Electric negative film bin device for astronomical negative film digital scanning equipment

Abstract

The utility model discloses an electric negative film cabin device for astronomical negative film digital scanning equipment, which comprises a bottom plate, a pair of pressing mechanisms are symmetrically arranged on the bottom plate, the two pressing mechanisms are connected through a sliding table mechanism, and the sliding table mechanism is configured to control at least one pressing mechanism to move. The distance between the two pressing mechanisms is reduced or increased; the pressing mechanism comprises a supporting plate and a pressing plate, the pressing plate is installed above the supporting plate, one side edge of the pressing plate is connected with a pressing shaft, and the pressing shaft is configured to drive the pressing plate to swing close to or away from the supporting plate, so that the problem of automatic clamping and positioning of astronomical negative films of different sizes in the scanning process of the scanner is solved; the shaking of the astronomical negative film caused by acceleration and deceleration actions of the scanner is reduced, and the imaging precision of the astronomical negative film is ensured; and a better technical solution is provided for carrying out a large number of astronomical negative scanning tasks at home and abroad.

Description

Technical Field

[0001] The utility model relates to the technical field of precision machinery control, and particularly relates to an electric negative film bin device for an astronomical negative film digital scanning device. Background Technique

[0002] The digitalization of astronomical negatives has been carried out at home and abroad for a long time. However, due to the lack of professional scanners, many observatories use commercial scanners for scanning, but the results are not ideal. Subsequently, some foreign observatories have carried out the research and development of relevant scanners. However, only the Shanghai Astronomical Observatory of the Chinese Academy of Sciences has developed a professional astronomical negative film scanner in China, which is used for the scanning work of existing astronomical negatives in many domestic observatories.

[0003] At present, the developed scanners cannot carry out the scanning work of ultra-large size specifications (the existing maximum size of astronomical negatives: 450mm×450mm) due to the limited stroke range. At the same time, the negative film bins of the existing scanners need to be manually adjusted to adapt to astronomical negatives of different size specifications. The operation process is cumbersome, requiring more manpower and time, and cannot meet the task requirements of high-precision and fast scanning of a large number of astronomical negatives. Therefore, there is an urgent need for an electric negative film bin device for an astronomical negative film digital scanning device to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electric negative film bin device for an astronomical negative film digital scanning device, which can effectively solve the problems existing in the above-mentioned prior art.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: An electric negative film bin device for an astronomical negative film digital scanning device, including a bottom plate, a pair of pressing mechanisms are symmetrically installed on the bottom plate, and the two pressing mechanisms are connected by a sliding table mechanism. The sliding table mechanism is configured to control at least one of the pressing mechanisms to move to reduce or increase the distance between the two pressing mechanisms; the pressing mechanism includes:

[0006] A support plate for carrying astronomical negatives;

[0007] A pressing plate is installed above the support plate, and one side of the pressing plate is connected to a pressing shaft. The pressing shaft is configured to drive the pressing plate to swing close to or away from the support plate.

[0008] Preferably, the pressing mechanism further includes a support spring and a support guide rail. The support guide rail is located below the support plate, and the support spring is installed between the support plate and the support guide rail. The support spring tends to drive the support plate to move towards the pressing plate side.

[0009] Preferably, a pressing stepping motor is installed on one side of the pressing shaft. The output shaft of the pressing stepping motor is connected to the pressing shaft through a coupling, and the pressing stepping motor is used to drive the pressing shaft to rotate.

[0010] Preferably, the sliding table mechanism includes a ball screw. Both ends of the ball screw are supported by bearings. At least one pressing mechanism is equipped with a slider, and the slider is engaged with the ball screw through a nut. The rotation of the ball screw drives the slider and the corresponding pressing mechanism to move.

[0011] Preferably, a linear guide rail is arranged parallel to the axis direction at the bottom of the ball screw, and the slider is slidably connected to the linear guide rail.

[0012] Preferably, there are two sliding table mechanisms, symmetrically arranged at both ends of the pressing mechanism. Sliders are installed at both ends of the pressing mechanism, and the two sliders are respectively engaged with the corresponding ball screws through nuts.

[0013] Preferably, a synchronous belt drive mechanism is installed on one side of the two sliding table mechanisms. The synchronous belt drive mechanism is connected to the ball screws of the two sliding table mechanisms, and the synchronous belt drive mechanism is configured to drive the two ball screws to rotate synchronously.

[0014] Preferably, the synchronous belt drive mechanism includes a synchronous belt pulley, a synchronous belt and a synchronous belt drive stepping motor. Synchronous belt pulleys are installed at both ends of the two ball screws. The synchronous belt is sleeved on the two synchronous belt pulleys. The synchronous belt drive stepping motor is connected to the synchronous belt and drives the two synchronous belt pulleys to rotate synchronously through the synchronous belt.

[0015] Preferably, an idler pulley is arranged on one side of the synchronous belt, and the idler pulley is used to provide tension for the synchronous belt.

