Printed product color difference detection device and method

Abstract

The present invention discloses a device and method for detecting color difference of printed matter, and relates to the technical field of color difference detection of printed matter. The device comprises a placement seat, wherein two vertical telescopic bars are fixedly mounted on the top of the placement seat, and the output ends of the two vertical telescopic bars are fixedly mounted with T-shaped plates, and the sides of the T-shaped plates away from the vertical telescopic bars are fixedly mounted with color difference detectors, and the top of the placement seat is provided with a plurality of evenly arranged adsorption holes. When the present invention is in use, the printed matter to be detected is placed on the top of the placement seat, and the printed matter is located below a smoothing roller. The smoothing roller can smooth the printed matter, and at the same time, an exhaust fan forms a negative pressure below the printed matter, so that the smoothed printed matter will not be reset due to elasticity. At the same time, a pressurizing mechanism can stabilize the air pressure below the printed matter, so that the adsorption air pressure of different printed matters is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of printed matter color difference detection, and in particular to a printed matter color difference detection device and method. Background Art

[0002] Currently, printing is the process of transferring approved printing plates to substrates using printing machinery and specialized inks. During the printing process, it is necessary to detect the color difference of the printed products. Currently, color difference detection devices are used in the printing process.

[0003] When performing color difference detection on existing printed materials, if the printed materials are warped or bent, the color difference detection results of the printed materials will be affected. The existing technology also has a setting for using a roller to flatten and remove wrinkles on the printed materials during detection. However, when used on some elastic printed materials, although the roller temporarily flattens them, they will still warp and bend after the roller rolls over. For this reason, we disclose a device and method for detecting color difference on printed materials. Summary of the Invention

[0004] The present invention provides a device and method for detecting color difference of printed matter, so as to solve the problem proposed in the background art that when performing color difference detection on existing printed matter, if the printed matter is warped or bent, the color difference detection result of the printed matter will be affected. In the prior art, there is also a setting for using a roller to flatten and remove wrinkles on the printed matter during detection. However, when used on some elastic printed matter, although the roller temporarily flattens it, it will still warp and bend after the roller rolls over it.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a printed matter color difference detection device, comprising a placement seat, two vertical telescopic bars are fixedly mounted on the top of the placement seat, T-shaped plates are fixedly mounted on the output ends of the two vertical telescopic bars, a color difference detector is fixedly mounted on the side of the T-shaped plate away from the vertical telescopic bars, a plurality of evenly arranged adsorption holes are opened on the top of the placement seat, two smoothing rollers are arranged above the placement seat, two support plates are fixedly mounted on the bottom of the placement seat, two moving blocks are mounted on the sides of the two support plates via a threaded drive mechanism, wherein the two moving blocks are connected to the two smoothing rollers via a connecting mechanism;

[0006] Two vertical plates are arranged above the moving block, and the vertical sides of the two vertical plates are provided with a plurality of evenly arranged side through holes, the bottoms of the vertical plates are fixedly mounted on the tops of the two adjacent moving blocks, the sides of the two vertical plates close to each other are installed with telescopic plates and triangular plates, the sides of the two telescopic plates close to each other are fixedly mounted with horizontal plates, the two sides of the horizontal plate are respectively fixedly connected to the sides of the two support plates close to each other, a plurality of circular holes are provided on the top of the horizontal plate, pipes are fixedly mounted in the plurality of circular holes, exhaust fans are fixedly mounted in the plurality of pipes, and boosting mechanisms are installed on the sides of the two vertical plates away from each other.

[0007] As a preferred technical solution of the present invention, the tops of the two triangular plates are in contact with the bottom of the placement seat, the sides of the two triangular plates that are close to each other are in contact, the two vertical plates and the two side portions of the two triangular plates are in contact with the sides of the two support plates that are close to each other, and the two side portions of the telescopic plate are in contact with the sides of the two support plates that are close to each other.

[0008] As a preferred technical solution of the present invention, L-shaped mounting rods are fixedly mounted on the tops of the four moving blocks, and the bottom of the vertical plate is fixedly mounted on the tops of two adjacent L-shaped mounting rods.

[0009] As a preferred technical solution of the present invention, the connecting mechanism includes a connecting rod fixedly installed on the sides of the two moving blocks, a rectangular sleeve is fixedly installed on the ends of the two connecting rods away from the moving blocks, a rectangular rod is slidably installed in the two rectangular sleeves, a mounting bracket is fixedly installed on the top of the two rectangular rods, the two smoothing rollers are rotatably installed in the two mounting brackets respectively, a blocking assembly is installed on one side of the placement seat, and the blocking assembly is connected to the two rectangular rods and the sides of the two rectangular sleeves;

[0010] The side of the support plate is provided with an avoidance hole, and the two connecting rods pass through the two avoidance holes respectively.

[0011] As an optimal technical solution of the present invention, the blocking assembly includes a blocking groove opened on one side of the placement seat, the blocking groove is connected to the multiple adsorption holes, a blocking plate is slidably installed in the blocking groove, and the top of the blocking plate is provided with multiple evenly arranged air holes, and the multiple air holes are staggered with the multiple adsorption holes. One side of the blocking plate extends to the outside of the blocking groove and is fixedly installed with a U-shaped moving rod, and both side parts of the placement seat are fixedly installed with horizontal telescopic bars, and the output ends of the two horizontal telescopic bars are fixedly connected to the two side parts of the U-shaped moving rod, and two movable sliders are slidably sleeved on the U-shaped moving rod, and the sides of the two movable sliders close to each other are rotatably installed with a lower rotating rod and an upper rotating rod, the bottom ends of the two upper rotating rods are respectively rotatably installed on the side parts of the two rectangular sleeves, and the top ends of the two lower rotating rods are respectively rotatably installed on the sides of the two rectangular rods.

