Driving device of microscope electric platform

Abstract

The invention provides a driving device of a microscope electric platform. The driving device comprises a bearing bottom plate, a supporting seat, a first translation platform, a second translation platform and an objective table, the first platform is arranged at the upper end of the supporting base in a lifting mode along the Z axis, the second translation table is arranged at the upper end of the first platform in a translation mode along the X axis, and the objective table is arranged at the upper end of the second translation table in a translation mode along the Y axis. A supporting frame is arranged at the upper end of the bearing bottom plate, an X-axis rod is rotationally connected to the upper end of the supporting frame, a Y-axis rod is arranged in the middle of the X-axis rod, a supporting frame is rotationally connected to the outer side of the Y-axis rod, and the supporting frame is connected with the bottom of the supporting seat and used for conducting X-axis and Y-axis rotating supporting on the supporting seat by matching the supporting frame with the X-axis rod and the Y-axis rod. According to the invention, multifunctional operations such as vertical lifting of the objective table on the Z axis, linear translation of the X axis and the Y axis and inclination angle adjustment of the X axis or the Y axis are realized, and the requirements of multi-view and micro-scale observation are fully met.

Description

Technical Field

[0001] This invention relates to the field of microscope accessories technology, and in particular to a drive device for an electric microscope platform. Background Technology

[0002] The electric stage drive unit for microscopes is a crucial component, primarily used to control the stage for precise multi-dimensional movement, adapting to high-precision scenarios such as biological tissue observation and microarray analysis. In the field of microscopic observation, the stage's adjustability directly determines the microscope's observation range and analytical accuracy.

[0003] Most mainstream products on the market currently employ a three-dimensional adjustment structure with horizontal translation along the XY axes and vertical lifting along the Z-axis. Their core transmission components are a combination of stepper motors, ball screws, and linear guides. In the XY axis direction, two independent stepper motors drive the ball screws to rotate, causing the stage to move orthogonally along the guides. In the Z-axis direction, a motor drives a worm gear pair to lift the stage. This structure only allows for linear dimensional adjustment and cannot adjust the tilt angle of the stage around the X and Y axes. When observing inclined sections or non-planar structures of the sample, manual disassembly and repositioning with external clamps are required. This is not only cumbersome but also introduces positioning errors due to the secondary clamping, leading to a shift in the field of view. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the existing technology. The present invention proposes a driving device for an electric microscope platform.

[0005] To address the issue that most mainstream products on the market employ a three-dimensional adjustment structure of horizontal translation along the XY axes and vertical lifting along the Z axis, with a core transmission component consisting of a stepper motor, ball screw, and linear guide rail, the XY-axis is controlled by two independent stepper motors driving the ball screws to rotate, causing the stage to move orthogonally along the guide rail. The Z-axis is controlled by a motor driving a worm gear pair to lift the stage. This structure only allows for linear dimensional adjustment and cannot adjust the tilt angle of the stage around the X and Y axes. When observing the tilted cross-section or non-planar structure of the sample, manual disassembly and repositioning with external clamps are required, which is not only cumbersome but also introduces positioning errors due to secondary clamping, leading to a shift in the field of view. The technical solution adopted in this invention is: A drive device for an electric microscope platform includes: a base plate, a support, a first translation stage, a second translation stage, and a stage. The first platform is vertically mounted on the upper end of the support base along the Z-axis, the second translation stage is horizontally mounted on the upper end of the first platform along the X-axis, and the loading stage is horizontally mounted on the upper end of the second translation stage along the Y-axis, for the loading stage to be adjusted in three directions: Z-axis, X-axis and Y-axis. The upper end of the bearing base plate is provided with a support frame, the upper end of the support frame is rotatably connected with an X-axis rod, the middle of the X-axis rod is provided with a Y-axis rod, the outer side of the Y-axis rod is rotatably connected with a support frame, and the support frame is connected to the bottom of the support base, so that the support frame, together with the X-axis rod and the Y-axis rod, can provide X-axis and Y-axis rotational support for the support base; The upper end of the supporting base plate is provided with a lower universal ball seat, and the upper end of the lower universal ball seat is rotatably connected to a lower universal ball head. The upper end of the lower universal ball head is provided with a first electric telescopic rod, and the telescopic part of the upper end of the first electric telescopic rod is provided with an upper universal ball head. The upper end of the upper universal ball head is rotatably connected to an upper universal ball seat, and the upper universal ball seat is located on the outside of the support frame. It is used for the first electric telescopic rod to work in conjunction with the X-axis rod and the Y-axis rod to synchronously drive the stage to perform X-axis and Y-axis tilt adjustment.

