Cutter capable of independently driving rotation and displacement of anti-dazzling screen and stage lamp

Abstract

The utility model discloses a cutter capable of independently driving rotation and displacement of an anti-dazzling screen and a stage lamp, and the cutter comprises a rotating frame, the anti-dazzling screen which is arranged on the rotating frame and rotates along with the anti-dazzling screen, a screen driving mechanism, and an angle swing arm pivoting end for controlling the angle of the anti-dazzling screen, a first pivoting point which is static relative to the rotating frame is formed by the common rotating centers of the angle swing arm and the translation rocker arm, an angle connecting rod is pivoted to a second pivoting point on the angle swing arm, and a third pivoting point and a fourth pivoting point on the anti-dazzling screen are respectively pivoted to the angle connecting rod and the translation rocker arm; the first pivoting point, the second pivoting point, the third pivoting point and the fourth pivoting point are sequentially connected to form a parallelogram all the time, and each shading piece corresponds to an angle driving motor which is dynamically coupled with the pivoting end of the angle swing arm. And the translation driving motor is used for driving the translation rocker arm to rotate around the first pivoting point or the angle connecting rod to rotate around the second pivoting point. The rotation angle and the translation position of the anti-dazzling screen are controlled independently, control is simple, and operation is more stable.

Description

Technical Field

[0001] This utility model relates to the field of beam shaping technology, and more specifically, to a cutter and stage light with independently driven rotation and displacement of a light-shielding plate. Background Technology

[0002] To achieve rich lighting effects, stage lights utilize light-shielding plates to cut the beam into various shapes. Some scenarios require the light-shielding plate to enter the beam at a preset rotation angle and then translate within the beam according to this preset rotation angle. Currently, light-shielding plates are driven by two motors working together to adjust their position and angle. These positions and angles influence each other. For example, in the driving structure disclosed in patent CN104854400B, two motors are each pivotally connected to the light-shielding plate via a two-linkage mechanism, and the light-shielding plate's movement trajectory is constrained by a guide structure. With this driving structure, the two motors must constantly fine-tune the light-shielding plate during translation to ensure its angle remains constant. This control is quite complex, and it's difficult to guarantee that the light-shielding plate won't vibrate. When projecting the beam from a distance, even slight vibrations become very noticeable, affecting the viewing experience. Utility Model Content

[0003] To overcome at least one of the defects described in the prior art, this utility model provides a cutter with independently driven rotation and displacement of the light-shielding plate, which can enable the light-shielding plate to enter the light beam at a preset rotation angle and to perform stable translation according to this preset rotation angle.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a cutter with independently driven rotation and displacement of light-shielding plates, including a rotating frame driven by a frame driving mechanism, light-shielding plates disposed on the rotating frame and rotating therewith, and a plate driving mechanism. The light-shielding plates are arranged in at least two pairs. A translational rocker arm is pivotally connected to the pivot end of an angle swing arm that controls the rotation angle of the light-shielding plates. The common rotation center of the angle swing arm and the translational rocker arm forms a first pivot point that is stationary relative to the rotating frame. An angle connecting rod is pivotally connected to a second pivot point on the free end of the angle swing arm. The third and fourth pivot points on the plate are pivotally connected to the angle connecting rod and the translation rocker arm, respectively. The lines connecting the first, second, third, and fourth pivot points in sequence always form a parallelogram. Each light-shielding plate corresponds to a plate driving mechanism. The plate driving mechanism includes an angle driving motor that is dynamically coupled to the pivot end of the angle rocker arm to drive the angle rocker arm to rotate around the first pivot point, and a translation driving motor that drives the translation rocker arm to rotate around the first pivot point or the angle connecting rod to rotate around the second pivot point.

