Off-line detection platform

Abstract

The utility model provides an off-line detection platform. The off-line detection platform comprises a display assembly, an air suction plate assembly, a detection assembly, a movement assembly, a frame assembly and an industrial personal computer assembly, the air suction plate assembly is fixedly installed at the top end of the frame assembly, a to-be-detected printed product is flatly laid on the top face of the air suction plate assembly, the movement assemblies are fixedly installed at the top end of the frame assembly and the two opposite sides of the air suction plate assembly, a shooting module is arranged on the detection assembly, and the two ends of the detection assembly are connected to the movement assemblies respectively. The detection assembly is driven by the movement assembly to linearly move in the length or width direction of the air suction plate assembly, the shooting module shoots a to-be-detected printing product on the top face of the air suction plate assembly, the industrial personal computer assembly conducts printing quality detection on shot images, and a detection result is displayed through the display assembly. The air suction plate assembly of the off-line detection platform can ensure smooth product adsorption, the product detection quality is high, the register or spot check efficiency is high, and the labor intensity of workers can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of printing product detection, in particular to an offline detection device or an offline detection platform for offline printing quality detection of single printed products. Background Art

[0002] With the rapid development of printing technology at home and abroad, people pay more and more attention to the printing quality of printing products. The performance of printing machines has been greatly improved in terms of printing quality. However, due to the printing process, operator control standards and mechanical precision, a series of quality problems will inevitably occur in the printing process, such as dirty spots, missing prints, white spots, ink spots, broken strokes, flying ink, graphic errors and other types of minor printing defects, resulting in scrapped or defective products.

[0003] How to detect these scrapped or defective products is an important requirement in the printing process. Many printing companies rely on quality inspection staff to patrol and inspect product quality. Due to differences in employee quality and work experience, their grasp of product quality varies greatly. Relying on human visual inspection is greatly affected by subjective factors, and manual inspection efficiency is low, feedback speed is slow, and inspection quality is low. It cannot well meet the needs of large-scale production of modern printing companies. At the same time, as the degree of automation of printing becomes higher and higher, the speed becomes faster and faster, and the requirements for corresponding inspection technology are also getting higher and higher; therefore, there is an urgent need for an automated offline inspection equipment or offline inspection platform. Utility Model Content

[0004] In response to the problems mentioned in the above background technology, the utility model provides a new offline detection platform that can be used for offline alignment and sampling detection of single products, so as to realize alignment of printed products before production and sampling detection during the printing process, reduce the probability of printing errors of printed products, and improve product quality and production efficiency.

[0005] The utility model adopts the following technical solution: an offline detection platform, including a display assembly, an air suction plate assembly, a detection assembly, a motion assembly, a frame assembly and an industrial control computer assembly, wherein the display assembly and the industrial control computer assembly are respectively mounted on the upper part and the lower part of the frame assembly;

[0006] The suction plate assembly is fixedly mounted on the top of the frame assembly, and the printed product to be tested is laid flat on the top surface of the suction plate assembly. The motion assembly is fixedly mounted on the top of the frame assembly and on opposite sides of the suction plate assembly. A shooting module is provided on the detection assembly, and both ends of the detection assembly are respectively connected and mounted on the motion assembly so that the shooting module is directly above the suction plate assembly. The detection assembly is driven by the motion assembly to move linearly along the length or width direction of the suction plate assembly, and the shooting module shoots the printed product to be tested on the top surface of the suction plate assembly; the industrial computer assembly performs printing quality inspection on the shot image, and displays the inspection results through the display assembly.

[0007] Furthermore, the suction plate assembly includes a suction plate and a fan, and a plurality of air vents are evenly distributed on the suction plate. The plurality of fans are fixedly installed in an array on the bottom surface of the suction plate. The multiple air vent areas covered by one fan or two or more adjacent fans constitute a detection area, and the printed product to be tested is flatly laid in at least one detection area on the top surface of the suction plate.

