CN111948160B - A scanning system for spectrodensitometer - Google Patents

Abstract

A scanning system applied to a spectrophotometer comprises a spectrophotometer, a base plate, a slide plate, a transverse driving assembly, a longitudinal moving mechanism, a longitudinal guide rail and a vertical moving mechanism. The vertical moving mechanism is respectively connected to the base plate and the slide plate to drive the base plate and the slide plate to move vertically relative to each other. A slide plate holder is installed on the spectrophotometer. The spectrophotometer is detachably mounted on the slide plate via the slide plate holder. The transverse driving assembly is installed on the base plate. The spectrophotometer is connected to the transverse driving assembly via the slide plate holder to drive the spectrophotometer to move horizontally. The base plate is detachably connected to the longitudinal guide rail. The longitudinal moving mechanism is installed on the base plate to drive the base plate to move relative to the longitudinal guide rail. The scanning system can move in six directions to facilitate scanning by a scanner. The scanning system has a compact structure and can be detachably installed to facilitate carrying by users. The scanner can be removed at any time for handheld scanning according to user needs.

Description

A scanning system for spectrodensitometer

Technical Field

The invention relates to the field of scanning systems, and in particular to a scanning system applied to a spectroscopic densitometer.

Background Art

With the development of society, the improvement of people's economic level and the fierce competition among various industries, people have higher and higher requirements for the quality of printed products. How to control the quality of printed products and print good products is a common concern of producers and operators. To print good printed products that satisfy customers, not only close cooperation between various processes is required, but also the influence of color, ink, overprinting, paper and many other aspects must be considered.

Printing quality is the goal pursued by printing companies. From the perspective of process flow, the quality of pre-press not only affects the quality of printed products, but also affects the production cycle and cost of printing. There are many factors that affect the quality of printed products. Pre-press plate making is the premise for producing qualified printed products. If there is a problem in a certain link of the pre-press plate making process, it may cause a lot of trouble to the subsequent processes, or even irreparable losses. Therefore, we must do a comprehensive and detailed inspection of pre-press documents, films, plates, etc. to ensure that our printed products can produce printed products that meet customer needs without any problems in the later stage.

Spectrophotometers have appeared in the printing industry for a long time. They can measure the amount of reflected light and incident light of the ink to assess the amount of light absorbed by the ink layer, and then detect the brightness factors of various colors on the surface of the printed product. Spectrophotometers use a 45/0 geometric optical structure to compare the differences in the luminosity and intensity of the incident light, and use the absorption spectrum of the substance to identify the substance or determine its content. They are often used in the platemaking industry and various printing industries to help companies achieve comprehensive color control from prepress to workshop production. Simply put, a spectrophotometer is a precision optical instrument that supports automated measurement of ink density, printing characteristics, printing contrast, hue error, grayscale, density scanning and other functions.

Many companies use manual scanning to measure spectrophotometers, which is inefficient and the measurement is not accurate enough, and the advantages of spectrophotometers cannot be fully reflected.

There are also some scanning systems used in spectrodensitometers. Compared with manual scanning, the efficiency is much higher, but there are still some problems. These scanning devices have only a single track and can only move in a single straight line, and cannot automatically perform single-point measurement. It is impossible to adjust the distance between the scanning head of the spectrodensitometer and the paper according to the actual working conditions, which affects the measurement effect. In addition, the track is prone to jamming during operation, resulting in unsatisfactory measurement results of the spectrodensitometer.

Summary of the invention

In view of the above shortcomings, the technical problem to be solved by the present invention is to provide a scanning system for a spectroscopic densitometer. The scanning system has three tracks and can perform linear motion in six directions, which is convenient for the scanner to scan. The scanning system has a compact structure and can be installed in a detachable manner, which is convenient for users to carry. The scanner can be removed at any time for handheld scanning according to user needs. The transmission system runs smoothly and the measurement is accurate, which can help enterprises effectively control printing quality and reduce material and labor costs.

