A drying and conveying device for printing of packaging bags

Abstract

The present application relates to the technical field of packaging bag production, and discloses a drying conveying device for packaging bag printing, which comprises a drying cylinder, air suction cylinders are rotationally connected to the left and right sides of the drying cylinder, rotary rings are integrally formed on the opposite sides of the two air suction cylinders, the two rotary rings are respectively embedded in the left and right sides of the drying cylinder and are rotationally connected with the drying cylinder, when the present application is used, the conveying mechanism is connected with external printing equipment, the packaging bags printed on both sides enter the conveying mechanism for transmission, the front and rear edges of the packaging bags are clamped and fixed by the transmission rollers on the front and rear sides in the conveying mechanism, so that the un-solidified printing patterns can be prevented from being adhered and scratched by the transmission equipment and affecting the pattern forming quality, when passing through the drying cylinder, the upper and lower drying devices simultaneously dry the printing patterns on the upper and lower surfaces of the packaging bags, and the air suction cylinder and other structures collect and filter the odor gas generated during drying, so as to reduce pollution.

Description

Technical Field

[0001] This invention relates to the field of packaging bag production technology, specifically to a drying and conveying device for printing packaging bags. Background Technology

[0002] Plastic packaging bags are bags used to package various goods, facilitating transportation and storage during production and distribution. Packaging bags are among the most common products in daily life. For aesthetic and promotional purposes, text and patterns are often printed on the surface of plastic bags. However, the ink is difficult to dry after printing, making immediate winding impossible and severely impacting production efficiency. Furthermore, undried ink can stain the conveyor belt, causing the plastic packaging bag patterns to become smudged. Moreover, ink removal is difficult, negatively affecting the usage process. Therefore, a new type of drying device for printed plastic packaging bags is urgently needed to solve these problems.

[0003] CN115230315A discloses a drying device for printed plastic packaging bags, comprising a drying shell, a packaging bag roll, a winding assembly, a printing reversing shaft, a winding reversing shaft, a packaging bag body, a drying assembly, an upper printing roller, and a lower printing roller. The drying shell is a hollow cavity with openings at both ends. The packaging bag roll is rotatably disposed within one end of the drying shell. The winding assembly is disposed within the drying shell at the end away from the packaging bag roll. The printing reversing shaft is rotatably disposed within the drying shell and on the side of the packaging bag roll closest to the winding assembly. The winding reversing shaft is rotatably disposed within the drying shell and on the side of the winding assembly closest to the packaging bag roll. This invention belongs to the field of packaging bag production technology, specifically providing a drying assembly that facilitates simultaneous drying of both the upper and lower surfaces of the packaging bag, and a winding assembly that facilitates rapid winding of the printed packaging bag. This device offers high drying efficiency, simple structure, convenient operation, and strong practicality for printed plastic packaging bags.

[0004] In this patent, the printing cylinder structure is placed inside the drying device to prevent the pattern from becoming blurred. However, the temperature inside the drying device is high, which can easily affect the printing quality of the printing equipment. It lacks practicality and does not meet the needs of actual use. Therefore, there is a lack of a device for transporting and drying packaging bags after printing, so as to carry out high-quality, double-sided, and efficient drying and transportation operations. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a drying and conveying device for printing packaging bags, which solves the problems mentioned in the background section.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, more specifically, a drying and conveying device for printing on packaging bags, comprising a drying cylinder, wherein suction cylinders are rotatably connected to both the left and right sides of the drying cylinder, and two rotating rings are integrally formed on opposite sides of the two suction cylinders, the two rotating rings being respectively embedded in the left and right sides of the drying cylinder and rotatably connected to the drying cylinder; multiple air passages are provided inside the drying cylinder; two supports are fixed at the front and rear sides of the inner wall of the drying cylinder, and a conveying mechanism is fixed together among the four supports; support blocks are fixed at the top and bottom of the inner wall of the drying cylinder, and dryers are fixed on opposite sides of the two support blocks; and air passages are provided inside the suction cylinders. The inner wall of the suction cylinder has several through-holes, all of which are connected to the interior of the second air passage. The interior of the rotating ring is connected to the interior of the second air passage. A bottom groove is formed below the outer surface of the drying cylinder. A motor is fixed inside the bottom groove. A rotating shaft is fixed to both the left and right ends of the output shaft of the motor. A spur gear is fixed to the end of the rotating shaft away from the motor. Several toothed grooves are formed on the outer surface of the rotating ring. The rotating ring is connected to the spur gear through the toothed grooves. A mesh groove is formed on the outer surface of the drying cylinder outside the multiple air passages. Multiple fans are fixed through the inner wall of the mesh groove. The fans are connected to the interior of the first air passage.

