Packaging printed matter printing quality detection equipment

Abstract

The invention relates to the technical field of packaging presswork, in particular to packaging presswork printing quality detection equipment which comprises a camera, a PLC, a machine base, a waste collecting box and two conveying belts, the machine base is provided with an installation opening with a T-shaped cross section, and the installation opening is formed between the two conveying belts; a rotating assembly is arranged in the mounting opening, the rotating assembly is used for removing unqualified packaging printed matters, the rotating assembly comprises a rotating shaft rotationally arranged in the mounting opening, and the inner wall of one side of the mounting opening is fixedly connected with a servo motor used for driving the rotating shaft; and a plurality of overturning blocks are fixedly connected to the rotating shaft. According to the device, unqualified packaging presswork can be conveniently removed, the rotating speed of the overturning block is high, in the rotating process of the overturning block, transportation of other packaging presswork on the conveying belt cannot be hindered, and printing quality detection of the packaging presswork is facilitated.

Description

Technical Field

[0001] This invention relates to the field of packaging and printing technology, and in particular to a packaging and printing quality testing device. Background Technology

[0002] Printed materials are produced using printing technology, including packaging printed materials. During the production process, packaging printed materials need to be inspected using printing quality inspection equipment.

[0003] For example, the patent document with publication number "CN211865854U" discloses a quality inspection device for printed crafts, including a base, a support frame on one side of the upper surface of the base, a rotating roller rotatably connected inside the support frame, a conveyor belt sleeved on the outer surface of the three rotating rollers, and one end of the rotating rollers connected to the output shaft of a servo motor through a coupling.

[0004] Although the device in the aforementioned patent document solves the problems of manual inspection being the primary method for quality inspection of printed products, which is time-consuming, labor-intensive, and inefficient, the following issues still exist: Since printed packaging is transported on a conveyor belt, when the thickness of the printed packaging is small, the electric telescopic rod is inconvenient to remove defective printed packaging. Furthermore, when printed packaging is not transported at equal intervals on the conveyor belt, the electric telescopic rod's extension and retraction can easily obstruct the transmission of some printed packaging on the conveyor belt, which is detrimental to the inspection of the printing quality of the printed packaging. Summary of the Invention

[0005] The purpose of this invention is to address the following drawbacks in the prior art: when printed packaging materials are transported on a conveyor belt, and the thickness of the printed packaging materials is small, it is inconvenient for the electric telescopic rod to remove defective printed packaging materials. Furthermore, when the printed packaging materials are not transported at equal intervals on the conveyor belt, the electric telescopic rod may obstruct the transmission of some printed packaging materials on the conveyor belt during its extension and retraction, which is not conducive to the inspection of the printing quality of the printed packaging materials. Therefore, this invention proposes a printing quality inspection device for printed packaging materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A packaging printing quality inspection device includes a camera, a PLC controller, a base, a waste collection bin, and two conveyor belts. The base has a T-shaped mounting opening, which is located between the two conveyor belts.

[0008] A rotating assembly is provided inside the mounting port. The rotating assembly is used to reject unqualified packaging printed materials. The rotating assembly includes a rotating shaft that is rotatably disposed inside the mounting port. A servo motor for driving the rotating shaft is fixedly connected to the inner wall of one side of the mounting port. Multiple flipping blocks are fixedly connected to the rotating shaft.

[0009] Each of the flipping blocks is provided with a support assembly for supporting the printed packaging. The support assembly includes a rotating rod rotatably mounted on the flipping block, two irregularly arranged support plates fixedly connected to the rotating rod, a first rotating plate fixedly connected to the rotating rod, and a slider that cooperates with the first rotating plate slidably connected inside the flipping block.

[0010] As a preferred embodiment, each of the flipping blocks has a first mounting cavity with a right-angled trapezoidal cross-section. The inclined inner wall of the first mounting cavity has a limiting groove for connecting the slider. A torsion spring is sleeved on the rotating rod. One end of the torsion spring is fixedly connected to the rotating rod, and the other end of the torsion spring is fixedly connected to the inner wall of the first mounting cavity.

