Scissors device

Abstract

The utility model discloses a scissors device, including scissors seat, fixed knife subassembly, transmission part and at least one group of moving knife subassembly, and the integrated drive cylinder of scissors seat, and drive cylinder acts to transmission part, to make transmission part drive moving knife subassembly to the positive direction of first direction movement, transmission part still is provided with reset mechanism between scissors seat, and reset mechanism acts to transmission part, to make transmission part always have the movement tendency of drive moving knife subassembly to the negative direction of first direction movement. The utility model discloses the structure improvement of integrated drive cylinder in scissors seat, makes the scissors device not need to rely on external force drive to realize the line cutting action, has simplified the operation process, has promoted the flexibility of use, has avoided the influence that the improper control of external force strength or the inaccurate grasp of opportunity brings simultaneously, has improved the line cutting precision effectively, has guaranteed the accurate controllable of yarn cutting and clamping action, has strengthened the use convenience and operating reliability of scissors device.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, and in particular to a scissor device. Background Technology

[0002] With the development of the textile industry, textile equipment has been continuously updated and iterated, and its types have become increasingly diverse, giving rise to various models such as rapier looms, rapier looms, and water jet looms. Among them, circular knitting machines are widely used, mainly using pure cotton yarn, various blended yarns, and other chemical fibers as raw materials to weave various knitted fabrics.

[0003] Circular knitting machines are equipped with yarn adjusting shears to cut yarn. For example, a yarn adjusting device for a circular knitting machine, disclosed in Chinese Utility Model Patent (Authorization Announcement No.: CN2345553Y), is used to achieve the yarn cutting function. Its core structure includes two parallel and spaced wall plates, a yarn adjusting clamp, a drive mechanism, an electromagnetic actuator, a main power arm, a yarn cutting control plate, and a yarn cutting and releasing mechanism. The yarn adjusting clamp is mounted on the drive mechanism connected to the electromagnetic actuator. The electromagnetic actuator is linked to the drive mechanism through the main power arm, which is mounted on the wall plate. The yarn cutting control plate is located at the bottom of the wall plate and adapted to the drive mechanism, forming a linkage with the yarn cutting and releasing mechanism. During yarn cutting, external force pushes the roller to drive the releasing swing arm to swing, causing the groove on the push plate to fit tightly with the convex screw. The convex screw acts as the force point, pushing the hinged yarn cutting swing arm, which then swings towards the rear of the yarn adjusting clamp and applies force, ultimately closing the upper and lower shears of the previously released yarn adjusting clamp, completing the yarn cutting and clamping.

[0004] However, the yarn adjusting device for a circular knitting machine disclosed in the prior art relies on an external force to drive a roller to swing the yarn feeding arm, which in turn pushes the yarn-cutting arm through the cooperation of a push plate and a convex screw, ultimately closing the cutting edge of the yarn adjusting clamp. This design, requiring external force, is not only cumbersome to operate and lacks flexibility, but also prone to affecting cutting accuracy due to improper control of the external force or inaccurate timing, resulting in a need to improve overall ease of use and operational stability.

[0005] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] The purpose of this invention is to solve the problem that existing wire trimming devices require external force to cut the wire, which is not only cumbersome in operation and lacks flexibility, but also prone to affecting the cutting accuracy due to improper control of the external force or inaccurate timing. Therefore, a scissor device is proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A scissor device includes a scissor base, a fixed blade assembly, a transmission component, and at least one set of movable blade assemblies. The transmission component is rotatably engaged with the scissor base. The fixed blade assembly is fixedly mounted on the scissor base. The movable blade assembly is slidably engaged with the fixed blade assembly. The transmission component is throttle engaged with the movable blade assembly. The sliding direction of the movable blade assembly is defined as a first direction. The scissor base integrates a drive cylinder that acts on the transmission component, causing the transmission component to move the movable blade assembly in the positive direction of the first direction. A reset mechanism is also provided between the transmission component and the scissor base. The reset mechanism acts on the transmission component, ensuring that the transmission component always has a tendency to move the movable blade assembly in the negative direction of the first direction. The transmission component includes a drive foot, a working foot, and a reset foot. The drive foot is throttle engaged with the drive cylinder to drive the transmission component to rotate along its axis in a second direction. The working foot is throttle engaged with the movable blade assembly to drive the movable blade assembly to slide along the first direction. The reset foot is throttle engaged with the reset mechanism to drive the transmission component to rotate along its axis in a third direction.

