Electric cutting knife capable of preventing clamping during cutting

Abstract

The utility model relates to an electric cutting knife capable of preventing clamping during cutting, which comprises a casing, a motor, a transmission mechanism, a control mechanism, a rotary blade, a blade cover and a knife holder, the motor, the transmission mechanism and the control mechanism are arranged in the casing, the rotary blade, the blade cover and the knife holder are arranged outside the casing, the blade cover covers the rotary blade, and the blade cover covers the knife holder. The rotary blade abuts against the tool apron in a vertically staggered mode, the motor is connected with the rotary blade through the transmission mechanism and controlled by the control mechanism, the rotary blade is polygonal, the outer edge of each edge of the rotary blade is a cutting edge, the tool apron comprises a seat body and a lower blade, the seat body is connected with the machine shell, an installation opening is formed in the seat body, and the lower blade is arranged in the installation opening. The lower blade abuts against the rotary blade in a staggered mode. According to the technical scheme, the problem that materials are prone to being stuck during cutting can be effectively solved, so that materials including fine materials can be smoothly cut, and the cutting smoothness and the cutting efficiency can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to an electric cutting knife capable of preventing jamming during cutting. Background Art

[0002] An electric cutter is a tool powered by electricity and used to cut various materials, such as paper, cloth, leather, plastic film, etc. Compared with manual cutters, it is faster, more labor-saving, and can perform more precise cutting.

[0003] At present, the blades of electric cutting shears are of two types: rotary and vibrating. The rotary blade and the vibrating blade cut by rapid rotation and high-frequency vibration respectively, which makes the rotary blade more suitable for cutting thick materials. The rotary blade is circular in shape, and there is a knife seat corresponding to it below, and there is a cutting opening for inserting materials between the blade and the knife seat. For example, Chinese patent No. CN205839451U discloses a multifunctional circular knife cutting machine, which includes a bracket, a motor and a circular blade. The motor is mounted on the bracket, a power shaft is mounted on the bracket, the circular blade is detachably mounted on the power shaft, a handle is mounted on the motor, a chassis for guiding the movement of the circular knife cutting machine is mounted below the circular blade, and a start switch for controlling the motor is arranged on the handle.

[0004] The problem with the above-mentioned existing electric cutters with rotary blades is that when the material is inserted into the cutting opening and the electric cutter is pushed to cut the material, the material may get stuck, especially when cutting fine materials, the material may get stuck more frequently, thereby greatly affecting the smoothness of cutting and the efficiency of cutting. Utility Model Content

[0005] In view of the above situation, in order to overcome the problem that the above-mentioned existing electric cutters with rotary blades are prone to material jamming when cutting materials, especially when the materials to be cut are fine materials, thereby affecting the smoothness of cutting and the efficiency of cutting, the purpose of the utility model is to provide an electric cutter that can effectively overcome the problem of material jamming during cutting, so that materials including fine materials can be smoothly cut, so that the smoothness of cutting and the cutting efficiency can be significantly improved.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] The utility model discloses an electric cutting knife with anti-stuck cutting function, which comprises a casing, a motor, a transmission mechanism, a control mechanism, a rotary blade, a blade cover and a knife seat. The motor, the transmission mechanism and the control mechanism are arranged in the casing, the rotary blade, the blade cover and the knife seat are arranged outside the casing, the blade cover is arranged on the rotary blade, the rotary blade and the knife seat are offset and abutted against each other up and down, the motor is connected to the rotary blade through the transmission mechanism and is controlled by the control mechanism, the outer shape of the rotary blade is a polygon, the outer edge of each edge of the rotary blade is a blade, the knife seat comprises a seat body and a lower blade, the seat body is connected to the casing, a mounting opening is arranged on the seat body, the lower blade is arranged in the mounting opening, and the lower blade and the rotary blade are offset and abutted against each other.

[0008] Preferably, the knife seat further comprises a blade holder, which is located at one side of the mounting opening and connected to the seat body, and the lower blade is mounted on the blade holder.

