Printing quality automatic detection device

Abstract

The invention belongs to the technical field of printing detection, and particularly relates to a printing quality automatic detection device which comprises a detection table, a conveying belt mechanism arranged on the detection table, a printing detection mechanism arranged on the detection table, a leading-out mechanism arranged on the detection table and a discharging mechanism arranged on the detection table. An optical detection module is fixedly installed on one surface of the fixing block. The printing detection mechanism is arranged, an electric sliding rail is started to enable the optical detection module to move up and down, the detection angle of the optical detection module can be adjusted by starting a motor, automatic focal length adjustment of the optical detection module is achieved, and the application range of the device is widened; the technical problems that a traditional printing quality detection device cannot automatically adjust the focal length of an optical detection module, quality detection cannot be conducted on thick leathers of different specifications on a conveying belt, and the application range is low are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of printing detection, in particular to an automatic printing quality detection device. Background Art

[0002] Printing is a technology that transfers ink from originals such as text, pictures, photos, anti-counterfeiting materials to the surface of paper, textiles, plastics, leather, PVC, PC and other materials through processes such as plate making, inking and pressurization, and replicates the contents of the originals in batches. Generally, it is necessary to print corresponding patterns and texts (trademarks, advertisements, product introductions, etc.) on thick cardboard first to make the product more attractive or more descriptive, thereby conveying information and increasing sales.

[0003] At present, the printed cardboard is transported on the conveyor belt. The traditional printing quality inspection device places the optical inspection module above the conveyor belt. The printed cardboard passes under the optical inspection module in turn, and the optical inspection module inspects it. However, due to the different shapes, thicknesses and other specifications of the cardboard, the traditional printing quality inspection device cannot automatically adjust the focal length of the optical inspection module, and thus cannot perform quality inspection on cardboards of different specifications on the conveyor belt, and has a low scope of application. At the same time, the cardboard that fails the printing quality inspection will be removed from the conveyor belt and piled up on the equipment. It needs to be manually collected piece by piece into the collection box, which is troublesome.

[0004] To this end, the present invention provides an automatic printing quality detection device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the printing quality automatic detection device described in the present invention comprises a detection platform, a conveyor belt mechanism is arranged on the detection platform, and the conveyor belt mechanism is used to transmit external printed thick cardboard; a printing detection mechanism is arranged on the detection platform, and the printing detection mechanism comprises an electric slide rail and a guide rail, the electric slide rail is vertically fixed on the detection platform, the guide rail is vertically fixed on the detection platform, an electric slide seat is slidably installed on the electric slide rail and drives the electric slide seat to reciprocate up and down, a lifting plate is fixedly connected to one side of the electric slide seat, and the end of the lifting plate away from the electric slide seat is slidably connected to the guide rail through a slider; a U-shaped bracket is fixedly connected to the bottom of the lifting plate, a motor is fixedly installed on the inner side of the U-shaped bracket, and the U-shaped A rotating rod is rotatably connected to the inner side of the bracket, one end of the rotating rod is fixedly connected to the output end of the motor, a fixed block is fixedly connected to the ring side of the rotating rod, and an optical detection module is fixedly installed on one surface of the fixed block; an export mechanism is arranged on the detection platform, the export mechanism includes a fixed plate, the fixed plate is vertically fixed on the detection platform, a telescope is fixedly installed on one side of the fixed plate, a support frame is fixedly connected to the end of the telescopic rod of the telescope, and a pushing block for pushing the external printed cardboard out of the conveyor mechanism is arranged on the side of the support frame away from the telescope; a feeding mechanism is arranged on the detection platform, the feeding mechanism includes a mounting frame, the mounting frame is vertically fixed on the detection platform, a top side of the mounting frame is provided with an export plate, and an export through slot is opened on the export plate.

[0007] Furthermore, a guide tube is fixedly connected to the lower surface of the guide plate, and the guide through groove is located directly above the opening of the upper end of the guide tube.