[0012] As a preferred technical solution of the present invention, the telescopic plate includes multiple U-shaped plates and a connecting plate, and a limiting groove is provided on the side of the horizontal plate. The thickness of the multiple U-shaped plates decreases successively. Among the two adjacent U-shaped plates, the U-shaped plate with smaller thickness is slidably installed in the U-shaped plate with larger thickness, and the U-shaped plate with the largest thickness is slidably installed in the limiting groove, and the connecting plate is slidably installed in the U-shaped plate with the smallest thickness. The connecting plate is fixedly installed on the side of the vertical plate away from the side of the U-shaped plate.

[0013] As a preferred technical solution of the present invention, the thread drive mechanism includes four side plates, the side of each side plate is fixedly mounted on the side of the adjacent support plate, and the sides of two of the side plates are fixedly mounted with servo motors;

[0014] The output shaft of the servo motor passes through the side of the side plate adjacent to it and is fixedly mounted with a forward and reverse threaded rod, and one end of the forward and reverse threaded rod away from the servo motor is rotatably mounted on the side of the side plate adjacent to it;

[0015] The sides of the two moving blocks close to each other are both provided with threaded holes, the internal threads in the two threaded holes are arranged oppositely, and the two oppositely arranged external threads on the forward and reverse threaded rods are respectively threadedly installed in the two threaded holes.

[0016] As a preferred technical solution of the present invention, the boosting mechanism includes two vertical sealing plates, the sides of the two vertical sealing plates close to each other are in contact with the sides of the two vertical plates away from each other, the bottoms of the two vertical sealing plates are fixedly installed with L-shaped connecting rods, the sides of the two L-shaped connecting rods are fixedly installed with extrusion rods, the sides of the support plate are installed with two extrusion frames through adjustment components, one end of the two extrusion rods extends into the two extrusion frames respectively, and the sides of the two vertical sealing plates away from each other are installed with two reset components;

[0017] The reset assembly includes a limit block fixedly installed on the side of the vertical sealing plate, a limit hole is provided on the top of the limit block, a guide rod is slidably installed in the limit hole, a stop block is fixedly installed on the top of the guide rod, and the bottom end of the guide rod is fixedly installed on the top of the corresponding L-shaped mounting rod. A spring is sleeved on the guide rod, and both ends of the spring are respectively fixedly installed on the sides of the stop block and the limit block that are close to each other.

[0018] As a preferred technical solution of the present invention, the adjusting assembly includes a threaded adjusting rod, a fixed block is threadedly sleeved on the threaded adjusting rod, the side of the fixed block is fixedly connected to the side of the support plate, the top of the threaded adjusting rod is fixedly installed with a knob, the bottom end of the threaded adjusting rod is rotatably installed with an extrusion block, the side of the extrusion block is slidably connected to the side of the support plate, two circular holes are provided on the side of the support plate, cylinders are rotatably installed in the two circular holes, one end of the two cylinders are respectively fixedly connected to the sides of the two extrusion frames, and the ends of the two cylinders away from the extrusion frames are fixedly installed with eccentrically arranged compression rods, and a rectangular hole is provided on the side of the extrusion block, and the two compression rods respectively pass through the two rectangular holes.

[0019] The present application also discloses a method for detecting color difference of printed matter, which comprises the following steps:

[0020] Step 1: Place the printed matter to be inspected on the top of the placement seat, with the printed matter located below the smoothing roller. At this time, start the two horizontal telescopic bars to move the U-shaped moving rod, which drives the two moving sliders to move, thereby rotating the two upper rotating rods and the two lower rotating rods, thereby causing the two rectangular rods and the two mounting racks to move downward. The downward movement of the two mounting racks drives the two smoothing rollers to move downward, thereby contacting the top of the printed matter. At the same time, the movement of the U-shaped moving rod drives the blocking plate to move, so that the air vents on the blocking plate correspond to the positions of the adsorption holes on the placement seat.

[0021] Step 2. Then start the two servo motors and the two exhaust fans. The two exhaust fans will extract the air between the two vertical plates and the two support plates, thereby generating negative pressure. The outside air can enter through multiple side through-holes. The output shafts of the two servo motors rotate to drive the two positive and negative threaded rods to rotate. The rotation of the two positive and negative threaded rods drives the four moving blocks to move. The movement of the two moving blocks drives the movement of the two connecting rods. The movement of the two connecting rods drives the movement of the two rectangular sleeves. The movement of the two rectangular sleeves drives the movement of the two rectangular rods and the two mounting racks. The movement of the two mounting racks drives the movement of the two smoothing rollers, thereby smoothing the printed matter. At the same time, the movement of the four moving blocks drives the movement of the four L-shaped mounting rods respectively. The movement of the four L-shaped mounting rods drives the movement of the two vertical plates and the two triangular plates, thereby separating the two triangular plates, causing the adsorption holes and the air vents to leak out, thereby generating suction to adsorb the smoothed printed matter and make it flat.