[0008] Furthermore, the air suction plate assembly also includes a first gear bar, a second gear bar and a third gear bar. The first gear bar and the second gear bar are fixedly installed in the length direction of one side of the top surface of the air suction plate. The first gear bar and the second gear bar are arranged in a collinear manner and are separated by a preset distance. The third gear bar is fixedly installed in the width direction of one side of the top surface of the air suction plate.

[0009] Furthermore, the air suction plate assembly also includes support bars, hexagonal columns, longitudinal beams, mounting seats and fan mounting bars. Multiple support bars, longitudinal beams, mounting seats and fan mounting bars are combined and installed to form a fan mounting frame. The fan mounting frame is fixedly installed on the bottom surface of the air suction plate through multiple hexagonal columns, and multiple fans are fixedly installed in an array on multiple fan mounting bars.

[0010] Furthermore, the detection component includes a wire pressing plate, a drag chain connecting plate, a mounting base, and a camera and light source integrated module. The two mounting bases are respectively connected and installed on the motion component, and the two wire pressing plates and the drag chain connecting plate are respectively fixedly installed on the two mounting bases. The two ends of the camera and light source integrated module are respectively connected and installed on the two mounting bases. The shooting module includes a camera and a light source arranged on the bottom surface of the camera and light source integrated module. The camera shoots the printed product to be tested on the top surface of the suction plate assembly, and the light source irradiates the printed product to be tested on the top surface of the suction plate assembly.

[0011] Furthermore, the two ends of the camera and light source integrated module are respectively connected and installed on two mounting bases through a height adjustment component, and the relative height of the camera and light source integrated module and the air suction plate assembly can be adjusted through the height adjustment component. The height adjustment component includes an oil-containing bearing, a movable seat, a screw rod, a fixed plate, an adjustment knob and a guide column. The two movable seats are respectively fixedly installed at the two ends of the camera and light source integrated module, the oil-containing bearing is fixed in the movable seat, the fixed plate is fixedly installed at the top of the mounting base, the guide column is fixedly installed at the bottom of the fixed plate, and the guide column is linearly slidably connected in the oil-containing bearing, the adjustment knob is fixedly connected to the top of the screw rod, and the bottom end of the screw rod passes through the through hole opened in the fixed plate and is screwed to the threaded through hole opened on the movable seat. The relative height of the camera and light source integrated module and the air suction plate assembly can be adjusted by rotating the adjustment knob.

[0012] Furthermore, the motion assembly includes a reduction assembly, a servo motor, a coupling, a transmission shaft, a module slider, a synchronous belt module and a mounting bracket. The synchronous belt module includes a mounting bracket and a synchronous belt mounted on the mounting bracket. The two mounting brackets are fixedly mounted on the top of the frame assembly and on opposite sides of the air suction plate assembly through the mounting bracket.

[0013] The two module sliders are installed on the mounting frame and can slide along the length direction of the mounting frame. The two module sliders are fixedly connected to two synchronous belts respectively. The two synchronous belts are connected to the transmission shaft through a coupling. The transmission shaft is driven by a servo motor through a reduction assembly.

[0014] Furthermore, the display assembly includes a display, a display bracket, a first connecting square tube, a second connecting square tube and a keyboard placement board. One end of the first connecting square tube is fixedly connected to the frame assembly, and the other end is connected and installed with the second connecting square tube. The display bracket is connected and installed with the keyboard placement board on the second connecting square tube. The display is installed on the display bracket, and the keyboard is set on the keyboard placement board.

[0015] Furthermore, the frame assembly as a whole is composed of a left frame and a right frame connected by four cross braces, a display mounting plate is fixedly installed on the cross brace at the top, the display mounting plate is used to connect and install the display assembly, a bottom plate is flatly installed at the bottom of the left frame and the right frame, used to support the industrial computer assembly, a layer plate is flatly installed in the middle of the left frame and the right frame, an electrical panel is connected between the cross brace at the top and the layer plate, and casters are fixedly installed at the bottom of the left frame and the right frame;

[0016] A left vertical beam and a right vertical beam are fixedly installed between the two horizontal braces at the top. The left vertical beam and the right vertical beam are used to connect and install the suction plate assembly. Two mounting plates are fixedly installed between the two horizontal braces at the top. Drag chain mounting grooves are provided on the mounting plates. The left drag chain and the right drag chain are respectively installed in the two drag chain mounting grooves. The moving assembly is fixedly installed on the top of the left frame and the right frame.

