Rotatable shearing device

Abstract

The invention relates to a rotatable shearing device which comprises a shear mechanism and a driving mechanism, the driving mechanism is connected to the shear mechanism, the axis of the driving mechanism and the axis of the shear mechanism are not overlapped, and the driving mechanism is used for driving the shear mechanism to revolve around the axis of a driving shaft so as to adjust the shearing position of the shear mechanism. The shear mechanism is driven by the driving mechanism to rotate by a certain angle, the shear mechanism can accurately move to the multiple preset stations distributed in the circumferential direction of the axis of the driving mechanism, and therefore shearing of targets at different positions is achieved.

Description

Technical Field

[0001] This invention relates to the field of automated processing equipment technology, and more specifically to a rotatable shearing device. Background Technology

[0002] On automated injection molding production lines, after the product is demolded, it needs to be separated from the gating system (i.e., the "sprue"). Currently, the commonly used automated shearing solutions are mainly divided into two categories: one is to use multiple pneumatic shears arranged in a contour-following or array pattern according to the product outline, and to send the shears to the shearing point through an external moving mechanism; the other is to use an external rotating worktable to drive one or more shears to switch workstations.

[0003] The aforementioned existing technical solutions have obvious shortcomings: the solution using multiple scissors results in high equipment costs, complex structure, large space occupation, and cumbersome control; while the solution relying on an external rotary table introduces an additional drive and positioning system, which not only increases the overall cost and potential for failure, but is also difficult to arrange in a compact fixture space, and the positioning accuracy is easily affected by the cumulative error of the external mechanism.

[0004] Especially in situations requiring sequential shearing of multiple sprues on a single product (e.g., sprues in four directions), existing solutions either require four independent shears and drive mechanisms, or a high-precision external rotary indexing mechanism. This undoubtedly increases the manufacturing cost and maintenance difficulty of the automation unit, limiting its application in low-cost, high-efficiency production scenarios. Summary of the Invention

[0005] Based on the above description, the present invention provides a rotatable shearing device, which aims to solve the problem that the shears in existing automated injection molding production lines cannot achieve multi-station shearing.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A rotatable shearing device, comprising: Scissor mechanism; A drive mechanism is connected to the scissor mechanism. The axis of the drive mechanism is not coincident with the axis of the scissor mechanism. The drive mechanism is used to drive the scissor mechanism to revolve around the axis of the drive shaft in order to adjust the cutting position of the scissor mechanism.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the scissor mechanism includes a first cylinder, a spring scissor, and a first piston. The first cylinder has a first movable cavity and a first input hole communicating with the first movable cavity. The spring scissor is located at one end of the first cylinder away from the drive mechanism, and the handle of the spring scissor extends into the first movable cavity. The first piston is located in the first movable cavity and can move axially along the first movable cavity. A first conical hole is provided at one end of the first piston near the handle.

[0009] Furthermore, the scissor mechanism includes a first elastic element, one end of which abuts against the inner wall of the first movable cavity, and the other end of which abuts against the end of the first piston near the first elastic element.

[0010] Furthermore, the driving mechanism includes a second cylinder, a turntable, and a rotating assembly. The turntable is located at one end of the second cylinder near the scissor mechanism, so that the turntable and the second cylinder form a second movable cavity. The axis of the turntable is coaxial with the axis of the second cylinder. The turntable is connected to the first cylinder, and the axis of the turntable is eccentrically set with respect to the axis of the first cylinder. The rotating assembly is located in the second movable cavity and is connected to the turntable. The rotating assembly is used to drive the turntable to rotate around its own axis.

[0011] Furthermore, the second cylinder body has a second input hole communicating with the second movable cavity. The rotating assembly includes a rotating shaft, a guide member, a guide rod, and a second piston. The axis of the rotating shaft is coaxial with the axis of the turntable. The rotating shaft can move axially along the second movable cavity. The rotating shaft is connected to the turntable through the guide member. The rotating shaft has a guide groove. There are two guide rods, which are symmetrically arranged about the axis of the rotating shaft. The end of each guide rod near the rotating shaft extends into the guide groove, and the end of each guide rod away from the rotating shaft is connected to the second cylinder body. The second piston is sleeved on the rotating shaft and can move axially along the rotating shaft. The second piston is located below the second input hole.

[0012] Furthermore, the guide includes a rectangular guide post and a guide sleeve. One end of the rectangular guide post is connected to the end of the rotating shaft near the turntable. The shape of the inner cavity of the guide sleeve is adapted to the shape of the rectangular guide post. The guide sleeve is sleeved on the rectangular guide post. The end of the guide sleeve away from the second piston is connected to the turntable.