[0016] Beneficial effects: Through the action of the pressing mechanism and the sliding table mechanism, the present invention solves the problems of automatic clamping and positioning of astronomical negatives with different sizes during the scanning process of the scanner; solves the problem that ultra-large-size negatives cannot be scanned by the first two generations of scanners, and adapts to the scanning of negatives with different size specifications; during the operation of the scanner, the electric negative film magazine reduces the acceleration and deceleration actions of the scanner, which causes the astronomical negative to shake, and ensures the imaging accuracy of the astronomical negative; and provides a better technical solution for carrying out a large number of astronomical negative scanning tasks at home and abroad. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model.

[0018] In the drawings:

[0019] Figure 1 It is a schematic structural diagram of the electric negative film bin device of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the sliding table mechanism of the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the pressing mechanism of the present utility model;

[0022] Figure 4 It is a schematic structural diagram of the synchronous belt drive mechanism of the present utility model;

[0023] Reference numerals in the figure: 1. Sliding table mechanism; 2. Pressing mechanism; 3. Synchronous belt drive mechanism; 4. Base plate; 5. Astronomical negative film; 6. Angular contact bearing; 7. Ball screw; 8. Deep groove ball bearing; 9. Linear guide rail; 10. Pressing stepping motor; 11. Coupling; 12. Pressing shaft; 13. Pressing plate; 14. Support plate; 15. Support spring; 16. Support guide rail; 17. Synchronous belt pulley; 18. Synchronous belt; 19. Synchronous belt drive stepping motor; 20. Idler pulley. Detailed implementation manners

[0024] The embodiments of the present utility model will be described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0025] Embodiment: As Figure 1 shown, an electric negative film bin device for an astronomical negative film 5 digital scanning device reduces cumbersome manual operations and is applicable to the automatic positioning of astronomical negative films 5 of different specifications to achieve automation during the scanning process of the astronomical negative film 5; the device includes a base plate 4, a sliding table mechanism 1 and a pressing mechanism 2;

[0026] Base plate 4, the base plate 4 of the negative film bin device is fixed to the moving platform of the negative film scanner to support the overall structure of the negative film bin device;

[0027] Refer to Figure 2 shown, the sliding table mechanism 1 is installed on the base plate 4 and is used to control the movement of at least one pressing mechanism 2 to reduce or increase the distance between two pressing mechanisms 2; for the sliding table mechanism 1, it includes a ball screw 7, and both ends of the ball screw 7 are supported by bearings. For example, refer to Figure 2 shown, the two ends of the ball screw 7 are respectively connected and supported by an angular contact bearing 6 and a deep groove ball bearing 8, and at least one pressing mechanism 2 is provided with a slider, and the slider is engaged with the ball screw 7 through a nut, and the rotation of the ball screw 7 drives the slider and the corresponding pressing mechanism 2 to move;

[0028] In a specific embodiment, refer to Figure 2As shown, a linear guide rail 9 is arranged parallel to the axis at the bottom of the ball screw 7. The slider is slidably connected to the linear guide rail 9 to provide auxiliary support for it, improve the stiffness of the slide table, and ensure the running accuracy.

[0029] In a specific embodiment, on the above basis, referring to Figure 1 As shown, there are two slide table mechanisms 1, symmetrically arranged at both ends of the pressing mechanism 2. Taking the movement of one pressing mechanism 2 as an example, sliders are installed at both ends of the pressing mechanism 2. The two sliders are respectively meshed with the corresponding ball screws 7 through nuts, and the two are used to drive the pressing mechanism 2 to move stably.

[0030] Referring to Figure 3 As shown, the pressing mechanism 2 includes a support guide rail 16 located below, a support plate 14 located on the support guide rail 16, and the support plate 14 is used to carry the astronomical negative film 5; a support spring 15 is installed between the support plate 14 and the support guide rail 16, and the support spring 15 tends to drive the support plate 14 to move towards the pressing plate 13. A pressing plate 13 is installed above the support plate 14, and one side edge of the pressing plate 13 is connected to the pressing shaft 12. The pressing shaft 12 is configured to drive the pressing plate 13 to swing close to or away from the support plate 14 to realize the pressing action of the astronomical negative film 5; when the astronomical negative film 5 is placed on the support plate 14 and the pressing plate 13 presses the negative film, it can ensure that the negative film is closely attached to the pressing plate 13, avoiding the shaking and displacement of the negative film caused by the scanning movement;

[0031] For the swing of the pressing plate 13, a rotational force can be applied to the pressing shaft 12. In a specific embodiment, referring to Figure 3 As shown, a pressing stepper motor 10 is installed on one side of the pressing shaft 12. The output shaft of the pressing stepper motor 10 is connected to the pressing shaft 12 through a coupling 11, and the pressing stepper motor 10 is used to drive the pressing shaft 12 to rotate; ensure the synchronous operation of the two slide table mechanisms 1 and avoid jamming;

[0032] Referring to Figure 4 , the synchronous belt drive mechanism 3 includes a synchronous belt pulley 17, a synchronous belt 18, and a synchronous belt drive stepper motor 19. Synchronous belt pulleys 17 are installed at both ends of the two ball screws 7. The synchronous belt 18 is sleeved on the two synchronous belt pulleys 17. The synchronous belt drive stepper motor 19 is connected to the synchronous belt and drives the two synchronous belt pulleys 17 to rotate synchronously through the synchronous belt 18; wherein, an idler pulley 20 is arranged on one side of the synchronous belt 18, and the idler pulley 20 is used to provide a tensioning force for the synchronous belt 18 to make the synchronous belt closely fit the synchronous belt pulley 17.