[0017] The offline detection platform in this utility model patent has the following beneficial effects: the printed product to be tested is laid flat on the top surface of the suction plate, and the fans are arranged in an array on the bottom surface of the suction plate. Only the fans in the corresponding areas can be turned on according to the printed products of different sizes. While ensuring the flat adsorption of the product, it can also save energy and protect the environment and reduce noise pollution. A servo motor is used to drive two synchronous belts to move synchronously through couplings and drive shafts. The synchronous belt drives the detection component to realize linear motion, ensuring the smooth operation of the shooting module and improving the detection accuracy of the whole machine. At the same time, the height adjustment component can be used to fine-tune and calibrate the distance between the shooting module and the product surface, avoiding image distortion during the shooting process, so that the product inspection quality is high, the plate alignment or random inspection efficiency is high, and the labor intensity of workers can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attachment Figure 1 This is a schematic diagram of the overall structure of the offline detection platform in the utility model;

[0019] Attachment Figure 2 It is a schematic structural diagram of the display assembly 1 in the present utility model;

[0020] Attachment Figure 3 This is a schematic diagram of the structure of the air suction plate assembly 2 in the utility model Figure 1 ;

[0021] Attachment Figure 4 This is a schematic diagram of the structure of the air suction plate assembly 2 in the utility model Figure 2 ;

[0022] Attachment Figure 5 It is a structural diagram and a partial enlarged diagram of the detection component 3 in the present utility model;

[0023] Attachment Figure 6 It is a schematic structural diagram of the motion component 4 in the present utility model;

[0024] Attachment Figure 7 It is a structural diagram of the frame assembly 5 in the present utility model;

[0025] The accompanying drawings are marked as follows: display assembly 1, display 1.1, display bracket 1.2, first connecting square tube 1.3, second connecting square tube 1.4, keyboard placement plate 1.5, air suction plate assembly 2, first gear bar 2.1, second gear bar 2.2, third gear bar 2.3, air suction plate 2.4, support bar 2.5, hexagonal column 2.6, fan 2.7, longitudinal beam 2.8, mounting seat 2.9, fan mounting bar 2.10, detection assembly 3, oil-containing bearing 3.1, movable seat 3.2, screw rod 3.3, fixed plate 3.4, adjustment knob 3.5, guide column 3.6, wire pressing plate 3.7, drag chain Connecting plate 3.8, mounting base 3.9, camera and light source integrated module 3.10, motion assembly 4, reduction assembly 4.1, servo motor 4.2, coupling 4.3, drive shaft 4.4, module slider 4.5, timing belt module 4.6, mounting support 4.7, frame assembly 5, display mounting plate 5.1, electrical panel 5.2, casters 5.3, cross brace 5.4, bottom plate 5.5, shelf 5.6, left drag chain 5.7, right frame 5.8, right vertical beam 5.9, left vertical beam 5.10, right drag chain 5.11, left frame 5.12, drag chain mounting slot 5.13, industrial computer assembly 6. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. The following further describes the contents of the utility model in conjunction with the drawings:

[0027] Example 1

[0028] Refer to the instruction manual Figure 1 An offline detection platform includes a display component 1, an air suction plate component 2, a detection component 3, a motion component 4, a frame component 5 and an industrial computer component 6.

