a, and then the pusher 42 is pushed around the second axis b toward the side close to the gear selection member 41 to engage in different grooves 411, thereby realizing fast switching of different modes, facilitating operation, and having a simple structure.

[0054] It should be noted that a cutting machine is provided in the related art, and the pushing member needs to be rotated in different directions when switching to different modes, which causes inconvenience in operation. In the above embodiment, when it is necessary to switch to any mode, the pushing member 42 is pushed toward the side close to the gear selection member 41, that is, the gear selection member 41 rotates in the same direction, which is convenient for operation.

[0055] When in use, the cutting machine 100 is first placed in the initial position W1, and then the gear selection member 41 is operated to rotate around the first axis a according to the need for the mode, so that the push member 42 is aligned with the groove 411 corresponding to the required mode, and then the push member 42 is pushed into the groove 411 around the second axis b until the push member 42 abuts against the groove bottom surface of the corresponding groove 411. At this time, driven by the push member 42, the locking pin 43 moves to a position where it can contact the groove bottom surface of the corresponding slide groove 111. In this way, the main body 20 is allowed to drive the cutting member 30 to press down relative to the fixed part 10, and in the process of the main body 20 driving the cutting member 30 to press down relative to the fixed part 10, the locking pin 43 can slide on the groove bottom surface of the corresponding slide groove 111.

[0056] Please combine Fig. 9 and Fig.10As shown, the pusher 42 includes a pusher portion 420 protruding from the housing of the main body 20, and the user can manually push the pusher portion 420 to rotate the pusher 42 around the second axis b. The pusher 42 is also provided with a first protrusion 421 for abutting against the trigger 60, a second protrusion 422 for abutting against the lever 45, and a third protrusion 423 for engaging in the groove 411 of the gear selection member 41. In order to enable the pusher 42 to return to its original position quickly when the user releases the pusher 42, a pusher return torsion spring 425 is additionally provided on the pusher 42.

[0057] In some embodiments, Figure 1 As shown, the locking mechanism 40 also includes a gear knob 44, which is arranged outside the main body 20 and coaxially arranged with the gear selector 41. The gear knob 44 is connected to the gear selector 41 and is configured to drive the gear selector 41 to rotate together. In this way, it is convenient to operate the gear knob 44 outside the main body 20, thereby driving the gear selector 41 to rotate. Optionally, the gear knob 44 is sleeved outside the gear selector 41. A gear mark is provided on the outer surface of the main body 20 to visualize the mode switching, facilitate users to quickly get started, and improve the convenience of operation. When the gear knob 44 drives the gear selector 41 to switch modes, the gear knob 44 is configured to provide sound feedback and tactile feedback.

[0058] In some embodiments, Figures 5 to 7 As shown, the second axis b is arranged parallel to the first axis a, and the concave direction of the groove 411 is perpendicular to the second axis b. In this way, the gear selection member 41 and the push member 42 can be arranged on a plane perpendicular to the first axis a, which is conducive to reducing the space occupied by the gear selection member 41 and the push member 42 in the extension direction of the first axis a. Optionally, the first axis a and the second axis b are both aligned with the cutting member 30 (see Figure 2 ) is perpendicular to the plane in which it lies.

[0059] Alternatively, if Figure 1 and Figure 2 As shown, the push member 42 is away from the groove 411 (see Figure 5 ) protrudes from the main body 20, so as to apply an external force to the portion of the push member 42 exposed from the main body 20, so that the push member 42 rotates toward the direction close to the gear selection member 41. The gear selection member 41 is away from the groove 411 (see Figure 5 ) is located at a side of the main body 20 away from the fixing part 10, and is connected to the gear knob 44. In other embodiments, an end of the gear selection member 41 away from the groove 411 is located at a side of the main body 20 close to the fixing part 10 (not shown).

[0060] In some embodiments, Figure 3 and Figure 4 As shown, the depths of the plurality of slide grooves 111 are not equal to each other. Figure 1 As shown, the locking pin 43 can move along the third axis c, and the locking pin 43 is configured to move along the third axis c when the pusher 42 is inserted into any groove 411, driven by the pusher 42, so that the locking pin 43 can slidably fit with the bottom surface of the corresponding slide groove 111. In this way, the distance that the locking pin 43 moves along the third axis c corresponds to the groove depth of different slide grooves 111, so that the locking pin 43 can contact the bottom surfaces of different slide grooves 111 with a relatively simple structure.