[0005] The cutter's blade driving mechanism, which independently drives the rotation and displacement of the light-shielding plate, includes an angle drive motor that controls the rotation angle of the light-shielding plate and a translation drive motor that controls the translation position of the light-shielding plate. Since the pivot points of the angle swing arm, the angle connecting rod, the light-shielding plate, and the translation rocker arm always form a parallelogram when connected sequentially, when the translation drive motor drives the translation rocker arm to rotate around the first pivot point or the angle connecting rod to rotate around the second pivot point, thereby moving the light-shielding plate, if the angle drive motor does not drive the angle swing arm to rotate (i.e., the direction of the line connecting the first and second pivot points remains unchanged), then the direction of the line connecting the third and fourth pivot points will also remain unchanged (opposite sides of the parallelogram are always parallel), and the rotation angle of the light-shielding plate will naturally remain constant. The light-shielding sheet will only translate under the drive of the translation drive motor; similarly, if the translation drive motor does not drive the translation rocker arm to rotate (i.e., the fourth pivot point is fixed) or the angle linkage to rotate (i.e., the third pivot point is fixed), but only the angle drive motor drives the angle swing arm to rotate, then the rotation angle of the light-shielding sheet will also follow the rotation of the angle swing arm, thereby changing its own rotation angle without changing its position. Furthermore, due to the power coupling between the pivot end of the angle drive motor and the angle swing arm, the space occupied by the power transmission components between the angle drive motor and the angle swing arm can be effectively reduced. The control of the rotation angle and translation position of the light-shielding sheet of the cutter, which is driven independently by the rotation and displacement of the light-shielding sheet, is independent and does not affect each other, making control simpler and the operation of the light-shielding sheet more stable and less prone to vibration.

[0006] Furthermore, the translation drive motor drives the translation rocker arm or the angle linkage to rotate via a linkage assembly. The linkage assembly has a simple structure and stable transmission.

[0007] Furthermore, the linkage assembly includes a translational swing arm fixedly connected to the rotating shaft of the translational drive motor, and a translational link with one end pivotally connected to the translational swing arm and the other end pivotally connected to the translational rocker arm or the angle linkage. The two-link structure has precisely controllable degrees of freedom, and one angle of the translational drive motor corresponds to one position of the light-shielding plate, in a one-to-one correspondence.

[0008] Furthermore, the middle portion of the translational swing arm or the angled link bends away from the rotation center of the rotating frame. This bending allows it to avoid obstacles on the components of the cutter, facilitating a wide range of rotation for the translational swing arm or the angled link.

[0009] Furthermore, the translation link is pivotally connected to the translation rocker arm, and the pivot point is located on the side of the fourth pivot point away from the first pivot point. This effectively avoids interference between the translation link and the angle link, thereby ensuring the smooth operation of the plate drive mechanism.

[0010] Furthermore, after passing the fourth pivot point, the translation rocker arm bends away from the rotation center of the rotating frame and pivots with the translation link. This reduces the length of the translation link, preventing it from being too long and occupying too much space, and the bending allows it to avoid obstructing components on the cutter.

[0011] Furthermore, the light-shielding plate has a slender connecting piece protruding in a direction away from the rotation center of the rotating frame, and the third pivot point and the fourth pivot point are located on the connecting piece. The light-shielding plate only has the slender connecting piece protruding and pivotally connected to the angle connecting rod and the translation rocker arm, so that when the light-shielding plate rotates, the range of motion occupied by the connecting piece is small.

[0012] Furthermore, it also includes a displacement limiting component that restricts the rotation of the translational swing arm, thereby limiting the maximum and minimum displacement of the light-shielding plate. The displacement limiting component can prevent the translational swing arm from rotating beyond its range, thus avoiding interference with the translational linkage or an angle exceeding 180 degrees with the translational linkage.

[0013] Furthermore, the angle swing arm is fixedly connected to the rotating shaft of the angle drive motor, and the translational rocker arm is pivotally connected to the rotating shaft of the angle drive motor, with the first pivot point located on the rotation axis of the rotating shaft of the angle drive motor. The power transmission components between the angle drive motor and the angle swing arm are omitted, minimizing space requirements.

[0014] Furthermore, it also includes an angle limiting member that restricts the rotation of the angle swing arm, thereby limiting the maximum and minimum angles of the light-shielding plate. The angle limiting member can prevent interference between the angle linkage and the translational rocker arm.