[0022] Step 3. Adjust the angle of the extrusion frame according to the length of the printed product. If the printed product is short, after it is placed on the placement seat, the adsorption holes covered by the printed product are smaller, so that after the two triangular plates are opened, the adsorption holes and air holes between the two vertical plates and the two support plates are not covered, and the overall number of air inlet holes increases. Therefore, it is necessary to close the side through-holes to ensure the adsorption force on the printed product. First, turn the knob to make the threaded adjustment rod spirally rotate downward, so that the extrusion block moves downward, and the rectangular holes on the extrusion block squeeze the two pressure rods to rotate. The rotation of the two pressure rods drives the two cylinders to rotate, and the rotation of the two cylinders drives the two The two extrusion frames rotate, thereby changing the inclination of the two extrusion frames. In the process of the movement of the two vertical plates driving the movement of the two vertical sealing plates, the movement of the two vertical sealing plates causes the two L-shaped connecting rods to move. The movement of the two L-shaped connecting rods drives the two extrusion rods to move respectively in the two extrusion frames. The inner walls of the two extrusion frames squeeze the two extrusion rods, thereby causing the two extrusion rods to move downward, thereby causing the two L-shaped connecting rods and the two vertical sealing plates to move downward, the two reset assemblies to deform, and the two vertical sealing plates to move to slowly block the multiple side through holes, thereby ensuring that the number of air inlet holes between the two vertical plates and the two support plates does not continue to increase;

[0023] Step 4. Finally, start the color difference detector to perform color difference detection on the printed matter. After the detection is completed, start the two horizontal telescopic bars to move the two U-shaped moving rods, thereby moving the blocking plate. The air holes on the blocking plate do not correspond to the adsorption holes, thereby stopping the adsorption of the printed matter. At the same time, the movement of the U-shaped moving rod causes the lower rotating rod to rotate, thereby moving the rectangular rod, the mounting frame and the smoothing roller upward, and then the printed matter can be taken out.

[0024] Compared with the prior art, the present invention provides a printed matter color difference detection device, which has the following beneficial effects:

[0025] When the present invention is in use, the printed matter to be inspected is placed on the top of the placement seat, and the printed matter is located below the smoothing roller. The printed matter can be smoothed by the smoothing roller, and at the same time, the exhaust fan forms a negative pressure below the printed matter, so that the smoothed printed matter will not be reset due to elasticity. At the same time, the boosting mechanism can stabilize the air pressure below the printed matter, so that the adsorption air pressure of different printed matters is stable.

[0026] In the present invention, in the process of the movement of the two vertical plates driving the movement of the two vertical sealing plates, the movement of the two vertical sealing plates causes the two L-shaped connecting rods to move, and the movement of the two L-shaped connecting rods drives the two extrusion rods to move respectively in the two extrusion frames. The inner walls of the two extrusion frames squeeze the two extrusion rods so that the two extrusion rods move downward, and then the two L-shaped connecting rods and the two vertical sealing plates move downward, the two guide rods are deformed, and the two vertical sealing plates move to slowly block multiple side through holes, thereby ensuring that the number of air inlet holes located between the two vertical plates and the two support plates will not continue to increase, thereby ensuring their adsorption force.

[0027] In the present invention, rotating the knob causes the threaded adjustment rod to spirally rotate downward, thereby causing the extrusion block to move downward, and the rectangular hole on the extrusion block squeezes the two pressure rods to rotate them, and the rotation of the two pressure rods drives the two cylinders to rotate, and the rotation of the two cylinders drives the two extrusion frames to rotate, thereby changing the inclination of the two extrusion frames. The greater the inclination of the extrusion frame, the faster the vertical sealing plate descends, and it can be used for shorter printed materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a first perspective perspective diagram of the present invention;

[0029] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 is a second perspective perspective schematic diagram of the present invention;

[0031] Figure 4 A cross-sectional view of the placement seat of the present invention;

[0032] Figure 5 This is a cross-sectional view of the connection between the transverse plate and the telescopic plate of the present invention;

[0033] Figure 6 is a third perspective perspective schematic diagram of the present invention;

[0034] Figure 7 It is an enlarged view of part of the boosting mechanism of the present invention;

[0035] Figure 8 for Figure 6 Enlarged view of point B in the middle;

[0036] Figure 9 A planar cross-sectional view of the placement seat and the blocking plate of the present invention;

[0037] Figure 10 This is an exploded view of the extrusion block and the compression rod of the present invention.

[0038] Figure: 1, color difference detector; 2, placement seat; 3, support plate; 4, side plate; 5, servo motor; 6, positive and negative threaded rod; 7, vertical telescopic rod; 8, T-shaped plate; 9, blocking plate; 10, U-shaped moving rod; 11, moving slider; 12, upper rotating rod; 13, rectangular sleeve; 14, lower rotating rod; 15, moving block; 16, connecting rod; 17, horizontal telescopic rod; 18, adsorption hole; 19, vertical plate; 20, side through hole; 21, guide rod; 2 2. L-shaped mounting rod; 23. Horizontal plate; 24. Telescopic plate; 25. Triangular plate; 26. Fixed block; 27. Threaded adjustment rod; 28. Compression rod; 29. ​​Extrusion block; 30. Cylinder; 31. Extrusion frame; 32. Knob; 33. Vertical sealing plate; 34. L-shaped connecting rod; 35. Extrusion rod; 36. Exhaust fan; 37. Pipe; 38. Limit block; 39. Stop block; 40. Spring; 41. Air vent; 42. Rectangular rod; 43. Smoothing roller. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation. The structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement solutions or common means, they will not be described in detail herein, but they still fall within the scope of protection of this application.