[0007] Furthermore, the outer surface of the drying cylinder is provided with mounting grooves on both the left and right sides of the mesh groove. A filter screen is provided inside the mesh groove. Mounting plates are fixed inside the two mounting grooves on the left and right sides of the filter screen, respectively. The mounting plates are detachably connected to the drying cylinder by bolts.

[0008] Furthermore, the transmission mechanism includes two transmission frames, each with a transmission groove on its opposite side. A connecting plate 1 is fixed to the right end of both transmission frames, and a connecting plate 2 is fixed to the left end of both transmission frames. Two slide rails are opened on opposite sides of each transmission frame. An inner groove is opened between the two slide rails inside each transmission frame. Several through slots are opened through the outer surface of each transmission frame, communicating with the transmission grooves and the inner grooves respectively. Two guide rods are slidably connected inside each through slot. A transmission wheel 1 is fixed to the end of each guide rod away from the transmission groove. A slider is slidably connected inside the slide rail. A motor 3 is fixed through the slider. A transmission wheel 2 is fixed to the output shaft of the motor 3 on the side away from the transmission groove. A transmission belt is provided on the outer surfaces of the two transmission wheels 2 and the outer surfaces of the several transmission wheels 1. The transmission frame is internally connected to several turntables. Two guide grooves are formed through the interior of each turntable. A guide rod is located inside the guide groove, with its end away from the first transmission wheel inside the transmission groove. A transmission roller is fixed to the outer surface of the guide rod inside the transmission groove. A second rotating shaft is fixed in the center of the turntable, located inside the inner groove. A worm gear is fixed to the outer surface of the second rotating shaft inside the inner groove. Several worm gears are meshed with a worm at their bottoms. The left and right ends of the worm pass through the interiors of two slides, each with a fixed screw. The outer surface of the screw is threaded to the upper interior of the slider. The screw is located above the third motor. A helical gear is fixed to the left end of the left-side screw. A helical gear is meshed with the bottom of the first helical gear. A rotating rod is fixed at the center of the lower surface of the second helical gear. Side grooves are formed on both the front and rear surfaces of the second connecting plate. A second motor is fixed inside each side groove. The top of the output shaft of the second motor passes through the interior of the slide and is fixedly connected to the bottom of the rotating rod.

[0009] Furthermore, two support legs are symmetrically fixed below the outer surface of the drying cylinder.

[0010] Furthermore, the number of through slots and the number of turntables are the same, and their positions correspond to each other.

[0011] Furthermore, the interior of the rotating ring is connected to the interior of the first air passage, and the interior of the first air passage is connected to the interior of the mesh groove through the fan.

[0012] The beneficial effects of the drying and conveying device for printing packaging bags according to the present invention are as follows: In use, the conveying mechanism is connected to external printing equipment. The packaging bag printed on both sides enters the conveying mechanism for conveying. The front and rear edges of the packaging bag are clamped and fixed by the conveying rollers on the front and rear sides of the conveying mechanism, so as to avoid the uncured printed pattern from contacting the conveying equipment and sticking and scratching, which would affect the pattern forming quality. When passing through the drying cylinder, the dryers on the upper and lower sides of the packaging bag dry the printed patterns on the upper and lower sides at the same time. The suction cylinder and other structures collect and filter the odor gas generated during drying, reducing pollution. Four motors drive four transmission wheels to rotate, which, in turn, rotate the conveyor rollers that hold the packaging bags, driven by the transmission belt, transmission wheel one, and guide rods, thus moving the packaging bags. By controlling the operation of motor two, the screw and worm gear rotate simultaneously under the transmission of helical gear two and helical gear one. The rotation of the screw causes the slider to drive motor three and transmission wheel two to move laterally. The rotation of the worm gear, under the transmission of the worm wheel, causes the rotating shaft two and the turntable to rotate. When the turntable rotates, the inner walls of the two guide grooves push against the guide rods, causing the two guide rods to move relative to or away from each other along the through grooves to adjust the spacing, thus clamping packaging bags of different thicknesses and making it more versatile. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the suction cylinder and the rotating ring in this invention; Figure 4 This is a schematic diagram of the transmission mechanism in this invention; Figure 5 This is a top-section schematic diagram of the transmission mechanism in this invention.