[0029] Refer to the instruction manual Figure 7The frame assembly 5 is composed of a left frame 5.12 and a right frame 5.8 connected by four cross braces 5.4. A display mounting plate 5.1 is fixedly installed on the cross brace 5.4 at the top. A bottom plate 5.5 is installed flatly at the bottom of the left frame 5.12 and the right frame 5.8. The industrial computer assembly 6 is placed or installed on the bottom plate 5.5. A layer plate 5.6 is installed flatly in the middle of the left frame 5.12 and the right frame 5.8. An electrical panel 5.2 is connected between the cross brace 5.4 at the top and the layer plate 5.6. The electrical panel 5.2 is a complete set of equipment for centrally installing switches, instruments and other equipment. It consists of a cabinet, switches, protection devices, electric energy meters, etc., which is used to facilitate power outages and power supply, and plays a role and function of metering and protection. Casters 5.3 are fixedly installed at the bottom of the left frame 5.12 and the right frame 5.8 to facilitate the movement of the entire offline detection platform.

[0030] A left vertical beam 5.10 and a right vertical beam 5.9 are fixedly installed between the two horizontal braces 5.4 at the top. Two mounting plates are fixedly installed between the two horizontal braces 5.4 at the top. The left vertical beam 5.10 and the right vertical beam 5.9 are located between the two mounting plates. A drag chain mounting groove 5.13 is provided on the mounting plate. A left drag chain 5.7 and a right drag chain 5.11 are respectively installed in the two drag chain mounting grooves 5.13. The fixed ends of the left drag chain 5.7 and the right drag chain 5.11 are installed at one end of the drag chain mounting groove. The left drag chain 5.7 and the right drag chain 5.11 are used to restrain the cables to facilitate their rotation and movement, and at the same time play a role of traction and protection.

[0031] Refer to the instruction manual Figure 2 The display assembly 1 includes a display 1.1, a display bracket 1.2, a first connecting square tube 1.3, a second connecting square tube 1.4 and a keyboard placement plate 1.5. One end of the first connecting square tube 1.3 is fixedly connected to the display mounting plate 5.1, and the other end is connected and installed with the second connecting square tube 1.4. The display bracket 1.2 is connected to the keyboard placement plate 1.5 and installed on the second connecting square tube 1.4. The display 1.1 is installed on the display bracket 1.2 and is used to display the printing quality inspection results in the form of pictures and / or text. The keyboard is set on the keyboard placement plate 1.5 for users to input commands, data and information through keys.

[0032] Refer to the instruction manual Figure 3 、 4The air suction plate assembly 2 includes a first gear bar 2.1, a second gear bar 2.2, a third gear bar 2.3, an air suction plate 2.4, a support bar 2.5, a hexagonal column 2.6, a fan 2.7, a longitudinal beam 2.8, a mounting seat 2.9 and a fan mounting bar 2.10; a plurality of ventilation holes are evenly distributed on the air suction plate 2.4, and the first gear bar 2.1 and the second gear bar 2.2 are fixedly installed in the length direction of one side of the top surface of the air suction plate 2.4 by screws. The first gear bar 2.1 and the second gear bar 2.2 are collinearly arranged and There is a preset distance between the two, which is convenient for taking and placing the printed product to be tested. The third gear bar 2.3 is fixedly installed in the width direction of one side of the top surface of the suction plate 2.4 by screws. The length edge of the printed product to be tested is in contact with the first gear bar 2.1 and the second gear bar 2.2, and the width edge is in contact with the third gear bar 2.3, so that the first gear bar 2.1 and the second gear bar 2.2 position the printed product to be tested in the length direction, and the third gear bar 2.3 positions the printed product to be tested in the width direction;

[0033] A plurality of support bars 2.5, longitudinal beams 2.8, mounting seats 2.9 and fan mounting bars 2.10 are assembled and installed to form a fan mounting frame, which is fixedly mounted on the bottom surface of the air suction plate 2.4 through a plurality of hexagonal columns 2.6, and is fixedly connected and installed with the right vertical beam 5.9 and the right vertical beam 5.10 through the mounting seat 2.9, so that the air suction plate assembly 2 is fixedly mounted on the top of the frame assembly 5; specifically, the hexagonal columns 2.6 are fixedly connected between the mounting seat 2.9 and the air suction plate 2.4 by gluing, welding or screws, and the hexagonal columns 2.6 play the role of supporting the air suction plate 2.4. A plurality of fans 2.7 are fixedly mounted in an array on a plurality of fan mounting bars 2.10, and are located on the bottom surface of the air suction plate 2.4. The multiple ventilation hole areas covered by a fan 2.7 constitute a detection area. The printed products to be tested are flatly laid on the top surface of the air suction plate 2.4. According to the different sizes of printed products, only the fans 2.7 in the area covered by the printed products can be turned on. While ensuring the flat adsorption of the products, it can also save energy, be environmentally friendly and reduce noise pollution.