In order to solve the above technical problems, the technical solution adopted by the present invention is:

A scanning system applied to a spectrodensitometer comprises a spectrodensitometer, a base plate, a slide rail base plate, a transverse driving assembly, a longitudinal moving mechanism, a longitudinal guide rail and a vertical moving mechanism. The vertical moving mechanism is respectively connected to the base plate and the slide rail base plate to drive the base plate and the slide rail base plate to move vertically relative to each other. A slide rail holder is installed on the spectrodensitometer. The spectrodensitometer is detachably mounted on the slide rail base plate via the slide rail holder. The transverse driving assembly is installed on the base plate. The spectrodensitometer is connected to the transverse driving assembly via the slide rail holder to drive the spectrodensitometer to move horizontally. The base plate is detachably connected to the longitudinal guide rail. The longitudinal moving mechanism is installed on the base plate to drive the base plate to move relative to the longitudinal guide rail.

Furthermore, the slide rail base includes a detachably connected slide rail connector and a drive connector. The spectrodensitometer is slidably mounted on the slide rail base plate through the slide rail connector. The drive connector is slidably mounted on the base plate. The drive connector is connected to the transverse drive assembly so that the drive connector slides on the base plate.

Furthermore, the slide rail clamping component includes a first connecting plate and a hanging ear, the hanging ear is fixedly connected to the first connecting plate, a track hanging groove is formed between the hanging ear and the first connecting plate, and the first connecting plate is fixedly mounted on the spectrodensitometer.

Furthermore, a limiting groove is dug at the end of the driving connecting member, and the slide rail clamping member and the limiting groove are clamped with each other, so that the slide rail clamping member and the driving connecting member move simultaneously.

Furthermore, an upper guide wheel and a lower guide wheel are installed on the driving connecting member, and the upper guide wheel and the lower guide wheel are respectively located on the upper and lower end surfaces of the base plate. Correspondingly, guide grooves are dug on the two side end surfaces of the base plate, and the upper guide wheel and the lower guide wheel are respectively installed in the guide grooves.

Furthermore, the transverse driving assembly includes a driving motor, a driven wheel, a tensioning wheel group and a synchronous belt. The driven wheel and the tensioning wheel group are rotatably mounted on the base plate. The synchronous belt is connected to the driven wheel and the tensioning wheel group. The driving motor is connected to the synchronous belt to drive the synchronous belt to move.

Furthermore, the vertical moving mechanism includes a vertical driving assembly and a vertical guiding assembly. The vertical driving assembly is respectively connected to the base plate and the slide rail seat plate to drive the base plate and the slide rail seat plate to move relative to each other. Similarly, the vertical guiding assembly is respectively connected to the base plate and the slide rail seat plate.

Furthermore, the longitudinal moving mechanism includes a longitudinal moving shaft, a longitudinal synchronous pulley and a longitudinal synchronous belt. The longitudinal moving shaft is rotatably mounted on the base plate, the longitudinal synchronous pulleys are mounted in pairs at both ends of the longitudinal moving shaft, the longitudinal synchronous belt is fixedly mounted on the longitudinal guide rail, and the longitudinal synchronous pulley is engaged with the longitudinal synchronous belt.

Furthermore, a longitudinal driving mechanism is fixedly mounted on the base plate.

Furthermore, a paper pressing board group is fixedly installed on the slide rail seat plate. The paper pressing board group includes a connecting plate and a paper pressing board. The paper pressing board is installed on the slide rail seat plate through the connecting plate.

The beneficial effects of the present invention are as follows: (1) the scanning system has three tracks and can perform linear motion in six directions, which is convenient for the scanner to scan; and the scanning system has a compact structure and can be installed in a detachable manner, which is convenient for users to carry, and the scanner can be removed at any time for handheld scanning according to user needs.

(2) The spectrodensitometer is slidably mounted on the base plate through a slide rail holder, which can prevent the spectrodensitometer from directly contacting the base plate, improve the stability of the movement of the spectrodensitometer, and improve the scanning quality.

(3) The relative height of the slide rail base plate is controlled by the vertical moving mechanism, thereby adjusting the relative height of the scanner, making it easier to adjust the distance between the scanner and the paper and improving the scanning accuracy. The base plate is detachably connected to the longitudinal guide rail through the longitudinal moving mechanism. The longitudinal guide rail and the base plate can be separated when carrying. Users can assemble the drive structure at any time according to their needs.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the structure of the present invention with the cover hidden.