[0006] Preferably, the upper end of the support frame has a U-shaped casting structure, the X-axis rod and the Y-axis rod are distributed in a horizontal cross shape, there are four lower universal ball seats, which are symmetrically distributed in sequence with respect to the upper end of the bearing base plate, and there are four first electric telescopic rods, with every two first electric telescopic rods forming a group, and the two groups of first electric telescopic rods are symmetrically distributed with respect to the upper end of the bearing base plate in an outward tilt.

[0007] Preferably, a second electric telescopic rod is vertically arranged in the middle of the support base, and the upper telescopic part of the second electric telescopic rod is connected to the bottom of the first translation platform.

[0008] Preferably, the first sliding rod is vertically arranged at the four corners of the lower end of the first translation stage, and the sliding tube is arranged at the four corners of the upper end of the support base, with the lower end of the first sliding rod slidably connected to the inner wall of the sliding tube.

[0009] Preferably, an X-axis linear motor is provided on the side of the first translation stage, and an X-axis lead screw is driven to the inner side of the X-axis linear motor. The X-axis lead screw is rotatably connected to the middle of the first translation stage, and the lower end of the second translation stage is driven to the X-axis lead screw through a lead screw nut.

[0010] Preferably, a second slide rod is slidably connected through both sides of the lower end of the second translation stage, and the second slide rod is horizontally arranged on both sides of the middle part of the first translation stage.

[0011] Preferably, a Y-axis linear motor is provided on the outer side of the second translation stage, and a Y-axis lead screw is driven and connected to the inner side of the Y-axis linear motor. The Y-axis lead screw is rotatably connected to the middle of the second translation stage, and the lower end of the platform is driven and connected to the Y-axis lead screw through a lead screw nut.

[0012] Preferably, a third slide rod is slidably connected to both sides of the lower end of the platform, and the third slide rod is horizontally arranged on both sides of the middle part of the second translation platform.

[0013] Preferably, the upper end of the stage is provided with a positioning groove for limiting and positioning the sample clip, the bottom of the stage is provided with a displacement sensor and a dual-axis tilt sensor, and the upper end of the support base plate integrates a main control board, a motor drive module and a signal acquisition module.

[0014] Preferably, the four corners of the bottom of the supporting base plate are provided with shock-absorbing feet, and the inside of the shock-absorbing feet is made of a composite structure of rubber damping layer and metal spring sheet. The four corners of the supporting base plate are provided with positioning pin holes that match the microscope base.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a drive device for a microscope's motorized platform. After the stage has been adjusted along the Z, X, and Y axes, if further tilt angle adjustment along the X or Y axis is required, two sets of first-stage motorized telescopic rods can be activated for corresponding extension and retraction. During the corresponding extension and retraction of these two sets of first-stage motorized telescopic rods, the rotational support of the X-axis and Y-axis rods causes the support frame to tilt along the X or Y axis. This tilting of the support frame, in turn, synchronously adjusts the tilt angle of the stage along the X or Y axis. Through this design, the drive device achieves multiple functions for the stage, including vertical lifting and lowering along the Z-axis, linear translation along the X and Y axes, and tilt angle adjustment along the X or Y axis, fully meeting the needs of multi-view, micro-scale observation. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a schematic diagram of the overall structure of the device of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the device of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure at point A of the device of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the device of the present invention; Figure 5 This is a partial structural diagram of the device of the present invention.