[0015] Furthermore, the light-shielding plates are arranged in two pairs, with each pair located on one side of a white circular plate. A white circular hole is formed on the white circular plate, and the light-shielding plates are arranged around the white circular hole. When the cutter is in use, the focal point of the light beam is generally positioned near the white circular hole. By placing the two pairs of light-shielding plates on either side of the white circular plate, all the light-shielding plates can be brought as close as possible to the focal point of the light beam, thus ensuring clear imaging. The arrangement of the two pairs of light-shielding plates around the white circular hole allows for cutting the light beam from multiple directions.

[0016] Furthermore, each pair of light-shielding plates is arranged opposite to each other and separated by a partition, with the arrangement directions of the two pairs of light-shielding plates perpendicular to each other. The partition can prevent adjacent light-shielding plates from interfering with each other, and the perpendicular arrangement directions of the two pairs of light-shielding plates can cut the light beam into a symmetrical shape.

[0017] Furthermore, it also includes a base plate located below all the light-shielding sheets and a pressure plate located above all the light-shielding sheets. The partition sheet, the base plate, and / or the pressure plate are provided with clearance notches corresponding to the angle linkage or the translation rocker arm. These clearance notches provide space for the angle linkage or the translation rocker arm to move, increasing its range of motion, thereby increasing the rotation angle range and displacement range of the light-shielding sheets.

[0018] This utility model also provides a stage light, including a lamp head for emitting a light beam, an arm for supporting the rotation of the lamp head, and a housing for supporting the rotation of the arm. It also includes a cutter that independently drives the rotation and displacement of any of the aforementioned light-shielding plates. The cutter, located within the lamp head, selectively cuts the light beam. Utilizing the rotational support of the arm and the housing, the light beam emitted by the lamp head, after being cut by the cutter, can be projected to any position. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the position and structure of the light-shielding sheet of this utility model.

[0020] Figure 2 This is a schematic diagram of the sheet drive mechanism for a single light-shielding sheet of this utility model.

[0021] Figure 3 This is an exploded structural diagram of the cutter removal frame drive mechanism and rotating frame of the light-shielding sheet independently driven for rotation and displacement.

[0022] Figure 4 This is an exploded view of the overall structure of the cutter with independently driven rotation and displacement of the light-shielding plate according to this utility model.

[0023] Figure 5 This is a schematic diagram of the overall structure of the stage lamp of this utility model.

[0024] In the picture:

[0025] 100. Cutter; 110. White circular plate; 111. White circular hole; 120. Separator; 130. Base plate; 140. Pressure plate; 141. Clearance notch; 150. Aperture assembly; 160. Support wheel; 161. Clamping groove; 170. Mounting plate; 180. Support plate; 200. Rotating frame; 210. Arc rack; 220. Drive gear; 230. Rotation center; 300. Light shield; 310. Third pivot point; 320. Fourth pivot point; 33 0. Connecting piece; 400. Angle drive motor; 410. Angle swing arm; 411. First pivot point; 412. Second pivot point; 420. Translation rocker arm; 430. Angle connecting rod; 440. Angle limiting component; 500. Translation drive motor; 510. Connecting rod assembly; 511. Translation swing arm; 512. Translation connecting rod; 520. Displacement limiting component; 521. Limiting protrusion; 522. Limiting groove; 610. Lamp head; 620. Arm; 630. Housing. Detailed Implementation

[0026] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0027] like Figures 1 to 4This utility model provides a cutter with independently driven rotation and displacement of a light-shielding sheet, including a rotating frame 200 driven to rotate by a frame driving mechanism, a light-shielding sheet 300 disposed on the rotating frame 200 and rotating therewith, and a sheet driving mechanism. The light-shielding sheets 300 are arranged in at least two pairs. An angle swing arm 410 controlling the rotation angle of the light-shielding sheet 300 is pivotally connected to a translational rocker arm 420 at its pivot end. The common rotation center of the angle swing arm 410 and the translational rocker arm 420 forms a first pivot point 411 that is stationary relative to the rotating frame 200. A second pivot point 412 on the free end of the angle swing arm 410 is pivotally connected to an angle connecting rod 430. A third pivot point 310 on the light-shielding sheet 300... The fourth pivot point 320 is pivotally connected to the angle connecting rod 430 and the translation rocker arm 420 respectively. The sequential connection lines of the first pivot point 411, the second pivot point 412, the third pivot point 310 and the fourth pivot point 320 always form a parallelogram. Each light-shielding plate 300 corresponds to a plate driving mechanism. The plate driving mechanism includes an angle driving motor 400 that is dynamically coupled to the pivot end of the angle rocker arm 410 to drive the angle rocker arm 410 to rotate around the first pivot point 411, and a translation driving motor 500 that drives the translation rocker arm 420 to rotate around the first pivot point 411 or the angle connecting rod 430 to rotate around the second pivot point 412.