FIG. 2 is a schematic diagram of the structure of FIG. 1 after being rotated at a certain angle.

FIG. 3 is a partial enlarged view of point A. FIG.

FIG. 4 is a partial enlarged view of point B. FIG.

FIG. 5 is a schematic diagram of the structure with the longitudinal guide rail hidden.

FIG. 6 is a schematic diagram of the structure of a longitudinal drive mechanism using a worm gear.

FIG. 7 is a schematic diagram of the structure of the lateral drive structure of the spectrodensitometer.

FIG. 8 is a top view of the lateral drive structure of the spectrodensitometer.

FIG. 9 is a cross-sectional view of the lateral drive structure of the spectrodensitometer.

FIG10 is a partial enlarged view of point C. FIG.

FIG. 11 is a schematic diagram of the mechanism of the slide rail holder.

FIG. 12 is a schematic diagram of the structure of FIG. 5 after being rotated to a certain angle.

FIG. 13 is a partial enlarged view of point D. FIG.

FIG. 14 is a schematic structural diagram of the present invention.

Figure numerals: spectrodensitometer 1, base plate 2, drive assembly 3, slide rail holder 4, slide rail seat plate 5, lifting screw 6, slide rail connector 7, drive connector 8, first connecting plate 9, hanging ear 10, track hanging groove 11, limit groove 12, upper guide wheel 13, lower guide wheel 14, guide groove 15, take-up block 16, wire groove 17, drive motor 18, driven wheel 19, tensioning wheel assembly 20, synchronous belt 21, first tensioning wheel 22, second tensioning wheel 23, tensioning wheel mounting hole 24, tensioning wheel mounting groove 25, lifting slider 26, shaft mounting portion 27, lateral movement assembly mounting portion 28, shaft through hole 29, guide rail portion 30, connecting portion 31, machine cover 32, longitudinal moving mechanism 1-1, vertical moving machine Structure 1-2, longitudinal guide rail 1-3, vertical drive assembly 1-4, vertical guide assembly 1-5, screw motor 1-6, screw nut 1-7, ball screw 1-8, vertical guide fixing seat 1-9, guide sleeve 1-10, guide column 1-11, longitudinal movable shaft 1-12, longitudinal synchronous pulley 1-13, longitudinal synchronous belt 1-14, longitudinal guide assembly 1-15, longitudinal roller 1-16, longitudinal roller shaft 1-17, guide groove 1-18, transmission groove 1-19, longitudinal drive mechanism 1-20, turbine 1-22, worm 1-23, worm motor 1-21, paper pressing board group 1-24, second connecting plate 1-25, paper pressing board 1-26, slide groove 1-27, and snap-in piece 1-28.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with the accompanying drawings.

A scanning system for a spectrophotometer comprises a spectrophotometer 1, a base plate 2, a slide rail base plate 5, a transverse driving assembly 3, a longitudinal moving mechanism 1-1, a longitudinal guide rail 1-3 and a vertical moving mechanism 1-2. The vertical moving mechanism is respectively connected to the base plate and the slide rail base plate to change the spacing between the base plate 2 and the slide rail base plate 5. The scanner is mounted on the slide rail base plate 5. Since the base plate 2 is mounted on the longitudinal guide rail 1-3, the relative height of the base plate 2 remains unchanged. The relative height of the slide rail base plate 5 is controlled by the vertical moving mechanism 1-2, thereby adjusting the relative height of the scanner, facilitating adjustment of the distance between the scanner and paper, and improving scanning accuracy. A slide rail holder 4 is fixedly mounted on the spectrophotometer 1. The spectrophotometer 1 is detachably mounted on the slide rail base plate 5 through the slide rail holder 4. The transverse driving assembly 3 is mounted on the base plate 2. 3 is connected with the slide rail holder 4 to drive the spectrophotometer 1 to slide on the base plate 2. When the spectrophotometer 1 is directly connected with the transverse driving component 3, it is easy to cause the transverse driving component 3 to deform, and the spectrophotometer 1 is easy to contact with the base plate 2, so that the spectrophotometer 1 moves poorly. The spectrophotometer 1 is slidably installed on the base plate 2 by the slide rail holder 4, which can prevent the spectrophotometer 1 from directly contacting the base plate 2, improve the stability of the movement of the spectrophotometer 1, and improve the scanning forming quality. The base plate 2 is detachably connected with the longitudinal guide rail 1-3 through the longitudinal moving mechanism 1-1. The longitudinal guide rail 1-3 can be disassembled from the base plate 2 when carrying. The user can assemble the driving structure at any time according to the needs. It has a simple structure, is easy to carry, runs smoothly, and measures accurately. It can help enterprises effectively control printing quality and reduce material and labor costs.