[0061] In some embodiments, Figure 3 and Figure 4 As shown, the adjustment slot 11 extends along an arc or a straight line, and a plurality of slide grooves 111 are distributed along the extension direction of the adjustment slot 11, and from one end to the other end of the adjustment slot 11, the depth of the inward depression of different slide grooves 111 decreases successively. Figure 5 ) When the locking pin 43 is matched with the shallower groove 111, the locking pin 43 can slide on the bottom surface of the shallower groove 111, and can also be rotated to the position of the deeper groove 111. Therefore, the movement stroke of the locking pin 43 in different modes is partially overlapped, which is beneficial to reduce the occupied area of ​​the adjustment groove 11 on the main body 20 and simplify the structure of the adjustment groove 11.

[0062] Optionally, combined Figures 1 to 3 As shown, along the protruding direction of the cutting member 30 relative to the fixing portion 10, the groove depth from one end to the other end of the adjusting groove 11 gradually decreases, so that when the locking pin 43 is matched with the slide groove 111 with a shallower groove depth, the cutting member 30 protrudes from the fixing portion 10 by a greater distance, and when the locking pin 43 is matched with the slide groove 111 with a deeper groove depth, the cutting member 30 protrudes from the fixing portion 10 by a smaller distance. In this way, since the locking pin 43 cannot move to the position of the slide groove 111 with a shallower groove depth when it is matched with the slide groove 111 with a deeper groove depth, the cutting member 30 can be limited to a range of a smaller protruding distance relative to the fixing portion 10.

[0063] Fig.11 for Figure 1 A schematic diagram of the structure of the lever 45 in the illustrated embodiment; Fig.12 for Figure 1 The schematic diagram of the structure of the lever 45 in the illustrated embodiment is shown in another perspective.

[0064] In some embodiments, Fig.11 and Fig.12 As shown, the locking mechanism 40 further includes a lever 45 that rotates about a fourth axis d. Figure 5 and Figure 6As shown, one end of the lever 45 is connected to the pusher 42, and the other end of the lever 45 is connected to the locking pin 43; specifically, the lever 45 includes a first arm 451 and a second arm 452 respectively arranged on both sides of the fourth axis d, the end of the first arm 451 is provided with a wedge structure, the wedge structure is in contact with the second protrusion 422 of the pusher 42, and the end of the second arm 452 is used to penetrate the locking pin 43. The lever 45 is constructed so that when the pusher 42 is inserted into any groove 411, the lever 45 is driven by the pusher 42 to rotate around the fourth axis d, so as to drive the locking pin 43 relative to the main body 20 (see Figure 1 ) so that when the pusher 42 abuts against the bottom surface of any groove 411, the locking pin 43 can be slidably matched with the bottom surface of the corresponding groove 111. The fourth axis d is not arranged in parallel with the third axis c. In this way, by setting the lever 45, the movement of the pusher 42 is transmitted to the locking pin 43, and the lever 45 is also used to facilitate the movement direction of the locking pin 43 to be different from the movement direction of the pusher 42, so that it is more suitable for the arrangement of the main body 20 and the fixing part 10.

[0065] In some embodiments, Figure 5 As shown, the second axis b is parallel to the cutting member 30 (see Figure 1 ) is arranged in the plane where the lever 45 is located, and the end of the lever 45 away from the locking pin 43 is connected to the pushing member 42 through a wedge structure to achieve transmission connection.

[0066] In some embodiments, the locking mechanism 40 further includes a locking pin reset spring 46, which elastically abuts between the main body 20 and the locking pin 43, and applies an elastic force to the locking pin 43 toward the side of the bottom surface of the groove close to the slide groove 111. The third axis c is arranged perpendicular to the plane where the cutting member 30 is located. In this way, when the pusher 42 is pressed into the groove 411, the pusher 42 drives the locking pin 43 to lift toward the side away from the slide groove 111, and when the pusher 42 is released, that is, the force of the pusher 42 on the locking pin 43 is released, the locking pin 43 falls toward the side close to the slide groove 111 under the elastic force of the locking pin reset spring 46.