[0008] Furthermore, the transmission component also includes a limiting foot, which engages with the scissor seat to limit the maximum angle of rotation of the transmission component in a third direction along its axis.

[0009] Furthermore, the scissor seat is provided with a connecting shaft, and the transmission component is provided with a through hole, through which the transmission component is rotatably mounted on the connecting shaft.

[0010] Furthermore, the scissor seat is provided with a guide rod, the guide rod is provided with a notch, and the reset foot is movably disposed within the notch.

[0011] Furthermore, a piston chamber is provided inside the scissor seat, and the driving cylinder includes a piston and a piston rod. The piston is movably disposed in the piston chamber, one end of the piston rod is fixedly connected to the piston, and the other end of the piston rod extends out of the piston chamber and engages with the driving foot of the transmission component.

[0012] Furthermore, the piston divides the piston chamber into a rod chamber and a rodless chamber, and the scissor seat has a breather hole for connecting the rod chamber to the atmosphere; the scissor seat is provided with a connector, and the rod chamber is connected to the air source through the connector.

[0013] Furthermore, the connector is provided with an air passage, and the peripheral sidewall of the connector is provided with an exhaust hole communicating with the air passage.

[0014] Furthermore, the reset foot is provided with a positioning groove, and the reset mechanism includes a compression spring and a push rod. The first end of the push rod can abut against the positioning groove, and the second end of the push rod is movably connected to the scissor seat. The compression spring is sleeved on the outer periphery of the push rod, and the first end of the push rod has a limiting head. The compression spring is limited between the limiting head and the scissor seat.

[0015] Furthermore, the moving blade assembly includes a moving blade and a pressing plate, and the moving blade and the pressing plate are respectively provided with corresponding insertion slots. The working foot is inserted and engaged with the moving blade assembly through the insertion slots.

[0016] Furthermore, the fixed blade assembly includes a fixed blade and a pressure plate, the moving blade assembly is disposed between the fixed blade and the pressure plate, the fixed blade and the pressure plate are respectively provided with guide grooves, the guide grooves extend along a first direction, and the working foot is inserted into the guide groove and the insertion groove.

[0017] The beneficial effects of this utility model after adopting the above structure are as follows: (1) The scissor device of the present invention includes a scissor seat, a fixed blade assembly, a transmission component, and at least one set of moving blade assemblies. The scissor seat integrates a driving cylinder, which acts on the transmission component to drive the moving blade assembly to move in the positive direction of the first direction. A reset mechanism is also provided between the transmission component and the scissor seat. The reset mechanism acts on the transmission component to ensure that the transmission component always has a tendency to drive the moving blade assembly to move in the negative direction of the first direction. The present invention improves the structure by integrating a driving cylinder into the scissor seat, so that the scissor device can achieve the cutting action without relying on external force, simplifying the operation process and improving the flexibility of use. At the same time, it avoids the influence caused by improper control of external force or inaccurate timing, effectively improving the cutting accuracy and ensuring the precise controllability of yarn cutting and clamping actions. The linkage and cooperation of the various components of the scissor device are smoother and more stable, further enhancing the overall ease of use and operational reliability, and comprehensively optimizing the yarn adjustment and cutting operation effect of the circular knitting machine.