[0013] Furthermore, the drive mechanism includes a locking assembly disposed within the second movable cavity, the locking assembly being used to restrict the rotation of the rotating shaft after the shearing position of the scissor mechanism is adjusted.

[0014] Further, the locking assembly includes a bracket, limiting balls, and a third piston. The guide sleeve is connected to the side wall of the second movable cavity through a seal. The seal divides the second movable cavity into a first movable area and a second movable area. The second input hole communicates with the first movable area. A third input hole communicating with the second movable area is provided on the second cylinder body. The guide sleeve has a plurality of ball sockets arranged circumferentially at intervals. The bracket and the third piston are located between the turntable and the seal. The bracket and the third piston are arranged sequentially from top to bottom along the axial direction of the guide sleeve. The third piston is sleeved on the guide sleeve. A second conical hole is provided on the side of the third piston near the bracket. The bracket has a receiving hole corresponding to each ball socket. The number of limiting balls is the same as the number of receiving holes. The limiting balls are correspondingly provided in the receiving holes. The third input hole is located below the third piston.

[0015] Furthermore, the locking assembly includes a second elastic member, one end of which abuts against the bracket, and the other end of which abuts against the end of the third piston near the bracket.

[0016] Furthermore, the second cylinder body is provided with a fourth input hole, the guide sleeve is provided with a first conveying channel communicating with the fourth input hole, the turntable is provided with a second conveying channel communicating with the first conveying channel, and the end of the second conveying channel opposite to the first conveying channel is connected to the first input hole.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: (1) The present invention drives the scissor mechanism to rotate at a certain angle through the drive mechanism, and the scissor mechanism can move precisely to multiple preset work positions distributed in the circumferential direction around the axis of the drive mechanism, thereby realizing the shearing of targets at different positions.

[0018] (2) The present invention locks the rotating shaft reliably after the rotating component drives the scissor mechanism to rotate to the target position. This prevents the rotating shaft from rotating unexpectedly due to vibration or external interference during subsequent shearing operations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a right view of a rotatable shearing device provided in an embodiment of the present invention; Figure 2 This is a left view of a rotatable shearing device provided in an embodiment of the present invention; Figure 3 This is a cross-sectional view of a rotatable shearing device provided in an embodiment of the present invention; Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle; Figure 5 This is a front view of the rotation axis in an embodiment of the present invention; Figure 6 This is a rear view of the rotating shaft in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the third piston in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: 100. Scissors mechanism; 110. First cylinder; 111. First movable cavity; 112. First input hole; 120. Spring scissors; 121. Handle; 130. First piston; 131. First conical hole; 140. First elastic element; 200. Drive mechanism; 210. Second cylinder; 211. Second movable chamber; 2111. Seal; 2112. First movable area; 2113. Second movable area; 212. Second input port; 213. Third input port; 214. Fourth input port; 215. Housing; 216. End cap; 2161. Clearance hole; 220. Turntable; 221. First conveying channel; 230. Rotating assembly; 231. Rotation Shaft; 2311, guide groove; 232, guide component; 2321, rectangular guide post; 2322, guide sleeve; 23221, ball socket; 23222, second conveying channel; 233, guide rod; 234, second piston; 235, bearing; 240, locking assembly; 241, bracket; 2411, receiving hole; 242, limiting ball; 243, third piston; 2431, second tapered hole; 244, second elastic component. Detailed Implementation

[0022] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0024] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0025] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0026] Reference Figures 1 to 3 As shown, the present invention provides a technical solution: a rotatable shearing device, including a shearing mechanism 100 and a driving mechanism 200. The driving mechanism 200 is connected to the shearing mechanism 100. The axis of the driving mechanism 200 is not coincident with the axis of the shearing mechanism 100. The driving mechanism 200 is used to drive the shearing mechanism 100 to revolve around the axis of the driving shaft in order to adjust the shearing position of the shearing mechanism 100.

[0027] For example, the drive mechanism 200 can be a motor, etc.

[0028] In this embodiment, the scissor mechanism 100 is driven to rotate by the drive mechanism 200 at a certain angle (e.g., 90° each time). The scissor mechanism 100 can move precisely to multiple preset workstations (e.g., 0° workstation, 90° workstation, 180° workstation, 270° workstation) distributed around the axis of the drive mechanism 200, thereby realizing the shearing of targets at different positions.