[0008] Furthermore, the unloading mechanism also includes a clamping member, and two clamping members are provided and respectively located on both sides of the lead-out plate.

[0009] Furthermore, the clamping member includes a connecting plate and a movable plate, one end of the connecting plate is fixedly connected to the export plate, a spring is arranged between the connecting plate and the movable plate, an arc plate 1 is arranged on a side of the connecting plate close to the movable plate, and an arc plate 2 is arranged on a side of the movable plate close to the connecting plate.

[0010] Furthermore, a telescopic rod 1 is provided between the connecting plate and the movable plate, and the telescopic rod 1 is located on the inner side of the spring.

[0011] Furthermore, two push rods are symmetrically arranged on a side of the support frame away from the telescopic device, and one end of the push rod away from the support frame is fixedly connected to a connecting frame, and a sphere that can be extended into between the first arc plate and the second arc plate is rotatably installed inside the connecting frame.

[0012] Furthermore, the unloading mechanism also includes a positioning plate, a plurality of springs are arranged between the lower surface of the positioning plate and the detection platform, the positioning plate is located directly below the lower end opening of the guide tube, and a pulling ring is arranged on one side of the positioning plate.

[0013] Furthermore, a limiting plate is provided on an inner wall of the lead-out through slot.

[0014] Furthermore, a clamping block is provided on a side of the movable plate away from the second arc-shaped plate, and the pushing block and the clamping block are both made of silicone material.

[0015] Furthermore, a second telescopic rod is provided between the fixing plate and the supporting frame, and the second telescopic rod is located directly above the telescope.

[0016] The beneficial effects of the present invention are as follows: 1. The automatic printing quality detection device described in the present invention, by setting a printing detection mechanism, starts the electric slide rail to move the optical detection module up and down, and can adjust the detection angle of the optical detection module by starting the motor, so as to realize automatic focal length adjustment of the optical detection module, thereby improving the application scope of the device of the present invention and solving the technical problem that the traditional printing quality detection device cannot automatically adjust the focal length of the optical detection module, and thus cannot perform quality detection on thick cardboard of different specifications on the conveyor belt, and has a low application scope.

[0017] 2. The automatic printing quality detection device described in the present invention detects thick cardboard that fails the printing quality detection through an optical detection module. When the thick cardboard that fails the printing quality detection is transmitted to between the telescopic device and the export plate by the conveyor belt mechanism, the telescopic rod of the telescopic device is driven to extend, so that the pushing block pushes the external printed thick cardboard to move to the upper surface of the export plate. When the external printed thick cardboard contacts the limit plate, the external printed thick cardboard is just located above the export slot, and the telescopic rod of the telescopic device is driven to reset, so that the external printed thick cardboard can automatically fall downward into the collection box through the export slot and the guide tube in turn. There is no need to manually put the thick cardboard that fails the printing quality detection into the collection box piece by piece, which solves the technical problem in the prior art that the thick cardboard that fails the printing quality detection will be removed from the conveyor belt and piled up on the equipment, resulting in troublesome manual collection.

[0018] 3. The automatic printing quality detection device described in the present invention, by setting an export mechanism and a feeding mechanism, when the thick cardboard that fails the printing quality inspection moves to just above the export slot, the two clamping blocks clamp the thick cardboard that fails the printing quality inspection on the left and right, which can prevent the telescopic rod of the telescope from extending too quickly, causing the thick cardboard that fails the printing quality inspection to deviate and not be just above the export slot. At the same time, the two clamping blocks can also keep the thick cardboard that fails the printing quality inspection in a stable horizontal state when it is just above the export slot.