[0009] Preferably, the blade holder is detachably connected to the seat body via a first threaded fastener, at least two insert blocks are formed on the blade holder, and the lower blade is plug-fitted to the blade holder via the insert blocks.

[0010] Preferably, one side of the blade cover is snap-fitted with a slot on the housing through a snap buckle, the blade seat is located between the blade cover and the housing, the housing, the blade cover and the blade seat are fixed by a second threaded fastener, at least two limit blocks are formed on the housing, and the blade seat is plugged into the housing through the limit blocks.

[0011] Preferably, the casing includes a left shell body and a right shell body, which are fixed by a plurality of third threaded fasteners, and a blade mounting area is formed on the outer wall of the front end of the left shell body, and the rotating blade, blade cover and blade seat are installed in the blade mounting area.

[0012] Preferably, the transmission mechanism includes a front gear, a transmission rod, a rear gear and a fourth threaded fastener, the front gear is connected to the output end of the motor, the transmission rod is located on one side of the front gear, the rear gear is sleeved on the transmission rod and meshes with the front gear, a mounting seat is formed at the front end of the transmission rod, the mounting seat extends through the casing to the external space, a fixing pin is formed on the mounting seat, the rotating blade is plugged into the mounting seat through the fixing pin, and the fourth threaded fastener passes through the rotating blade and is fixed to the mounting seat.

[0013] Preferably, the control mechanism includes a control circuit board, a power supply and a switch, the motor, the power supply and the switch are all electrically connected to the control circuit board, and the switch extends through the casing to the external space.

[0014] Preferably, the control mechanism further includes a charging interface, which is electrically connected to the control circuit board and extends through the housing to the external space.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] The utility model changes the shape of a circular blade into a polygon and processes a cutting edge on each edge to change the angle between the blade and the lower blade seat, and the angle changes continuously when the rotary blade is driven to rotate, thereby providing different cutting angles and contact points during cutting, reducing the risk of fine materials being stuck by a single angle, and providing more friction for the material, especially when cutting fine materials, further reducing the sliding and sticking of the fine materials during the cutting process, thereby significantly improving the smoothness of cutting and the efficiency of cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the electric cutting scissors of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the electric cutting scissors of the utility model from another perspective;

[0019] Figure 3 This is a schematic diagram of the overall structure of the rotary blade of the electric shears of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the electric cutting scissors of the utility model when the knife seat is disassembled;

[0021] Figure 5 It is a schematic diagram of the structure of the electric cutting scissors when the blade cover and the knife seat are separated from the casing;

[0022] Figure 6 It is a schematic diagram of the structure when the left shell and the right shell of the electric cutting scissors housing of the utility model are separated, and the rotary blade and the knife seat are separated;

[0023] Figure 7 It is a schematic diagram of the overall structure of the transmission rod of the transmission mechanism of the electric cutting scissors of the utility model;

[0024] Figure 8 The utility model is a schematic diagram of the internal structure of the electric shears when the left shell and the right shell are separated.

[0025] As shown in the figure:

[0026] 1. Casing; 1a. Card slot; 1b. Limit block; 101. Left shell; 101a. Blade installation area; 102. Right shell; 2. Motor; 3. Transmission mechanism; 301. Front gear; 302. Transmission rod; 302a. Mounting seat; 302b. Fixing pin; 303. Rear gear; 304. Fourth threaded fastener; 4. Control mechanism; 401. Control circuit board; 402. Power supply; 403. Switch; 404. Charging port; 5. Rotating blade; 501. Blade; 6. Blade cover; 601. Buckle; 7. Blade seat; 701. Seat body; 701a. Mounting port; 702. Lower blade; 703. Blade holder; 703a. Insert block; 704. First threaded fastener; 8. Second threaded fastener; 9. Third threaded fastener. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of simplifying the description, and do not indicate or imply that the directions are specific directions that must be possessed and specific directions, structures, and operations, and therefore should not be understood as limitations on the present utility model.