[0017] Reference numerals: 1. Support base plate; 101. Vibration damping foot; 102. Positioning pin hole; 2. Support seat; 201. Slide tube; 3. First translation stage; 301. First slide rod; 302. X-axis linear motor; 303. X-axis lead screw; 304. Second slide rod; 4. Second translation stage; 401. Y-axis linear motor; 402. Y-axis lead screw; 403. Third slide rod; 5. Platform; 501. Positioning groove; 6. Support frame; 7. X-axis rod; 8. Y-axis rod; 9. Support frame; 10. Lower universal ball joint; 11. Lower universal ball joint; 12. First electric telescopic rod; 13. Upper universal ball joint; 14. Upper universal ball joint; 15. Second electric telescopic rod. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0019] Specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0020] Please see Figures 1-5 This embodiment proposes a driving device for an electric microscope platform. The driving device adopts a layered structure design, which includes, from bottom to top, a supporting base 1, a support seat 2, a first translation stage 3, a second translation stage 4, and a stage 5.

[0021] The four corners of the bottom of the support base plate 1 are bonded with shock-absorbing feet 101. These shock-absorbing feet 101 have a composite structure combining a rubber damping layer and a metal spring. This design can effectively attenuate the vibration generated by the support base plate 1 during the drive process by utilizing the flexibility of the rubber and the elasticity of the metal spring, thus ensuring the stable operation of the entire device. The four corners of the support base plate 1 also have positioning pin holes 102 that are adapted to the microscope base. Through the cooperation of the positioning pin holes 102 and the mounting bolts, the support base plate 1 and the microscope base can be easily and accurately installed and positioned.

[0022] A support frame 6 is securely bolted to the upper center of the support base plate 1. The upper end of the support frame 6 has a U-shaped cast structure, which not only provides high strength but also facilitates the installation of subsequent components. An X-axis rod 7 is rotatably connected to the upper end of the support frame 6 via a pivot. A Y-axis rod 8 is welded through the middle of the X-axis rod 7, and the two are arranged in a horizontal cross shape. This layout provides reasonable mechanical support for subsequent tilt adjustments. A support frame 9 is rotatably connected to the outer side of the Y-axis rod 8 via a pivot, and the support frame 9 is welded to the bottom of the support base 2. In addition, four lower universal ball joints 10 are screwed to the upper end of the support base plate 1, symmetrically distributed with respect to the upper end of the support base plate 1. Each lower universal ball joint 10 has a lower universal ball head 11 rotatably connected to its upper end. A first electric telescopic rod 12 is screwed to the upper end of the lower universal ball head 11. There are four first electric telescopic rods 12, arranged in pairs, with the two pairs symmetrically distributed outwards from the upper end of the support base plate 1. The telescopic part at the upper end of the first electric telescopic rod 12 is fitted with an upper universal ball joint 13 by screws. The upper end of the upper universal ball joint 13 is rotatably connected to an upper universal ball seat 14. The upper universal ball seat 14 is supported and installed on the outside of the support frame 9 by screws. This universal ball connection structure makes the rotation between components flexible and smooth.

[0023] A second electric telescopic rod 15 is vertically mounted on the middle of the support base 2 via screws. The telescopic part of the upper end of the second electric telescopic rod 15 is connected to the bottom of the first translation platform 3 via screws. A first slide rod 301 is vertically welded to the four corners of the lower end of the first translation platform 3, and a slide tube 201 is welded through the four corners of the upper end of the support base 2. The lower end of the first slide rod 301 is slidably connected to the inner wall of the slide tube 201. This design, through the cooperation of the first slide rod 301 and the slide tube 201, provides a precise limiting effect for the vertical lifting and lowering movement of the first translation platform 3.