[0067] In some embodiments, the end of at least one slide groove 111 is concave to form a limiting hole 112, and the locking pin 43 can extend into and be limited in the limiting hole 112, so that the main body 20 cannot pivot relative to the fixing part 10, that is, the cutting member 30 is locked relative to the fixing part 10. For example, the limiting hole 112 can limit the cutting member 30 to the initial position W1, or limit the cutting member 30 to the replacement position, and the replacement position is used to replace the cutting member 30. Optionally, the recessed depth of the limiting hole 112 is 9 mm. The aperture of the limiting hole 112 is greater than or equal to the outer diameter of the locking pin 43.

[0068] Fig.13 for Figure 1 A schematic diagram of the structure of the trigger 60 in the illustrated embodiment; Fig.14 for Figure 1 A schematic diagram of a portion of the structure of the cutting machine 100 in the illustrated embodiment in the use position; Fig.15 for Figure 1 A schematic diagram of a portion of the structure of the cutting machine 100 in the illustrated embodiment in a safe position.

[0069] In some embodiments, Figures 13 to 15 As shown, the trigger 60 has a use position and a safety position. In the use position (see Fig.14 ) The trigger 60 triggers the switch 50, which is in the safety position (see Fig.15 ) The trigger 60 cannot trigger the switch 50. When the push member 42 is located in the groove 411 (see Figure 8 ), the first protrusion 421 of the push member 42 abuts against the trigger protrusion 62 of the trigger 60 to limit the trigger 60 to the safe position. When the push member 42 extends into at least one groove 411, the push member 42 deviates from the trigger 60 to allow the trigger 60 to switch from the safe position to the use position. In this way, the trigger 60 is locked or unlocked by the push member 42. When in use, the trigger 60 is allowed to be unlocked from the safe position only after the push member 42 is pushed into the groove 411, so that the trigger 60 can be operated to trigger the switch 50, so that the drive mechanism drives the cutting member 30 (see Figure 2 When the push member 42 is not inserted into the groove 411, the push member 42 locks the trigger 60 in a safe position to prevent the drive mechanism from being accidentally started.

[0070] In some embodiments, in combination Fig.13 and Fig.14 As shown, the trigger 60 is a rotating trigger, that is, the trigger 60 is rotatably arranged on the main body 20 around the fifth axis e (see Figure 2 ), to switch between the use position and the safety position, the trigger 60 is reset by the trigger reset spring 61. In other embodiments, the trigger 60 is a sliding trigger, that is, the trigger 60 can move relative to the main body 20 to switch between the use position and the safety position (not shown).

[0071] In some embodiments, Figure 1 As shown, the driving mechanism includes a motor (not shown), the main body 20 includes a motor housing (not shown) and a handle housing, the motor is arranged in the motor housing, the output shaft 80 of the motor drives the reduction gear to rotate, the gear transmission connects the cutting piece 30, and the handle housing is connected to the motor housing, so that the main body 20 can be driven to pivot relative to the fixed part 10 by holding the handle housing.

[0072] In some embodiments, Figure 1As shown, the fixing part 10 includes a bottom plate (not shown) placed above the workpiece and a shield 13 vertically fixed on the bottom plate. A spring (not shown) is provided between the main body 20 and the bottom plate, and the spring biases the main body 20 in a direction away from the bottom plate. Figure 3 and Figure 4 As shown, the adjustment slot 11 includes three slide slots 111, which are respectively a first slide slot 111a, a second slide slot 111b and a third slide slot 111c. Figure 2 As shown, the cutting machine 100 has a slotting mode W2, a cutting piece replacement mode W3 and a maximum cutting depth mode W4. In the slotting mode W2, the locking pin 43 is slidably connected to the first slide groove 111a. In the cutting piece replacement mode W3, the locking pin 43 is slidably connected to the second slide groove 111b. In the maximum cutting depth mode W4, the locking pin 43 is slidably connected to the third slide groove 111c. Among them, in the initial position W1, the cutting piece 30 is accommodated in the shield 13, and in the slotting mode W2, the cutting piece replacement mode W3 and the maximum cutting depth mode W4, the distance that the cutting piece 30 protrudes from the base plate gradually increases.