[0028] The cutter 100, whose rotation and displacement of the light-shielding plate 300 are independently driven, includes an angle drive motor 400 that controls the rotation angle of the light-shielding plate 300 and a translation drive motor 500 that controls the translation position of the light-shielding plate 300. Since the pivot points of the angle rocker arm 410, the angle connecting rod 430, the light-shielding plate 300, and the translation rocker arm 420 always form a parallelogram when connected sequentially, when the translation drive motor 500 drives the translation rocker arm 420 around the first pivot point... During the process of rotating point 411 or the angle linkage 430 around the second pivot point 412 to move the light-shielding plate 300, if the angle drive motor 400 does not drive the angle swing arm 410 to rotate (i.e., the line direction connecting the first pivot point 411 and the second pivot point 412 remains unchanged), then the line direction connecting the third pivot point 310 and the fourth pivot point 320 will also remain unchanged (opposite sides of a parallelogram are always parallel), and the rotation angle of the light-shielding plate 300 will naturally remain constant. The light-shielding plate 300 will only translate under the drive of the translation drive motor 500; similarly, if the translation drive motor 500 does not drive the translation rocker arm 420 to rotate (i.e., the fourth pivot point 320 is fixed in position) or the angle connecting rod 430 to rotate (i.e., the third pivot point 310 is fixed in position), but only the angle drive motor 400 drives the angle swing arm 410 to rotate, then the rotation angle of the light-shielding plate 300 will also follow the rotation of the angle swing arm 410, thereby allowing the light-shielding plate 300 to rotate in a certain direction. While maintaining its position, the angle of rotation of the cutter 100 is changed. Due to the power coupling between the pivot end of the angle drive motor 400 and the angle swing arm 410, the space occupied by the power transmission components between the angle drive motor 400 and the angle swing arm 410 can be effectively reduced. The rotation angle and translation position of the light shield 300 of the cutter 100 are independently driven by the independent rotation and displacement of the light shield 300. They are independent of each other and do not affect each other, making control simpler. The operation of the light shield 300 is also more stable and less prone to shaking.

[0029] When the cutter 100 is in use, the light-shielding plate 300 can be adjusted to a preset rotation angle outside the light beam using the angle drive motor 400, and then the light-shielding plate 300 can be driven to translate within the light beam using the translation drive motor 500. As long as the angle drive motor 400 remains stationary, the rotation angle of the light-shielding plate 300 will always maintain the preset rotation angle while translating within the light beam.

[0030] In this embodiment, the angle drive motor 400 acts directly or indirectly on the pivot end of the angle swing arm 410. The free end of the angle swing arm 410 is in a non-transmission connection state, and its motion trajectory is completely determined by the driving torque received by the pivot end and the mechanical characteristics of the angle swing arm 410 itself. No power transmission mechanism or energy input interface is provided in the rod section from the free end to the pivot end of the angle swing arm 410.

[0031] In a preferred embodiment of this invention, the translation drive motor 500 drives the translation rocker arm 420 or the angle link 430 to rotate via the linkage assembly 510. The linkage assembly 510 has a simple structure and stable transmission.

[0032] The linkage assembly 510 can be a two-link, a three-link, or more-link assembly. However, if the number of links exceeds two, constraints need to be added to limit its degrees of freedom, so that an angle of the translation drive motor 500 corresponds to a position of the light-shielding plate 300 in a one-to-one correspondence.

[0033] In a preferred embodiment of this utility model, the linkage assembly 510 includes a translational swing arm 511 fixedly connected to the rotating shaft of the translational drive motor 500, and a translational connecting rod 512, one end of which is pivotally connected to the translational swing arm 511 and the other end of which is pivotally connected to the translational rocker arm 420 or the angle connecting rod 430. The two-link structure has precisely controllable degrees of freedom, and one angle of the translational drive motor 500 corresponds to one position of the light-shielding plate 300, in a one-to-one correspondence.