[0034] When the printed product to be tested is laid flat on the top surface of the suction plate 2.4, the fan 2.7 in the area covered by the printed product is turned on to make the air on the top surface of the suction plate 2.4 flow toward the bottom surface of the suction plate 2.4, forming negative pressure, and adsorbing the printed product on the top surface of the suction plate 2.4 to ensure that the product is adsorbed flatly and stably.

[0035] Refer to the instruction manual Figure 6 The motion assembly 4 includes a reduction assembly 4.1, a servo motor 4.2, a coupling 4.3, a transmission shaft 4.4, a module slider 4.5, a synchronous belt module 4.6 and a mounting support 4.7. The synchronous belt module 4.6 includes a mounting frame and a synchronous belt mounted on the mounting frame.

[0036] The two mounting frames are fixedly mounted on the top of the left frame 5.12 and the right frame 5.8 respectively through mounting supports 4.7. The two module sliders 4.5 are mounted on the mounting frames and can slide along the length direction of the mounting frames. The two module sliders 4.5 are fixedly connected to two synchronous belts respectively. The two synchronous belts are connected to the transmission shaft 4.4 through a coupling 4.3. The transmission shaft 4.4 is driven by a servo motor 4.2 through a reduction assembly 4.1. The synchronous belt can drive the two module sliders 4.5 to synchronously move linearly along the length direction of the mounting frames.

[0037] The traditional truss structure adopts a drive at one end and a follower slider at the other end. This structure has relatively poor adaptability to detection platforms with high synchronization requirements. To address this problem, this patent adopts a motor to drive two synchronous belts to move synchronously through the coupling 4.3 and the drive shaft 4.4. Compared with the traditional truss structure, it can ensure smooth operation and improve the detection accuracy of the whole machine.

[0038] Refer to the instruction manual Figure 5 The detection component 3 includes an oil-containing bearing 3.1, a movable seat 3.2, a screw 3.3, a fixed plate 3.4, an adjustment knob 3.5, a guide column 3.6, a pressure plate 3.7, a drag chain connecting plate 3.8, a mounting base 3.9 and a camera and light source integrated module 3.10; the two mounting bases 3.9 are respectively fixedly mounted on the module slider 4.5, and the two pressure plates 3.7 and the drag chain connecting plate 3.8 are respectively fixedly mounted on the two mounting bases 3.9. Since there are many cables in the camera and light source integrated module 3.10, the cables are introduced into the frame assembly through the pressure plate 3.7 5, the left drag chain 5.7 and the right drag chain 5.11 are finally connected to the electrical panel 5.2, the drag chain connecting plate 3.8 is fixedly connected to the movable ends of the left drag chain 5.7 and the right drag chain 5.11, and drives the movable ends of the left drag chain 5.7 and the right drag chain 5.11 to move along with the mounting base 3.9; the shooting module includes a camera and a light source arranged on the bottom surface of the camera and light source integrated module 3.10, the camera shoots an image of the printed product to be tested on the top surface of the suction plate assembly 2, and the light source illuminates the printed product to be tested on the top surface of the suction plate assembly 2, so that the shot image is clearer.