[0073] Thus, in the slotting mode W2, the locking pin 43 can slide on the bottom surface of the first slot 111a. Since the slot depth of the first slot 111a is the smallest, the locking pin 43 is limited to the first slot 111a through the step surface between the second slot 111b and the first slot 111a, thereby limiting the distance of the cutting member 30 protruding from the bottom plate to a smaller numerical range; the slotting mode W2 is used to pre-cut a shallow slot on the workpiece to prevent burrs from being generated during formal cutting. In the cutting member replacement mode W3, the locking pin 43 can slide on the bottom surface of the second slot 111b; since the slot depth of the second slot 111b is greater than the slot depth of the third slot 111c, the locking pin 43 is prevented from entering the third slot 111c through the step surface between the third slot 111c and the second slot 111b, thereby limiting the cutting member 30 to a position that is convenient for replacing the cutting member 30. In the maximum cutting depth mode W4, the locking pin 43 can slide on the bottom surface of the third slide groove 111c, so that the cutting member 30 can protrude a greater distance from the bottom plate, and the main body 20 can drive the cutting member 30 to be pressed down relative to the fixed part 10 to the maximum cutting depth of the cutting machine 100.

[0074] Optionally, the groove depth of the first chute 111a is 7 mm, the groove depth of the second chute 111b is 5 mm, and the groove depth of the third chute 111c is 3 mm. It should be noted that the depth of the multiple chute 111 and the number of chute 111 can be set in other ways according to the needs of use, wherein the number of chute 111 is equal to the number of grooves 411 and the number of modes and corresponds one to one. In this embodiment, the cutting machine 100 has three modes: grooving mode W2, cutting piece replacement mode W3 and maximum cutting depth mode W4. In other embodiments, the cutting machine 100 may also have two or more modes.

[0075] Fig.16 for Figure 1 A schematic diagram of the internal structure of the cutting machine 100 in the illustrated embodiment at the initial position W1; Fig.17 for Fig.16 The cutting machine 100 in the illustrated embodiment is a cross-sectional view taken along line AA.

[0076] In some embodiments, Figure 3 and Figure 4 As shown, the limiting hole 112 includes a first limiting hole 112a, and the bottom surface of the first slide groove 111a away from the second slide groove 111b is recessed inward to form the first limiting hole 112a. Fig.16 and Fig.17 As shown, in the initial position W1, the locking pin 43 extends into the first limiting hole 112a. In this way, since the depth of the first limiting hole 112a is greater than the groove depth of the first sliding groove 111a, when the locking pin 43 moves to the position of the first limiting hole 112a and the force of the pusher 42 on the locking pin 43 is released, the locking pin 43 extends into and is limited in the first limiting hole 112a under the elastic force of the locking pin return spring 46, so that the main body 20 and the cutting member 30 are locked relative to the fixing part 10 at the initial position W1.

[0077] During use, when the cutting machine 100 needs to be switched from the initial position W1 to any mode, the pushing member 42 is first inserted into the groove 411 to drive the locking pin 43 to be lifted outward from the first limiting hole 112a, thereby allowing the main body 20 to pivot relative to the fixed part 10, and according to the pushing stroke of the pushing member 42, the locking pin 43 is lifted to a height corresponding to the pushing stroke, so that the locking pin 43 can slide on the bottom surface of the slide groove 111 of the corresponding groove depth. At this time, the cutting machine 100 is in the corresponding mode. Since the first limiting hole 112a is located in the first slide groove 111a, and the groove depth of the first slide groove 111a is the deepest, when the cutting member 30 needs to return from one mode to the initial position W1, the locking pin 43 can return from the matching slide groove 111 to the position of the first limiting hole 112a. At this time, the push member 42 is released, so that the locking pin 43 extends into and is limited to the first limiting hole 112a under the elastic force of the locking pin return spring 46, so that the cutting member 30 is limited to the initial position W1. It should be noted that when switching between different modes, it is necessary to return to the initial position W1 first, and then rotate the gear selection member 41 again at the initial position W1 to align the pushing member 42 with another groove 411, and then press the pushing member 42 to snap into the groove 411, so as to allow the fixing part 10 to drive the cutting member 30 to switch from the initial position W1 to another mode.

[0078] Fig.18 for Figure 1 A schematic diagram of the internal structure of the cutting machine 100 in the illustrated embodiment in the slotting mode W2; Fig.19 for Fig.18 The cutting machine 100 in the illustrated embodiment is a cross-sectional view taken along line BB.