[0011] As a preferred embodiment, each of the flipping blocks is provided with a second mounting cavity, and a fixed shaft is rotatably connected in the second mounting cavity. Multiple pulleys are fixedly connected to the fixed shaft, and each pulley is rotatably connected to the flipping block. Multiple grooves are provided on the side surface of one of the pulleys.

[0012] As a preferred embodiment, each of the rotating rods is fixedly connected to a second rotating plate, and the inner wall of one side of the first mounting cavity is provided with an opening communicating with the second mounting cavity. A plurality of rubber clips are fixedly connected to one side surface of the second rotating plate, and each rubber clip engages with a corresponding groove.

[0013] As a preferred embodiment, a rectangular block is fixedly connected to one end of each fixed shaft that passes through the second mounting cavity, and a fixed rod is fixedly connected to the base, with a rectangular opening at one end of the fixed rod for connecting the rectangular block.

[0014] As a preferred embodiment, a mounting plate is fixedly connected to the lower surface of the base, a bending rod is slidably connected to the mounting plate, a pressing plate is fixedly connected to one end of the bending rod, and a cam that cooperates with the pressing plate is fixedly connected to the fixing rod.

[0015] As a preferred embodiment, the base has two symmetrically arranged sliding openings, each of which is slidably connected to a mounting block. A hinge rod is hinged to the mounting block, and the hinge rod is hinged to the bending rod.

[0016] As a preferred embodiment, a first spring is fitted onto the bending rod, one end of the first spring is fixedly connected to the bending rod, and the other end of the first spring is fixedly connected to the mounting plate.

[0017] As a preferred embodiment, each of the mounting blocks is threadedly connected to a push block, and the cross-section of each push block is T-shaped.

[0018] As a preferred embodiment, the cross-section of the limiting groove is cross-shaped, and the slider and the limiting groove are slidably connected.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. As a flipping block rotates upwards, it can rotate the defective packaging printed materials on its surface together, thereby removing the defective packaging printed materials. When the flipping block rotates to a vertical position, the adjacent flipping block can rotate into the installation opening to facilitate the smooth passage or removal of the next packaging printed material. It is convenient to remove defective packaging printed materials. In addition, the flipping block rotates at a relatively fast speed. During the rotation of the flipping block, it will not obstruct the transportation of other packaging printed materials on the conveyor belt, which is beneficial to the inspection of the printing quality of packaging printed materials.

[0021] 2. After the two support plates extend outward from the flipping block, they can increase the contact area with the bottom surface of the printed packaging, preventing the printed packaging from slipping off the sides of the flipping block. By preventing the pulleys and fixed shafts from rotating, the printed packaging can be prevented from slipping onto another conveyor belt as the pulleys rotate during the subsequent rotation of the flipping block. This facilitates the smooth removal of unqualified printed packaging from the conveyor belt and effectively prevents unqualified printed packaging from falling onto the surface of the machine base.

[0022] 3. During the rotation of the cam, the extrusion plate is squeezed multiple times. Under the transmission action of the extrusion plate, the two push blocks move together. As the two push blocks approach each other, the qualified packaging printed materials on the conveyor belt can be straightened, so as to facilitate the subsequent processing or collection of qualified packaging printed materials. There is no need for manual straightening of the packaging printed materials, making the operation more convenient. Attached Figure Description

[0023] Figure 1 This is a front structural diagram of the packaging printing quality inspection equipment proposed in this invention.

[0024] Figure 2 This is a side view of the packaging printing quality inspection equipment proposed in this invention.

[0025] Figure 3This is a schematic diagram of the back structure of the packaging printing quality inspection equipment proposed in this invention.

[0026] Figure 4 This is a top view schematic diagram of the packaging printing quality inspection equipment proposed in this invention.

