Electric scissors

Abstract

The utility model discloses a pair of electric scissors, which comprises a bracket; the motor is arranged on the bracket; the transmission assembly comprises a screw rod and a transmission block in threaded transmission with the screw rod, and the screw rod is coaxially connected with an output shaft of the motor; the first scissors are hinged to the support, a first connecting rod is arranged between the first scissors and the transmission block, and the first connecting rod is hinged to the first scissors and the transmission block; the second scissors are hinged to the support, the second scissors and the first scissors are oppositely arranged, a second connecting rod is arranged between the second scissors and the transmission block, and the second connecting rod is hinged to the second scissors and the transmission block; the guide assembly comprises a roller and a guide groove, the roller is arranged on one of the support and the transmission block, the guide groove is formed in the other one of the support and the transmission block, and when the transmission block moves, the roller moves along the guide groove. The shearing precision and the shearing stability can be improved, and the shearing device can adapt to higher-strength cutting operation.

Description

Technical Field

[0001] The utility model relates to the technical field of scissors, in particular to an electric scissors. Background Art

[0002] In metal shearing, metal strength is relatively high. In order to improve cutting accuracy, servo shears are used to cut metal. The servo shears include a shearing assembly, a transmission assembly and a servo motor. The servo motor drives the shearing assembly through the transmission assembly to shear metal. However, when shearing metal, due to the rapid response and movement of the servo motor, the transmission assembly is prone to vibrate, causing the shearing assembly to vibrate, thereby affecting the shearing accuracy and stability. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides an electric scissors that can improve cutting accuracy and cutting stability and can adapt to higher-intensity cutting operations.

[0004] According to an embodiment of the utility model, an electric scissors includes: a bracket; a motor, which is arranged on the bracket; a transmission assembly, including a screw and a transmission block threadedly driven by the screw, and the screw is coaxially connected to the output shaft of the motor; a first scissors, which is hingedly arranged on the bracket, a first connecting rod is arranged between the first scissors and the transmission block, and the first connecting rod hinges the first scissors and the transmission block; a second scissors, which is hingedly arranged on the bracket, the second scissors and the first scissors are arranged opposite to each other, a second connecting rod is arranged between the second scissors and the transmission block, and the second connecting rod hinges the second scissors and the transmission block; a guide assembly, including a roller and a guide groove, the roller is arranged on one of the bracket and the transmission block, and the guide groove is arranged on the other of the bracket and the transmission block, and when the transmission block moves, the roller moves along the guide groove.

[0005] An electric scissors according to an embodiment of the utility model has at least the following beneficial effects:

[0006] The utility model provides a roller and a guide groove, utilizes a motor to drive the screw to rotate, and the screw and the transmission block are threadedly transmitted, so that the transmission block can move in a straight line. The transmission block enables the first connecting rod and the second connecting rod to move, so that the first scissors and the second scissors are relatively close to each other for shearing metal. Since the transmission block is prone to twisting and shaking during the threaded transmission of the screw and the transmission block, the roller is moved in the guide groove to limit the moving position of the transmission block and reduce the twisting and shaking of the transmission block. At the same time, there is rolling friction between the roller and the guide groove, and the friction force is small, which is conducive to reducing the resistance suffered by the transmission block, thereby improving the shearing accuracy and shearing stability, and can adapt to higher-intensity cutting operations.

[0007] According to an electric scissors embodiment of the present invention, the transmission block includes a square member, and guide grooves are respectively provided on the upper and lower sides of the square member, and the guide grooves extend along the length direction of the screw rod.

[0008] According to an electric scissors embodiment of the present invention, the bracket includes an upper side plate and a lower side plate, and the upper side plate and the lower side plate limit the square member in the up and down directions.

[0009] According to an electric scissors embodiment of the present invention, a first shaft pin and a second shaft pin are provided between the upper side plate and the lower side plate, the first scissors are provided on the first shaft pin, and the second scissors are provided on the second shaft pin.

[0010] According to an electric scissors embodiment of the present invention, the transmission block includes a nut and a mounting portion connected to the nut, the nut and the screw are threadedly arranged, a through hole for accommodating the nut is provided on a horizontal side of the square member, and the mounting portion is connected to one side of the square member by a bolt.

