Cutting device

Abstract

A cutting device comprises a base, a machine frame fixed to the upper portion of the base and a cutting body supported on the machine frame, the cutting body comprises a supporting arm connected to the machine frame, the supporting arm pivots around the machine frame so that the cutting body can rotate downwards and cut a workpiece to be machined, and the cutting body has a locking state which is kept fixed relative to the base; the cutting device comprises a locking mechanism connected with the rack and the supporting arm, and the locking mechanism is configured to keep the cutting main body in a locked state; the locking mechanism comprises a locking rod movably connected to the rack and a locking piece installed on the supporting arm, the locking piece and the supporting arm move synchronously, and the locking rod is clamped to the locking piece. According to the arrangement, when the locking state of the cutting body needs to be relieved, only the cutting body needs to be pressed downwards, the locking piece synchronously moves downwards and is separated from the locking rod, unlocking can be achieved only with one hand, and operation is easy, convenient and fast.

Description

[Technical field]

[0001] The utility model relates to the technical field of cutting devices, in particular to a cutting device with a locking mechanism. [Background Technology]

[0002] The cutting device is mainly used for cutting non-ferrous metal profiles such as aluminum and materials such as wood, fiberboard, and plastic board. The cutting device usually includes a base placed on a working plane, a cutting body supported on the base, and a frame connecting the base and the cutting body. When cutting the workpiece, the operator presses the cutting body downward to perform the operation; when the cutting device needs to be moved or stored, a locking mechanism needs to be provided to keep the cutting body at a certain position above the base. Currently, the most common locking mechanism is a latch, which fixes the cutting body to the frame and keeps it stationary. However, when unlocking this locking mechanism, the operator needs to press the cutting body downward with one hand and pull out the latch with the other hand. Both hands are needed to complete the unlocking operation, which is inconvenient to operate.

[0003] In view of this, it is indeed necessary to provide an improved cutting device to overcome the defects of the prior art. [Contents of the utility model]

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a cutting device which can release the locking state conveniently and quickly.

[0005] The utility model adopts the following technical solution to solve the problems of the prior art: a cutting device, comprising a base, a frame fixed above the base and a cutting body supported by the frame, the cutting body comprising a support arm connected to the frame, the support arm pivots around the frame to allow the cutting body to rotate downward and cut the workpiece to be processed, the cutting body comprising a locking state that remains fixed relative to the base; the cutting device comprises a locking mechanism connecting the frame and the support arm, the locking mechanism is configured to keep the cutting body in the locked state; the locking mechanism comprises a locking rod movably connected to the frame and a locking piece mounted to the support arm, the locking piece moves synchronously with the support arm, and the locking rod is clamped on the locking piece.

[0006] A further improvement is that the cutting device includes a pivot shaft that passes through the frame in the transverse direction and a torsion spring that is sleeved on the outer circumference of the pivot shaft. In the locked state, the torsion spring and the locking rod work together to keep the cutting body in the locked state.

[0007] A further improved solution is: the locking rod includes a main body connected to the frame and a locking portion abutting against the locking member, and the locking member is clamped on the locking portion to keep the cutting body in the locked state.

[0008] A further improvement solution is as follows: The locking part includes a first arc part connecting the main body part, a first straight part connecting the first arc part, and a second arc part connecting the first straight part. The shape of the second arc part is adapted to the shape of the locking member; in the locked state, the locking member is clamped on the second arc part.

[0009] A further improvement solution is as follows: The cutting main body rotates downward from the locked state, driving the locking member to slide in the locking part and sequentially slide through the second arc part, the first straight part, and the first arc part; when the locking member moves to the first arc part, the cutting main body releases the locked state.

[0010] A further improvement solution is as follows: The locking part includes a second straight part connecting the second arc part, and the angle of the smaller angle in the included angle between the extension line of the first straight part and the extension line of the second straight part is 60° to 90°.

[0011] A further improvement solution is as follows: The locking rod includes a mounting hole opened in the main body part and away from the end of the locking part, and the locking rod is connected to the frame through a fixing screw passing through the mounting hole.

[0012] A further improvement solution is as follows: The locking mechanism includes an elastic member with two ends respectively connected to the fixing screw and the locking rod, and the elastic force of the elastic member prevents the locking link from sliding down due to gravity.