[0029] Reference Figures 1 to 3 As shown, in some embodiments, the scissor mechanism 100 includes a first cylinder 110, a spring scissor 120, and a first piston 130. The first cylinder 110 has a first movable cavity 111 and a first input hole 112 communicating with the first movable cavity 111. The spring scissor 120 is located at one end of the first cylinder 110 away from the drive mechanism 200, and the handle portion 121 of the spring scissor 120 extends into the first movable cavity 111. The first piston 130 is located in the first movable cavity 111 and can move axially along the first movable cavity 111. A first tapered hole 131 is provided at one end of the first piston 130 near the handle portion 121.

[0030] In this embodiment, when fluid enters the first movable chamber 111 through the first inlet hole 112, the fluid pushes the first piston 130 upward. Since the handle portion 121 is inserted into the first conical hole 131 of the first piston 130, the upward movement of the first piston 130, through the oblique squeezing action of the first conical hole 131, forces the two handle portions 121 to converge towards the center, thereby causing the blade head of the spring shears 120 to close, achieving the shearing action. After the fluid exits the first movable chamber 111, the first piston 130 and the blade head of the spring shears 120 return to their original positions. Through the first conical hole 131, the vertical linear motion of the first piston 130 is smoothly and reliably converted into the horizontal tightening motion of the handle portion 121, resulting in high motion conversion efficiency. Furthermore, the relationship between shearing force and stroke can be precisely controlled through the conical angle, ensuring a smooth shearing process with minimal impact on the product.

[0031] Reference Figure 3 As shown, in some embodiments, the scissor mechanism 100 includes a first elastic member 140, one end of which abuts against the inner wall of the first movable cavity 111, and the other end of which abuts against the end of the first piston 130 near the first elastic member 140.

[0032] For example, the first elastic element 140 can be a spring or an elastic rubber ring, etc.

[0033] In this embodiment, the main function of the first elastic element 140 is to provide an automatic reset function for the scissor mechanism 100. After the cutting action is completed, when the fluid in the first active chamber 111 is discharged, the first piston 130 is pushed downwards back to its initial position under the elastic force stored in the first elastic element 140. The downward movement of the first piston 130 releases the clamping of the handle portion 121 through the first conical hole 131, and the spring scissors 120 open under their own elasticity, preparing for the next cutting. This ensures that the scissors automatically remain in the open safe position under depressurization, while making the entire cutting action cycle faster and more reliable.

[0034] Reference Figure 3 As shown, in some embodiments, the drive mechanism 200 includes a second cylinder 210, a turntable 220, and a rotating assembly 230. The turntable 220 is disposed at one end of the second cylinder 210 near the scissor mechanism 100, so that the turntable 220 and the second cylinder 210 surround to form a second movable cavity 211. The axis of the turntable 220 is coaxial with the axis of the second cylinder 210. The turntable 220 is connected to the first cylinder 110, and the axis of the turntable 220 is eccentrically disposed with respect to the axis of the first cylinder 110. The rotating assembly 230 is disposed in the second movable cavity 211 and is connected to the turntable 220. The rotating assembly 230 is used to drive the turntable 220 to rotate around its own axis.

[0035] In this embodiment, the rotating component 230 serves as a power source, driving the turntable 220 to rotate. Since the scissor mechanism 100 is fixed to the eccentric position of the turntable 220 via the first cylinder 110, the rotation of the turntable 220 is directly converted into the revolution of the scissor mechanism 100 around the axis of the second cylinder 210. Furthermore, the magnitude of the eccentricity directly determines the radius of the working trajectory circle of the scissor mechanism 100, which can be designed according to the actual workstation layout requirements to improve flexibility.

[0036] Reference Figures 3 to 6As shown, in some embodiments, the second cylinder 210 has a second input hole 212 communicating with the second movable cavity 211. The rotating assembly 230 includes a rotating shaft 231, a guide member 232, a guide rod 233, and a second piston 234. The axis of the rotating shaft 231 is coaxial with the axis of the turntable 220. The rotating shaft 231 can move axially along the second movable cavity 211. The rotating shaft 231 is connected to the turntable 220 through the guide member 232. The rotating shaft 231 has a guide groove 23. 11. There are two guide rods 233. The two guide rods 233 are symmetrically arranged about the axis of the rotating shaft 231. The end of each guide rod 233 near the rotating shaft 231 extends into the guide groove 2311. The end of each guide rod 233 away from the rotating shaft 231 is connected to the second cylinder 210. The second piston 234 is sleeved on the rotating shaft 231. The second piston 234 can move along the axial direction of the rotating shaft 231. The second piston 234 is located below the second input hole 212.