[0040] Figures 1-10 The best embodiment of the present invention is shown below in conjunction with the attached Figures 1-10 The present invention is further described.

[0041] The present invention discloses a printed matter color difference detection device, including a placement seat 2, two vertical telescopic bars 7 are fixedly installed on the top of the placement seat 2, T-shaped plates 8 are fixedly installed on the output ends of the two vertical telescopic bars 7, and a color difference detector 1 is fixedly installed on the side of the T-shaped plate 8 away from the vertical telescopic bars 7. The color difference detector 1 is a color difference detector in a printed matter color difference detection device disclosed in prior art publication number CN217688542U. A plurality of evenly arranged adsorption holes 18 are opened on the top of the placement seat 2, two smoothing rollers 43 are arranged above the placement seat 2, and two support plates 3 are fixedly installed on the bottom of the placement seat 2. Two moving blocks 15 are installed on the sides of the two support plates 3 through a threaded drive mechanism, wherein the two moving blocks 15 are connected to the two smoothing rollers 43 through a connecting mechanism;

[0042] Two vertical plates 19 are provided above the moving block 15. The vertical sides of the two vertical plates 19 are provided with a plurality of evenly arranged side through holes 20. The bottom of the vertical plate 19 is fixedly installed on the top of the two adjacent moving blocks 15. The sides of the two vertical plates 19 that are close to each other are installed with telescopic plates 24 and triangular plates 25. The sides of the two telescopic plates 24 that are close to each other are fixedly installed with a horizontal plate 23. The two sides of the horizontal plate 23 are respectively fixedly connected to the sides of the two support plates 3 that are close to each other. A plurality of circular holes are provided on the top of the horizontal plate 23. Pipes 37 are fixedly installed in the plurality of circular holes. Exhaust fans 36 are fixedly installed in the plurality of pipes 37. The sides of the two vertical plates 19 that are away from each other are installed with a boosting mechanism.

[0043] With the above structure: the printed matter to be inspected is placed on the top of the placement seat 2, and the printed matter is located under the smoothing roller 43. The printed matter can be smoothed by the smoothing roller 43, and at the same time, the exhaust fan 36 forms a negative pressure under the printed matter, so that the smoothed printed matter will not be reset due to elasticity. At the same time, the boosting mechanism can stabilize the air pressure under the printed matter, so that the adsorption air pressure of different printed matters is stable.

[0044] The tops of the two triangular plates 25 contact the bottom of the placement seat 2, the sides of the two triangular plates 25 contact each other, the two vertical plates 19 and the two sides of the two triangular plates 25 contact each other, and the two sides of the telescopic plate 24 contact each other. The advantage of this arrangement is that a space is formed between the two vertical plates 19 and the two support plates 3, which facilitates the formation of a negative pressure space.

[0045] like Figure 2 As shown, the connecting mechanism includes a connecting rod 16 fixedly installed on the side of the two moving blocks 15, and the ends of the two connecting rods 16 away from the moving blocks 15 are fixedly installed with rectangular sleeves 13, and rectangular rods 42 are slidably installed in the two rectangular sleeves 13. The tops of the two rectangular rods 42 are fixedly installed with mounting frames, and two smoothing rollers 43 are rotatably installed in the two mounting frames. A blocking assembly is installed on one side of the placement seat 2, and the blocking assembly is connected to the two rectangular rods 42 and the sides of the two rectangular sleeves 13; starting the two horizontal telescopic bars 17 can make the U-shaped moving rod 10 move, and the movement of the U-shaped moving rod 10 drives the two moving sliders 11 to move, and then the two upper rotating rods 12 and the two lower rotating rods 14 rotate, so that the two rectangular rods 42 and the two mounting frames move downward, and the two mounting frames move downward, driving the two smoothing rollers 43 to move downward, thereby contacting the top of the printed matter, facilitating the smoothing of the printed matter in the later stage.

[0046] The side of the support plate 3 is provided with an escape hole, and the two connecting rods 16 respectively pass through the two escape holes. The setting of the escape holes is used to allow the connecting rods 16 to escape.

[0047] like Figure 4 and Figure 9 As shown, the blocking assembly includes a blocking groove opened on one side of the placement seat 2, the blocking groove is connected to a plurality of adsorption holes 18, a blocking plate 9 is slidably installed in the blocking groove, a plurality of evenly arranged air holes 41 are opened on the top of the blocking plate 9, and the plurality of air holes 41 are staggered with the plurality of adsorption holes 18, one side of the blocking plate 9 extends to the outside of the blocking groove and is fixedly installed with a U-shaped moving rod 10, both sides of the placement seat 2 are fixedly installed with horizontal telescopic bars 17, the output ends of the two horizontal telescopic bars 17 are fixedly connected to the two side parts of the U-shaped moving rod 10, and two moving sliders 11 are slidably sleeved on the U-shaped moving rod 10, and the sides of the two moving sliders 11 close to each other are rotatably installed with a lower rotating rod 14 and an upper rotating rod 12, the bottom ends of the two upper rotating rods 12 are respectively rotatably installed on the sides of the two rectangular sleeves 13, and the top ends of the two lower rotating rods 14 are respectively rotatably installed on the sides of the two rectangular rods 42. By setting the blocking assembly, the two horizontal telescopic bars 17 can move the two U-shaped moving rods 10, thereby moving the blocking plate 9. The air holes 41 on the blocking plate 9 do not correspond to the adsorption holes 18, thereby stopping the adsorption of the printed matter and facilitating the removal of the printed matter.