The lower end of the base plate 2 is liftably mounted with a slide rail seat plate 5, and the slide rail holder 4 is also slidably connected to the slide rail seat plate 5. The slide rail holder 4 is slidably connected to the slide rail seat plate 5 and the base plate 2 at the same time, which can improve the operating stability of the spectrodensitometer 1.

A lifting screw rod 6 is fixedly installed on the base plate 2, and correspondingly, a lifting slider 26 is installed on the slide rail seat plate 5. The lifting screw rod 6 is adapted to the lifting slider 26, and the base plate 2 and the slide rail seat plate 5 can be lifted and connected. By rotating the lifting screw rod 6, the relative positions of the base plate 2 and the slide rail seat plate 5 can be adjusted.

The slide rail base 4 includes a detachably connected slide rail connector 7 and a drive connector 8. The spectrodensitometer 1 is slidably installed on the slide rail base plate 5 through the slide rail connector 7. The drive connector 8 is slidably installed on the base plate 2. The drive connector 8 is connected to the transverse drive assembly 3 so that the drive connector 8 slides on the base plate 2. Through the setting of the detachably connected slide rail connector 7 and the drive connector 8, the user can install the spectrodensitometer on the scanning device according to his own needs, and can also perform handheld scanning.

The slide rail clamp 7 includes a first connecting plate 9 and a hanging ear 10, the hanging ear 10 is fixedly connected to the first connecting plate 9, a rail hanging groove 11 is formed between the hanging ear 10 and the first connecting plate 9, the rail hanging groove 11 is slidably installed on the slide rail seat plate 5, and the first connecting plate 9 is fixedly installed on the spectrodensitometer 1, so as to facilitate the sliding installation of the spectrodensitometer 1 on the slide rail seat plate 5.

A limiting groove 12 is dug at the end of the driving connector 8, and the slide rail clamp 7 and the limiting groove 12 are clamped together so that the slide rail clamp 7 and the driving connector 8 move simultaneously. Preferably, the limiting groove 12 is arranged in a vertical direction to facilitate the removal of the slide rail clamp 7 from the clamping groove 12, thereby facilitating the user to disassemble and assemble the spectrodensitometer 1.

An upper guide wheel 13 and a lower guide wheel 14 are installed on the driving connecting member 8. The upper guide wheel 13 and the lower guide wheel 14 are respectively located on the upper and lower end surfaces of the base plate 2. Correspondingly, guide grooves 15 are dug on the two side end surfaces of the base plate 2. The upper guide wheel 13 and the lower guide wheel 14 are respectively installed in the guide grooves 15. Through the setting of the upper and lower guide wheels, the driving connecting member 8 is always connected to the base plate 2, thereby improving the seismic resistance of the driving connecting member 8, thereby improving the scanning accuracy of the spectrodensitometer 1.

A wire take-up block 16 is connected to one side of the driving connector 8 , and a wire groove 17 is dug inside the wire take-up block 16 . The wire groove 17 is used to fix the data wire on the spectrodensitometer 1 to prevent the data wire from interfering with the operation of the driving connector 8 .

The transverse driving assembly 3 includes a driving motor 18, a driven wheel 19, a tensioning wheel group 20 and a synchronous belt 21. The driven wheel 19 and the tensioning wheel group 20 are rotatably installed on the base plate 2. The synchronous belt 21 is connected to the driven wheel 19 and the tensioning wheel group 20. The driving motor 18 is connected to the synchronous belt 21 to drive the synchronous belt 21 to move, thereby driving the optical density meter 1 to move. Preferably, a driving pulley is installed on the driving motor 18, and the driving pulley is meshed with the synchronous belt 21.