[0037] For example, the second piston 234 and the rotating shaft 231 can be a transition fit or an interference fit. The guide member 232 can include multiple sliding protrusions, all of which are provided on the inner wall of the guide sleeve 2322. The rotating shaft 231 has a groove corresponding to each sliding protrusion. The sliding protrusions and the grooves correspond one-to-one, and the sliding protrusions can slide along the grooves.

[0038] In this embodiment, when fluid enters the second active chamber 211 from the second inlet port 212, it pushes the second piston 234 downward. Since the second piston 234 is fixedly connected to the rotating shaft 231, the downward movement of the second piston 234 will cause the rotating shaft 231 to move downward as well. Because the guide groove 2311 of the rotating shaft 231 engages with the fixed guide rod 233, the downward movement of the rotating shaft 231 generates a torque that forces the rotating shaft 231 to rotate around its own axis, thereby driving the rotating shaft 231 to rotate by a predetermined angle. Simultaneously, the rotating shaft 231 transmits the rotational motion to the turntable 220 through the guide member 232. Thus, precise indexing rotation is achieved through the linear motion of the second piston 234, eliminating the need for a motor and complex reduction mechanism, making the rotating assembly 230 low-cost and highly resistant to contamination.

[0039] Reference Figures 3 to 4 As shown, in some embodiments, the guide member 232 includes a rectangular guide post 2321 and a guide sleeve 2322. One end of the rectangular guide post 2321 is connected to the end of the rotating shaft 231 near the turntable 220. The shape of the inner cavity of the guide sleeve 2322 is adapted to the shape of the rectangular guide post 2321. The guide sleeve 2322 is sleeved on the rectangular guide post 2321. The end of the guide sleeve 2322 away from the second piston 234 is connected to the turntable 220.

[0040] In this embodiment, the rectangular guide post 2321 and the guide sleeve 2322 form a sliding spline structure. On the one hand, it ensures that the rotating shaft 231 remains stable and does not deflect when moving axially; on the other hand, it transmits torque. When the rotating shaft 231 rotates, the rectangular cross-section can effectively transmit torque to the guide sleeve 2322, thereby driving the turntable 220 to rotate, while allowing the two to slide relative to each other in the axial direction.

[0041] Reference Figure 3 As shown, in some embodiments, the rotating assembly 230 includes a bearing 235, which is sleeved on the rotating shaft 231 and located below the second piston 234.

[0042] In this embodiment, the main function of the bearing 235 is to support the rotating shaft 231 and bear its radial load. When the rotating shaft 231 rotates and bears the eccentric torque brought by the scissor mechanism 100, the bearing 235 can effectively reduce the rotational friction resistance and ensure smooth rotation.

[0043] Reference Figures 3 to 4 As shown, in some embodiments, the drive mechanism 200 includes a locking assembly 240 disposed in the second movable cavity 211, which is used to restrict the rotation of the rotating shaft 231 after the shearing position of the scissor mechanism 100 is adjusted.

[0044] In this embodiment, the locking component 240 immediately engages after the rotating component 230 drives the scissor mechanism 100 to rotate to the target position, reliably locking the rotating shaft 231 to prevent it from rotating unexpectedly due to vibration or external interference during subsequent shearing operations.

[0045] Reference Figures 3 to 4 and Figure 7As shown, in some embodiments, the locking assembly 240 includes a bracket 241, a limiting ball 242, and a third piston 243. The guide sleeve 2322 is connected to the side wall of the second movable cavity 211 via a seal 2111. The seal 2111 divides the second movable cavity 211 into a first movable area 2112 and a second movable area 2113. The second input hole 212 communicates with the first movable area 2112. The second cylinder 210 has a third input hole 213 communicating with the second movable area 2113. The guide sleeve 2322 has a plurality of ball sockets 23221 arranged circumferentially. The bracket 241 and... The third piston 243 is located between the turntable 220 and the seal 2111. The bracket 241 and the third piston 243 are arranged sequentially from top to bottom along the axial direction of the guide sleeve 2322. The third piston 243 is sleeved on the guide sleeve 2322. The third piston 243 has a second conical hole 2431 on the side of the bracket 241. The bracket 241 has a receiving hole 2411 corresponding to each ball socket 23221. The number of limiting balls 242 is the same as the number of receiving holes 2411. The limiting balls 242 are arranged one-to-one in the receiving holes 2411. The third input hole 213 is located below the third piston 243.