[0029] like Figures 1 to 3As shown, the utility model relates to an electric cutting knife with anti-stuck cutting function, which comprises a casing 1, a motor 2, a transmission mechanism 3, a control mechanism 4, a rotary blade 5, a blade cover 6 and a knife seat 7. The casing 1 has a handle portion for a user to hold and control, the motor 2, the transmission mechanism 3 and the control mechanism 4 are arranged in the casing 1 and protected by the casing 1, the rotary blade 5, the blade cover 6 and the knife seat 7 are arranged outside the casing 1, the blade cover 6 is covered on the rotary blade 5, the blade cover 6 is a half-arc structure, so that the outer edge of the rotary blade 5 in one direction is covered, and the outer edge in the other direction can be exposed to the external space for cutting, the rotary blade 5 and the knife seat 7 are arranged in an upper and lower staggered manner, and a cutting opening for inserting materials is formed between the blade and the knife seat 7, the motor 2 is connected to the rotary blade 5 through the transmission mechanism 3, and the motor 2 is controlled by the control mechanism 4, and the transmission mechanism 3 is driven by the motor 2 to drive the rotary blade 5 to rotate to cut the material in the cutting opening, and the shape of the rotary blade 5 is a polygon, that is, the rotary blade 5 is rotated. The outer edge of the rotary blade 5 is composed of a plurality of edges, and the outer edge of each edge of the rotary blade 5 is processed into a blade 501. The blade seat 7 includes a seat body 701 and a lower blade 702. The seat body 701 is connected to the housing 1. The seat body 701 is provided with a mounting opening 701a, and the lower blade 702 is arranged in the mounting opening 701a. The rotary blade 5 and the lower blade 702 in the mounting opening 701a are offset up and down and abut against each other, thereby forming a shearing edge, allowing the rotary blade 5 and the lower blade 702 to cut materials mutually when they are closed. By changing the shape of the circular blade into a polygon and processing a blade 501 on each edge, the angle between the circular blade and the lower blade seat 7 is changed, and the angle changes continuously when the rotary blade 5 is driven to rotate, thereby providing different cutting angles and contact points during cutting, reducing the risk of fine materials being stuck at a single angle, and providing more friction for the material, especially when cutting fine materials, further reducing the sliding and sticking of fine materials during the cutting process, thereby significantly improving the smoothness of cutting and the efficiency of cutting.

[0030] like Figure 1 , Figure 2 , Figures 4 to 6 As shown, the knife seat 7 also includes a blade holder 703, which is located on one side of the mounting opening 701a. The blade holder 703 is connected to the seat body 701, and the lower blade 702 is installed on the blade holder 703 and supported by the blade holder 703, so as to be firmly maintained in the mounting opening 701a of the knife seat 7.

[0031] like Figure 1 , Figure 4 and Figure 5As shown, the blade holder 703 is detachably connected to the seat body 701 via a first threaded fastener 704. There is no particular restriction on the number of the first threaded fasteners 704. The number of fixing points between the blade holder 703 and the seat body 701 is increased by increasing the number of the first threaded fasteners 704, thereby providing a stable connection. The threaded connection facilitates the disassembly and assembly of the blade holder 703, so that the lower blade 702 can be replaced when it is worn. At least two plug blocks 703a are formed on the blade holder 703, and the lower blade 702 is plugged into and matched with the blade holder 703 via the plug blocks 703a. The multi-point fixing method can also firmly fix the lower blade 702 to the blade holder 703 to prevent it from deflecting. At the same time, the simple plug-in fit also facilitates the disassembly and assembly of the lower blade 702.

[0032] like Figure 5 As shown, one side of the blade cover 6 is snapped with the slot 1a on the casing 1 through a snap 601, and the snapping position is the first fixed point formed between the blade cover 6 and the casing 1. The knife seat 7 is located between the blade cover 6 and the casing 1. The casing 1, the blade cover 6 and the knife seat 7 are fixed by a second threaded fastener 8. The second threaded fastener 8 forms another fixed point between the blade cover 6 and the casing 1. The two-point fixation achieves a stable connection, and the second threaded fastener 8 also forms a fixed point between the knife seat 7 and the casing 1. To prevent the knife seat 7 from deflecting, at least two limit blocks 1b are formed on the casing 1. The knife seat 7 is plugged into the casing 1 through the limit blocks 1b, thereby increasing the fixed points between the knife seat 7 and the casing 1 and achieving a stable connection between the two.