[0027] Figure 5 This is a partial top view of the packaging printing quality inspection equipment proposed in this invention.

[0028] Figure 6 This is a schematic diagram of the front structure of the flipping block and servo motor in this invention;

[0029] Figure 7 This is a partial top view of the flipping block and cam in this invention;

[0030] Figure 8 This is a side cross-sectional view of one side of the flipping block in this invention;

[0031] Figure 9 This is a partial side cross-sectional view of one side of the flipping block in this invention;

[0032] Figure 10 This is a partial cross-sectional view of the other side of the flipping block in this invention.

[0033] Figure 11 This is a partial top-view cross-sectional structural diagram of the flipping block in this invention.

[0034] In the diagram: 1. Base, 2. Conveyor belt, 3. Pulley, 4. Servo motor, 5. Flip block, 6. Rectangular block, 7. Rotating shaft, 8. Hinge rod, 9. Bending rod, 10. Mounting plate, 11. Mounting block, 12. Pushing block, 13. Support plate, 14. Rotating rod, 15. Camera, 16. Cam, 17. Extrusion plate, 18. Fixing rod, 19. First spring, 20. Fixing shaft, 21. Rectangular opening, 22. Rubber clip, 23. Second rotating plate, 24. Second mounting cavity, 25. Slider, 26. First mounting cavity, 27. Torsion spring, 28. First rotating plate, 29. Limiting groove, 30. Groove, 31. Mounting port. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Reference Figures 1-11A packaging printing quality inspection device includes a camera 15, a PLC controller, a base 1, a waste collection bin, and two conveyor belts 2 (the PLC controller is existing technology, and its working principle is not described in detail). The camera 15 can capture images of the packaging printing products and then feed the image information back to the PLC controller. The PLC controller processes and analyzes the image data and can quickly determine whether the packaging printing products are qualified by comparing the parameters of the packaging printing products. The base 1 has a T-shaped mounting port 31, which is located between the two conveyor belts 2. A rotating component is installed in the mounting port 31 to remove unqualified packaging printing products. The rotating component includes a rotating shaft 7 that is rotatably installed in the mounting port 31. A servo motor 4 for driving the rotating shaft 7 is fixedly connected to the inner wall of one side of the mounting port 31. Multiple flipping blocks 5 are fixedly connected to the rotating shaft 7.

[0037] Each flipping block 5 is provided with a support assembly for supporting the printed packaging. The support assembly includes a rotating rod 14 rotatably mounted on the flipping block 5, two irregularly arranged support plates 13 fixedly connected to the rotating rod 14, a first rotating plate 28 fixedly connected to the rotating rod 14, and a slider 25 that cooperates with the first rotating plate 28 slidably connected inside the flipping block 5.

[0038] Each flipping block 5 has a first mounting cavity 26 with a right-angled trapezoidal cross-section. The inclined inner wall of the first mounting cavity 26 has a limiting groove 29 for connecting the slider 25. A torsion spring 27 is sleeved on the rotating rod 14. One end of the torsion spring 27 is fixedly connected to the rotating rod 14, and the other end of the torsion spring 27 is fixedly connected to the inner wall of the first mounting cavity 26. When the flipping block 5 rotates upward at a certain angle, the slider 25 will slide along the limiting groove 29 under the action of gravity. The slider 25 has a large mass. During the sliding process of the slider 25 in the limiting groove 29, it will squeeze the first rotating plate 28. Under the transmission action of the first rotating plate 28, the rotating rod 14 and the flipping block 5 rotate relative to each other, and the torsion spring 27 deforms.