The tensioning wheel group 20 includes a first tensioning wheel 22 and a second tensioning wheel 23. The first tensioning wheel 22 and the second tensioning wheel 23 are installed on a side close to the drive motor 18, so that the synchronous belt 21 close to the drive motor 18 is U-shaped. The arrangement of the first tensioning wheel 22 and the second tensioning wheel 23 facilitates the increase of the tension of the synchronous belt 21, prevents the failure of the connection of the slide rail clamping part 7 and the drive connecting part 8, and improves the stability of the drive mechanism. The drive motor 18 is connected to the U-shaped synchronous belt 21, increases the contact area between the synchronous belt 21 and the drive pulley, and prevents the synchronous belt 21 and the drive pulley from slipping.

A tension wheel mounting hole 24 and a tension wheel mounting groove 25 are dug on the base plate 2. The first tension wheel 22 is installed in the tension wheel mounting hole 24, and the second tension wheel 23 is installed in the tension wheel mounting groove 25 to adjust the position of the second tension wheel 23 relative to the first tension wheel 23 to improve the installation efficiency of the tension wheel. When the synchronous belt 21 is loose, the second tension wheel 23 can be adjusted to tighten the synchronous belt 21 again.

The vertical moving mechanism 1-2 includes a vertical driving component 1-4 and a vertical guiding component 1-5. The vertical driving component 1-4 is respectively connected to the base plate 2 and the slide rail seat plate 5 to drive the base plate 2 and the slide rail seat plate 5 to move relative to each other in the vertical direction. Similarly, the vertical guiding component 1-5 is respectively connected to the base plate 2 and the slide rail seat plate 5. Through the setting of the vertical guiding component 1-5, it is convenient to improve the stability of the relative movement between the base plate 2 and the slide rail seat plate 5, thereby improving the scanning accuracy.

The vertical drive assembly 1-4 includes a screw motor 1-6, a screw nut 1-7 and a ball screw 1-8. The ball screw 1-8 is connected to the screw motor 1-6 to drive the ball screw 1-8 to rotate. The screw nut 1-7 is sleeved on the outside of the ball screw 1-8. The screw motor 1-6 is fixedly mounted on the base plate 2, and the screw nut 1-7 is fixedly mounted on the slide rail seat plate 5. Through the setting of the screw and the screw nut 1-7, it is convenient to adjust the distance between the base plate 2 and the slide rail seat plate 5.

The vertical guide assembly 1-5 includes a vertical guide fixing seat 1-9, a guide sleeve 1-10 and a guide column 1-11. The vertical guide fixing seat 1-9 is fixedly mounted on the base plate 2, the guide sleeve 1-10 is mounted on the vertical guide fixing seat 1-9, the guide column 1-11 is mounted on the slide rail seat plate 5, and the guide column 1-11 is slidably connected to the guide sleeve 1-10. Through the arrangement of the guide sleeve 1-10 and the guide column 1-11, it is convenient to improve the stability of the relative movement between the base plate 2 and the slide rail seat plate 5, thereby improving the scanning accuracy. Preferably, the guide sleeve 1-10 is a linear bearing.

The longitudinal moving mechanism 1-1 includes a longitudinal moving shaft 1-12, a longitudinal synchronous pulley 1-13 and a longitudinal synchronous belt 1-14. The longitudinal moving shaft 1-12 is rotatably mounted on the base plate 2. Preferably, the longitudinal moving shaft 1-12 passes through the base plate 2. The longitudinal synchronous pulleys 1-13 are mounted in pairs at both ends of the longitudinal moving shaft 1-12. The longitudinal synchronous belt 1-14 is fixedly mounted on the longitudinal guide rail 1-3. The longitudinal synchronous pulley 1-13 is engaged with the longitudinal synchronous belt 1-14. The base plate 2 is longitudinally moved by the longitudinal moving mechanism 1-1, thereby facilitating the longitudinal movement of the scanner.

