A water-based ink drying device for flexible packaging gravure printing film

Abstract

The present invention relates to the technical field of gravure printing for flexible packaging, and in particular to a water-based ink drying device for a gravure printing film for flexible packaging. The present invention provides a water-based ink drying device for a gravure printing film for flexible packaging, which can flatten the printed film and ensure the printing drying effect. A water-based ink drying device for a gravure printing film for flexible packaging comprises a box, an oven, a filter plate, a conveying mechanism, and a smoothing mechanism, etc.; the left and right parts of the box are connected to ovens, the lower side of the oven is connected to filter plates, a conveying mechanism for conveying the printed film is provided on the box, and a smoothing mechanism for smoothing the printed film is provided between the conveying mechanism and the box. The conveying roller rotates to drive the printed surface of the printed film to be conveyed forward downward, and the printed film is dried by generating hot air through the oven, and the smoothing roller continuously slides back and forth to smooth the printed film, thereby ensuring the printing or drying effect.

Description

Technical Field

[0001] The invention relates to the technical field of flexible package gravure printing, in particular to a water-based ink drying device for a flexible package gravure printing film. Background Art

[0002] Gravure printing, also known as gravure printing, is mainly used for printing plastic flexible packaging films. Gravure printing achieves the purpose of printing by directly pressing the ink contained in the gravure pits onto the substrate.

[0003] The patent authorization announcement number CN217197423U discloses a water-based ink drying device for flexible packaging gravure printing film. The drying device includes an oven, a heater, an air inlet pipe, an exhaust pipe, and a heat exchanger. The oven is a rectangular parallelepiped. The lower part of the oven is connected to the air outlet of the heater through the air inlet pipe. There are long holes on opposite sides of the oven for the printing film substrate to pass through. The length of the long hole matches the width of the printing film substrate, and the width of the long hole is 4-10 times the thickness of the printing film substrate. A blowing plate is installed in the oven. The long hole of the oven and the pipe mouth of the air inlet pipe at the lower part of the oven are respectively located on both sides of the blowing plate. The plate surface of the blowing plate is opposite to the plane of the printing film passing through the long hole of the oven. The side of the oven outside the long hole is connected to the heat exchanger through the exhaust pipe. The lower part of the heat exchanger is connected to the air inlet of the heater. The upper end of the heat exchanger has a heat exchanger air inlet and a heat exchanger exhaust respectively. The heater of the drying device can provide hot air to the oven to increase the drying temperature. The blowing plate gradually dries the printed film through blowing ports of different diameters, alleviating the false drying phenomenon during the printing and drying process. However, during the pulling and conveying process of the printed film, the printed film itself is prone to wrinkling, affecting the printing or drying effect.

[0004] To this end, we propose a water-based ink drying device for flexible packaging gravure printing film, which can flatten the printed film and ensure the printing drying effect. Summary of the Invention

[0005] In order to overcome the shortcoming that the existing drying device cannot flatten the printed film, the present invention provides a water-based ink drying device for flexible packaging gravure printing film, which can flatten the printed film and ensure the printing drying effect.

[0006] A water-based ink drying device for flexible packaging gravure printing film includes a box body, an oven, a filter plate, a conveying mechanism and a smoothing mechanism. The left and right parts of the box body are connected to the oven, and the lower side of the oven is connected to the filter plate. The box body is provided with a conveying mechanism for conveying the printed film, and a smoothing mechanism for smoothing the printed film is provided between the conveying mechanism and the box body.

[0007] Furthermore, the conveying mechanism includes a mounting plate, a rotating shaft, a conveying roller, a pulley, a driving motor and a flat belt. The left and right sides of the box are connected to the mounting plates. The front and rear parts between the left and right mounting plates are rotatably connected to the rotating shaft. The conveying rollers are connected to the rotating shafts. The middle position of the left side of the right mounting plate is connected to the driving motor. The output shaft of the driving motor is connected to a pulley. The right side of the rotating shaft is connected to the same pulley, and a flat belt is placed between several pulleys.

[0008] Furthermore, the smoothing mechanism includes an L-shaped rod, a guide rod, a smoothing roller, a first mounting block, a sliding block and a first spring. The flat belt is connected to the L-shaped rod, the right side of the left mounting plate is connected to the guide rod, the smoothing roller is slidably connected to the guide rod, the right side of the smoothing roller is connected to the first mounting block, the upper and lower parts of the first mounting block are both slidably connected to the sliding block, the L-shaped rod rotates to contact the sliding block, and the first spring is connected between the sliding block and the first mounting block.