[0018] (2) The scissor device of this utility model includes a driving foot, a working foot, and a reset foot. The driving foot is driven by the driving cylinder to drive the transmission component to rotate in a second direction along its axis. The working foot is driven by the moving blade assembly to drive the moving blade assembly to slide in a first direction. The reset foot is driven by the reset mechanism to drive the transmission component to rotate in a third direction along its axis. In this utility model, the working foot of the transmission component is inserted into the guide groove, and the reset foot of the transmission component is movably disposed in the notch groove. Through this structural design, the transmission component rotates more smoothly under the drive of the driving cylinder and the reset mechanism. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is the utility model Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4 This is the utility model Figure 2 Enlarged schematic diagram of the structure at point B; Figure 5 This is an exploded view of the overall structure of this utility model; Figure 6 This is an exploded view of the moving blade assembly of this utility model; Figure 7 This is a three-dimensional schematic diagram of the transmission component of this utility model. Figure 1 ; Figure 8 This is a three-dimensional schematic diagram of the transmission component of this utility model. Figure 2 ; Figure 9 This is a three-dimensional schematic diagram of the fixed blade assembly of this utility model; Figure 10 This is a three-dimensional schematic diagram of the guide rod of this utility model.

[0021] Figures 1 to 10 The winning number is: 1. Scissor seat; 11. Stop bar; 12. Connecting shaft; 13. Guide rod; 131. Notch groove; 14. Piston chamber; 141. Rod chamber; 142. Rodless chamber; 15. Breathing hole; 16. Connector; 161. Air passage; 162. Exhaust hole; 17. Wire stop bar; 18. Wire stop plate; 2. Fixed blade assembly; 21. Fixed blade; 211. First cutting edge; 22. Pressure plate; 23. Guide groove; 2 4. Mounting slot; 3. Transmission component; 31. Drive foot; 32. Working foot; 33. Reset foot; 331. Positioning slot; 34. Limit foot; 35. Through hole; 4. Moving blade assembly; 41. Moving blade; 411. Second cutting edge; 42. Pressure plate; 43. Insertion slot; 5. Drive cylinder; 51. Piston; 52. Piston rod; 6. Reset mechanism; 61. Compression spring; 62. Push rod; 621. Limit head. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] In the description of this utility model, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, the term "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this utility model, unless otherwise explicitly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this invention are for illustrative purposes only and do not represent the only possible implementation.

[0028] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figures 1 to 10 As shown, a scissor device includes a scissor base 1, a fixed blade assembly 2, a transmission component 3, and at least one set of moving blade assemblies 4. The transmission component 3 is rotatably engaged with the scissor base 1. The fixed blade assembly 2 is fixedly mounted on the scissor base 1. The moving blade assembly 4 is slidably engaged with the fixed blade assembly 2. The transmission component 3 is drively engaged with the moving blade assembly 4. The sliding direction of the moving blade assembly 4 is defined as a first direction. The scissor base 1 integrates a drive cylinder 5, which can act on the transmission component 3 to drive the moving blade assembly 4 to move in the positive direction of the first direction. A further arrangement is provided between the transmission component 3 and the scissor base 1. A reset mechanism 6 is provided, which acts on the transmission member 3 to ensure that the transmission member 3 always has a tendency to drive the moving blade assembly 4 to move in the negative direction of the first direction. The transmission member 3 includes a drive foot 31, a working foot 32, and a reset foot 33. The drive foot 31 is driven by the drive cylinder 5 to drive the transmission member 3 to rotate along its axis in the second direction. The working foot 32 is driven by the moving blade assembly 4 to drive the moving blade assembly 4 to slide in the first direction. The reset foot 33 is driven by the reset mechanism 6 to drive the transmission member 3 to rotate along its axis in the third direction.