[0019] 4. The automatic printing quality detection device described in the present invention has a plurality of springs 2 arranged between the lower surface of the positioning plate and the detection platform. When more and more thick cardboard sheets that fail the printing quality detection are in the collection box, the collection box will become heavier, thereby causing the collection box to move downward to compress spring 2. The staff can remove the collection box containing a certain amount of thick cardboard sheets that fail the printing quality detection and replace it with a new collection box based on the height of the collection box and the degree of compression of spring 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a printing quality automatic detection device from one viewing angle of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of another viewing angle of an automatic printing quality detection device of the present invention; Figure 3 yes Figure 2 A schematic diagram of the structure with a partial enlargement at the center; Figure 4 It is a three-dimensional structural diagram of a printing detection mechanism; Figure 5 yes Figure 4 A schematic diagram of the structure with a partial enlargement at B in the middle; Figure 6 It is a three-dimensional structural schematic diagram of the export mechanism; Figure 7 It is a three-dimensional structural schematic diagram of the blanking mechanism; Figure 8 yes Figure 7 A schematic diagram of the structure with a partial enlargement at C in the middle; Fig. 9 It is a one-view three-dimensional structural schematic diagram of the connection of the mounting frame, the export plate, the guide tube, and the limit plate; Fig.10 It is a schematic diagram of a three-dimensional structure in which a mounting frame, a guide plate, a guide tube and a limit plate are connected from another perspective; In the figure: 1. Testing table; 2. Conveyor belt mechanism; 3. Printing detection mechanism; 31. Electric slide rail; 32. Guide rail; 33. Electric slide seat; 34. Lifting plate; 35. U-shaped bracket; 36. Motor; 37. Rotating rod; 38. Fixed block; 39. Optical detection module; 4. Export mechanism; 41. Fixed plate; 42. Telescopic device; 43. Support frame; 44. Push block; 45. Push rod; 46. Connecting frame; 47. Ball; 48. Telescopic rod II.

[0022] 5. Feeding mechanism; 51. Mounting frame; 52. Lead-out plate; 53. Lead-out slot; 54. Guide tube; 55. Clamping piece; 56. Positioning plate; 57. Second spring; 58. Pulling ring; 59. Limiting plate; 551. Connecting plate; 552. Movable plate; 553. First spring; 554. First arc plate; 555. Second arc plate; 556. First telescopic rod; 6. Collection box. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] Embodiment 1 like Figures 1 to 10 As shown, an automatic printing quality detection device according to an embodiment of the present invention comprises a detection platform 1, on which a conveyor belt mechanism 2 is arranged, and the external printed cardboard can be transported by starting the conveyor belt mechanism 2.

[0025] The inspection platform 1 is provided with a printing inspection mechanism 3, which includes an electric slide rail 31, a guide rail 32, an electric slide seat 33, a lifting plate 34, a U-shaped bracket 35, a motor 36, a rotating rod 37, a fixed block 38, and an optical inspection module 39. The electric slide rail 31 is vertically arranged, and the bottom of the electric slide rail 31 is fixed on the inspection platform 1. The guide rail 32 is vertically arranged, and the bottom of the guide rail 32 is fixed on the inspection platform 1. The electric slide seat 33 is slidably mounted on the electric slide rail 31, and the electric slide seat 33 can be driven to reciprocate up and down on the electric slide rail 31 by starting the electric slide rail 31. A lifting plate 34 is fixedly connected to one side of the electric slide seat 33, and the end of the lifting plate 34 away from the electric slide seat 33 is slidably connected to the guide rail 32 through a slider, and the lifting plate 34 moves reciprocally up and down with the electric slide seat 33.

[0026] A U-shaped bracket 35 is fixedly connected to the bottom of the lifting plate 34, a motor 36 is fixedly installed inside the U-shaped bracket 35, a rotating rod 37 is horizontally arranged, one end of the rotating rod 37 is rotatably connected to the inner side of the U-shaped bracket 35, and the other end of the rotating rod 37 is fixedly connected to the output end of the motor 36. A fixing block 38 is fixedly connected to the ring side of the rotating rod 37, and an optical detection module 39 is fixedly installed on one surface of the fixing block 38. By starting the motor 36, the optical ray emission angle of the optical detection module 39 can be adjusted, thereby adjusting the detection angle.