[0048] like Figure 5 As shown, the telescopic plate 24 includes multiple U-shaped plates and a connecting plate. The three sides of the horizontal plate 23 are provided with limiting grooves. The thickness of the multiple U-shaped plates decreases in sequence. Among the two adjacent U-shaped plates, the U-shaped plate with smaller thickness is slidably installed in the U-shaped plate with larger thickness, the U-shaped plate with the largest thickness is slidably installed in the limiting groove, and the connecting plate is slidably installed in the U-shaped plate with the smallest thickness. The side of the connecting plate away from the U-shaped plate is fixedly installed on the side of the vertical plate 19. The top and bottom inner walls of the limiting groove and the top and bottom inner walls of the U-shaped plate are all equipped with limiting sliders. The top and bottom of the U-shaped plate and the top and bottom of the connecting plate are all provided with anti-slip grooves. The limiting sliders are slidably installed in the anti-slip grooves to prevent them from falling off when sliding. By setting the telescopic plate 24, it is possible to seal after the two vertical plates 19 move.

[0049] like Figure 1 As shown, the screw drive mechanism includes four side plates 4, and the side of each side plate 4 is fixedly mounted on the side of the adjacent support plate 3, wherein the sides of two side plates 4 are fixedly mounted with servo motors 5;

[0050] The output shaft of the servo motor 5 passes through the side of the side plate 4 adjacent to it and is fixedly mounted with a forward and reverse threaded rod 6. The end of the forward and reverse threaded rod 6 away from the servo motor 5 is rotatably mounted on the side of the side plate 4 adjacent to it.

[0051] The two moving blocks 15 are provided with threaded holes on their sides close to each other. The internal threads in the two threaded holes are arranged oppositely, and the two oppositely arranged external threads on the positive and negative threaded rods 6 are respectively threadedly installed in the two threaded holes.

[0052] An L-shaped mounting rod 22 is fixedly mounted on the top of each of the four moving blocks 15 , and the bottom of the vertical plate 19 is fixedly mounted on the top of two adjacent L-shaped mounting rods 22 .

[0053] When in use, the output shafts of the two servo motors 5 rotate to drive the two forward and reverse threaded rods 6 to rotate, and the rotation of the two forward and reverse threaded rods 6 drives the four moving blocks 15 to move, among which the movement of the two moving blocks 15 drives the two connecting rods 16 to move, providing power for the movement of the two smoothing rollers 43.

[0054] like Figure 8 As shown, the pressurizing mechanism includes two vertical sealing plates 33, and the sides of the two vertical sealing plates 33 that are close to each other are in contact with the sides of the two vertical plates 19 that are away from each other. The bottoms of the two vertical sealing plates 33 are fixedly installed with L-shaped connecting rods 34, and the sides of the two L-shaped connecting rods 34 are fixedly installed with extrusion rods 35. The sides of the support plate 3 are installed with two extrusion frames 31 through adjustment components, and one end of the two extrusion rods 35 extends into the two extrusion frames 31 respectively. The sides of the two vertical sealing plates 33 that are away from each other are installed with two reset components; when the two vertical plates 19 move, the two vertical sealing plates 33 are driven to move During the process, the two vertical sealing plates 33 move, causing the two L-shaped connecting rods 34 to move. The movement of the two L-shaped connecting rods 34 drives the two extrusion rods 35 to move in the two extrusion frames 31 respectively. The inner walls of the two extrusion frames 31 squeeze the two extrusion rods 35, causing the two extrusion rods 35 to move downward, thereby causing the two L-shaped connecting rods 34 and the two vertical sealing plates 33 to move downward. The two reset components are deformed, and the two vertical sealing plates 33 move to slowly block the multiple side through holes 20, thereby ensuring that the number of air inlet holes located between the two vertical plates 19 and the two support plates 3 will not continue to increase, thereby ensuring its adsorption force.

[0055] like Figure 8 As shown, the reset assembly includes a limit block 38 fixedly mounted on the side of the vertical sealing plate 33, a limit hole is provided at the top of the limit block 38, a guide rod 21 is slidably mounted in the limit hole, a stop block 39 is fixedly mounted on the top of the guide rod 21, and the bottom end of the guide rod 21 is fixedly mounted on the top of the corresponding L-shaped mounting rod 22. A spring 40 is sleeved on the guide rod 21, and the two ends of the spring 40 are respectively fixedly mounted on the side where the stop block 39 and the limit block 38 are close to each other. Through the setting of the reset assembly, after the vertical sealing plate 33 moves downward, the spring 40 will deform, and under the action of the spring 40, the vertical sealing plate 33 will be restored to its original state.