[0024] An X-axis linear motor 302 is mounted on the side of the first translation stage 3 via screws. An X-axis lead screw 303 is connected to the inner side of the X-axis linear motor 302. The X-axis lead screw 303 is rotatably connected to the middle of the first translation stage 3 via a rotating shaft. The lower end of the second translation stage 4 is connected to the X-axis lead screw 303 via a lead screw nut. Second slide rods 304 are slidably connected to both sides of the lower end of the second translation stage 4. The second slide rods 304 are horizontally welded to both sides of the middle of the first translation stage 3, limiting the horizontal movement of the second translation stage 4 along the X-axis. A Y-axis linear motor 401 is mounted on the outer side of the second translation stage 4 via screws. A Y-axis lead screw 402 is connected to the inner side of the Y-axis linear motor 401. The Y-axis lead screw 402 is rotatably connected to the middle of the second translation stage 4 via a rotating shaft. The lower end of the platform 5 is connected to the Y-axis lead screw 402 via a lead screw nut. The lower ends of the stage 5 are slidably connected to the two sides of the third slide rod 403. The third slide rod 403 is horizontally welded to the two sides of the middle part of the second translation stage 4, thereby limiting the horizontal movement of the stage 5 along the Y-axis.

[0025] The upper end of the stage 5 has a positioning groove 501 for precise positioning of the sample holder. A displacement sensor and a dual-axis tilt sensor (not shown in the figure) are mounted on the bottom of the stage 5 using screws. These two sensors monitor the position and angle signals of the stage 5 in real time, providing data support for precise control. The upper end of the support base plate 1 also integrates a main control board, a motor drive module, and a signal acquisition module (not shown in the figure). The main control board is responsible for handling core tasks such as command parsing, motion control, and signal feedback. The motor drive module is electrically connected to the first electric telescopic rod 12, the second electric telescopic rod 15, the X-axis linear motor 302, and the Y-axis linear motor 401, respectively, for precise drive control of these components. The signal acquisition module is electrically connected to the displacement sensor and the dual-axis tilt sensor, respectively, for converting the acquired position and angle signals of the stage 5 into digital signals and transmitting them to the main control board for processing.

[0026] Please continue reading. Figures 1-5 In actual use, the supporting base plate 1 is first installed onto the microscope base by cooperating with the positioning pin hole 102 and the mounting bolt. Next, the sample clip is accurately positioned within the positioning groove 501. When it is necessary to adjust the vertical position of the stage 5 along the Z-axis, the second electric telescopic rod 15 is activated to extend or retract. The extension and retraction of the second electric telescopic rod 15 will drive the first translation stage 3 to move vertically up and down, thereby synchronously driving the stage 5 to adjust its vertical position along the Z-axis.

[0027] While the stage 5 is being vertically adjusted along the Z-axis, if X-axis linear translation adjustment is required, simply turn on the X-axis linear motor 302. Once the X-axis linear motor 302 is turned on, it will drive the X-axis lead screw 303 to rotate. Through the transmission engagement with the lead screw nut, the X-axis lead screw 303 will drive the second translation stage 4 to move linearly along the X-axis. The movement of the second translation stage 4 will then synchronously drive the stage 5 to perform X-axis linear translation adjustment.

[0028] After the stage 5 completes the X-axis linear translation adjustment, if Y-axis linear movement is still required, simply activate the Y-axis linear motor 401. Once activated, the Y-axis linear motor 401 drives the Y-axis lead screw 402 to rotate. Through its transmission with the lead screw nut, the Y-axis lead screw 402 directly drives the stage 5 to perform Y-axis linear movement. In this way, the stage 5 can simultaneously perform vertical lifting and lowering adjustment along the Z-axis while also achieving linear translation adjustment along the X and Y axes.

[0029] After the stage 5 has completed adjustments in the Z, X, and Y axes, if further tilt angle adjustments along the X or Y axis are required, the two sets of first electric telescopic rods 12 can be activated for corresponding extension and retraction. When the two sets of first electric telescopic rods 12 extend and retract, under the rotational support of the X-axis rod 7 and the Y-axis rod 8, the support frame 9 will tilt along the X or Y axis. This tilting of the support frame 9 will then simultaneously adjust the tilt angle of the stage 5 along the X or Y axis. Through this design, the drive device achieves multiple functions for the stage 5, including vertical lifting and lowering along the Z axis, linear translation along the X and Y axes, and tilt angle adjustments along the X or Y axis, fully meeting the needs of multi-view, micro-scale observation.