[0011] According to an electric scissors embodiment of the present invention, the first connecting rod and the second connecting rod both include an upper connecting plate, a lower connecting plate, and a vertical plate connecting the upper connecting plate and the lower connecting plate, the upper connecting plate, the lower connecting plate and the vertical plate are arranged in an H shape, two third axle pins are connected between the upper connecting plate and the lower connecting plate, and the vertical plate is arranged between the two third axle pins.

[0012] According to an electric scissors embodiment of the present invention, the roller is a bearing.

[0013] According to an electric scissors embodiment of the present invention, the bearing is coaxially provided with a rotating shaft, and the bearing is connected to the bracket through the rotating shaft.

[0014] According to an electric scissors embodiment of the present invention, the first scissors and the second scissors each have a blade and a positioning groove for accommodating the blade on one opposite side.

[0015] According to an electric scissors embodiment of the present invention, a positioning pin is provided on the side wall of the positioning groove, and the blade is provided with a pin hole for accommodating the positioning pin.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic structural diagram of an electric scissors according to an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 An exploded view of an electric scissors is shown;

[0020] Figure 3 for Figure 1 A cross-sectional view of an electric scissors is shown.

[0021] Figure markings: 100-bracket, 110-motor, 120-screw, 130-transmission block, 140-first scissors, 150-first connecting rod, 160-second scissors, 170-second connecting rod, 180-roller, 190-guide groove, 200-square part, 210-upper side plate, 220-lower side plate, 230-first axis pin, 240-second axis pin, 250-nut, 260-mounting part, 270-through hole, 280-upper connecting plate, 290-lower connecting plate, 300-vertical plate, 310-third axis pin, 320-rotating shaft, 330-blade, 340-positioning groove, 350-positioning pin. DETAILED DESCRIPTION

[0022] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of this utility model, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If a first or second is mentioned, this is solely for the purpose of distinguishing the technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0025] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted, connected, and connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] An electric scissors according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0027] Reference Figure 1 , the utility model aims to provide an embodiment of an electric scissors.

[0028] The electric scissors of the present invention include a bracket 100, a motor 110, a transmission assembly, a first pair of scissors 140, a second pair of scissors 160, and a guide assembly. The motor 110 is arranged on the bracket 100, and the motor 110 can be a servo motor; the transmission assembly includes a screw 120 and a transmission block 130 that is threaded with the screw 120, and the screw 120 is coaxially connected to the output shaft of the motor 110; the first pair of scissors 140 is hingedly arranged on the bracket 100, and a first connecting rod 150 is arranged between the first pair of scissors 140 and the transmission block 130, and the first connecting rod 150 is hingedly connected to the first pair of scissors 140 and the transmission block 130; the second pair of scissors 160 is hingedly arranged on the bracket 100. 0, the second scissors 160 and the first scissors 140 are arranged opposite to each other, and a second connecting rod 170 is provided between the second scissors 160 and the transmission block 130, and the second connecting rod 170 is hinged to the second scissors 160 and the transmission block 130; the guide assembly includes a roller 180 and a guide groove 190, the roller 180 is provided on one of the bracket 100 and the transmission block 130, and the guide groove 190 is provided on the other of the bracket 100 and the transmission block 130. When the transmission block 130 moves, the roller 180 moves along the guide groove 190.

[0029] Therefore, the motor 110 is used to drive the screw 120 to rotate, and the screw 120 and the transmission block 130 are threadedly transmitted, so that the transmission block 130 can move in a straight line. The transmission block 130 enables the first connecting rod 150 and the second connecting rod 170 to move, so that the first scissors 140 and the second scissors 160 are relatively close to the sheared metal. Since the transmission block 130 is prone to twisting and shaking during the threaded transmission of the screw 120 and the transmission block 130, the roller 180 is moved in the guide groove 190 to limit the moving position of the transmission block 130 and reduce the twisting and shaking of the transmission block 130. At the same time, there is rolling friction between the roller 180 and the guide groove 190, and the friction force is small, which is conducive to reducing the resistance received by the transmission block 130, thereby improving the shearing accuracy and shearing stability, and can adapt to higher intensity cutting operations.

[0030] Preferably, the roller 180 is a bearing. The bearing is a prior art and can be purchased on the market. It is low in cost and durable.