[0056] like Figure 7 and Figure 8 As shown, the adjustment assembly includes a threaded adjustment rod 27, a fixed block 26 is threadedly sleeved on the threaded adjustment rod 27, and the side of the fixed block 26 is fixedly connected to the side of the support plate 3. A knob 32 is fixedly installed on the top of the threaded adjustment rod 27, and an extrusion block 29 is rotatably installed on the bottom end of the threaded adjustment rod 27. The side of the extrusion block 29 is slidably connected to the side of the support plate 3. Two circular holes are provided on the side of the support plate 3, and cylinders 30 are rotatably installed in the two circular holes. One end of the two cylinders 30 is fixedly connected to the side of the two extrusion frames 31 respectively, and the central axes of the two cylinders 30 coincide with the central axes of the two extrusion rods 35 in the initial state. The ends of the two cylinders 30 away from the extrusion frame 31 are fixedly installed with an eccentrically arranged compression rod 28, and a rectangular hole is provided on the side of the extrusion block 29, and the two compression rods 28 pass through the two rectangular holes respectively.

[0057] Turning the knob 32 causes the threaded adjustment rod 27 to rotate downward, thereby causing the extrusion block 29 to move downward. The rectangular hole on the extrusion block 29 squeezes the two pressure rods 28 to rotate the two cylinders 30. Figure 10 As shown, the two pressure rods 28 are eccentrically arranged. After being squeezed by the top inner wall of the rectangular hole, the two pressure rods 28 will move. The movement of the two pressure rods 28 drives the two cylinders 30 to rotate. The rotation of the two cylinders 30 drives the two extrusion frames 31 to rotate, thereby changing the inclination of the two extrusion frames 31. The greater the inclination of the extrusion frame 31, the faster the vertical sealing plate 33 descends, and it can be used for shorter printed materials.

[0058] The present application also discloses a method for detecting color difference of printed matter, which comprises the following steps:

[0059] Step 1: Place the printed matter to be inspected on the top of the placement seat 2, with the printed matter located below the smoothing roller 43. At this time, start the two horizontal telescopic bars 17 to move the U-shaped moving rod 10. The movement of the U-shaped moving rod 10 drives the two moving sliders 11 to move, thereby rotating the two upper rotating rods 12 and the two lower rotating rods 14, thereby causing the two rectangular rods 42 and the two mounting racks to move downward. The downward movement of the two mounting racks drives the two smoothing rollers 43 to move downward, thereby contacting the top of the printed matter. At the same time, the movement of the U-shaped moving rod 10 drives the blocking plate 9 to move, thereby causing the air vents 41 on the blocking plate 9 to correspond to the adsorption holes 18 on the placement seat 2.

[0060] Step 2, then start the two servo motors 5 and the two exhaust fans 36, the two exhaust fans 36 will extract the air between the two vertical plates 19 and the two support plates 3, thereby generating negative pressure, and the outside air can enter through the multiple side through-holes 20, the output shafts of the two servo motors 5 rotate to drive the two positive and negative threaded rods 6 to rotate, the two positive and negative threaded rods 6 rotate to drive the four moving blocks 15 to move, wherein the movement of the two moving blocks 15 drives the two connecting rods 16 to move, the movement of the two connecting rods 16 drives the two rectangular sleeves 13 to move, the movement of the two rectangular sleeves 13 drives the two rectangular rods 42 and the two mounting racks to move, the movement of the two mounting racks drives the two smoothing rollers 43 to move, thereby smoothing the printed matter, and at the same time, the movement of the four moving blocks 15 drives the four L-shaped mounting rods 22 to move respectively, the movement of the four L-shaped mounting rods 22 drives the two vertical plates 19 and the two triangular plates 25 to move, thereby separating the two triangular plates 25, allowing the adsorption holes 18 and the air vents 41 to leak out, thereby generating suction to adsorb the smoothed printed matter and make it flat;

[0061] Step 3. Adjust the angle of the extrusion frame 31 according to the length of the printed matter. If the printed matter is short, after it is placed on the placement seat 2, the adsorption hole 18 covered by the printed matter is smaller, so that after the two triangular plates 25 are opened, the adsorption holes 18 and the air holes 41 located between the two vertical plates 19 and the two support plates 3 are not covered, and the overall number of air inlet holes increases. Therefore, it is necessary to close the side through-holes 20 to ensure the adsorption force on the printed matter. First, turn the knob 32 to make the threaded adjustment rod 27 spiral downward, so that the extrusion block 29 moves downward, and the rectangular holes on the extrusion block 29 squeeze the two pressure rods 28 to rotate. The rotation of the two pressure rods 28 drives the two cylinders 30 to rotate, and the rotation of the two cylinders 30 drives the two extrusion rods The pressing frame 31 rotates, thereby changing the inclination of the two extrusion frames 31. In the process of the two vertical plates 19 moving and driving the two vertical sealing plates 33 to move, the two vertical sealing plates 33 move, causing the two L-shaped connecting rods 34 to move. The movement of the two L-shaped connecting rods 34 drives the two extrusion rods 35 to move respectively in the two extrusion frames 31. The inner walls of the two extrusion frames 31 squeeze the two extrusion rods 35, thereby causing the two extrusion rods 35 to move downward, thereby causing the two L-shaped connecting rods 34 and the two vertical sealing plates 33 to move downward, and the two reset assemblies to deform. The two vertical sealing plates 33 move to slowly block the multiple side through holes 20, thereby ensuring that the number of air inlet holes between the two vertical plates 19 and the two support plates 3 does not continue to increase;