[0030] Based on the above embodiments, this utility model provides a scissor device, including a scissor base 1, a fixed blade assembly 2, a transmission component 3, and at least one set of moving blade assemblies 4. The scissor base 1 integrates a drive cylinder 5, which acts on the transmission component 3 to drive the moving blade assembly 4 to move in the positive direction of the first direction. A reset mechanism 6 is also provided between the transmission component 3 and the scissor base 1. The reset mechanism 6 acts on the transmission component 3 to ensure that the transmission component 3 always has a tendency to drive the moving blade assembly 4 to move in the negative direction of the first direction. This utility model, through the structural improvement of integrating the drive cylinder 5 into the scissor base 1, enables the scissor device to perform thread cutting without relying on external force, simplifying the operation process and improving the flexibility of use. At the same time, it avoids the influence caused by improper control of external force or inaccurate timing, effectively improving the thread cutting accuracy and ensuring the precise controllability of yarn cutting and clamping actions. The linkage and cooperation of the various components of the scissor device are smoother and more stable, further enhancing the overall ease of use and operational reliability, and comprehensively optimizing the thread adjustment and cutting operation effect of the circular knitting machine. In this embodiment, as... Figure 2 and Figure 9 As shown, the first direction is the sliding direction of the moving blade 41. When the moving blade 41 moves in the negative direction of the first direction, the first cutting edge 211 and the second cutting edge 411 cooperate to cut the yarn; the second direction is the clockwise direction, and the third direction is the counterclockwise direction, as shown. Figure 8 As shown, when the transmission member 3 rotates along the second direction, it drives the moving blade 41 to slide along the positive direction of the first direction; when the transmission member 3 rotates along the third direction, it drives the moving blade 41 to slide along the negative direction of the first direction. In a further preferred embodiment, seven moving blade assemblies 4 are provided, and the number of piston rods 52 and pistons 51 is the same as the number of moving blade assemblies 4, so as to achieve individual driving of each moving blade assembly 4.

[0031] In another preferred embodiment of this utility model, the scissor seat 1 is provided with a guide rod 13, the guide rod 13 is provided with a notch 131, and the reset foot 33 is movably disposed within the notch 131. In this embodiment, the working foot 32 of the transmission component 3 is inserted into the guide groove 23, and the reset foot 33 of the transmission component 3 is movably disposed within the notch 131. Through this structural design, the transmission component 3 rotates more smoothly under the drive of the drive cylinder 5 and the reset mechanism 6.

[0032] As another preferred embodiment of this utility model, the transmission component 3 further includes a limiting foot 34, which engages with the scissor seat 1 to limit the maximum angle of rotation of the transmission component 3 in a third direction along its axis. The scissor seat 1 is provided with a stop bar 11, which engages with the limiting foot 34 to limit the maximum angle of rotation of the transmission component 3 in a third direction along its axis. The scissor seat 1 is provided with a connecting shaft 12, and the transmission component 3 is provided with a through hole 35, through which the transmission component 3 is rotatably mounted on the connecting shaft 12. The center of the through hole 35 is the axis of the transmission component 3. In this embodiment, as... Figure 3 As shown, the stop lever 11 limits the maximum angle of rotation of the transmission component 3 in a third direction, thereby resetting the moving blade assembly 4 to a predetermined position; and the stop lever 11 improves the stability of the installation of the transmission component 3. The connecting shaft 12 provides a fulcrum for the rotation of the transmission component 3, allowing the transmission component 3 to rotate around the connecting shaft 12 under the drive of the piston rod 52 and the push rod 62.