[0015] In the diagram: 1. Drying cylinder; 2. Suction cylinder; 3. Rotating ring; 4. Air duct one; 5. Support; 6. Transmission mechanism; 7. Support block; 8. Dryer; 9. Air duct two; 10. Air hole; 11. Bottom groove; 12. Motor one; 13. Rotating shaft one; 14. Spur gear; 15. Gear groove; 16. Mesh groove; 17. Fan; 18. Filter screen; 19. Mounting groove; 20. Mounting plate; 21. Transmission frame; 22. Transmission groove; 23. Connecting plate one; 24. 25. Connecting plate 2; 26. Slide rail; 27. Inner groove; 28. Through groove; 29. ​​Guide rod; 30. Transmission wheel 1; 31. Slider; 32. Transmission wheel 2; 33. Transmission belt; 34. Turntable; 35. Guide groove; 36. Transmission roller; 37. Rotating shaft 2; 38. Worm gear; 39. Worm; 40. Screw; 41. Helical gear 1; 42. Helical gear 2; 43. Rotating rod; 44. Side groove; 45. Motor 2; 46. Support leg; 47. Motor 3. Detailed Implementation

[0016] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0017] like Figure 1-5As shown, according to one aspect of the present invention, a drying and conveying device for printing packaging bags is provided, comprising a drying cylinder 1, with suction cylinders 2 rotatably connected to both the left and right sides of the drying cylinder 1. Rotating rings 3 are integrally formed on opposite sides of the two suction cylinders 2, and are respectively embedded in the left and right sides of the drying cylinder 1 and rotatably connected to the drying cylinder 1. Multiple air passages 4 are provided inside the drying cylinder 1. Two supports 5 are fixed to the front and rear sides of the inner wall of the drying cylinder 1, and a conveying mechanism 6 is fixed between the four supports 5. Support blocks 7 are fixed to the upper and lower sides of the inner wall of the drying cylinder 1, and dryers 8 are fixed to opposite sides of the two support blocks 7. The dryers 8 are existing drying equipment. Air passages 9 are provided inside the suction cylinders 2, and the inner wall of the suction cylinders 2 is provided with... Several through-holes 10 are connected to the interior of air passage 2 9. The interior of the rotating ring 3 is connected to the interior of air passage 2 9. A bottom groove 11 is provided below the outer surface of the drying cylinder 1. A motor 12 is fixed inside the bottom groove 11. The motor 12 is a single-shaft dual-output motor. A rotating shaft 13 is fixed to the left and right ends of the output shaft of the motor 12. A spur gear 14 is fixed to the end of the rotating shaft 13 away from the motor 12. Several toothed grooves 15 are provided on the outer surface of the rotating ring 3. The rotating ring 3 is connected to the spur gear 14 through the toothed grooves 15. A mesh groove 16 is provided on the outer surface of the drying cylinder 1 outside the multiple air passages 1 4. Multiple fans 17 are fixed through the inner wall of the mesh groove 16. The fans 17 are connected to the interior of the air passages 1 4.

[0018] In this embodiment, the outer surface of the drying cylinder 1 is provided with mounting grooves 19 on both the left and right sides of the mesh groove 16. The mesh groove 16 is provided with a filter screen 18, which is an existing air filter screen. Mounting plates 20 are fixed inside the two mounting grooves 19 on the left and right sides of the filter screen 18, respectively. The mounting plates 20 are detachably connected to the drying cylinder 1 by bolts.