[0039] In order to fine-tune and calibrate the distance between the camera and light source integrated module 3.10 and the air suction plate 2.4 to prevent image distortion during camera scanning and effectively ensure the camera's detection accuracy of the product, the two ends of the camera and light source integrated module 3.10 are connected and installed on two mounting bases 3.9 through height adjustment components. The height adjustment components include an oil-containing bearing 3.1, a movable seat 3.2, a screw rod 3.3, a fixed plate 3.4, an adjustment knob 3.5 and a guide column 3.6. The two movable seats 3.2 are fixedly installed at both ends of the camera and light source integrated module 3.10. The oil-containing bearing 3.1 is fixed in the movable seat 3.2, the fixed plate 3.4 is fixedly mounted on the top of the mounting base 3.9, and the guide post 3.6 is fixedly mounted on the bottom of the fixed plate 3.4. One movable seat 3.2 and one fixed plate 3.4 are arranged vertically opposite each other. The guide post 3.6 is linearly slidably connected in the oil-containing bearing 3.1, that is, the guide post 3.6 slides vertically along the oil-containing bearing 3.1. The adjustment knob 3.5 is fixedly connected to the top of the screw rod 3.3. The bottom end of the screw rod 3.3 passes through a through hole provided in the fixed plate 3.4 and is screwed to the threaded through hole provided in the movable seat 3.2.

[0040] By synchronously rotating the two adjustment knobs 3.5, the screw rod 3.3 is driven to rotate respectively, thereby driving the two movable seats 3.2 together with the camera and light source integrated module 3.10 to move vertically up and down, so that the relative height of the camera and light source integrated module 3.10 and the suction plate assembly 2 can be adjusted, that is, the relative height of the camera and light source integrated module 3.10 and the printed product to be tested can be adjusted.

[0041] The off-line inspection platform described in the patent has the following inspection method: first, the printed product to be tested is laid flat on the top surface of the suction plate 2.4, and the printed product to be tested is positioned by the positions of the first gear bar 2.1, the second gear bar 2.2 and the third gear bar 2.3. The fan 2.7 in the area covered by the printed product to be tested is turned on to generate negative pressure through the vents to adsorb the printed product to be tested on the top surface of the suction plate 2.4. The two adjustment knobs 3.5 are rotated synchronously to drive the screw rod 3.3 to rotate respectively, thereby driving the two movable seats 3.2 together with the camera and light source integrated module 3.10 to move vertically. Move to the target height; start the servo motor 4.2, decelerate through the reduction assembly 4.1, and drive the two synchronous belts to move through the coupling 4.3 and the transmission shaft 4.4. The synchronous belts drive the two mounting supports 4.7 and the mounting base 3.9 to move synchronously, so that the detection assembly 3 as a whole moves linearly along the length or width direction of the suction plate 2.4. During the movement, the light source on the detection assembly 3 illuminates the printed product to be tested on the top surface of the suction plate assembly 2, and the camera on the detection assembly 3 captures the image of the printed product to be tested on the top surface of the suction plate assembly 2;

[0042] The image information obtained after shooting is transmitted to the industrial computer component 6 through a signal. The industrial computer component 6 performs printing quality inspection on the shot image, and transmits the printing quality inspection result to the display component 1 to display the inspection result, and marks and prompts the corresponding quality defects.

[0043] The specific method for the industrial computer component 6 to perform printing quality inspection on the captured image can be: an image comparison module and a standard image template of the printed product to be tested are provided in the industrial computer component 6. After the image information captured by the camera is transmitted to the industrial computer component 6 through a signal, the captured image information and the standard image template are compared through the image comparison module. The comparison content includes but is not limited to: dirty spots, missing prints, white spots, ink spots, broken strokes, flying ink, graphic errors, printing colors and other factors. The industrial computer component 6 will display the compared images (captured image information and standard image template) and the printing quality inspection comparison results through the display of the display component 1 in the form of pictures and / or text, and mark and prompt the corresponding quality defects to achieve printing quality inspection of the printed product to be tested.

[0044] Obviously, modifications and / or additions of components can be made to the above-described offline detection platform and the corresponding method without departing from the field and scope of the present invention.

[0045] It is also clear that although the present invention has described the offline detection platform in detail, those skilled in the art will certainly be able to obtain many other equivalent forms of offline detection platforms and corresponding methods, which have the characteristics as described in the claims and are therefore within the scope of the protection field defined thereby.