[0033] In another preferred embodiment of this utility model, the scissor seat 1 has a piston chamber 14. The driving cylinder 5 includes a piston 51 and a piston rod 52. The piston 51 is movably disposed within the piston chamber 14. One end of the piston rod 52 is fixedly connected to the piston 51, and the other end of the piston rod 52 extends out of the piston chamber 14 and engages with the driving foot 31 of the transmission component 3. The piston 51 divides the piston chamber 14 into a rod chamber 141 and a rodless chamber 142. The scissor seat 1 has a breather hole 15 for connecting the rod chamber 141 to the atmosphere. The scissor seat 1 is provided with a connector 16, through which the rod chamber 141 is connected to an air source. The connector 16 is provided with an air passage 161, and the peripheral sidewall of the connector 16 is provided with an exhaust hole 162 communicating with the air passage 161. The reset foot 33 is provided with a positioning groove 331. The reset mechanism 6 includes a compression spring 61 and a push rod 62. The first end of the push rod 62 can abut against the positioning groove 331, and the second end of the push rod 62 is movably connected to the scissor seat 1. The compression spring 61 is sleeved on the outer periphery of the push rod 62, and the first end of the push rod 62 has a limiting head 621. The compression spring 61 is limited between the limiting head 621 and the scissor seat 1. In this embodiment, as shown... Figure 2 and Figure 4As shown, when gas is introduced into the rodless chamber 142 through connector 16, the piston 51, under the action of gas pressure, drives the piston rod 52 to extend. After the piston rod 52 extends, it abuts against the drive foot 31 of the transmission component 3, driving the transmission component 3 to rotate in the second direction against the elastic force of the compression spring 61. At this time, the gas in the rod chamber 141 is discharged from the breather hole 15. When the gas supply to the rodless chamber 142 is stopped, the transmission component 3 rotates in the third direction under the elastic force of the compression spring 61 to drive the piston rod 52 to retract. At this time, the gas in the rodless chamber 142 is discharged through the exhaust hole 162, and the atmosphere enters the rod chamber 141 through the breather hole 15 to balance the air pressure. In this embodiment, the limiting head 621 is used to limit the compression spring 61 from disengaging from the top rod 62. The top rod 62 guides the compression spring 61 to prevent the compression spring 61 from shifting or tilting during the extension and retraction process.

[0034] In another preferred embodiment of this utility model, the fixed blade assembly 2 includes a fixed blade 21 and a pressure plate 22. The moving blade assembly 4 is disposed between the fixed blade 21 and the pressure plate 22. The fixed blade 21 and the pressure plate 22 are respectively provided with guide grooves 23, which extend along a first direction. The working foot 32 is inserted into the guide groove 23 and the insertion groove 43. The fixed blade 21 and the pressure plate 22 are matched to form an installation groove 24, which extends along the first direction. The moving blade assembly 4 is installed in the installation groove 24, and the installation groove 24 corresponds one-to-one with the guide groove 23. The moving blade assembly 4 includes a moving blade 41 and a pressure plate 42. The moving blade 41 and the pressure plate 42 are respectively provided with insertion grooves 43, and the working foot 32 is inserted into the moving blade assembly 4 through the insertion grooves 43. The fixed blade 21 is provided with a first cutting edge 211, and the movable blade 41 is provided with a second cutting edge 411, with the first cutting edge 211 and the second cutting edge 411 facing each other. In this embodiment, as... Figure 2 , Figure 3 and Figure 9 As shown, the moving blade assembly 4 is installed in the mounting groove 24, and the mounting groove 24 corresponds one-to-one with the guide groove 23. The working foot 32 is inserted into the guide groove 23 and the insertion groove 43. The guide groove 23 is used to constrain the sliding trajectory of the working foot 32 and the moving blade assembly 4. The mounting groove 24 is used to improve the sliding stability of the moving blade assembly 4 so as to accurately complete the yarn cutting and clamping action.