[0039] Each rotating rod 14 is fixedly connected to a second rotating plate 23. The inner wall of one side of the first mounting cavity 26 has an opening that communicates with the second mounting cavity 24. A plurality of rubber clips 22 are fixedly connected to one side surface of the second rotating plate 23. Each rubber clip 22 engages with a corresponding groove 30. Each flipping block 5 has a second mounting cavity 24. A fixed shaft 20 is rotatably connected inside the second mounting cavity 24. A plurality of pulleys 3 are fixedly connected to the fixed shaft 20. Each pulley 3 is rotatably connected to the flipping block 5. A plurality of grooves 30 are opened on the side surface of one of the pulleys 3. As the second rotating plate 23 rotates together with the rotating rod 14, each of the rubber clips 22 on its surface will engage with the corresponding groove 30 on one of the pulleys 3, thereby preventing the pulleys 3 and the fixed shaft 20 from rotating.

[0040] Each fixed shaft 20 has a rectangular block 6 fixedly connected to one end of the second mounting cavity 24. A fixed rod 18 is fixedly connected to the base 1. One end of the fixed rod 18 has a rectangular opening 21 for connecting the rectangular block 6. A mounting plate 10 is fixedly connected to the lower surface of the base 1. A bent rod 9 is slidably connected to the mounting plate 10. One end of the bent rod 9 is fixedly connected to a pressing plate 17. A cam 16 that cooperates with the pressing plate 17 is fixedly connected to the fixed rod 18. When the rectangular block 6 at one end of the fixed shaft 20 is located inside the rectangular opening 21, during the rotation of the fixed shaft 20, under the transmission action of the rectangular block 6, the fixed rod 18 will rotate together with the fixed shaft 20 and drive the cam 16 to rotate.

[0041] The base 1 has two symmetrically arranged sliding openings, each with a mounting block 11 slidably connected to it. A hinge rod 8 is hinged to the mounting block 11, and the hinge rod 8 is hinged to a bending rod 9. A first spring 19 is sleeved on the bending rod 9, with one end fixedly connected to the bending rod 9 and the other end fixedly connected to the mounting plate 10. Each mounting block 11 is threadedly connected to a push block 12, and each push block 12 has a T-shaped cross-section. During the rotation of the cam 16, the extrusion plate 17 is repeatedly extruded. Under the transmission action of 7, the bending rod 9 and the mounting plate 10 slide relative to each other, the first spring 19 deforms, and under the transmission action of the two hinge rods 8, the distance between the two mounting blocks 11 is reduced, and the two push blocks 12 move together. As the two push blocks 12 approach each other, the qualified packaging printed products on the conveyor belt 2 can be straightened. The push block 12 and the mounting block 11 are threadedly connected, which makes it convenient to replace the push block 12 of appropriate length according to the actual size of the packaging printed products, so as to straighten the packaging printed products of different sizes.

[0042] The limiting groove 29 has a cross-shaped cross section. The slider 25 and the limiting groove 29 are slidably connected. The cross-shaped limiting groove 29 can prevent the slider 25 from separating from the limiting groove 29 during the sliding process, and the slider 25 will not flip during the sliding process.

[0043] In this invention, during use, the printed packaging is placed on one of the conveyor belts 2 and transported from left to right (as shown in the attached diagram). Figure 1 As shown, when the printed packaging moves to below the camera 15, the camera 15 and the PLC controller can capture images of the printed packaging and perform quality inspection. When the printing quality of the printed packaging is found to be substandard, the middle position of the substandard printed packaging moves to directly above the flipping block 5 as the conveyor belt 2 is conveyed. When the bottom surface of the printed packaging contacts the pulley 3 on the flipping block 5, the servo motor 4 starts. Since the drive end of the servo motor 4 is fixedly connected to the rotating shaft 7, the rotating shaft 7 rotates ninety degrees under the drive of the servo motor 4, and each flipping block 5 rotates ninety degrees at the same time.