[0009] Furthermore, it also includes an external expansion mechanism for controlling the outward expansion of the printed film, the external expansion mechanism includes a second mounting block, a rotating frame, a torsion spring, a rotating block and a blowing assembly, the front inner side of the mounting plate is connected to the second mounting block, the second mounting block is rotatably connected to the rotating frame, two torsion springs are connected between the rotating frame and the adjacent second mounting block, the inner end of the rotating frame is rotatably connected to the rotating block, and a blowing assembly for blowing the rotating block to rotate is provided on the box body.

[0010] Furthermore, the blowing assembly includes a first hollow cylinder, an air inlet pipe, an air outlet pipe, a piston rod, a second spring, a contact block, a hose and a third spring. The first hollow cylinder is connected to the right front portion of the upper side of the box body, the right side of the front of the first hollow cylinder is connected to the air inlet pipe with a one-way valve, the left side of the front of the first hollow cylinder is connected to the air outlet pipe with a one-way valve, the outlet of the air outlet pipe is aligned with the rotating block on the right side, the piston rod is slidingly connected in the first hollow cylinder, the second spring is connected between the piston rod and the first hollow cylinder, the contact block is slidingly connected to the rear of the piston rod, the L-shaped rod rotates to contact the contact block, the front portion of the upper side of the box body is connected to a hose with a one-way valve, the right end of the hose is connected to the front side of the first hollow cylinder, the outlet of the left end of the hose is aligned with the rotating block on the left side, and the third spring is connected between the contact block and the piston rod.

[0011] Furthermore, it also includes a preheating mechanism for preheating the printed film, the preheating mechanism includes a placement plate, a frame and a first connecting tube, the left and right parts of the rear side of the box are connected to the placement plates, the frame is placed between the left and right placement plates, and the first connecting tube is connected between the frame and the rear side of the box.

[0012] Furthermore, it also includes a fixing mechanism for fixing the box body, which includes a square plate, a fixing plate and a screw. The lower outer side of the mounting plate is connected to the square plate, the square plate is slidably connected to the fixing plate, the rear of the square plate is connected to the screw through a thread, and the inner end of the screw is rotatably connected to the adjacent fixing plate.

[0013] Furthermore, it also includes a clamping mechanism for clamping the printing equipment, the clamping mechanism includes a third mounting block, a rotating plate, a second hollow cylinder and a second connecting tube, the third mounting blocks are connected to the left and right sides of the frame, the outer ends of the third mounting blocks are rotatably connected to the rotating plates, the second hollow cylinder is connected to the rotating plate on the left, the right end of the second hollow cylinder is in contact with the rotating plate on the right, the second connecting tube is connected to the upper left side of the frame, and the tail end of the second connecting tube is connected to the left side of the second hollow cylinder.

[0014] The present invention has the following advantages: 1. The conveying roller rotates to drive the printed surface of the printed film to be conveyed forward downward, and the hot air generated by the oven is used to dry the printed film. The smoothing roller continuously slides back and forth to smooth the printed film, thereby ensuring the printing or drying effect.

[0015] 2. The piston rod slides back and forth to allow the hose and the air outlet pipe to blow out the air, thereby controlling the rotation of the rotating block. The rotation of the rotating block can pull the left and right sides of the printed film outward to further flatten the printed film.

[0016] 3. Install the frame in the middle of the printing equipment. During the printing process, the frame will use hot air to preheat and dry the printing film in the printing process to ensure printing quality.

[0017] 4. The frame of the printing device is inserted between the mounting plate and the fixed plate. The reverse screw controls the fixed plate to move inward to cooperate with the mounting plate to fix the frame of the printing device, thereby increasing the stability of the device.

[0018] 5. The second hollow cylinder passes through the top of the printing film. During the printing process, the second hollow cylinder and the frame dry the printing film from the upper and lower sides respectively to ensure the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 This is a schematic cross-sectional structural diagram of part of the present invention from the first perspective.

[0021] Figure 3 This is a schematic cross-sectional structural diagram of the second perspective of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the conveying mechanism of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the smoothing mechanism of the present invention.