[0035] As another preferred embodiment of this utility model, the scissor seat 1 is provided with a wire-blocking rod 17 and a wire-blocking piece 18. In this embodiment, as... Figure 1 As shown, the yarn is guided at both ends by the thread-blocking rod 17 and the thread-blocking piece 18.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A scissor device, comprising a scissor base (1), a fixed blade assembly (2), a transmission component (3), and at least one set of moving blade assemblies (4), wherein the transmission component (3) is rotatably engaged with the scissor base (1), the fixed blade assembly (2) is fixedly disposed on the scissor base (1), the moving blade assembly (4) is slidably engaged with the fixed blade assembly (2), and the transmission component (3) is drive-engaged with the moving blade assembly (4), characterized in that: The sliding direction of the moving blade assembly (4) is defined as the first direction. The scissor seat (1) integrates a driving cylinder (5). The driving cylinder (5) can act on the transmission member (3) so that the transmission member (3) drives the moving blade assembly (4) to move in the positive direction of the first direction. A reset mechanism (6) is also provided between the transmission member (3) and the scissor seat (1). The reset mechanism (6) acts on the transmission member (3) so that the transmission member (3) always has a tendency to drive the moving blade assembly (4) to move in the negative direction of the first direction. The transmission component (3) includes a drive foot (31), a working foot (32), and a reset foot (33). The drive foot (31) is driven by the drive cylinder (5) to drive the transmission component (3) to rotate along its axis in a second direction. The working foot (32) is driven by the moving blade assembly (4) to drive the moving blade assembly (4) to slide along a first direction. The reset foot (33) is driven by the reset mechanism (6) to drive the transmission component (3) to rotate along its axis in a third direction.

2. The scissor device according to claim 1, characterized in that: The transmission component (3) also includes a limiting foot (34), which is engaged with the scissor seat (1) to limit the maximum angle of rotation of the transmission component (3) in the third direction along its axis.

3. The scissor device according to claim 1, characterized in that: The scissor seat (1) is provided with a connecting shaft (12), and the transmission component (3) is provided with a through hole (35). The transmission component (3) is rotatably mounted on the connecting shaft (12) through the through hole (35).

4. A scissor device according to claim 1, characterized in that: The scissor seat (1) is provided with a guide rod (13), the guide rod (13) is provided with a notch (131), and the reset foot (33) is movably disposed in the notch (131).

5. A scissor device according to claim 1, characterized in that: The scissor seat (1) has a piston chamber (14) inside. The drive cylinder (5) includes a piston (51) and a piston rod (52). The piston (51) is movably disposed in the piston chamber (14). One end of the piston rod (52) is fixedly connected to the piston (51). The other end of the piston rod (52) extends out of the piston chamber (14) and is engaged with the drive foot (31) of the transmission component (3) for transmission.

6. A scissor device according to claim 5, characterized in that: The piston (51) divides the piston chamber (14) into a rod chamber (141) and a rodless chamber (142). The scissor seat (1) is provided with a breather hole (15) for connecting the rod chamber (141) and the atmosphere. The scissor seat (1) is provided with a connector (16), and the rod chamber (141) is connected to the air source through the connector (16).

7. A scissor device according to claim 6, characterized in that: The connector (16) is provided with an air passage (161), and the peripheral sidewall of the connector (16) is provided with an exhaust hole (162) that communicates with the air passage (161).

8. A scissor device according to claim 1, characterized in that: The reset foot (33) is provided with a positioning groove (331). The reset mechanism (6) includes a compression spring (61) and a push rod (62). The first end of the push rod (62) can abut against the positioning groove (331), and the second end of the push rod (62) is movably connected to the scissor seat (1). The compression spring (61) is sleeved on the outer periphery of the push rod (62). The first end of the push rod (62) has a limiting head (621), and the compression spring (61) is limited between the limiting head (621) and the scissor seat (1).

9. A scissor device according to claim 1, characterized in that: The moving blade assembly (4) includes a moving blade (41) and a pressing plate (42). The moving blade (41) and the pressing plate (42) are respectively provided with insertion slots (43). The working foot (32) is inserted into the moving blade assembly (4) through the insertion slots (43).

10. A scissor device according to claim 9, characterized in that: The fixed blade assembly (2) includes a fixed blade (21) and a pressure plate (22). The moving blade assembly (4) is disposed between the fixed blade (21) and the pressure plate (22). The fixed blade (21) and the pressure plate (22) are respectively provided with guide grooves (23). The guide grooves (23) extend along a first direction. The working foot (32) is inserted into the guide groove (23) and the insertion groove (43).

Images