[0033] like Figure 1 , Figure 2 and Figure 6 As shown, the casing 1 consists of a left shell 101 and a right shell 102. The left shell 101 and the right shell 102 are fixed by a plurality of third threaded fasteners 9. The third threaded fasteners 9 are specifically arranged along the mating surfaces of the left shell 101 and the right shell 102, so as to avoid a gap between the left shell 101 and the right shell 102 and achieve a stable connection. A blade mounting area 101a is formed on the outer wall of the front end of the left shell 101. The rotary blade 5, the blade cover 6 and the blade seat 7 are installed in the blade mounting area 101a. The blade mounting area 101a is away from the handle part of the shell, so as to effectively avoid the high-speed rotating rotary blade 5 from injuring the user's hand during cutting, thereby improving the safety of use.

[0034] like Figure 6 and Figure 7As shown, the transmission mechanism 3 includes a front gear 301, a transmission rod 302, a rear gear 303 and a fourth threaded fastener 304. The front gear 301 is connected to the output end of the motor 2 and is driven to rotate by the output end of the motor 2. The transmission rod 302 is located on one side of the front gear 301. The rear gear 303 is sleeved on the transmission rod 302 and meshes with the front gear 301. The rear gear 303 is driven by the front gear 301, thereby driving the transmission rod 302 to rotate. The front end of the transmission rod 302 is formed with The mounting seat 302a extends through the housing 1 to the external space, a fixing pin 302b is formed on the mounting seat 302a, the rotating blade 5 is plugged into the mounting seat 302a through the fixing pin 302b, the fourth threaded fastener 304 passes through the rotating blade 5 and is fixed to the mounting seat 302a, and multiple fixing points are formed between the rotating blade 5 and the mounting seat 302a through the positioning pin and the fourth threaded fastener 304, ensuring that the rotating blade 5 can rotate synchronously with the transmission rod 302 at high speed.

[0035] like Figure 1 , Figure 2 and Figure 8 As shown, the control mechanism 4 includes a control circuit board 401, a power supply 402 and a switch 403. The motor 2, the power supply 402 and the switch 403 are all electrically connected to the control circuit board 401. The control circuit board 401 has a chip, which receives control instructions from the switch 403 through the chip and controls the working state of the motor 2. The power supply 402 provides the necessary electrical energy for the operation of the chip and the motor 2. The switch 403 extends through the housing 1 to the external space, so that the user can touch the switch 403 to send control instructions to the control circuit board 401.

[0036] like Figure 2 and Figure 8 As shown, the control mechanism 4 also includes a charging interface 404, which is electrically connected to the control circuit board 401 and extends through the housing 1 to the external space. The external power supply 402 and the charging interface 404 are connected through the power supply line 402, so that the power supply 402 does not need to be replaced when the power of the power supply 402 is exhausted, so that the power supply 402 can be recycled to prevent it from being discarded after the power is exhausted, thereby saving the cost of use.

[0037] Combination Figures 1 to 8The electric cutting knife of the utility model changes the shape of the circular blade into a polygon and processes a blade 501 on each edge to change the angle between the blade and the lower blade seat 7. When the material is inserted into the cutting opening between the rotary blade 5 and the lower blade seat 7, the user sends a control instruction to the chip on the control circuit board 401 through the switch 403. The chip controls the operation of the motor 2, and the motor 2 first drives all the gears to rotate. The front gear 301 drives the transmission rod 302 through the rear gear 303, and the transmission rod 302 drives the rotary blade 5 to rotate at a high speed. When the rotary blade 5 rotates, the angle formed between it and the blade seat 7 is constantly changing, and the lower blade 702 on the blade seat 7 is used to cut the material. Different cutting angles and contact points can be provided during the cutting process to prevent the material from sliding and getting stuck, so that fine materials can also be cut smoothly, thereby making the cutting of materials more efficient.