[0044] As the flipping block 5, located within the mounting opening 31, rotates upwards, it can cause any defective printed packaging materials on its surface to rotate as well, thereby removing the defective printed packaging materials. When the flipping block 5 rotates to a vertical position, the adjacent flipping block 5 can rotate into the mounting opening 31 to facilitate the smooth passage or removal of the next printed packaging material, making it convenient to remove defective printed packaging materials. Furthermore, the flipping block 5 rotates at a relatively fast speed, and during its rotation, it will not obstruct the transportation of other printed packaging materials on the conveyor belt 2, which is beneficial for the inspection of the printing quality of printed packaging materials.

[0045] During the process of rotating the flipping block 5 inside the mounting port 31 from a horizontal state to a vertical state, when the flipping block 5 rotates upward at a certain angle, the slider 25 will slide along the limiting groove 29 under the action of gravity. The slider 25 has a large mass, and during the sliding process of the slider 25 in the limiting groove 29, it will squeeze the first rotating plate 28, causing the first rotating plate 28 to rotate. When the slider 25 moves to the maximum distance, the surface of the slider 25 contacts the surface of the first rotating plate 28. Under the transmission action of the first rotating plate 28, the rotating rod 14 and the flipping block 5 rotate relative to each other, and the torsion spring 27 deforms. During the rotation of the two support plates 13, they will extend and open outwards to the flipping block 5. At this time, the flipping block 5 is tilted. When the printed packaging slides to one end of the flipping block 5 under the action of gravity, it will contact the surface of the two support plates 13. The two support plates 13 can increase the contact area with the bottom surface of the printed packaging, preventing the printed packaging from sliding off the sides of the flipping block 5.

[0046] As the second rotating plate 23 rotates together with the rotating rod 14, the rubber blocks 22 on its surface engage with the corresponding grooves 30 on one of the pulleys 3, thus preventing the pulleys 3 and the fixed shaft 20 from rotating. Subsequently, during the rotation of the flipping block 5, the pulleys 3 are prevented from rotating, thereby preventing the printed packaging from sliding onto the other conveyor belt 2 as the pulleys 3 rotate. This facilitates the smooth removal of unqualified printed packaging from the conveyor belt 2 and effectively prevents unqualified printed packaging from falling onto the surface of the machine base 1. Afterward, the unqualified printed packaging will fall into the waste collection bin (not shown) on one side of the machine base 1 as the flipping block 5 rotates.

[0047] The highest point of pulley 3 is level with the upper surface of conveyor belt 2. When camera 15 detects that the packaged printed product is qualified, during the transportation of the packaged printed product on one conveyor belt 2, it will be directly conveyed along the surfaces of each pulley 3 on the flipping block 5 and moved to another conveyor belt 2. During the process of conveying the packaged printed product with its bottom surface against the surface of the pulley 3, each pulley 3 rotates relative to the flipping block 5 at the same time, thereby driving the fixed shaft 20 to rotate together. At this time, the rectangular block 6 at one end of the fixed shaft 20 is located in the rectangular opening 21, and the rough side surface of the rectangular opening 21 is in contact with the surface of the rectangular block 6 (as shown in the attached figure). Figure 5 As shown, the cross-sections of both the rectangular block 6 and the rectangular opening 21 are rectangular. Under the transmission action of the rectangular block 6, the fixed rod 18 will rotate together with the fixed shaft 20, and drive the cam 16 to rotate.