[0027] Specifically, since the traditional printing quality inspection device places the optical inspection module above the conveyor belt, the thick cardboard after printing passes under the optical inspection module in turn, and the optical inspection module inspects it. However, due to the different shapes, thicknesses and other specifications of the thick cardboard, the traditional printing quality inspection device cannot automatically adjust the focal length of the optical inspection module, and thus cannot perform quality inspection on thick cardboard of different specifications on the conveyor belt, and has a low scope of application.

[0028] Therefore, the present invention adjusts the focal length of the optical detection module 39 by setting a printing detection mechanism 3, moves the optical detection module 39 up and down by starting the electric slide rail 31, and adjusts the detection angle of the optical detection module 39 by starting the motor 36, thereby realizing automatic focal length adjustment of the optical detection module 39, thereby improving the application scope of the device of the present invention, and solving the technical problem that the traditional printing quality detection device cannot automatically adjust the focal length of the optical detection module, and thus cannot perform quality inspection on thick cardboard of different specifications on the conveyor belt, and has a low scope of application.

[0029] Specifically, the test bench 1 is provided with a derivation mechanism 4, which includes a fixed plate 41, a telescopic device 42, a support frame 43, and a push block 44. The fixed plate 41 is vertically arranged, and the bottom of the fixed plate 41 is fixed on the test bench 1. The telescopic device 42 is fixedly installed on one side of the fixed plate 41. The telescopic device 42 is preferably an electric telescopic rod or a hydraulic telescopic rod, and the telescopic rod of the telescopic device 42 is arranged horizontally. The end of the telescopic rod of the telescopic device 42 is fixedly connected to the support frame 43, and a push block 44 is arranged on the side of the support frame 43 away from the telescopic device 42. The push block 44 is made of silicone. By driving the telescopic rod of the telescopic device 42 to extend, the push block 44 contacts the external printed cardboard and can push it out of the conveyor belt mechanism 2.

[0030] The testing platform 1 is provided with a material unloading mechanism 5, which includes a mounting frame 51, an export plate 52, an export slot 53, a guide tube 54, and a limit plate 59. The mounting frame 51 is vertically fixed on the testing platform 1, and the export plate 52 is horizontally arranged. The export plate 52 is fixedly connected to the top of the mounting frame 51, and the mounting frame 51 and the export plate 52 are integrally formed. The upper surface of the export plate 52 is coplanar with the upper surface of the conveyor belt on the conveyor belt mechanism 2 for conveying external printed thick cardboard. The export plate 52 is provided with an export slot 53, and the collection box 6 is placed directly below the export plate 52, and the export slot 53 is located directly above the top box opening of the collection box 6.

[0031] Specifically, both upper and lower ends of the guide tube 54 are open, the top of the guide tube 54 is fixedly connected to the lower surface of the guide plate 52, the guide slot 53 is located just above the upper opening of the guide tube 54, and the guide tube 54 can be inserted into the collection box 6, and the external printed cardboard can automatically fall downward into the collection box 6 through the guide slot 53 and the guide tube 54 in sequence. When the external printed cardboard passes through the guide tube 54, the guide tube 54 limits the external printed cardboard, so that the external printed cardboard falls downward into the collection box 6 in a stable horizontal state in the guide tube 54.

[0032] Specifically, a limit plate 59 is disposed on an inner wall of the lead-out slot 53 . The limit plate 59 is integrally formed with the lead-out plate 52 , so that the external printed cardboard is located just above the lead-out slot 53 .

[0033] Specifically, since thick cardboard that fails the printing quality inspection will be removed from the conveyor belt and piled up on the equipment, it needs to be manually collected piece by piece into a collection box, which is rather troublesome.