[0034] In this embodiment, the angle drive motor 400 and the translation drive motor 500 are both fixed to one side of the rotating frame 200, while the angle swing arm 410, the angle connecting rod 430, the light shield 300, the translation rocker arm 420, the translation swing arm 511, and the translation connecting rod 512 are all located on the other side of the rotating frame 200.

[0035] In a preferred embodiment of this invention, the middle portion of the translational swing arm 511 or the angle connecting rod 430 bends away from the rotation center 230 of the rotating frame 200. This bending allows it to avoid obstacles on the components of the cutter 100, facilitating a wide range of rotation for the translational swing arm 511 or the angle connecting rod 430.

[0036] Generally, the rotation center 230 of the rotating frame 200 is located on the center line of the beam cut by the cutter 100.

[0037] Preferably, the angle linkage 430 is located on the side of the translation rocker arm 420 away from the rotation center 230 of the rotating frame 200.

[0038] In a preferred embodiment of this invention, the translation link 512 is pivotally connected to the translation rocker arm 420, and the pivot point is located on the side of the fourth pivot point 320 away from the first pivot point 411. This effectively avoids interference between the translation link 512 and the angle link 430, thereby ensuring the smooth operation of the plate drive mechanism.

[0039] In a preferred embodiment of this utility model, the translation rocker arm 420, after passing the fourth pivot point 320, bends towards the rotation center 230 away from the rotating frame 200 and pivots with the translation link 512. This reduces the length of the translation link 512, preventing it from being too long and occupying too much space, and the bending allows it to avoid obstructing components on the cutter 100.

[0040] In this embodiment, the translational swing arm 511 extends from the translational drive motor 500 in a direction away from the angle drive motor 400 and is pivotally connected to the translational link 512.

[0041] In a preferred embodiment of this utility model, the light-shielding plate 300 has an elongated connecting piece 330 protruding in a direction away from the rotation center 230 of the rotating frame 200, and the third pivot point 310 and the fourth pivot point 320 are located on the connecting piece 330. The light-shielding plate 300 only has the elongated connecting piece 330 protruding and pivotally connected to the angle connecting rod 430 and the translation rocker arm 420, so that when the light-shielding plate 300 rotates, the range of motion occupied by the connecting piece 330 is small.

[0042] In this embodiment, the connecting piece 330 and the light-shielding piece 300 are on the same plane and are cut / stamped together.

[0043] In a preferred embodiment of this utility model, a displacement limiting member 520 is further included to restrict the rotation of the translational swing arm 511, thereby limiting the maximum and minimum displacement of the light-shielding plate 300. The displacement limiting member 520 can prevent the translational swing arm 511 from rotating beyond its range, causing interference with the translational link 512 or an angle with the translational link 512 exceeding 180 degrees.

[0044] Preferably, the translational swing arm 511 is provided with a limiting protrusion 521 and a limiting groove 522, which respectively cooperate with the displacement limiting member 520 to limit the maximum and minimum rotation angles of the translational swing arm 511, thereby limiting the maximum and minimum displacements of the light-shielding plate 300.

[0045] In this embodiment, the displacement limiting member 520 is a screw disposed on the rotating frame 200.

[0046] The angle swing arm 410 is fixedly connected to the rotating shaft of the angle drive motor 400, and the translational rocker arm 420 is pivotally connected to the rotating shaft of the angle drive motor 400. The first pivot point 411 is located on the rotation axis of the rotating shaft of the angle drive motor 400. The power transmission components between the angle drive motor 400 and the angle swing arm 410 are omitted, minimizing space requirements.

[0047] In a preferred embodiment of this invention, an angle limiting member 440 is further included to restrict the rotation of the angle swing arm 410, thereby limiting the maximum and minimum angles of the light-shielding plate 300. The angle limiting member 440 can prevent interference between the angle connecting rod 430 and the translational rocker arm 420.

[0048] Preferably, the angle swing arm 410 is provided with two limiting protrusions 521 that cooperate with the angle limiting member 440 to limit the maximum and minimum rotation angles of the angle swing arm 410, thereby limiting the maximum and minimum angles of the light shield 300.