[0013] A further improvement solution is as follows: The locking rod includes an operating member protruding from the side end of the locking part, and the operating member is toggled to rotate the locking rod upward.

[0014] A further improvement solution is as follows: The locking rod is integrally formed of a metal material.

[0015] Compared with the prior art, the present utility model has the following beneficial effects: The cutting device includes a locking mechanism connecting the frame and the support arm, and the locking mechanism is configured to keep the cutting main body in a locked state; the locking mechanism includes a locking rod movably connected to the frame and a locking member installed on the support arm. The locking member moves synchronously with the support arm, and the locking rod is clamped on the locking member. With such a setting, when it is necessary to release the locked state of the cutting main body, only need to press down the cutting main body, the locking member moves downward synchronously and disengages from the locking rod, and unlocking can be achieved with only one hand, and the operation is simple and convenient. [Description of the Drawings]

[0016] The following further describes in detail the specific embodiments of the present utility model with reference to the drawings:

[0017] Figure 1is a three-dimensional schematic diagram of the cutting device of the present utility model;

[0018] Figure 2 is Figure 1 a three-dimensional schematic diagram of the cutting device shown from another angle;

[0019] Figure 3 is Figure 2 a schematic diagram of the cutting device shown in a locked state;

[0020] Figure 4 is Figure 3 a schematic diagram of the cutting device shown during the unlocking process;

[0021] Figure 5 is Figure 4 a schematic diagram of the cutting device shown in an unlocked state;

[0022] Figure 6 is Figure 5 a three-dimensional schematic diagram of the locking rod of the cutting device shown.

[0023] The meanings of the reference numerals in the figure:

[0024] Cutting device 100, cutting main body 200

[0025] Base 1, clamping device 10

[0026] Clamping seat 101, lead screw 102

[0027] Adjusting handle 103, clamping plate 104

[0028] Fixed plate 105, frame 2

[0029] Pivot shaft 20, torsion spring 21

[0030] Support arm 3, locking mechanism 4

[0031] Locking rod 40, main body part 401

[0032] Locking part 402, operating part 403

[0033] Mounting hole 404, first arc part 405

[0034] First straight part 406, second arc part 407

[0035] Second straight part 408, fixing screw 41

[0036] Elastic member 42, locking member 43

[0037] Shell 5, motor shell 50

[0038] Grip portion 51, trigger 511

[0039] Unlock knob 512, shield assembly 6 [Detailed implementation manner]

[0040] The terms used in the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. For example, the terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", etc. are only based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as a limitation to the present utility model.

[0041] Please refer to Figures 1 to 6 Shown is a cutting device 100 according to the present utility model. The cutting device 100 includes a base 1 and a cutting main body 200 supported on the base 1. The cutting main body 200 is supported on the base 1 in a manner that can swing up and down to realize the cutting of the workpiece to be processed (not shown) by the cutting device 100. The cutting main body 200 includes a locked state that remains fixed relative to the base 1. In this locked state, the operator can move the cutting device 100 to the required position or store it in a suitable position.

[0042] The cutting device 100 includes a frame 2 fixed to the upper surface of the base 1. The frame 2 is provided with a pivot shaft 20 penetrating the frame 2 in the transverse direction and a torsion spring 21 sleeved on the outer periphery of the pivot shaft 20. The cutting main body 200 is provided with a support arm 3 connected to the frame 2. The support arm 3 is installed on the frame 2 through the pivot shaft 20, so that the support arm 3 supports the cutting main body 200 to perform the up and down swinging action. The elastic force of the torsion spring 21 makes the cutting main body 200 in the standby position on the upper side away from the base 1 when the cutting device 100 is in the state to be cut, improving the safety of operation.

[0043] The cutting main body 200 includes a housing 5, a motor assembly (not shown) housed in the housing 5, a transmission assembly (not shown) driven by the motor assembly and located at the axial front end of the motor assembly, a cutting blade (not shown) connected to the axial front end of the transmission assembly and driven by the transmission assembly to rotate, and a shield assembly 6 at least partially covering the cutting blade. The motor assembly drives the cutting blade to rotate through the transmission assembly and cuts the workpiece to be processed. The shield assembly 6 covers the outer periphery of the cutting blade to prevent injury to the operator during the cutting process.