[0031] In some embodiments of the present invention, a rotating shaft 320 is coaxially arranged on the bearing, and the bearing is connected to the bracket 100 via the rotating shaft 320 .

[0032] Specifically, the bearing is installed on the rotating shaft 320, and the rotating shaft 320 is fixed to the bracket 100 by bolts, so that the bearing installation is more convenient.

[0033] In some embodiments of the present invention, the transmission block 130 includes a square member 200 . The square member 200 is provided with guide grooves 190 on the upper and lower sides respectively. The guide grooves 190 extend along the length direction of the screw rod 120 .

[0034] It can be understood that the square member 200 has a simple structure and is easy to manufacture, making it easier to process the guide groove 190 on the square groove.

[0035] Two rollers 180 are arranged in the guide groove 190 on the upper side of the square member 200, and both rollers 180 can move in the guide groove 190. Two rollers 180 are arranged in the guide groove 190 on the lower side of the square member 200, thereby effectively limiting the moving position of the transmission block 130 and reducing the torsional jitter of the transmission block 130.

[0036] In some embodiments of the present invention, the bracket 100 includes an upper side plate 210 and a lower side plate 220 , and the upper side plate 210 and the lower side plate 220 limit the square member 200 in the up and down directions.

[0037] It can be understood that the square member 200 can move in the space formed between the upper side plate 210 and the lower side plate 220 , and the upper side plate 210 and the lower side plate 220 can assist in limiting the moving position of the transmission block 130 .

[0038] In some embodiments of the present invention, referring to Figure 3 A first shaft pin 230 and a second shaft pin 240 are provided between the upper side plate 210 and the lower side plate 220 , the first scissors 140 are provided on the first shaft pin 230 , and the second scissors 160 are provided on the second shaft pin 240 .

[0039] Therefore, the upper side plate 210 and the lower side plate 220 can limit the movement of the first scissors 140 and the second scissors 160, so that the first scissors 140 rotates around the first axis pin 230 and the second scissors 160 rotates around the second axis pin 240, avoiding the axial movement of the first scissors 140 along the first axis pin 230 and the axial movement of the second scissors 160 along the second axis pin 240.

[0040] In some embodiments of the present invention, referring to Figure 3 The transmission block 130 includes a nut 250 and a mounting portion 260 connected to the nut 250. The nut 250 is threadedly arranged with the screw rod 120. A through hole 270 for accommodating the nut 250 is provided on the horizontal side of the square member 200. The mounting portion 260 is connected to one side of the square member 200 by a bolt.

[0041] Therefore, the nut 250 is installed in the through hole 270 of the square member 200, and the mounting portion 260 is connected to one side of the square member 200, making the installation of the nut 250 and the square member 200 easier and making the transmission block 130 more compact.

[0042] At the same time, when the screw 120 and the nut 250 are threadedly driven, the screw 120 can penetrate into the through hole 270 to avoid interference between the screw 120 and the square member 200.

[0043] In some embodiments of the present invention, the first connecting rod 150 and the second connecting rod 170 both include an upper connecting plate 280, a lower connecting plate 290, and a vertical plate 300 connecting the upper connecting plate 280 and the lower connecting plate 290. The upper connecting plate 280, the lower connecting plate 290, and the vertical plate 300 are arranged in an H shape. Two third axle pins 310 are connected between the upper connecting plate 280 and the lower connecting plate 290, and the vertical plate 300 is arranged between the two third axle pins 310.

[0044] Specifically, during installation of the first connecting rod 150 , one end of the first connecting rod 150 is hinged to the transmission block 130 via a third shaft pin 310 , and the other end of the first connecting rod 150 is hinged to the first scissors 140 via the third shaft pin 310 .

[0045] During installation of the second connecting rod 170 , one end of the second connecting rod 170 is hinged to the transmission block 130 via a third shaft pin 310 , and the other end of the second connecting rod 170 is hinged to the second scissors 160 via the third shaft pin 310 .

[0046] The upper connecting plate 280, the lower connecting plate 290 and the vertical plate 300 are arranged in an H-shape, which is beneficial to improving the strength of the first connecting rod 150 and the second connecting rod 170, so that the first connecting rod 150 and the second connecting rod 170 can transmit greater force and reduce the risk of the first connecting rod 150 and the second connecting rod 170 breaking.