[0033] Based on the above, when the astronomical film 5 scanner starts working, the length and width of the astronomical film 5 are input into the computer. After the electric film compartment receives the instruction, the synchronous belt stepper motor starts to operate, and the two sets of slides are driven to move through the synchronous belt, and a set of clamping mechanisms 2 connected to the slides move to the position corresponding to the changed size specification of the film; then, the stepper motor of the clamping mechanism 2 starts to operate, and the clamping plate 13 opens to place the astronomical film 5 to be scanned on the supporting plate 14 of the clamping mechanism 2; after the film compartment receives the scanning instruction, the stepper motor of the clamping mechanism 2 starts the clamping action, driving the clamping plate 13 to rotate, and the film supporting plate 14 provides an upward supporting force by the clamping spring, and works together with the clamping plate 13 to clamp the film; after the film compartment finishes the action, the scanner starts scanning the entire film.

[0034] The above describes in detail the implementation modes of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes. For ordinary technicians in this technical field, after knowing the contents recorded in the present invention, they can make several equivalent changes and substitutions thereto without departing from the principle of the present invention. These equivalent changes and substitutions should also be regarded as belonging to the protection scope of the present invention.

Claims

1. An electric negative film magazine device for an astronomical negative film digitizing and scanning device, characterized in that, It includes a bottom plate, and a pair of pressing mechanisms are symmetrically installed on the bottom plate. A sliding table mechanism is connected between the two pressing mechanisms, and the sliding table mechanism is configured to control at least one of the pressing mechanisms to move so as to reduce or increase the distance between the two pressing mechanisms; The pressing mechanism includes: A support plate for carrying astronomical negatives; A pressing plate is installed above the support plate, and one side of the pressing plate is connected to a pressing shaft, and the pressing shaft is configured to drive the pressing plate to swing closer to or away from the support plate.

2. The electric negative film bin device for an astronomical negative film digital scanning device according to claim 1, characterized in that: The pressing mechanism further includes a support spring and a support guide rail. The support guide rail is located below the support plate, and the support spring is installed between the support plate and the support guide rail, and the support spring tends to drive the support plate to move toward the pressing plate side.

3. An electric film magazine device for an astronomical negative digitizing and scanning device according to claim 1 or 2, characterized in that: A pressing stepping motor is installed on one side of the pressing shaft, and the output shaft of the pressing stepping motor is connected to the pressing shaft through a coupling, and the pressing stepping motor is used to drive the pressing shaft to rotate.

4. The electric negative film magazine device for an astronomical negative film digitizing and scanning device according to claim 1, characterized in that: The sliding table mechanism includes a ball screw. Both ends of the ball screw are supported by bearings. A slider is installed on at least one of the pressing mechanisms. The slider is engaged with the ball screw through a nut, and the rotation of the ball screw drives the slider and the corresponding pressing mechanism to move.

5. The electric negative film magazine device for an astronomical negative film digitizing and scanning device according to claim 4, characterized in that: A linear guide rail is arranged parallel to the axis direction at the bottom of the ball screw, and the slider is slidably connected to the linear guide rail.

6. The electric negative film magazine device for an astronomical negative film digitizing and scanning device according to claim 4 or 5, characterized in that: There are two sliding table mechanisms, which are symmetrically arranged at both ends of the pressing mechanism. Sliders are installed at both ends of the pressing mechanism, and the two sliders are respectively engaged with the corresponding ball screws through nuts.

7. The electric negative film magazine device for an astronomical negative film digitizing and scanning device according to claim 6, characterized in that: A synchronous belt drive mechanism is installed on one side of the two sliding table mechanisms. The synchronous belt drive mechanism is connected to the ball screws of the two sliding table mechanisms, and the synchronous belt drive mechanism is configured to drive the two ball screws to rotate synchronously.

8. An electric negative film magazine device for an astronomical negative film digitizing and scanning device according to claim 7, characterized in that: The synchronous belt drive mechanism includes a synchronous belt pulley, a synchronous belt and a synchronous belt drive stepping motor. Synchronous belt pulleys are installed at both ends of the two ball screws. The synchronous belt is sleeved on the two synchronous belt pulleys. The synchronous belt drive stepping motor is connected to the synchronous belt and drives the two synchronous belt pulleys to perform a rotary shaft movement synchronously through the synchronous belt.

9. The electric negative film magazine device for an astronomical negative film digitizing and scanning device according to claim 8, characterized in that: An idler pulley is arranged on one side of the synchronous belt, and the idler pulley is used to provide a tension force for the synchronous belt.

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