[0049] In this embodiment, the angle limiting member 440 is a screw disposed on the rotating frame 200.

[0050] In a preferred embodiment of this utility model, the light-shielding plates 300 are arranged in two pairs, with the two pairs of light-shielding plates 300 respectively located on both sides of the white circular plate 110. A white circular hole 111 is formed on the white circular plate 110, and the light-shielding plates 300 are arranged around the white circular hole 111. When the cutter 100 is used, the focal point of the light beam is generally positioned near the white circular hole 111. By placing the two pairs of light-shielding plates 300 on both sides of the white circular plate 110, all the light-shielding plates 300 can be brought as close as possible to the focal point of the light beam, thus ensuring clear imaging. The arrangement of the two pairs of light-shielding plates 300 around the white circular hole 111 allows for cutting of the light beam from multiple directions.

[0051] In a preferred embodiment of this invention, each pair of light-shielding plates 300 is arranged opposite to each other and separated by a partition 120, and the arrangement directions of the two pairs of light-shielding plates 300 are perpendicular to each other. The partition 120 can prevent adjacent light-shielding plates 300 from interfering with each other, and the perpendicular arrangement directions of the two pairs of light-shielding plates 300 can cut the light beam into a symmetrical shape.

[0052] In a preferred embodiment of this utility model, a base plate 130 located below all the light-shielding sheets 300 and a pressure plate 140 located above all the light-shielding sheets 300 are further included. The separator 120, the base plate 130, and / or the pressure plate 140 are provided with clearance notches 141 corresponding to the angle connecting rod 430 or the translation rocker arm 420. The clearance notches 141 provide space for the angle connecting rod 430 or the translation rocker arm 420 to move, increasing their range of motion and thus increasing the rotation angle range and displacement range of the light-shielding sheets 300.

[0053] Generally, the clearance notch 141 is set for the one of the angle link 430 and the translation rocker arm 420 that is relatively closer to the rotation center 230 of the rotating frame 200. In this embodiment, the translation rocker arm 420 is closer to the rotation center 230 of the rotating frame 200.

[0054] In this embodiment, the base plate 130 and the pressure plate 140 are connected as one unit, and the white round plate 110 and the partition plate 120 are fixed to the base plate 130 or the pressure plate 140 to form a whole and are fixed on the mounting plate 170.

[0055] Preferably, the mounting plate 170 is provided with an avoidance notch 141 corresponding to the angle connecting rod 430 or the translation rocker arm 420.

[0056] Optionally, the rotating frame 200 is further provided with an aperture assembly 150.

[0057] The frame drive mechanism includes a stationary arc-shaped rack 210 and a frame drive motor disposed on the rotating frame 200. The rotating shaft of the frame drive motor is fixedly connected to a drive gear 220, which meshes with the arc-shaped rack 210.

[0058] The cutter 100 also includes a plurality of support wheels 160 with clamping grooves 161 that are stationary on a plurality of mounting support plates 180. The rotating frame 200 is held in the clamping grooves 161 on the plurality of support wheels 160, and its rotation is supported by the plurality of support wheels 160 working together.

[0059] like Figure 5This utility model also provides a stage light, including a lamp head 610 for emitting a light beam, an arm 620 for supporting the rotation of the lamp head 610, and a housing 630 for supporting the rotation of the arm 620. It also includes a cutter 100 whose rotation and displacement are independently driven by any of the aforementioned light-shielding plates 300. The cutter 100, located within the lamp head 610, selectively cuts the light beam. Utilizing the rotational support of the arm 620 and the housing 630, the light beam emitted by the lamp head 610, after being cut by the cutter 100, can be projected to any position.