[0024] Figure 6 It is a schematic diagram of the partial three-dimensional structure of the smoothing mechanism of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the outward expansion mechanism of the present invention.

[0026] Figure 8 It is a partial cross-sectional structural schematic diagram of the expansion mechanism of the present invention.

[0027] Figure 9 It is a partial three-dimensional structural schematic diagram of the outward expansion mechanism of the present invention.

[0028] Figure 10 It is a schematic diagram of the partial three-dimensional structure of the expansion mechanism of the present invention.

[0029] Figure 11 It is a schematic diagram of the three-dimensional structure of the preheating mechanism of the present invention.

[0030] Figure 12 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention.

[0031] Figure 13 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention.

[0032] Figure numbers: 1_box, 2_oven, 3_filter plate, 4_conveyor mechanism, 41_mounting plate, 42_rotating shaft, 421_conveyor roller, 43_pulley, 44_drive motor, 45_flat belt, 5_smoothing mechanism, 51_L-shaped rod, 52_guide rod, 53_smoothing roller, 54_first mounting block, 55_sliding block, 56_first spring, 6_external expansion mechanism, 61_second mounting block, 62_rotating frame, 63_torsion spring, 64_rotating block, 65_first hollow cylinder, 66_air inlet pipe, 67_air outlet pipe, 68_piston rod, 69_second spring, 691_contact block, 692_hose, 693_third spring, 7_preheating mechanism, 71_placing plate, 72_frame, 73_first connecting pipe, 8_fixing mechanism, 81_square plate, 82_fixing plate, 83_screw, 9_clamping mechanism, 91_third mounting block, 92_rotating plate, 93_second hollow cylinder, 94_second connecting pipe. DETAILED DESCRIPTION

[0033] Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of such a phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] Example 1

[0035] A water-based ink drying device for flexible packaging gravure printing film, such as Figure 1 、 Figure 2 and Figure 3 As shown, it includes a box body 1, an oven 2, a filter plate 3, a conveying mechanism 4 and a smoothing mechanism 5. The oven 2 is bolted to the left and right parts of the box body 1, and the filter plate 3 is bolted to the lower side of the oven 2. The box body 1 is provided with a conveying mechanism 4, which can convey the printed film. A smoothing mechanism 5 is provided between the conveying mechanism 4 and the box body 1, which can smooth the printed film.

[0036] When using this device, the staff installs the box 1 to the exit of the printing equipment, so that the printed film is sent to the upper side of the device and guided by the conveying mechanism 4. The oven 2 can operate to dry the printed film. The filter plate 3 can prevent dust from being sucked into the oven 2 and contaminating the printed film. During the conveying process, the smoothing mechanism 5 can smooth the wrinkled printed film to ensure the printing and drying effect.

[0037] like Figure 1 and Figure 4 As shown, the conveying mechanism 4 includes a mounting plate 41, a rotating shaft 42, a conveying roller 421, a pulley 43, a driving motor 44 and a flat belt 45. The left and right sides of the box body 1 are bolted with mounting plates 41, and the front and rear parts between the left and right mounting plates 41 are connected to the rotating shaft 42 through bearings. The conveying roller 421 is keyed on the rotating shaft 42. The driving motor 44 is bolted to the middle position on the left side of the right mounting plate 41, and the output shaft of the driving motor 44 is keyed with a pulley 43. The right part of the rotating shaft 42 is keyed to the same pulley 43, and a flat belt 45 is sleeved between the three pulleys 43.

[0038] When using this device, the staff controls the printing mold to pass through the lower side of the front and rear conveying rollers 421, and then starts the drive motor 44. The output shaft of the drive motor 44 rotates to drive the middle pulley 43 to rotate, and then drives the rotating shaft 42 to rotate through the flat belt 45 and the other two pulleys 43. The rotation of the rotating shaft 42 drives the conveying roller 421 to rotate, and the conveying roller 421 rotates to convey the printed film for drying. When the device is finished using, the staff turns off the drive motor 44.