[0044] Further, the housing 5 includes a motor housing 50 that houses the motor assembly and a grip portion 51 connected to the motor housing 50. The grip portion 51 is configured in a shape that is easy to hold. The grip portion 51 includes an unlocking knob 512 that at least partially protrudes and a trigger 511 located inside. The unlocking knob 512 is used to release the locked state of the trigger 511 to activate the cutting device 100. The trigger 511 can be pulled by the operator to activate the drive assembly and drive the cutting blade to rotate.

[0045] Please refer to Figure 1 and Figure 2 As shown, the base 1 is provided with a clamping device 10 on the upper surface and a guide rail (not shown) that penetrates the upper surface and extends longitudinally. The clamping device 10 is used to clamp the workpiece to be processed. The clamping device 10 includes a fixing plate 105 and a clamping plate 104 on the upper surface of the base 1. The clamping plate 104 is located at the relative front end of the fixing plate 105. The fixing plate 105 is connected to the guide rail and can move within the guide rail. With such a setting, the longitudinal position of the fixing plate 105 on the base 1 can be adjusted in a timely manner according to the cutting requirements, and the adjustable positions are diverse. The workpiece to be processed is placed between the fixing plate 105 and the clamping plate 104, so that the workpiece to be processed is clamped and fixed, facilitating the cutting operation.

[0046] Further, the clamping device 10 includes a clamping seat 101 at the longitudinal front end of the base 1 and a lead screw 102 that extends longitudinally. The clamping seat 101 is fixed to the upper surface of the base 1. The longitudinal front end of the lead screw 102 passes through the clamping seat 104, and the clamping plate 104 is connected to the longitudinal rear end of the lead screw 102. An adjusting handle 103 is installed at the front end of the lead screw 102. The adjusting handle 103 passes through the longitudinal front end of the lead screw 102. When the adjusting handle 103 is rotated, the lead screw 102 rotates together, causing the lead screw 102 to slide within the clamping seat 101, thereby driving the clamping plate 104 to move within the guide rail to clamp or release the workpiece to be processed between the fixing plate 105 and the clamping plate 104.

[0047] The cutting device 100 includes a locking mechanism 4 that connects the frame 2 and the support arm 3. The locking mechanism 4 is configured to hold the cutting body 200 in the locked state. The locking mechanism 4 includes a locking rod 40 movably connected to the frame 2 and a locking member 43 installed on the support arm 3. The locking member 43 moves synchronously with the support arm 3. The locking rod 40 is clamped by the locking member 43 to hold the cutting body 200 in the locked state.

[0048] Specifically, the locking lever 40 includes a main body portion 401 connected to the frame 2 and a locking portion 402 abutting against the locking member 43. In the locked state, the locking member 43 is clamped in the locking portion 402. Moreover, the elastic force of the torsion spring 21 provides an upward force to the cutting main body 200, so that the cutting main body 200 has a tendency to move upward, ensuring that the locking portion 402 can reliably clamp the locking member 43.

[0049] Please refer to Figure 6 As shown, the locking portion 402 includes a first arc portion 405 connecting the main body portion 401, a first straight portion 406 connecting the first arc portion 405, a second arc portion 407 connecting the first straight portion 406, and a second straight portion 408 connecting the second arc portion 407. The shape of the second arc portion 407 is adapted to the shape of the locking member 43 to clamp the locking member 43 in the locking portion 402. The second straight portion 408 abuts against the locking member 43 to prevent the locking member 43 from disengaging from the second arc portion 407. The angle of the smaller angle between the extension line of the first straight portion 406 and the extension line of the second straight portion 408 is 60° to 90°, which can enable the locking mechanism 4 to reliably hold the cutting main body 200 in the locked state.

[0050] Furthermore, the locking lever 40 includes a mounting hole 404 formed in the main body portion 401 and away from the end of the locking portion 402. The locking lever 40 is connected to the frame 2 by a fixing screw 41 passing through the mounting hole 404. An elastic member 42 is provided between the fixing screw 41 and the locking lever 40. Under the elastic force of the elastic member 42, the locking lever 40 will not rotate downward due to its own gravity. An operating member 403 protrudes outward from the side wall of the locking lever 40. The operating member 403 is toggled to rotate the locking lever 40 upward. The locking lever 40 is integrally formed of a metal material.