[0046] For example, the seal 2111 can be an O-ring, etc. The bracket 241 can be fixed to the second cylinder 210, etc. The limiting ball 242 can be a steel column, etc. The guide sleeve 2322 and the rotating shaft 231 can be a transition fit or an interference fit, etc. In an embodiment of the present invention, the rotating shaft 231 has a flat section, and the shape of the inner cavity of the guide sleeve 2322 is adapted to the shape of the flat section, and the flat section is connected to the inner cavity of the guide sleeve 2322.

[0047] In this embodiment, in the unlocked state: when there is no fluid input to the third input port 213, the third piston 243 is in the lower limit position, and the conical surface of the second conical hole 2431 is away from the limiting ball 242. The limiting ball 242 can move freely within the receiving hole 2411 of the bracket 241 without obstructing the rotation of the guide sleeve 2322. In the locked state: when locking is required, pressurized fluid is introduced into the third input port 213, pushing the third piston 243 upward. As the third piston 243 moves upward, the conical surface of the second conical hole 2431 gradually presses against all the limiting balls 242, forcing them to move radially in the axial direction. Since the bracket 241 is fixed and does not rotate, the compressed limiting balls 242 are partially embedded in the ball socket 23221, forming a "wedge" effect between the ball socket 23221 and the conical hole slope, thereby generating a frictional torque to prevent the guide sleeve 2322 from rotating.

[0048] Reference Figures 3 to 4 As shown, in some embodiments, the locking assembly 240 includes a second elastic member 244, one end of which abuts against the bracket 241, and the other end of which abuts against the end of the third piston 243 near the bracket 241.

[0049] For example, the second elastic element 244 can be a spring or an elastic rubber ring, etc.

[0050] In this embodiment, after the fluid in the third input hole 213 is discharged, the third piston 243 is pushed back to its initial position under the elastic force of the second elastic element 244. The conical surface of the second conical hole 2431 then moves away from the limiting ball 242. The limiting ball 242 is disengaged from the ball socket 23221 under the slight rotation of the guide sleeve 2322, the locking state is automatically released, and the rotating shaft 231 returns to a state where it can rotate freely.

[0051] Reference Figures 1 to 3 As shown, in some embodiments, the second cylinder 210 is provided with a fourth input hole 214, the guide sleeve 2322 is provided with a first conveying channel 221 communicating with the fourth input hole 214, the turntable 220 is provided with a second conveying channel 23222 communicating with the first conveying channel 221, and the end of the second conveying channel 23222 away from the first conveying channel 221 is connected to the first input hole 112.

[0052] In this embodiment, fluid enters through the fourth inlet port 214, passes through the first delivery channel 221, the second delivery channel 23222, and the first inlet port 112, and finally reaches the first active chamber 111. This simplifies the external piping layout and eliminates potential hazards such as leaks and ruptures caused by pipe twisting and wear.

[0053] Reference Figure 3 As shown, in some embodiments, the second cylinder 210 includes a housing 215 and an end cap 216. The end cap 216 is disposed at one end of the housing 215 away from the scissor mechanism 100, so that the housing 215, the end cap 216 and the turntable 220 together form a second active cavity 211.

[0054] In this embodiment, the split second cylinder 210 facilitates the processing, assembly, debugging, and subsequent maintenance of parts, thereby improving work efficiency.

[0055] Reference Figure 3 As shown, in some embodiments, the end cap 216 has a clearance hole 2161 at one end near the rotating shaft 231.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotatable shearing device, characterized in that, include: Scissor mechanism (100); A drive mechanism (200) is connected to the scissor mechanism (100). The axis of the drive mechanism (200) is not coincident with the axis of the scissor mechanism (100). The drive mechanism (200) is used to drive the scissor mechanism (100) to revolve around the axis of the drive shaft in order to adjust the cutting position of the scissor mechanism (100).

2. The rotatable shearing device according to claim 1, characterized in that, The scissor mechanism (100) includes a first cylinder (110), a spring scissor (120), and a first piston (130). The first cylinder (110) has a first movable cavity (111). The first cylinder (110) has a first input hole (112) communicating with the first movable cavity (111). The spring scissor (120) is located at one end of the first cylinder (110) away from the drive mechanism (200). The handle portion (121) of the spring scissor (120) extends into the first movable cavity (111). The first piston (130) is located in the first movable cavity (111). The first piston (130) can move axially along the first movable cavity (111). The first piston (130) has a first conical hole (131) at one end near the handle portion (121).