[0079] The cutting machine 100, as Fig.18 and Fig.19 As shown, when it is necessary to switch to the slotting mode W2, first adjust the gear selection member 41 to the slotting mode W2, and then push the push member 42 to release the trigger 60, that is, allow the trigger 60 to switch from the safety position to the use position. Figure 8 ) when the bottom surface of the groove of the trigger 60 is pressed against the bottom surface of the groove of the trigger 60, the trigger 60 can be pressed to start the driving mechanism. Figure 3 and Figure 4 As shown, the locking pin 43 can slide along the first slide groove 111a until it abuts against the step surface between the first slide groove 111a and the second slide groove 111b, and the cutting machine 100 can perform a slotting operation on the workpiece. After the slotting is completed, the main body 20 is first returned to the initial position W1 (see Fig.16 ), and then release the push member 42 to lock the cutting machine 100 at the initial position W1. It should be noted that the push member 42 can also be released during the slotting process.

[0080] Fig. 20for Figure 1 A schematic diagram of the internal structure of the cutting machine 100 in the illustrated embodiment in the cutting piece replacement mode W3; Fig.21 for Fig. 20 A cross-sectional view of the cutting machine 100 along line CC in the illustrated embodiment; Fig. 22 for Fig. 20 The cutter 100 of the illustrated embodiment is a cross-sectional view in a replacement position.

[0081] In some embodiments, Figure 3 and Figure 4 As shown, the limiting hole 112 further includes a second limiting hole 112b, and the bottom surface of the second slide groove 111b at one end away from the first slide groove 111a is recessed inward to form the second limiting hole 112b. Figure 20 to Figure 22 As shown, in the replacement position, the locking pin 43 extends into the second limiting hole 112b. In this way, in the cutting piece replacement mode W3, the locking pin 43 can slide on the bottom surface of the second sliding groove 111b.

[0082] When in use, when the locking pin 43 slides on the bottom surface of the second slide groove 111b to abut against the step surface between the second slide groove 111b and the third slide groove 111c, the pusher 42 is released, and under the elastic force of the locking pin reset spring 46, the locking pin 43 extends into and is limited in the second limit hole 112b, thereby limiting the cutting member 30 to the replacement position, locking the main body 20 relative to the fixed part 10, and locking the trigger 60 in a safe position through the pusher 42, thereby ensuring the safety when replacing the cutting member 30. Then the user can press or operate the shaft locking piece 81 to lock the output shaft 80, the cutting member 30 cannot rotate freely, the main body 20 cannot pivot relative to the fixed part 10, and the trigger 60 cannot be pressed.

[0083] Fig.23 for Figure 1 The internal structure diagram of the cutting machine 100 in the illustrated embodiment in the maximum cutting depth mode W4; Fig.24 for Fig.23 The cutting machine 100 in the illustrated embodiment is a cross-sectional view taken along line DD.

[0084] The cutting machine 100, as Fig.23 and Fig.24 As shown, when it is necessary to switch to the maximum cutting depth mode W4, the gear selection member 41 is rotated to the maximum cutting depth mode W4, and then the push member 42 is pressed to the current maximum stroke, that is, the push member 42 is aligned with the corresponding groove 411 (see Figure 8 ) of the groove bottom. Figure 3 As shown, at this time, the locking pin 43 can slide on the bottom surface of the third sliding groove 111c, and the cutting member 30 can cut to any depth within the range of the cutting machine 100.

[0085] Fig.25 is a structural schematic diagram of a cutting machine 100X in another embodiment of the present application; Fig.26 for Fig.25 A schematic diagram of a portion of the structure of the fixing portion 10X in the illustrated embodiment; Fig. 27 for Fig.25 A schematic diagram of the assembly state of the locking mechanism 40X, the switch 50 and the trigger 60 in the illustrated embodiment; Fig.28 for Fig. 27 A schematic diagram of the assembly state of the locking mechanism 40X, the switch 50 and the trigger 60 in the illustrated embodiment from another perspective.