[0062] Step 4. Finally, start the color difference detector 1 to perform color difference detection on the printed matter. After the detection is completed, start the two horizontal telescopic bars 17 to move the two U-shaped moving rods 10, thereby moving the blocking plate 9. The air vents 41 on the blocking plate 9 do not correspond to the adsorption holes 18, thereby stopping the adsorption of the printed matter. At the same time, the movement of the U-shaped moving rod 10 causes the lower rotating rod 14 to rotate, thereby causing the rectangular rod 42, the mounting frame and the smoothing roller 43 to move upward, and then the printed matter can be taken out.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other manner. Any person skilled in the art may utilize the above disclosed technical content to modify or modify the present invention into equivalent embodiments with equivalent variations. However, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the technical content of the present invention and are based on the technical essence of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. A printed matter color difference detection device, characterized in that: The utility model comprises a placement seat, two vertical telescopic rods are fixedly installed on the top of the placement seat, a T-shaped plate is fixedly installed on the output end of the two vertical telescopic rods, a color difference detector is fixedly installed on the side of the T-shaped plate away from the vertical telescopic rod, a plurality of evenly arranged adsorption holes are opened on the top of the placement seat, two smoothing rollers are arranged above the placement seat, two support plates are fixedly installed on the bottom of the placement seat, two moving blocks are installed on the sides of the two support plates through a threaded drive mechanism, and the two moving blocks are connected to the two smoothing rollers through a connecting mechanism; Two vertical plates are provided above the moving block, and the vertical side portions of the two vertical plates are provided with a plurality of evenly arranged side through holes, the bottom portions of the vertical plates are fixedly mounted on the tops of the two adjacent moving blocks, the sides of the two vertical plates close to each other are provided with telescopic plates and triangular plates, the sides of the two telescopic plates close to each other are fixedly mounted with a horizontal plate, the two sides of the horizontal plate are respectively fixedly connected to the sides of the two support plates close to each other, a plurality of circular holes are provided on the top of the horizontal plate, pipes are fixedly mounted in the plurality of circular holes, exhaust fans are fixedly mounted in the plurality of pipes, and a pressurizing mechanism is installed on the sides of the two vertical plates away from each other; The tops of the two triangular plates are in contact with the bottom of the placement seat, the sides of the two triangular plates are in contact with each other, the two vertical plates and the two sides of the two triangular plates are in contact with the sides of the two support plates, and the two sides of the telescopic plate are in contact with the sides of the two support plates. The connecting mechanism includes a connecting rod fixedly installed on the sides of the two moving blocks, a rectangular sleeve fixedly installed on the ends of the two connecting rods away from the moving blocks, a rectangular rod slidably installed in the two rectangular sleeves, a mounting bracket fixedly installed on the top of the two rectangular rods, the two smoothing rollers are rotatably installed in the two mounting brackets respectively, a blocking assembly is installed on one side of the placement seat, and the blocking assembly is connected to the two rectangular rods and the sides of the two rectangular sleeves; The cam is fixedly mounted on the top of the mounting plate, and the cam is fixedly mounted on the mounting plate, wherein the cam is fixedly mounted on the mounting plate, wherein the cam is fixedly mounted on the mounting plate, and the cam is fixedly mounted on the mounting plate.

2. The printed matter color difference detection device according to claim 1, characterized in that: The tops of the four moving blocks are fixedly mounted with L-shaped mounting rods, and the bottom of the vertical plate is fixedly mounted on the tops of two adjacent L-shaped mounting rods; the side of the support plate is provided with avoidance holes, and the two connecting rods respectively pass through the two avoidance holes; The telescopic plate includes a plurality of U-shaped plates and a connecting plate. A limiting groove is provided on the side of the horizontal plate. The thickness of the plurality of U-shaped plates decreases successively. Among the two adjacent U-shaped plates, the U-shaped plate with smaller thickness is slidably installed in the U-shaped plate with larger thickness, the U-shaped plate with the largest thickness is slidably installed in the limiting groove, and the connecting plate is slidably installed in the U-shaped plate with the smallest thickness. The connecting plate is fixedly installed on the side of the vertical plate away from the side of the U-shaped plate.

3. The printed matter color difference detection device according to claim 2, characterized in that: The screw drive mechanism includes four side plates, the side of each side plate is fixedly mounted on the side of the adjacent support plate, and the sides of two of the side plates are fixedly mounted with servo motors; The output shaft of the servo motor passes through the side of the side plate adjacent to it and is fixedly mounted with a forward and reverse threaded rod, and one end of the forward and reverse threaded rod away from the servo motor is rotatably mounted on the side of the side plate adjacent to it; The sides of the two moving blocks close to each other are both provided with threaded holes, the internal threads in the two threaded holes are arranged oppositely, and the two oppositely arranged external threads on the forward and reverse threaded rods are respectively threadedly installed in the two threaded holes.