3. The rotatable shearing device according to claim 2, characterized in that, The scissor mechanism (100) includes a first elastic element (140), one end of which abuts against the inner wall of the first movable cavity (111), and the other end of which abuts against the end of the first piston (130) near the first elastic element (140).

4. The rotatable shearing device according to claim 2 or 3, characterized in that, The drive mechanism (200) includes a second cylinder (210), a turntable (220), and a rotating assembly (230). The turntable (220) is located at one end of the second cylinder (210) near the scissor mechanism (100) so that the turntable (220) and the second cylinder (210) form a second movable cavity (211). The axis of the turntable (220) is coaxial with the axis of the second cylinder (210). The turntable (220) is connected to the first cylinder (110). The axis of the turntable (220) is eccentrically set with respect to the axis of the first cylinder (110). The rotating assembly (230) is located in the second movable cavity (211) and is connected to the turntable (220). The rotating assembly (230) is used to drive the turntable (220) to rotate around its own axis.

5. The rotatable shearing device according to claim 4, characterized in that, The second cylinder (210) has a second input hole (212) communicating with the second movable cavity (211). The rotating assembly (230) includes a rotating shaft (231), a guide member (232), a guide rod (233), and a second piston (234). The axis of the rotating shaft (231) is coaxial with the axis of the turntable (220). The rotating shaft (231) can move axially along the second movable cavity (211). The rotating shaft (231) is connected to the turntable (220) through the guide member (232). The rotating shaft (231) has a guide groove (2311). The guide rod... There are two guide rods (233), which are symmetrically arranged about the axis of the rotating shaft (231). The end of each guide rod (233) near the rotating shaft (231) extends into the guide groove (2311), and the end of each guide rod (233) away from the rotating shaft (231) is connected to the second cylinder (210). The second piston (234) is sleeved on the rotating shaft (231) and can move along the axial direction of the rotating shaft (231). The second piston (234) is located below the second input hole (212).

6. The rotatable shearing device according to claim 5, characterized in that, The guide member (232) includes a rectangular guide post (2321) and a guide sleeve (2322). One end of the rectangular guide post (2321) is connected to the end of the rotating shaft (231) near the turntable (220). The shape of the inner cavity of the guide sleeve (2322) is adapted to the shape of the rectangular guide post (2321). The guide sleeve (2322) is sleeved on the rectangular guide post (2321). The end of the guide sleeve (2322) away from the second piston (234) is connected to the turntable (220).

7. The rotatable shearing device according to claim 5, characterized in that, The drive mechanism (200) includes a locking assembly (240) disposed in the second active cavity (211), the locking assembly (240) being used to restrict the rotation of the rotating shaft (231) after the shearing position of the scissor mechanism (100) is adjusted.

8. The rotatable shearing device according to claim 6, characterized in that, The locking assembly (240) includes a bracket (241), a limiting ball (242), and a third piston (243). The guide sleeve (2322) is connected to the side wall of the second movable cavity (211) through a seal (2111). The seal (2111) divides the second movable cavity (211) into a first movable area (2112) and a second movable area (2113). The second input hole (212) communicates with the first movable area (2112). The second cylinder (210) has a third input hole (213) that communicates with the second movable area (2113). The guide sleeve (2322) has a plurality of ball sockets (23221) arranged circumferentially. The bracket (241) and the third piston (243) are located in the... Between the turntable (220) and the seal (2111), the bracket (241) and the third piston (243) are arranged sequentially from top to bottom along the axial direction of the guide sleeve (2322). The third piston (243) is sleeved on the guide sleeve (2322). The third piston (243) has a second conical hole (2431) on the side of the bracket (241) near the bracket. The bracket (241) has a receiving hole (2411) corresponding to each ball socket (23221). The number of limiting balls (242) is the same as the number of receiving holes (2411). The limiting balls (242) are arranged one-to-one in the receiving holes (2411). The third input hole (213) is located below the third piston (243).

9. The rotatable shearing device according to claim 8, characterized in that, The locking assembly (240) includes a second elastic element (244), one end of which abuts against the bracket (241), and the other end of which abuts against the end of the third piston (243) near the bracket (241).

10. The rotatable shearing device according to claim 9, characterized in that, The second cylinder (210) is provided with a fourth input hole (214), the guide sleeve (2322) is provided with a first conveying channel (221) communicating with the fourth input hole (214), the turntable (220) is provided with a second conveying channel (23222) communicating with the first conveying channel (221), and the end of the second conveying channel (23222) opposite to the first conveying channel (221) is connected to the first input hole (112).

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