[0019] In this embodiment, the transmission mechanism 6 includes two transmission frames 21. Each of the two transmission frames 21 has a transmission groove 22 on its opposite side. A connecting plate 23 is fixed to the right end of both transmission frames 21, and a connecting plate 24 is fixed to the left end of both transmission frames 21. Each of the two transmission frames 21 has two slide rails 25 on its opposite side. An inner groove 26 is provided inside the transmission frame 21 between the two slide rails 25. Several through grooves 27 are provided through the outer surface of the transmission frame 21. The through grooves 27 are connected to the transmission grooves 22 and the inner grooves 26 respectively. Two guide rods 28 are slidably connected inside the through grooves 27. A transmission wheel 29 is fixed to the end of the guide rod 28 away from the transmission groove 22. A slider 30 is slidably connected inside the slide rail 25. A motor 46 is fixed through the slider 30. A transmission wheel 31 is fixed to the side of the output shaft of the motor 46 away from the transmission groove 22. A transmission belt 32 is provided on the outer surface of the two transmission wheels 31 and the outer surface of the several transmission wheels 29. Several turntables 33 are rotatably connected inside the transmission frame 21. Two guide grooves 34 are opened through the turntables 33. A guide rod 28 is located inside the guide groove 34. The end of the guide rod 28 away from the first transmission wheel 29 is located inside the transmission groove 22. A transmission roller 35 is fixed to the outer surface of the guide rod 28 inside the transmission groove 22. A second rotating shaft 36 is fixed in the middle of the turntable 33. The second rotating shaft 36 is located inside the inner groove 26. A worm gear 37 is fixed to the outer surface of the second rotating shaft 36 inside the inner groove 26. The bottoms of several worm gears 37 are connected to a worm 38. The left and right ends of the worm 38 pass through the two slides 25 respectively, and each is fixed with a screw 39. The outer surface of the screw 39 is threaded to the upper part of the slider 30. The screw 39 is located above the third motor 46. The left end of the left screw 39 is fixed with a screw. Helical gear 40 is connected to helical gear 41 at its bottom. A rotating rod 42 is fixed at the center of the lower surface of helical gear 41. Side grooves 43 are opened on both the front and rear surfaces of connecting plate 24. Motor 2 44 is fixed inside the side grooves 43. The top of the output shaft of motor 2 44 passes through the slide rail 25 and is fixedly connected to the bottom of the rotating rod 42. By adjusting the distance between the two upper and lower transmission rollers 35, it can be used to adapt to packaging bags of different thicknesses and the clamping tightness can be adjusted. When the transmission wheel 29 moves up and down, the transmission is driven by the worm gear 37, worm 38, screw 39 and other structures, so that the slider 30 drives the transmission wheel 31 to slide, so that the transmission belt 32 can keep in close contact with the two transmission wheels, without the need for personnel to change the transmission belt 32 of different circumferences for adaptation.

[0020] In this embodiment, two support legs 45 are symmetrically fixed below the outer surface of the drying cylinder 1, and the device is placed on the ground by means of the support legs 45.

[0021] In this embodiment, the inside of the rotating ring 3 is connected to the inside of the first air passage 4. The inside of the first air passage 4 is connected to the inside of the mesh groove 16 through the fan 17. The fan 17 blows air outward, and the air inside the suction cylinder 2 is drawn through the first air passage 4, the inside of the rotating ring 3, the second air passage 9, and the air hole 10 in sequence. This avoids the odor and harmful gases generated during drying from drifting and causing pollution. Finally, the harmful impurities in the gas are adsorbed by the filter screen 18.

[0022] The working principle of this device is as follows: When in use, the transmission mechanism 6 is connected to the external printing equipment. The packaging bag printed on both sides enters the transmission mechanism 6 for transmission. The front and rear edges of the packaging bag are clamped and fixed by the transmission rollers 35 on the front and rear sides of the transmission mechanism 6, so as to avoid the uncured printed pattern from contacting the transmission equipment and sticking and scratching, which would affect the pattern forming quality. When passing through the drying cylinder 1, the dryers 8 above and below dry the printed patterns on the top and bottom of the packaging bag at the same time. The suction cylinder 2 and other structures collect and filter the odor gas generated during drying, reducing pollution. Four motors 346 drive four transmission wheels 31 to rotate, and the transmission rollers 35, which hold the packaging bags, rotate under the drive of the transmission belt 32, transmission wheel 29, and guide rod 28, thereby moving the packaging bags. By controlling the operation of motor 244, the screw 39 and worm gear 38 rotate simultaneously under the drive of helical gears 241 and 40. The rotation of screw 39 causes slider 30 to drive motor 346 and transmission wheel 21 to move laterally. The rotation of worm gear 38, under the drive of worm wheel 37, causes rotating shaft 26 and turntable 33 to rotate. When turntable 33 rotates, the inner walls of two guide grooves 34 push against guide rod 28, causing the two guide rods 28 to move relative to or away from each other along through groove 27 to adjust the spacing, thus holding packaging bags of different thicknesses and making it more versatile.