4. The printed matter color difference detection device according to claim 3, characterized in that: The boosting mechanism includes two vertical sealing plates, the sides of the two vertical sealing plates close to each other are in contact with the sides of the two vertical plates away from each other, the bottoms of the two vertical sealing plates are fixedly installed with L-shaped connecting rods, the sides of the two L-shaped connecting rods are fixedly installed with extrusion rods, the sides of the support plate are installed with two extrusion frames through adjustment components, one end of the two extrusion rods extends into the two extrusion frames respectively, and the sides of the two vertical sealing plates away from each other are installed with two reset components; The reset assembly includes a limit block fixedly installed on the side of the vertical sealing plate, a limit hole is provided on the top of the limit block, a guide rod is slidably installed in the limit hole, a stop block is fixedly installed on the top of the guide rod, and the bottom end of the guide rod is fixedly installed on the top of the corresponding L-shaped mounting rod. A spring is sleeved on the guide rod, and both ends of the spring are respectively fixedly installed on the sides of the stop block and the limit block that are close to each other.

5. The printed matter color difference detection device according to claim 4, characterized in that: The adjusting assembly includes a threaded adjusting rod, a fixed block is threadedly sleeved on the threaded adjusting rod, the side of the fixed block is fixedly connected to the side of the support plate, the top of the threaded adjusting rod is fixedly installed with a knob, the bottom end of the threaded adjusting rod is rotatably installed with an extrusion block, the side of the extrusion block is slidably connected to the side of the support plate, two circular holes are provided on the side of the support plate, cylinders are rotatably installed in the two circular holes, one end of the two cylinders are respectively fixedly connected to the sides of the two extrusion frames, and the ends of the two cylinders away from the extrusion frames are fixedly installed with an eccentrically arranged compression rod, and a rectangular hole is provided on the side of the extrusion block, and the two compression rods respectively pass through the two rectangular holes.

6. A method for detecting color difference in printed matter, applied to the device for detecting color difference in printed matter according to claim 5, characterized in that: The following steps are involved: Step 1: Place the printed matter to be inspected on the top of the placement seat, with the printed matter located below the smoothing roller. At this time, start the two horizontal telescopic bars to move the U-shaped moving rod, which drives the two moving sliders to move, thereby rotating the two upper rotating rods and the two lower rotating rods, thereby causing the two rectangular rods and the two mounting racks to move downward. The downward movement of the two mounting racks drives the two smoothing rollers to move downward, thereby contacting the top of the printed matter. At the same time, the movement of the U-shaped moving rod drives the blocking plate to move, so that the air vents on the blocking plate correspond to the positions of the adsorption holes on the placement seat. Step 2. Then start the two servo motors and the two exhaust fans. The two exhaust fans will extract the air between the two vertical plates and the two support plates, thereby generating negative pressure. The outside air can enter through multiple side through-holes. The output shafts of the two servo motors rotate to drive the two positive and negative threaded rods to rotate. The rotation of the two positive and negative threaded rods drives the four moving blocks to move. The movement of the two moving blocks drives the movement of the two connecting rods. The movement of the two connecting rods drives the movement of the two rectangular sleeves. The movement of the two rectangular sleeves drives the movement of the two rectangular rods and the two mounting racks. The movement of the two mounting racks drives the movement of the two smoothing rollers, thereby smoothing the printed matter. At the same time, the movement of the four moving blocks drives the movement of the four L-shaped mounting rods respectively. The movement of the four L-shaped mounting rods drives the movement of the two vertical plates and the two triangular plates, thereby separating the two triangular plates, causing the adsorption holes and the air vents to leak out, thereby generating suction to adsorb the smoothed printed matter and make it flat. Step 3. Adjust the angle of the extrusion frame according to the length of the printed product. If the printed product is short, after it is placed on the placement seat, the adsorption holes covered by the printed product are smaller, so that after the two triangular plates are opened, the adsorption holes and air holes between the two vertical plates and the two support plates are not covered, and the overall number of air inlet holes increases. Therefore, it is necessary to close the side through-holes to ensure the adsorption force on the printed product. First, turn the knob to make the threaded adjustment rod spirally rotate downward, so that the extrusion block moves downward, and the rectangular holes on the extrusion block squeeze the two pressure rods to rotate. The rotation of the two pressure rods drives the two cylinders to rotate, and the rotation of the two cylinders drives the two The two extrusion frames rotate, thereby changing the inclination of the two extrusion frames. In the process of the movement of the two vertical plates driving the movement of the two vertical sealing plates, the movement of the two vertical sealing plates causes the two L-shaped connecting rods to move. The movement of the two L-shaped connecting rods drives the two extrusion rods to move respectively in the two extrusion frames. The inner walls of the two extrusion frames squeeze the two extrusion rods, thereby causing the two extrusion rods to move downward, thereby causing the two L-shaped connecting rods and the two vertical sealing plates to move downward, the two reset assemblies to deform, and the two vertical sealing plates to move to slowly block the multiple side through holes, thereby ensuring that the number of air inlet holes between the two vertical plates and the two support plates does not continue to increase; Step 4. Finally, start the color difference detector to perform color difference detection on the printed matter. After the detection is completed, start the two horizontal telescopic bars to move the two U-shaped moving rods, thereby moving the blocking plate. The air holes on the blocking plate do not correspond to the adsorption holes, thereby stopping the adsorption of the printed matter. At the same time, the movement of the U-shaped moving rod causes the lower rotating rod to rotate, thereby moving the rectangular rod, the mounting frame and the smoothing roller upward, and then the printed matter can be taken out.

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