[0086] See also Figure 25 to Figure 27 The cutting machine 100X in the second embodiment is substantially the same as the cutting machine 100 in the first embodiment, except that the structure of the slide groove 111X is different and the structure of the locking pin 43X is different. The plurality of slide grooves 111X are spaced apart on the plane where the cutting member 30 is located, and the extension lengths of each slide groove 111X on the plane where the cutting member 30 is located are not equal. The locking pin 43X can rotate around the third axis c, and the locking pin 43X is configured to rotate around the third axis c (see FIG. 1 ) when the push member 42X is inserted into any groove 411. Fig.28 ) is rotated, so that the locking pin 43X can be slidably matched with the bottom surface of the corresponding slide groove 111X. In this way, the maximum pushing stroke of the pushing member 42X is limited by the rotation change of the gear selection member 41, so that the pushing member 42X drives one end of the locking pin 43X to rotate through the corresponding rotation stroke under the maximum pushing stroke, so that the other end of the locking pin 43X falls into the corresponding slide groove 111X, so that the cutting machine 100X is in the corresponding mode. Since the extension lengths of different slide grooves 111X are different, the cutting member 30 is allowed to pivot to different positions relative to the fixing part 10 in different modes. In the second embodiment, the pushing member 42X is directly connected to the locking pin 43X by transmission, thereby simplifying the structure of the locking mechanism 40X. Optionally, the extension directions of the multiple slide grooves 111X are roughly parallel.

[0087] In some embodiments, Fig.26As shown, the adjustment slot 11X also includes a connecting slot 113, the extension direction of the connecting slot 113 intersects with the extension direction of the plurality of slide slots 111X, and the connecting slot 113 connects the plurality of slide slots 111X, and the connecting slot 113 is arranged near one end of the plurality of slide slots 111X away from the bottom plate. One end of the connecting slot 113 is located outside the plurality of slide slots 111X and forms a first limiting slot 114, and in the initial position W1, the locking pin 43X is limited in the first limiting slot 114. When in use, when the cutting machine 100X switches from the initial position W1 to any mode, the locking pin 43 first enters the connecting slot 113 from the first limiting slot 114, and then enters the slide slot 111X corresponding to the mode through the connecting slot 113. When the cutting machine 100X needs to switch from this mode to another mode, the locking pin 43X first returns to the connecting slot 113 along the slide slot 111X, and then enters another slide slot 111X through the connecting slot 113 to achieve mode switching.

[0088] In some embodiments, Figure 26 to Figure 28 As shown, there are three slide grooves 111X, which are the first slide groove 111a, the second slide groove 111b and the third slide groove 111c. The extension length of the second slide groove 111b is greater than the extension length of the first slide groove 111a, and less than the extension length of the third slide groove 111c. In the slotting mode W2, the locking pin 43X is slidably connected to the first slide groove 111a; in the cutting piece replacement mode W3, the locking pin 43X is slidably connected to the second slide groove 111b; in the maximum cutting depth mode W4, the locking pin 43X is slidably connected to the third slide groove 111c.

[0089] In some embodiments, Fig.26 As shown, the adjustment slot 11X also includes a second limiting slot 115, the extension direction of the second limiting slot 115 intersects with the extension direction of the second slide slot 111b, and the second limiting slot 115 is connected to the end of the second slide slot 111b away from the connecting slot 113. In the cutting member replacement mode, the pusher 42X is released, and under the action of the pusher reset torsion spring 425, the pusher 42X is reset toward the trigger 60, and the trigger 60 is in a locked position to prevent accidental triggering; at the same time, the pusher 42X directly drives the locking pin 43X (see Fig. 27 ) is limited in the second limiting groove 115 so that the main body 20 (see Fig.25 ) is locked relative to the fixing portion 10, thereby facilitating the replacement of the cutting member 30.

[0090] The above-mentioned cutting machine 100, 100X can allow the main body 20 to drive the cutting member 30 to pivot to different positions relative to the fixing part 10 by the operator pushing and inserting the pushing member 42, 42X into different grooves 411 of the gear selection member 41, that is, changing the cutting depth mode of the cutting machine 100, 100X. Since the mode is switched only by rotating the gear selection member 41 and inserting the pushing member 42, 42X into the corresponding groove 411, the cutting machine 100 can be conveniently and quickly adjusted to different cutting depth modes.