Claims

1. An offline detection platform, characterized by: The device comprises a display assembly (1), an air suction plate assembly (2), a detection assembly (3), a motion assembly (4), a frame assembly (5) and an industrial control computer assembly (6), wherein the display assembly (1) and the industrial control computer assembly (6) are respectively mounted on the upper part and the lower part of the frame assembly (5); The suction plate assembly (2) is fixedly mounted on the top of the frame assembly (5), and the printed product to be tested is laid flat on the top surface of the suction plate assembly (2). The motion assembly (4) is fixedly mounted on the top of the frame assembly (5) and on two opposite sides of the suction plate assembly (2). A shooting module is provided on the detection assembly (3), and both ends of the detection assembly (3) are respectively connected and mounted on the motion assembly (4) so that the shooting module is located directly above the suction plate assembly (2). The detection assembly (3) is driven by the motion assembly (4) to move linearly along the length or width direction of the suction plate assembly (2), and the shooting module shoots the printed product to be tested on the top surface of the suction plate assembly (2); the industrial computer assembly (6) performs printing quality inspection on the shot image and displays the inspection result through the display assembly (1).

2. The offline detection platform according to claim 1, characterized in that: The air suction plate assembly (2) comprises an air suction plate (2.4) and a fan (2.7); a plurality of air vents are evenly and densely distributed on the air suction plate (2.4); a plurality of fans (2.7) are fixedly mounted in an array on the bottom surface of the air suction plate (2.4); a plurality of air vent areas covered by one fan (2.7) or two or more adjacent fans (2.7) constitute a detection area; and a printed product to be tested is laid flat in at least one detection area on the top surface of the air suction plate (2.4).

3. The offline detection platform according to claim 2, characterized in that: The air suction plate assembly (2) further comprises a first gear bar (2.1), a second gear bar (2.2) and a third gear bar (2.3); the first gear bar (2.1) and the second gear bar (2.2) are fixedly mounted in the length direction of one side of the top surface of the air suction plate (2.4); the first gear bar (2.1) and the second gear bar (2.2) are collinearly arranged with a preset distance between them; and the third gear bar (2.3) is fixedly mounted in the width direction of one side of the top surface of the air suction plate (2.4).

4. The offline detection platform according to claim 2, characterized in that: The air suction plate assembly (2) further comprises a support bar (2.5), a hexagonal column (2.6), a longitudinal beam (2.8), a mounting seat (2.9) and a fan mounting bar (2.10); a plurality of the support bars (2.5), the longitudinal beam (2.8), the mounting seat (2.9) and the fan mounting bar (2.10) are assembled and installed to form a fan mounting frame; the fan mounting frame is fixedly mounted on the bottom surface of the air suction plate (2.4) via a plurality of hexagonal columns (2.6); and a plurality of the fans (2.7) are fixedly mounted in an array on the plurality of fan mounting bars (2.10).

5. The offline detection platform according to claim 1, characterized in that: The detection assembly (3) comprises a wire pressing plate (3.7), a drag chain connecting plate (3.8), a mounting base (3.9), and a camera and light source integrated module (3.10); the two mounting bases (3.9) are respectively connected and mounted on the motion assembly (4); the two wire pressing plates (3.7) and the drag chain connecting plate (3.8) are respectively fixedly mounted on the two mounting bases (3.9); the two ends of the camera and light source integrated module (3.10) are respectively connected and mounted on the two mounting bases (3.9); the shooting module comprises a camera and a light source arranged on the bottom surface of the camera and light source integrated module (3.10); the camera shoots the printed product to be tested on the top surface of the air suction plate assembly (2); and the light source irradiates the printed product to be tested on the top surface of the air suction plate assembly (2).