[0034] Therefore, the present invention detects the thick cardboard that fails the printing quality inspection through the optical inspection module 39. When the thick cardboard that fails the printing quality inspection is conveyed to between the telescopic device 42 and the export plate 52 by the conveyor belt mechanism 2, the telescopic rod of the telescopic device 42 is driven to extend, so that the pushing block 44 pushes the external printed thick cardboard to move to the upper surface of the export plate 52. When the external printed thick cardboard contacts the limit plate 59, the external printed thick cardboard is just located above the export slot 53, and the telescopic rod of the telescopic device 42 is driven to reset, so that the external printed thick cardboard can automatically fall downward into the collection box 6 through the export slot 53 and the guide tube 54 in turn. There is no need to manually put the thick cardboard that fails the printing quality inspection into the collection box piece by piece, which solves the technical problem in the prior art that the thick cardboard that fails the printing quality inspection will be removed from the conveyor belt and accumulated on the equipment, resulting in troublesome manual collection.

[0035] Embodiment 2 like Figures 1 to 10 As shown, compared with the first embodiment, the present embodiment is different from the first embodiment in that the unloading mechanism 5 further includes a clamping member 55, a positioning plate 56, a second spring 57, and a pulling ring 58. Two clamping members 55 are provided, and the two clamping members 55 are respectively located on both sides of the lead-out plate 52 and are symmetrically arranged. The clamping member 55 includes a connecting plate 551, a movable plate 552, a spring 1 553, an arc plate 1 554, an arc plate 2 555, and a telescopic rod 1 556.

[0036] Specifically, the connecting plate 551 is a shaped structure, and one end of the connecting plate 551 is fixedly connected to the export plate 52. A spring 553 is arranged between the connecting plate 551 and the movable plate 552, and the spring 553 is arranged horizontally. One end of the spring 553 is connected to the connecting plate 551, and the other end of the spring 553 is connected to the movable plate 552. When the movable plate 552 moves in a direction away from the connecting plate 551, the spring 553 will be stretched.

[0037] Specifically, a curved plate 1 554 is disposed on one side of the connecting plate 551 close to the movable plate 552 , and a curved plate 2 555 is disposed on one side of the movable plate 552 close to the connecting plate 551 . The arc convex surface of the arc plate 1 554 is disposed opposite to the arc convex surface of the arc plate 2 555 .

[0038] Specifically, a telescopic rod 556 is provided between the connecting plate 551 and the movable plate 552. The telescopic rod 556 is located on the inner side of the spring 553. The telescopic rod 556 is horizontally arranged. One end of the telescopic rod 556 is fixedly connected to the connecting plate 551, and the other end of the telescopic rod 556 is fixedly connected to the movable plate 552. The function of the telescopic rod 556 is to make the movable plate 552 more stable when it moves horizontally.

[0039] Specifically, the lead-out mechanism 4 further includes a push rod 45, a connecting frame 46, and a ball 47. Two push rods 45 are symmetrically arranged on a side of the support frame 43 away from the telescopic device 42, and one end of the push rod 45 away from the support frame 43 is fixedly connected to the connecting frame 46, and a ball 47 is rotatably mounted inside the connecting frame 46. The ball 47 can extend between the arc plate 1 554 and the arc plate 2 555, so that the arc plate 2 555 moves in a direction away from the arc plate 1 554, thereby stretching the spring 1 553.

[0040] Specifically, a plurality of springs 57 are arranged between the lower surface of the positioning plate 56 and the detection platform 1. The springs 57 are arranged vertically, and the upper ends of the springs 57 are fixedly connected to the lower surface of the positioning plate 56, and the lower ends of the springs 57 are fixedly connected to the detection platform 1. A pulling ring 58 is arranged on one side of the positioning plate 56, and the pulling ring 58 is pulled downward by hand to facilitate the positioning plate 56 to move downward and compress the springs 57.

[0041] Specifically, the positioning plate 56 is located directly below the lower opening of the guide tube 54. The positioning plate 56 can be moved downward first until the collection box 6 can be placed between the lower surface of the positioning plate 56 and the lower end of the guide tube 54, and then the positioning plate 56 is stopped and the collection box 6 is placed on the upper surface of the positioning plate 56. The positioning plate 56 is then released, and the tension of the spring 57 causes the positioning plate 56 to reset, thereby moving the collection box 6 upward, and then inserting the guide tube 54 into the collection box 6.