[0091] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A cutting machine, comprising a fixing portion, a main body portion pivotally connected to the fixing portion, a driving mechanism provided on the main body portion, a cutting member rotationally driven by the driving mechanism, and a switch electrically connected to the driving mechanism, wherein the main body portion is further provided with a trigger capable of triggering or releasing the switch; characterized in that: The fixing part is provided with an adjusting groove, and the adjusting groove includes a plurality of slide grooves; the cutting machine also includes a locking mechanism, and the locking mechanism includes a gear selection member rotating around a first axis, a pushing member rotating around a second axis and a locking pin engaged with the slide groove; the gear selection member is provided with a groove for limiting the maximum rotation position of the pushing member, and a plurality of grooves are circumferentially spaced around the first axis, and the recessed depths of the plurality of grooves are unequal, and the pushing member can be inserted into different grooves according to different rotation angles of the gear selection member; the locking pin is transmission-connected to the pushing member, and when the pushing member cooperates with different grooves, the pushing member has different maximum rotation positions, and the locking pin cooperates with different slide grooves to allow the cutting member to pivot to different positions relative to the fixing part.

2. The cutting machine according to claim 1, characterized in that: The second axis is arranged in parallel with the first axis, and the concave direction of the groove is perpendicular to the second axis.

3. The cutting machine according to claim 1 or 2, characterized in that: The depths of the multiple slide grooves are not equal; the locking pin moves along the third axis, and the locking pin is constructed so that when the pushing member is inserted into any one of the grooves, the locking pin moves along the third axis driven by the pushing member, so that the locking pin slides and fits with the bottom surface of the corresponding slide groove.

4. The cutting machine according to claim 3, characterized in that: The adjustment groove extends along an arc or a straight line, and a plurality of the slide grooves are distributed along the extension direction of the adjustment groove, and the groove depths of different slide grooves decrease successively from one end to the other end of the adjustment groove.

5. The cutting machine according to claim 3, characterized in that: The locking mechanism also includes a lever rotating around a fourth axis, one end of the lever is transmission-connected to the pushing member, and the other end of the lever is connected to the locking pin; the lever is constructed so that when the pushing member is inserted into any one of the grooves, the lever is driven by the pushing member to rotate around the fourth axis to drive the locking pin to move relative to the main body, so that when the pushing member abuts against the bottom surface of any one of the grooves, the locking pin is slidably engaged with the bottom surface of the corresponding sliding groove; the fourth axis is not arranged in parallel with the third axis.

6. The cutting machine according to claim 5, characterized in that: The second axis is arranged parallel to the plane where the cutting member is located; the end of the lever away from the locking pin is transmission-connected with the pushing member via an inclined wedge structure.

7. The cutting machine according to claim 3, characterized in that: The locking mechanism also includes a locking pin reset spring, which elastically presses between the main body and the locking pin, and applies an elastic force to the locking pin toward the bottom surface of the groove close to the sliding groove; the third axis is arranged perpendicular to the plane where the cutting piece is located.

8. The cutting machine according to claim 1 or 2, characterized in that: The plurality of slide grooves are spaced apart and parallel to the plane where the cutting member is located, and the extension lengths of each slide groove are different from each other; the locking pin can rotate around a third axis, and the locking pin is constructed so that when the pushing member is inserted into any one of the grooves, the locking pin can rotate around the third axis driven by the pushing member, so that the locking pin can slideably engage with the corresponding slide groove.

9. The cutting machine according to claim 1, characterized in that: The trigger has a use position and a safety position. In the use position, the trigger can freely trigger the switch, and in the safety position, the trigger cannot trigger the switch. When the push member is outside the groove, the push member abuts against the trigger to limit the trigger to the safety position. When the push member is inserted into at least one of the grooves, the push member deviates from the trigger to allow the trigger to switch from the safety position to the use position.

10. The cutting machine according to claim 1, characterized in that: The fixing part includes a base plate placed above the workpiece and a shield vertically fixed on the base plate, a spring is provided between the main body and the base plate, and the spring biases the main body in a direction away from the base plate; the adjustment slot includes three slide slots, and the three slide slots are respectively a first slide slot, a second slide slot and a third slide slot; the cutting machine has a slotting mode, a cutting piece replacement mode and a maximum cutting depth mode; in the slotting mode, the locking pin is slidably connected to the first slide slot; in the cutting piece replacement mode, the locking pin is slidably connected to the second slide slot; in the maximum cutting depth mode, the locking pin is slidably connected to the third slide slot; wherein, in the initial position, the cutting piece is accommodated in the shield, and in the slotting mode, the cutting piece replacement mode and the maximum cutting depth mode, the distance that the cutting piece protrudes from the base plate gradually increases.

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