Longitudinal guide assemblies 1-15 are also fixedly installed at both ends of the base plate 2. The longitudinal guide assemblies 1-15 include longitudinal rollers 1-16 and longitudinal roller shafts 1-17. The longitudinal roller shafts 1-17 are fixedly installed at both ends of the base plate 2. The longitudinal rollers 1-16 are rotatably installed on the longitudinal roller shafts 1-17. Through the setting of the longitudinal guide assemblies 1-15, it is convenient to improve the movement accuracy of the longitudinal guide assemblies 1-15, prevent the scanner from vibrating, and improve the scanning accuracy.

A guide groove 1-18 and a transmission groove 1-19 are dug on the longitudinal guide rail 1-3, the longitudinal synchronous belt 1-14 is fixedly installed in the transmission groove 1-19, the longitudinal synchronous pulley 1-13 is detachably installed in the transmission groove 1-19, and the longitudinal roller 1-16 is detachably installed in the guide groove 1-18.

A longitudinal driving mechanism 1-20 is fixedly mounted on the base plate 2. As one preferred solution, the longitudinal driving mechanism 1-20 is a toggle lever, which is manually toggle-driven to drive the longitudinal moving mechanism 1-1 to move. As another preferred solution, the longitudinal driving mechanism 1-20 includes a turbine 1-22, a worm 1-23 and a worm motor 1-21. The worm motor 1-21 is fixedly mounted on the base plate 2. The worm is connected to the worm motor 1-21. The turbine is fixedly mounted on the longitudinal moving shaft 1-12. The turbine 1-22 is matched with the worm 1-23. The worm motor 1-21 drives the worm turbine to rotate, thereby driving the longitudinal moving shaft 1-12 to rotate, thereby realizing the movement of the base plate 2.

A paper pressing plate group 1-24 is fixedly installed on the slide rail seat plate 5. The paper pressing plate group 1-24 includes a second connecting plate 1-25 and a paper pressing plate 1-26. The paper pressing plate 1-26 is installed on the slide rail seat plate 5 through the second connecting plate 1-25. Through the setting of the paper pressing plate group 1-24, it is convenient to press the paper on the scanning side, thereby further improving the scanning accuracy.

A slide groove 1-27 is dug on the second connecting plate 1-25, and correspondingly, a snap-in piece 1-28 is connected on both sides of the paper pressing plate 1-26. The snap-in piece 1-28 is connected to the slide groove 1-27. Preferably, the snap-in piece 1-28 and the slide groove 1-27 are slidably connected to each other. When the height to which the scanner needs to descend is greater than the distance between the paper pressing plate 1-26 and the paper surface, the snap-in piece 1-28 of the paper pressing plate can slide relative to the slide groove 1-27, thereby facilitating further descent of the scanner.

The base plate 2 includes a rotating shaft mounting portion 27 and a transverse movement assembly mounting portion 28. A rotating shaft through hole 29 is dug in the rotating shaft mounting portion 27. The rotating shaft through hole 29 is used to install the longitudinal moving shaft 1-12, so that the longitudinal moving shaft 1-12 passes through the base plate 2. The transverse movement assembly mounting portion is used to install the transverse movement drive assembly 3.

The slide rail seat plate 5 includes a guide rail portion 30 and a connecting portion 31 . The guide rail portion 30 is vertically connected to the connecting portion 31 . The guide rail portion 30 is used to install the slide rail clamping component 7 , so that the slide rail clamping component 7 can slide relatively on the slide rail seat plate 5 .

In some preferred embodiments, a machine cover 32 is provided on the top of the base plate 2 to protect the top of the scanning system from dust.