[0042] Specifically, a clamping block 557 is provided on one side of the movable plate 552 away from the arc plate 2 555, and the clamping block 557 is made of silicone material. When the ball 47 just extends between the arc plate 1 554 and the arc plate 2 555, the arc plate 2 555 moves in a direction away from the arc plate 1 554, stretching the spring 1 553. At this time, the clamping blocks 557 on the clamping members 55 on both sides of the output plate 52 clamp the external printed thick paperboard. Since the two clamping blocks 557 are arranged in parallel and symmetrically, when the two clamping blocks 557 clamp the external printed thick paperboard, the external printed thick paperboard can be kept in a stable horizontal state.

[0043] Specifically, a telescopic rod 48 is provided between the fixed plate 41 and the support frame 43. The telescopic rod 48 is horizontally arranged, one end of the telescopic rod 48 is fixedly connected to the fixed plate 41, and the other end of the telescopic rod 48 is fixedly connected to the support frame 43. The telescopic rod 48 is located directly above the telescope 42. The function of the telescopic rod 48 makes the support frame 43 more stable when it moves horizontally.

[0044] The rest of the structure is the same as that of the first embodiment.

[0045] The working principle and use process of the embodiment of the present invention are as follows: first, the collection box 6 is placed on the upper surface of the positioning plate 56, and the guide tube 54 is inserted into the collection box 6; the thick cardboard that fails the printing quality inspection is detected by the optical detection module 39, and when the thick cardboard that fails the printing quality inspection is transmitted to between the telescopic device 42 and the export plate 52 by the conveyor belt mechanism 2, the telescopic rod of the telescopic device 42 is driven to extend, so that the pushing block 44 pushes the thick cardboard that fails the printing quality inspection to move to the upper surface of the export plate 52, and then the thick cardboard that fails the printing quality inspection is just above the export slot 53; when the thick cardboard that fails the printing quality inspection moves to the top of the export slot 53, the ball 47 will extend between the arc plate 1 554 and the arc plate 2 555, so that the two clamping blocks 557 clamp the thick cardboard that fails the printing quality inspection to the left and right, and the two clamping blocks 557 limit the thick cardboard that fails the printing quality inspection during the movement, which can The telescopic rod of the telescope 42 can be prevented from extending too quickly, so that the thick cardboard that fails the printing quality inspection will deviate and cannot be located exactly above the outlet slot 53. At the same time, the two clamping blocks 557 can also make the thick cardboard that fails the printing quality inspection in a stable horizontal state when it is just above the outlet slot 53; then the telescopic rod of the telescope 42 is driven to reset, the ball 47 is moved out from between the arc plate 1 554 and the arc plate 2 555, and the two clamping blocks 557 are reset. The thick cardboard that fails the printing quality inspection can automatically fall downward into the collection box 6 through the outlet slot 53 and the guide tube 54 in turn; when there are more and more thick cardboards that fail the printing quality inspection in the collection box 6, the collection box 6 will become heavier, thereby causing the collection box 6 to move downward to compress the spring 2 57. The staff can remove the collection box 6 containing a certain amount of thick cardboards that fail the printing quality inspection and replace it with a new collection box 6 based on the height of the collection box 6 and the compression degree of the spring 2 57.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic printing quality detection device, comprising a detection table (1), characterized in that: The inspection table (1) is provided with a conveyor belt mechanism (2), and the conveyor belt mechanism (2) is used to transport external printed cardboard; The inspection table (1) is provided with a printing inspection mechanism (3), the printing inspection mechanism (3) comprising an electric slide rail (31) and a guide rail (32), the electric slide rail (31) being vertically fixed on the inspection table (1), the guide rail (32) being vertically fixed on the inspection table (1), an electric slide seat (33) being slidably mounted on the electric slide rail (31) and driving the electric slide seat (33) to move up and down reciprocatingly, a lifting plate (34) being fixedly connected to one side of the electric slide seat (33), and an end of the lifting plate (34) away from the electric slide seat (33) being slidably connected to the guide rail (32) via a slider; The bottom of the lifting plate (34) is fixedly connected to a U-shaped bracket (35), a motor (36) is fixedly installed inside the U-shaped bracket (35), a rotating rod (37) is rotatably connected inside the U-shaped bracket (35), one end of the rotating rod (37) is fixedly connected to the output end of the motor (36), a fixed block (38) is fixedly connected to the ring side of the rotating rod (37), and an optical detection module (39) is fixedly installed on one surface of the fixed block (38); The inspection platform (1) is provided with a guide mechanism (4), the guide mechanism (4) comprising a fixed plate (41), the fixed plate (41) being vertically fixed on the inspection platform (1), a telescoping device (42) being fixedly mounted on one side of the fixed plate (41), a support frame (43) being fixedly connected to the end of the telescopic rod of the telescoping device (42), and a pushing block (44) for pushing the external printed cardboard out of the conveyor mechanism (2) being provided on one side of the support frame (43) away from the telescoping device (42); The testing platform (1) is provided with a material discharge mechanism (5), the material discharge mechanism (5) comprising a mounting frame (51), the mounting frame (51) being vertically fixed on the testing platform (1), a lead-out plate (52) being provided on one side of the top of the mounting frame (51), and a lead-out through slot (53) being provided on the lead-out plate (52).