[0030] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A drive device for an electric microscope platform, characterized in that, include: The supporting base plate, support seat, first translation stage, second translation stage, and loading platform; The first platform is vertically mounted on the upper end of the support base along the Z-axis, the second translation stage is horizontally mounted on the upper end of the first platform along the X-axis, and the loading stage is horizontally mounted on the upper end of the second translation stage along the Y-axis, for the loading stage to be adjusted in three directions: Z-axis, X-axis and Y-axis. The upper end of the bearing base plate is provided with a support frame, the upper end of the support frame is rotatably connected with an X-axis rod, the middle of the X-axis rod is provided with a Y-axis rod, the outer side of the Y-axis rod is rotatably connected with a support frame, and the support frame is connected to the bottom of the support base, so that the support frame, together with the X-axis rod and the Y-axis rod, can provide X-axis and Y-axis rotational support for the support base; The upper end of the supporting base plate is provided with a lower universal ball seat, and the upper end of the lower universal ball seat is rotatably connected to a lower universal ball head. The upper end of the lower universal ball head is provided with a first electric telescopic rod, and the telescopic part of the upper end of the first electric telescopic rod is provided with an upper universal ball head. The upper end of the upper universal ball head is rotatably connected to an upper universal ball seat, and the upper universal ball seat is located on the outside of the support frame. It is used for the first electric telescopic rod to work in conjunction with the X-axis rod and the Y-axis rod to synchronously drive the stage to perform X-axis and Y-axis tilt adjustment.

2. The driving device for the electric microscope platform according to claim 1, characterized in that, The upper end of the support frame has a U-shaped casting structure. The X-axis rod and Y-axis rod are distributed in a horizontal cross shape. There are four lower universal ball seats, which are symmetrically distributed with respect to the upper end of the bearing base plate. There are four first electric telescopic rods, and every two first electric telescopic rods form a group. The two groups of first electric telescopic rods are symmetrically distributed with respect to the upper end of the bearing base plate, tilting outwards.

3. The driving device for the electric microscope platform according to claim 1, characterized in that, A second electric telescopic rod is vertically arranged in the middle of the support base, and the upper telescopic part of the second electric telescopic rod is connected to the bottom of the first translation platform.

4. The driving device for the microscope electric platform according to claim 3, characterized in that, The first sliding rod is vertically installed at the four corners of the lower end of the first translation stage, and the sliding tube is installed at the four corners of the upper end of the support base, with the lower end of the first sliding rod slidably connected to the inner wall of the sliding tube.

5. The driving device for the electric microscope platform according to claim 1, characterized in that, An X-axis linear motor is installed on the side of the first translation stage. An X-axis lead screw is connected to the inner side of the X-axis linear motor and is rotatably connected to the middle of the first translation stage. The lower end of the second translation stage is connected to the X-axis lead screw through a lead screw nut.

6. The driving device for the electric microscope platform according to claim 5, characterized in that, The second sliding rod is slidably connected to both sides of the lower end of the second translation stage, and the second sliding rod is horizontally arranged on both sides of the middle part of the first translation stage.

7. The driving device for the electric microscope platform according to claim 1, characterized in that, A Y-axis linear motor is installed on the outer side of the second translation stage. A Y-axis lead screw is connected to the inner side of the Y-axis linear motor, and the Y-axis lead screw is rotatably connected to the middle of the second translation stage. The lower end of the platform is connected to the Y-axis lead screw through a lead screw nut.

8. The driving device for the electric microscope platform according to claim 7, characterized in that, The lower end of the platform is slidably connected to the two sides of the third slide rod, and the third slide rod is horizontally arranged on both sides of the middle part of the second translation platform.

9. The driving device for the electric microscope platform according to claim 1, characterized in that, The upper end of the stage is provided with a positioning groove for limiting and positioning the sample clip. The bottom of the stage is provided with a displacement sensor and a dual-axis tilt sensor. The upper end of the support base plate integrates a main control board, a motor drive module, and a signal acquisition module.

10. The driving device for the electric microscope platform according to claim 1, characterized in that, The base plate is provided with shock-absorbing feet at the four corners of the bottom, and the shock-absorbing feet are made of a composite structure of rubber damping layer and metal spring sheet. The base plate is provided with positioning pin holes that match the microscope base.

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