The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims (6)

1. The scanning system for the spectrodensimeter is characterized by comprising the spectrodensimeter (1), a base plate (2), a sliding rail base plate (5), a transverse moving driving assembly (3), a longitudinal moving mechanism (1-1), a longitudinal guide rail (1-3) and a vertical moving mechanism (1-2), wherein the vertical moving mechanism (1-2) is respectively connected with the base plate (2) and the sliding rail base plate (5) to drive the base plate (2) and the sliding rail base plate (5) to vertically and relatively move, the sliding rail base plate (4) is arranged on the spectrodensimeter, the spectrodensimeter (1) is detachably arranged on the sliding rail base plate (5) through the sliding rail base plate (4), the transverse moving driving assembly (3) is arranged on the base plate (2), the spectrodensimeter (1) is connected with the transverse moving driving assembly (3) through the sliding rail base plate (4), the base plate (2) is detachably connected with the longitudinal guide rail (1-3), the longitudinal moving mechanism (1-1) is arranged on the base plate (2), and the longitudinal guide rail (2) is relatively moved;

The longitudinal moving mechanism (1-1) comprises a longitudinal moving shaft (1-12), a longitudinal synchronous pulley (1-13) and a longitudinal synchronous belt (1-14), the longitudinal moving shaft (1-12) is rotatably arranged on the base plate (2), the longitudinal synchronous pulleys (1-13) are arranged at two ends of the longitudinal moving shaft (1-12) in pairs, the longitudinal synchronous belt (1-14) is fixedly arranged on the longitudinal guide rail (1-3), and the longitudinal synchronous pulley (1-13) is kneaded with the longitudinal synchronous belt (1-14);

the slide rail clamping seat (4) comprises a slide rail clamping piece (7) and a driving connecting piece (8) which are detachably connected, the spectrodensimeter (1) is slidably mounted on the slide rail seat board (5) through the slide rail clamping piece (7), the driving connecting piece (8) is slidably mounted on the base board (2), and the driving connecting piece (8) is connected with the transverse moving driving assembly (3) so that the driving connecting piece (8) slides on the base board (2);

The transverse movement driving assembly (3) comprises a driving motor (18), a driven wheel (19), a tensioning wheel set (20) and a synchronous belt (21), wherein the driven wheel (19) and the tensioning wheel set (20) are rotatably arranged on the base plate (2), the synchronous belt (21) is connected with the driven wheel (19) and the tensioning wheel set (20), the driving motor (18) is connected with the synchronous belt (21), and the synchronous belt (21) is driven to move;

The vertical moving mechanism (1-2) comprises a vertical driving assembly (1-4) and a vertical guiding assembly (1-5), the vertical driving assembly (1-4) is respectively connected with the base plate (2) and the sliding rail base plate (5), the base plate (2) and the sliding rail base plate (5) are driven to move relatively in the vertical direction, and the vertical guiding assembly (1-5) is respectively connected with the base plate (2) and the sliding rail base plate (5).

2. Scanning system for a densitometer according to claim 1, characterized in that the slide rail clamping part (7) comprises a first connection plate (9) and a hanging lug (10), the hanging lug (10) is fixedly connected to the first connection plate (9), a rail hanging groove (11) is formed between the hanging lug (10) and the first connection plate (9), and the first connection plate (9) is fixedly mounted on the densitometer (1).

3. Scanning system for optical densitometer according to claim 2, characterized in that the end of the drive connection (8) is provided with a limit groove (12), the slide rail clamping element (7) and the limit groove (12) are clamped with each other, so that the slide rail clamping element (7) and the drive connection (8) move simultaneously.

4. A scanning system for a spectrodensitometer according to claim 3, characterized in that the upper guide wheel (13) and the lower guide wheel (14) are mounted on the driving connecting piece (8), the upper guide wheel (13) and the lower guide wheel (14) are respectively located on the upper side end face and the lower side end face of the base plate (2), the corresponding side end faces of the base plate (2) are provided with guide grooves (15), and the upper guide wheel (13) and the lower guide wheel (14) are respectively mounted in the guide grooves (15).

5. Scanning system for optical densitometry according to claim 1, characterized in that the base plate (2) is fixedly provided with a longitudinal drive mechanism (1-20).

6. Scanning system for a spectroscopic densitometer according to claim 1, characterized in that the slide plate (5) is fixedly provided with a paper pressing plate group (1-24), the paper pressing plate group (1-24) comprising a second connecting plate (1-25) and paper pressing plates (1-26), the paper pressing plates (1-26) being arranged on the slide plate (5) via the second connecting plate (1-25).