[0047] In some embodiments of the present invention, referring to Figure 2 The first scissors 140 and the second scissors 160 have blades 330 and positioning grooves 340 for accommodating the blades 330 on opposite sides, so that the blades 330 can be replaced after being damaged. At the same time, the positioning grooves 340 facilitate the installation of the blades 330.

[0048] In some embodiments of the present invention, a positioning pin 350 is provided on the side wall of the positioning groove 340, and the blade 330 is provided with a pin hole to accommodate the positioning pin 350. Therefore, the positioning pin 350 is conducive to improving the installation accuracy of the blade 330 and improving the shearing accuracy.

[0049] Throughout this specification, references to terms such as "one embodiment, some embodiments, exemplary embodiments, examples, specific examples, or some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0050] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An electric scissors, characterized in that: include: Bracket (100); A motor (110) is provided on the bracket (100); A transmission assembly comprising a screw (120) and a transmission block (130) threadedly driven by the screw (120), wherein the screw (120) is coaxially connected to an output shaft of the motor (110); A first pair of scissors (140) is hingedly mounted on the bracket (100), a first connecting rod (150) is disposed between the first pair of scissors (140) and the transmission block (130), and the first connecting rod (150) hinges the first pair of scissors (140) and the transmission block (130); A second pair of scissors (160) is hingedly mounted on the bracket (100), the second pair of scissors (160) and the first pair of scissors (140) are arranged opposite to each other, a second connecting rod (170) is provided between the second pair of scissors (160) and the transmission block (130), and the second connecting rod (170) is hingedly connected to the second pair of scissors (160) and the transmission block (130); A guide assembly comprises a roller (180) and a guide groove (190), wherein the roller (180) is arranged on one of the bracket (100) and the transmission block (130), and the guide groove (190) is arranged on the other of the bracket (100) and the transmission block (130), and when the transmission block (130) moves, the roller (180) moves along the guide groove (190).

2. The electric scissors according to claim 1, characterized in that: The transmission block (130) comprises a square member (200), wherein guide grooves (190) are respectively provided on the upper and lower sides of the square member (200), and the guide grooves (190) extend along the length direction of the screw rod (120).

3. The electric scissors according to claim 2, characterized in that: The bracket (100) comprises an upper side plate (210) and a lower side plate (220), wherein the upper side plate (210) and the lower side plate (220) restrict the square member (200) in the up and down directions.

4. The electric scissors according to claim 3, characterized in that: A first axle pin (230) and a second axle pin (240) are provided between the upper side plate (210) and the lower side plate (220); the first scissors (140) are provided on the first axle pin (230); and the second scissors (160) are provided on the second axle pin (240).

5. The electric scissors according to claim 2, characterized in that: The transmission block (130) comprises a nut (250) and a mounting portion (260) connected to the nut (250); the nut (250) and the screw rod (120) are arranged for threaded transmission; a through hole (270) for accommodating the nut (250) is provided on a horizontal side of the square member (200); and the mounting portion (260) is connected to one side of the square member (200) via a bolt.

6. The electric scissors according to claim 1, characterized in that: The first connecting rod (150) and the second connecting rod (170) both comprise an upper connecting plate (280), a lower connecting plate (290), and a vertical plate (300) connecting the upper connecting plate (280) and the lower connecting plate (290); the upper connecting plate (280), the lower connecting plate (290), and the vertical plate (300) are arranged in an H-shape; two third axle pins (310) are connected between the upper connecting plate (280) and the lower connecting plate (290); and the vertical plate (300) is arranged between the two third axle pins (310).

7. The electric scissors according to claim 1, characterized in that: The roller (180) is a bearing.

8. The electric scissors according to claim 7, characterized in that: The bearing is coaxially provided with a rotating shaft (320), and the bearing is connected to the bracket (100) via the rotating shaft (320).

9. The electric scissors according to claim 1, characterized in that: The first scissors (140) and the second scissors (160) each have a blade (330) and a positioning groove (340) for accommodating the blade (330) on one opposite side.

10. The electric scissors according to claim 9, characterized in that: A positioning pin (350) is provided on the side wall of the positioning groove (340), and the blade (330) is provided with a pin hole for accommodating the positioning pin (350).

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