2. The automatic printing quality detection device according to claim 1, characterized in that: The lower surface of the guide plate (52) is fixedly connected to a guide tube (54), and the guide slot (53) is located directly above the upper opening of the guide tube (54).

3. The automatic printing quality detection device according to claim 2, characterized in that: The unloading mechanism (5) further comprises a clamping member (55), wherein two clamping members (55) are provided and are respectively located on two sides of the lead-out plate (52).

4. The automatic printing quality detection device according to claim 3 is characterized in that: The clamping member (55) comprises a connecting plate (551) and a movable plate (552); one end of the connecting plate (551) is fixedly connected to the export plate (52); a spring 1 (553) is arranged between the connecting plate (551) and the movable plate (552); a curved plate 1 (554) is arranged on a side of the connecting plate (551) close to the movable plate (552); and a curved plate 2 (555) is arranged on a side of the movable plate (552) close to the connecting plate (551).

5. The automatic printing quality detection device according to claim 4, characterized in that: A telescopic rod 1 (556) is provided between the connecting plate (551) and the movable plate (552), and the telescopic rod 1 (556) is located inside the spring 1 (553).

6. The automatic printing quality detection device according to claim 4, characterized in that: Two push rods (45) are symmetrically arranged on a side surface of the support frame (43) away from the telescopic device (42); one end of the push rod (45) away from the support frame (43) is fixedly connected to a connecting frame (46); a spherical body (47) that can be extended between the first arc plate (554) and the second arc plate (555) is rotatably mounted inside the connecting frame (46).

7. The automatic printing quality detection device according to claim 6, characterized in that: The unloading mechanism (5) further comprises a positioning plate (56), a plurality of springs (57) being arranged between the lower surface of the positioning plate (56) and the detection platform (1), the positioning plate (56) being located directly below the lower end opening of the guide tube (54), and a pulling ring (58) being arranged on one side of the positioning plate (56).

8. The automatic printing quality detection device according to claim 1, characterized in that: A limiting plate (59) is provided on an inner wall of the outlet through groove (53).

9. The automatic printing quality detection device according to claim 4, characterized in that: A clamping block (557) is provided on a side of the movable plate (552) away from the second arc-shaped plate (555), and the pushing block (44) and the clamping block (557) are both made of silicone material.

10. The automatic printing quality detection device according to claim 1, characterized in that: A second telescopic rod (48) is provided between the fixing plate (41) and the supporting frame (43), and the second telescopic rod (48) is located directly above the telescopic device (42).

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