[0038] The above embodiments and descriptions are only for explaining the principle and the best embodiment of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. An electric cutting knife with a cutting function and an anti-stuck function, comprising a housing (1), a motor (2), a transmission mechanism (3), a control mechanism (4), a rotary blade (5), a blade cover (6) and a knife seat (7), wherein the motor (2), the transmission mechanism (3) and the control mechanism (4) are arranged in the housing (1), the rotary blade (5), the blade cover (6) and the knife seat (7) are arranged outside the housing (1), the blade cover (6) is arranged on the rotary blade (5), the rotary blade (5) and the knife seat (7) are offset and abutted against each other in an upper and lower direction, the motor (2) is connected to the rotary blade (5) through the transmission mechanism (3), and is controlled by the control mechanism (4), characterized in that: The outer shape of the rotating blade (5) is a polygon. The outer edge of each edge of the rotating blade (5) is a blade (501). The blade seat (7) comprises a seat body (701) and a lower blade (702). The seat body (701) is connected to the housing (1). The seat body (701) is provided with a mounting opening (701a). The lower blade (702) is arranged in the mounting opening (701a), and the lower blade (702) and the rotating blade (5) are offset and abutted against each other.

2. The electric cutting knife with anti-stuck cutting function according to claim 1, characterized in that: The blade seat (7) further comprises a blade holder (703), wherein the blade holder (703) is located at one side of the mounting opening (701a) and is connected to the seat body (701), and the lower blade (702) is mounted on the blade holder (703).

3. The electric cutting knife with anti-stuck cutting function according to claim 2, characterized in that: The blade holder (703) is detachably connected to the seat body (701) via a first threaded fastener (704); at least two plug blocks (703a) are formed on the blade holder (703); and the lower blade (702) is plugged into and matched with the blade holder (703) via the plug blocks (703a).

4. The electric cutting knife with anti-stuck cutting function according to any one of claims 1 to 3, characterized in that: One side of the blade cover (6) is snap-connected with a slot (1a) on the housing (1) via a snap buckle (601); the blade holder (7) is located between the blade cover (6) and the housing (1); the housing (1), the blade cover (6) and the blade holder (7) are fixed via a second threaded fastener (8); at least two limit blocks (1b) are formed on the housing (1); the blade holder (7) is plug-fitted with the housing (1) via the limit blocks (1b).

5. The electric cutting knife with anti-stuck cutting function according to claim 1, characterized in that: The housing (1) comprises a left housing (101) and a right housing (102), wherein the left housing (101) and the right housing (102) are fixed by a plurality of third threaded fasteners (9), a blade mounting area (101a) is formed on the outer wall at the front end of the left housing (101), and the rotating blade (5), the blade cover (6) and the blade seat (7) are mounted in the blade mounting area (101a).

6. The electric cutting knife with anti-stuck cutting function according to claim 1 or 5, characterized in that: The transmission mechanism (3) comprises a front gear (301), a transmission rod (302), a rear gear (303) and a fourth threaded fastener (304); the front gear (301) is connected to the output end of the motor (2); the transmission rod (302) is located on one side of the front gear (301); the rear gear (303) is sleeved on the transmission rod (302) and meshes with the front gear (301); a mounting seat (302a) is formed at the front end of the transmission rod (302); the mounting seat (302a) passes through the housing (1) and extends into the external space; a fixing pin (302b) is formed on the mounting seat (302a); the rotary blade (5) is plugged into the mounting seat (302a) via the fixing pin (302b); and the fourth threaded fastener (304) passes through the rotary blade (5) and is fixed to the mounting seat (302a).

7. The electric cutting knife with anti-stuck cutting function according to claim 6, characterized in that: The control mechanism (4) comprises a control circuit board (401), a power source (402) and a switch (403); the motor (2), the power source (402) and the switch (403) are all electrically connected to the control circuit board (401); and the switch (403) penetrates the housing (1) and extends into the external space.

8. The electric cutting knife with anti-stuck cutting function according to claim 7, characterized in that: The control mechanism (4) further comprises a charging interface (404), wherein the charging interface (404) is electrically connected to the control circuit board (401) and extends through the housing (1) to the external space.

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