[0051] In the locked state, when the cutting main body 200 is pressed, the locking member 43 moves downward with the cutting main body 200. The locking member 43 slides within the locking portion 402 and sequentially slides past the second arc portion 407, the first straight portion 406, and the first arc portion 405. When the locking member 43 slides to the first arc portion 405, the locking member 43 disengages from the locking portion 402, and the cutting main body 200 releases the locked state, so that the cutting main body 200 is in the standby position on the upper side away from the base 1.

[0052] When the cutting device 100 needs to be moved or stored, the cutting body 200 is pressed downward, and then the operating portion 403 is moved to clamp the second arc portion 407 of the locking rod 40 on the locking member 43 to lock the cutting body 200 .

[0053] In this embodiment, the cutting device 100 includes the locking mechanism 4 connecting the frame 2 and the support arm 3, and the locking mechanism 4 is configured to keep the cutting body 200 in the locked state; the locking mechanism 4 includes the locking rod 40 movably connected to the frame 2 and the locking member 43 mounted to the support arm 3, the locking member 43 moves synchronously with the support arm 3, and the locking rod 40 is clamped on the locking member 43. In this way, when the locking state of the cutting body 200 needs to be released, it is only necessary to press the cutting body 200 downward, and the locking member 43 moves synchronously downward and disengages from the locking rod 40, and the unlocking can be achieved with one hand, which is simple and convenient to operate.

[0054] The present invention is not limited to the above specific embodiments. A person skilled in the art can easily understand that there are many alternatives to the cutting device of the present invention without departing from the principle and scope of the present invention. The protection scope of the present invention shall be subject to the content of the claims.

Claims

1. A cutting device, comprising a base, a frame fixed above the base, and a cutting body supported by the frame, wherein the cutting body comprises a support arm connected to the frame, the support arm pivots around the frame to enable the cutting body to rotate downward and cut a workpiece to be processed, and the cutting body comprises a locking state that remains fixed relative to the base; characterized in that: The cutting device includes a locking mechanism connecting the frame and the support arm, and the locking mechanism is configured to keep the cutting body in the locked state; the locking mechanism includes a locking rod movably connected to the frame and a locking member installed to the support arm, the locking member moves synchronously with the support arm, and the locking rod is clamped on the locking member.

2. The cutting device according to claim 1, characterized in that: The cutting device comprises a pivot shaft penetrating the frame in a transverse direction and a torsion spring sleeved on the outer periphery of the pivot shaft. In the locked state, the torsion spring cooperates with the locking rod to keep the cutting body in the locked state.

3. The cutting device according to claim 2, characterized in that: The locking rod includes a main body connected to the frame and a locking portion abutting against the locking member, and the locking member is clamped on the locking portion to keep the cutting body in the locked state.

4. The cutting device according to claim 3, characterized in that: The locking portion includes a first arc portion connected to the main body portion, a first straight portion connected to the first arc portion, and a second arc portion connected to the first straight portion, and the shape of the second arc portion is adapted to the shape of the locking member; in the locked state, the locking member is clamped in the second arc portion.

5. The cutting device according to claim 4, characterized in that: The cutting body rotates downward from the locking state, driving the locking piece to slide in the locking portion and sequentially slide over the second arc portion, the first straight portion and the first arc portion; when the locking piece moves to the first arc portion, the cutting body releases the locking state.

6. The cutting device according to claim 4, characterized in that: The locking portion includes a second straight portion connecting the second arc portion, and the smaller angle of the included angles between the extended line of the first straight portion and the extended line of the second straight portion is 60° to 90°.

7. The cutting device according to claim 3, characterized in that: The locking rod comprises a mounting hole which is opened at an end of the main body and away from the locking portion, and the locking rod is connected to the frame by a fixing screw passing through the mounting hole.

8. The cutting device according to claim 7, characterized in that: The locking mechanism comprises an elastic member with two ends respectively connecting the fixing screw and the locking rod, and the elastic force of the elastic member prevents the locking rod from sliding down due to gravity.

9. The cutting device according to claim 3, characterized in that: The locking rod comprises an operating member protruding from a side end of the locking portion, and the operating member is moved to rotate the locking rod upward.

10. The cutting device according to claim 9, characterized in that: The locking rod is integrally formed of metal material.

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