[0023] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A drying conveyor for printing on packaging bags, comprising a drying cylinder (1), characterized in that: The drying cylinder (1) is rotatably connected to the left and right sides of the suction cylinder (2). The two suction cylinders (2) are integrally formed with rotating rings (3) on opposite sides. The two rotating rings (3) are respectively embedded on the left and right sides of the drying cylinder (1) and are rotatably connected to the drying cylinder (1). The drying cylinder (1) has multiple air passages (4) inside. The inner wall of the drying cylinder (1) has two supports (5) fixed at the front and back. The four supports (5) are connected together by a transmission mechanism (6). The inner wall of the drying cylinder (1) has support blocks (7) fixed at the top and bottom. The two support blocks (7) are fixed with dryers (8) on opposite sides. The suction cylinder (2) has an air passage (9) inside. The inner wall of the suction cylinder (2) has several through-holes (10). The several air holes (10) are connected to the air passages (2). (9) The interior of the rotating ring (3) is connected to the interior of the second air passage (9). A bottom groove (11) is provided below the outer surface of the drying cylinder (1). A motor (12) is fixed inside the bottom groove (11). A rotating shaft (13) is fixed at both the left and right ends of the output shaft of the motor (12). A spur gear (14) is fixed at the end of the rotating shaft (13) away from the motor (12). A number of tooth grooves (15) are provided on the outer surface of the rotating ring (3). The rotating ring (3) is meshed with the spur gear (14) through the tooth grooves (15). A mesh groove (16) is provided on the outer surface of the drying cylinder (1) outside the multiple air passages (4). A number of fans (17) are fixed through the inner wall of the mesh groove (16). The fans (17) are connected to the interior of the air passage (4). The transmission mechanism (6) includes two transmission frames (21). Each of the two transmission frames (21) has a transmission groove (22) on its opposite side. A connecting plate (23) is fixed to the right end of each of the two transmission frames (21), and a connecting plate (24) is fixed to the left end of each of the two transmission frames (21). Two slide rails (25) are opened on the opposite sides of each of the two transmission frames (21). An inner groove (26) is opened inside each transmission frame (21) between the two slide rails (25). Several through grooves (27) are opened through the outer surface of each transmission frame (21). These through grooves (27) are respectively connected to the transmission... The groove (22) and the inner groove (26) are connected internally. Two guide rods (28) are slidably connected inside the through groove (27). A transmission wheel (29) is fixed at one end of the guide rod (28) away from the transmission groove (22). A slider (30) is slidably connected inside the slide rail (25). A motor (46) is fixed through the slider (30). A transmission wheel (31) is fixed on the side of the output shaft of the motor (46) away from the transmission groove (22). A transmission belt (32) is provided on the outer surface of the two transmission wheels (31) and the outer surface of several transmission wheels (29). The transmission frame (21) is rotatably connected to several turntables (33). Two guide grooves (34) are opened through the turntables (33). The guide rod (28) is located inside the guide grooves (34). The end of the guide rod (28) away from the first transmission wheel (29) is located inside the transmission groove (22). A transmission roller (35) is fixed on the outer surface of the guide rod (28) inside the transmission groove (22). A second rotating shaft (36) is fixed in the middle of the turntable (33). The second rotating shaft (36) is located inside the inner groove (26). A worm gear (37) is fixed on the outer surface of the second rotating shaft (36) inside the inner groove (26). The bottoms of several worm gears (37) are meshed with a worm (38). The left and right ends of the screw (39) are respectively inserted into the two slide rails (25) and are fixed with screws (39). The outer surface of the screw (39) is threaded to the upper part of the slider (30). The screw (39) is located above the motor (46). The left end of the screw (39) on the left side is fixed with a helical gear (40). The bottom of the helical gear (40) is meshed with a helical gear (41). A rotating rod (42) is fixed at the center of the lower surface of the helical gear (41). The front and rear surfaces of the connecting plate (24) are provided with side grooves (43). The motor (44) is fixed inside the side grooves (43). The top end of the output shaft of the motor (44) is inserted into the slide rail (25) and is fixedly connected to the bottom end of the rotating rod (42).

2. The drying and conveying device for printing on packaging bags according to claim 1, characterized in that: The outer surface of the drying cylinder (1) is provided with mounting grooves (19) on both the left and right sides of the mesh groove (16). The mesh groove (16) is provided with a filter screen (18). The left and right sides of the filter screen (18) are respectively fixed with mounting plates (20) inside the two mounting grooves (19). The mounting plates (20) are detachably connected to the drying cylinder (1) by bolts.

3. The drying and conveying device for printing on packaging bags according to claim 1, characterized in that: Two support legs (45) are symmetrically fixed below the outer surface of the drying cylinder (1).

4. A drying conveyor device for printing on packaging bags according to claim 1, characterized in that: The number of through slots (27) and turntables (33) are the same, and their positions correspond to each other.

5. A drying conveyor device for printing on packaging bags according to claim 1, characterized in that: The inside of the rotating ring (3) is connected to the inside of the air passage (4), and the inside of the air passage (4) is connected to the inside of the mesh groove (16) through the fan (17).

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