[0048] During the rotation of cam 16, it will squeeze extrusion plate 17 multiple times. Under the transmission action of extrusion plate 17, bending rod 9 and mounting plate 10 slide relative to each other, and first spring 19 deforms. Under the transmission action of two hinge rods 8, the distance between two mounting blocks 11 is reduced, and the two push blocks 12 move together. As the two push blocks 12 approach each other, the qualified packaging printed products on conveyor belt 2 can be straightened to facilitate subsequent processing or collection of qualified packaging printed products. There is no need for manual straightening of packaging printed products, making the operation more convenient.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A printing quality inspection device for packaging printed materials, characterized in that, Includes a camera (15), a PLC controller, a base (1), a waste collection bin, and two conveyor belts (2). The base (1) has a T-shaped mounting opening (31) between the two conveyor belts (2). A rotating assembly is provided inside the mounting port (31). The rotating assembly is used to reject unqualified packaging printed materials. The rotating assembly includes a rotating shaft (7) that is rotatably disposed inside the mounting port (31). A servo motor (4) for driving the rotating shaft (7) is fixedly connected to the inner wall of one side of the mounting port (31). A plurality of flipping blocks (5) are fixedly connected to the rotating shaft (7). Each of the flipping blocks (5) is provided with a support assembly for supporting the printed packaging. The support assembly includes a rotating rod (14) rotatably mounted on the flipping block (5). Two irregularly arranged support plates (13) are fixedly connected to the rotating rod (14). A first rotating plate (28) is fixedly connected to the rotating rod (14). A slider (25) that cooperates with the first rotating plate (28) is slidably connected inside the flipping block (5).

2. The packaging printing quality inspection equipment according to claim 1, characterized in that, Each of the flipping blocks (5) has a first mounting cavity (26) with a right-angled trapezoidal cross-section. The inclined inner wall of the first mounting cavity (26) has a limiting groove (29) for connecting the slider (25). A torsion spring (27) is sleeved on the rotating rod (14). One end of the torsion spring (27) is fixedly connected to the rotating rod (14), and the other end of the torsion spring (27) is fixedly connected to the inner wall of the first mounting cavity (26).

3. The packaging printing quality inspection equipment according to claim 2, characterized in that, Each of the flipping blocks (5) is provided with a second mounting cavity (24), and a fixed shaft (20) is rotatably connected in the second mounting cavity (24). Multiple pulleys (3) are fixedly connected on the fixed shaft (20), and each pulley (3) is rotatably connected to the flipping block (5). Multiple grooves (30) are provided on the side surface of one of the pulleys (3).

4. The packaging printing quality inspection equipment according to claim 3, characterized in that, Each of the rotating rods (14) is fixedly connected to a second rotating plate (23). The inner wall of one side of the first mounting cavity (26) is provided with an opening that communicates with the second mounting cavity (24). A plurality of rubber clips (22) are fixedly connected to one side surface of the second rotating plate (23). Each rubber clip (22) is engaged with a corresponding groove (30).

5. The packaging printing quality inspection equipment according to claim 3, characterized in that, Each of the fixed shafts (20) has a rectangular block (6) fixedly connected to one end of the second mounting cavity (24). A fixed rod (18) is fixedly connected to the base (1). One end of the fixed rod (18) has a rectangular opening (21) for connecting the rectangular block (6).

6. The packaging printing quality inspection equipment according to claim 5, characterized in that, A mounting plate (10) is fixedly connected to the lower surface of the base (1). A bending rod (9) is slidably connected to the mounting plate (10). A pressing plate (17) is fixedly connected to one end of the bending rod (9). A cam (16) that cooperates with the pressing plate (17) is fixedly connected to the fixing rod (18).

7. The packaging printing quality inspection equipment according to claim 6, characterized in that, The base (1) has two symmetrically arranged sliding openings, and each sliding opening is slidably connected to a mounting block (11). A hinge rod (8) is hinged to the mounting block (11), and the hinge rod (8) and the bending rod (9) are hinged together.

8. The packaging printing quality inspection equipment according to claim 6, characterized in that, A first spring (19) is sleeved on the bent rod (9), one end of the first spring (19) is fixedly connected to the bent rod (9), and the other end of the first spring (19) is fixedly connected to the mounting plate (10).

9. The packaging printing quality inspection equipment according to claim 7, characterized in that, Each of the mounting blocks (11) is threadedly connected to a push block (12), and each of the push blocks (12) has a T-shaped cross-section.

10. A packaging printing quality inspection device according to claim 2, characterized in that, The cross-section of the limiting groove (29) is arranged in a cross shape, and the slider (25) and the limiting groove (29) are slidably connected.

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