6. The offline detection platform according to claim 5, characterized in that: The two ends of the camera and light source integrated module (3.10) are respectively connected and mounted on two mounting bases (3.9) via a height adjustment assembly. The relative height of the camera and light source integrated module (3.10) and the air suction plate assembly (2) can be adjusted via the height adjustment assembly. The height adjustment assembly comprises an oil-containing bearing (3.1), a movable seat (3.2), a screw rod (3.3), a fixed plate (3.4), an adjustment knob (3.5) and a guide column (3.6). The two movable seats (3.2) are respectively fixedly mounted on the two ends of the camera and light source integrated module (3.10). The oil-containing bearing (3.1) is fixed on the movable seat. The fixing plate (3.4) is fixedly mounted on the top of the mounting base (3.9) in the seat (3.2), the guide column (3.6) is fixedly mounted on the bottom of the fixing plate (3.4), and the guide column (3.6) is linearly slidably connected to the oil-containing bearing (3.1), the adjusting knob (3.5) is fixedly connected to the top of the screw rod (3.3), the bottom of the screw rod (3.3) passes through the through hole provided on the fixing plate (3.4), and is screwed to the threaded through hole provided on the movable seat (3.2), and the relative height of the camera and light source integrated module (3.10) and the air suction plate assembly (2) can be adjusted by rotating the adjusting knob (3.5).

7. The offline detection platform according to claim 1, characterized in that: The motion assembly (4) includes a reduction assembly (4.1), a servo motor (4.2), a coupling (4.3), a transmission shaft (4.4), a module slider (4.5), a synchronous belt module (4.6) and a mounting support (4.7); the synchronous belt module (4.6) includes a mounting frame and a synchronous belt mounted on the mounting frame; the two mounting frames are fixedly mounted on the top of the frame assembly (5) and on opposite sides of the air suction plate assembly (2) via the mounting support (4.7); The two module sliders (4.5) are mounted on the mounting frame and can slide along the length direction of the mounting frame. The two module sliders (4.5) are fixedly connected to two synchronous belts respectively. The two synchronous belts are connected to the transmission shaft (4.4) through a coupling (4.3). The transmission shaft (4.4) is driven by a servo motor (4.2) through a reduction assembly (4.1).

8. The offline detection platform according to claim 1, characterized in that: The display assembly (1) comprises a display (1.1), a display bracket (1.2), a first connecting square tube (1.3), a second connecting square tube (1.4) and a keyboard placement plate (1.5); one end of the first connecting square tube (1.3) is fixedly connected to the frame assembly (5), and the other end is connected and mounted to the second connecting square tube (1.4); the display bracket (1.2) is connected and mounted to the keyboard placement plate (1.5) on the second connecting square tube (1.4); the display (1.1) is mounted on the display bracket (1.2); and the keyboard is arranged on the keyboard placement plate (1.5).

9. The offline detection platform according to claim 1, characterized in that: The frame assembly (5) is formed as a whole by a left frame (5.12) and a right frame (5.8) connected by four cross braces (5.4); a display mounting plate (5.1) is fixedly mounted on the cross brace (5.4) at the top; the display mounting plate (5.1) is used to connect and mount the display assembly (1); a base plate (5.5) is flatly mounted at the bottom of the left frame (5.12) and the right frame (5.8) for supporting the industrial computer assembly (6); a layer plate (5.6) is flatly mounted in the middle of the left frame (5.12) and the right frame (5.8); an electrical panel (5.2) is connected between the cross brace (5.4) at the top and the layer plate (5.6); and casters (5.3) are fixedly mounted at the bottom of the left frame (5.12) and the right frame (5.8); A left vertical beam (5.10) and a right vertical beam (5.9) are fixedly installed between the two horizontal braces (5.4) at the top. The left vertical beam (5.10) and the right vertical beam (5.9) are used to connect and install the air suction plate assembly (2). Two mounting plates are fixedly installed between the two horizontal braces (5.4) at the top. A drag chain mounting groove (5.13) is provided on the mounting plates. A left drag chain (5.7) and a right drag chain (5.11) are respectively installed in the two drag chain mounting grooves (5.13). The motion assembly (4) is fixedly installed on the top of the left frame (5.12) and the top of the right frame (5.8).

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