[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cutter with independently driven rotation and displacement of a light-shielding plate, characterized in that, The system includes a rotating frame (200) driven to rotate by a frame driving mechanism, light-shielding plates (300) mounted on the rotating frame (200) and rotating thereafter, and a plate driving mechanism. The light-shielding plates (300) are arranged in at least two pairs. An angle swing arm (410) controlling the rotation angle of the light-shielding plate (300) is pivotally connected to a translational rocker arm (420) at its pivot end. The common rotation center of the angle swing arm (410) and the translational rocker arm (420) forms a first pivot point (411) stationary relative to the rotating frame (200). A second pivot point (412) on the free end of the angle swing arm (410) is pivotally connected to an angle connecting rod (430). The third pivot point (310) and the fourth pivot point (320) on the light-shielding plate (300) are respectively connected to the... The angle link (430) and the translation rocker arm (420) are pivotally connected. The lines connecting the first pivot point (411), the second pivot point (412), the third pivot point (310), and the fourth pivot point (320) always form a parallelogram. Each light-shielding plate (300) corresponds to a plate driving mechanism. The plate driving mechanism includes an angle driving motor (400) that is dynamically coupled to the pivot end of the angle rocker arm (410) to drive the angle rocker arm (410) to rotate around the first pivot point (411), and a translation driving motor (500) that drives the translation rocker arm (420) to rotate around the first pivot point (411) or the angle link (430) to rotate around the second pivot point (412).

2. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 1, characterized in that, The translation drive motor (500) drives the translation rocker arm (420) or the angle link (430) to rotate via the linkage assembly (510).

3. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 2, characterized in that, The linkage assembly (510) includes a translation swing arm (511) fixedly connected to the shaft of the translation drive motor (500), and a translation link (512) with one end pivotally connected to the translation swing arm (511) and the other end pivotally connected to the translation rocker arm (420) or the angle link (430).

4. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 3, characterized in that, The middle part of the translational swing arm (511) or the angle connecting rod (430) bends toward the rotation center (230) away from the rotating frame (200).

5. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 3, characterized in that, The translation link (512) is pivotally connected to the translation rocker arm (420), and the pivot point is located on the side of the fourth pivot point (320) away from the first pivot point (411).

6. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 5, characterized in that, The translation rocker arm (420) bends toward the rotation center (230) away from the rotation frame (200) after passing the fourth pivot point (320) and is pivotally connected to the translation link (512).

7. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 1, characterized in that, The light-shielding plate (300) has a long and thin connecting piece (330) protruding in the direction away from the rotation center (230) of the rotating frame (200), and the third pivot point (310) and the fourth pivot point (320) are located on the connecting piece (330).

8. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 3, characterized in that, It also includes a displacement limiter (520) that restricts the rotation of the translation rocker arm (420) to limit the maximum and minimum displacement of the light shield (300).

9. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 1, characterized in that, The angle swing arm (410) is fixedly connected to the rotating shaft of the angle drive motor (400), and the translation rocker arm (420) is pivotally connected to the rotating shaft of the angle drive motor (400). The first pivot point (411) is located on the rotation axis of the rotating shaft of the angle drive motor (400).

10. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 1, characterized in that, It also includes an angle limiter (440) that restricts the rotation of the angle swing arm (410) to limit the maximum and minimum angles of the light shield (300).

11. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 1, characterized in that, The light-shielding plates (300) are arranged in two pairs, and the two pairs of light-shielding plates (300) are respectively located on both sides of the white circular plate (110). The white circular plate (110) has a white circular hole (111), and the light-shielding plates (300) are arranged around the white circular hole (111).

12. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 11, characterized in that, Each pair of light-shielding sheets (300) is arranged opposite to each other and is separated by a partition (120). The arrangement directions of the two pairs of light-shielding sheets (300) are perpendicular to each other.

13. The cutter with independently driven rotation and displacement of the light-shielding plate according to claim 12, characterized in that, It also includes a base plate (130) located below all the light-shielding sheets (300) and a pressure plate (140) located above all the light-shielding sheets (300), and the partition sheet (120), the base plate (130) and / or the pressure plate (140) are provided with clearance notches (141) corresponding to the angle connecting rod (430) or the translation rocker arm (420).

14. A stage light, characterized in that, The device includes a lamp head (610) for emitting a light beam, an arm (620) for supporting the rotation of the lamp head (610), and a housing (630) for supporting the rotation of the arm (620). It also includes a cutter (100) for independently driving the rotation and displacement of the light shield (300) as described in any one of claims 1-13, wherein the cutter (100) for independently driving the rotation and displacement of the light shield (300) is located within the lamp head (610) and selectively cuts the light beam.

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