[0039] like Figure 1 、 Figure 5 and Figure 6 As shown, the smoothing mechanism 5 includes an L-shaped rod 51, a guide rod 52, a smoothing roller 53, a first mounting block 54, a sliding block 55 and a first spring 56. The L-shaped rod 51 is connected to the flat belt 45. The guide rod 52 is bolted to the right side of the left mounting plate 41. The smoothing roller 53 is slidably connected to the guide rod 52. The first mounting block 54 is welded to the right side of the smoothing roller 53. The upper and lower parts of the first mounting block 54 are both slidably connected to the sliding block 55. The L-shaped rod 51 rotates and contacts the sliding block 55. The first spring 56 is connected between the sliding block 55 and the first mounting block 54.

[0040] When using this device, the rotation of the flat belt 45 will drive the L-shaped rod 51 to rotate. When the L-shaped rod 51 rotates to contact the sliding block 55, the L-shaped rod 51 continues to rotate to push the sliding block 55 to move forward or backward, and then drives the smoothing roller 53 to slide back and forth through the first mounting block 54. The printing film is smoothed by the smoothing roller 53, thereby ensuring the printing or drying effect. When the smoothing roller 53 slides back and forth to a certain distance, the L-shaped rod 51 continues to rotate to squeeze the sliding block 55 to slide into the first mounting block 54, and the first spring 56 is deformed. When the L-shaped rod 51 rotates to disengage from the sliding block 55, the sliding block 55 slides outward and resets under the action of the first spring 56.

[0041] Example 2

[0042] On the basis of Example 1, Figure 1 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10As shown, it also includes an external expansion mechanism 6, which can control the printing film to expand outward. The external expansion mechanism 6 includes a second mounting block 61, a rotating frame 62, a torsion spring 63, a rotating block 64, a first hollow cylinder 65, an air inlet pipe 66, an air outlet pipe 67, a piston rod 68, a second spring 69, a contact block 691, a hose 692 and a third spring 693. The front inner side of the mounting plate 41 is bolted to the second mounting block 61, and the second mounting block 61 is connected to the rotating frame 62 through a bearing. The front and rear parts of the rotating frame 62 and the adjacent second mounting block 61 are connected to the torsion spring 63. The inner end of the rotating frame 62 is connected to the rotating block 64 through a bearing. The first hollow cylinder 65 is bolted to the front right upper side of the box body 1. The air inlet pipe 66 with a one-way valve is connected to the right side of the front of the first hollow cylinder 65, the air outlet pipe 67 with a one-way valve is connected to the left side of the front of the first hollow cylinder 65, the outlet of the air outlet pipe 67 is aligned with the rotating block 64 on the right side, the piston rod 68 is slidingly connected in the first hollow cylinder 65, the second spring 69 is connected between the piston rod 68 and the first hollow cylinder 65, the contact block 691 is slidingly connected to the rear of the piston rod 68, the L-shaped rod 51 rotates and contacts the contact block 691, the hose 692 with a one-way valve is connected to the upper front of the box body 1, the right end of the hose 692 is connected to the front side of the first hollow cylinder 65, the outlet of the left end of the hose 692 is aligned with the left rotating block 64, and the third spring 693 is connected between 691 and the piston rod 68.

[0043] When using the device, the staff pushes the rotating frame 62 to rotate downward, the torsion spring 63 is deformed, the rotating frame 62 rotates downward, driving the rotating block 64 to rotate downward. At this time, the staff passes the printing film through the front and rear two conveying rollers 421, so that the printing film is located on the rotating block 64, and then releases the rotation. Under the action of the torsion spring 63 resetting, the rotating frame 62 drives the rotating block 64 to rotate upward and reset to contact the lower side of the printing film. During the drying process, when the L-shaped rod 51 rotates to contact the contact block 691, the L-shaped rod 51 continues to rotate to push the contact block 691 to move backward. The backward movement of the contact block 691 drives the piston rod 68 to slide forward, the second spring 69 is deformed, and the piston rod 68 slides forward The air is sucked into the first hollow cylinder 65 through the air outlet pipe 67. After the piston rod 68 slides forward a certain distance, the L-shaped rod 51 continues to rotate to squeeze the contact block 691 to slide downward, and the third spring 693 is deformed. When the contact block 691 is separated from the L-shaped rod 51, the contact block 691 slides upward and resets under the action of the third spring 693. Under the action of the second spring 69, the piston rod 68 slides forward and resets. The piston rod 68 slides forward to squeeze the air into the air outlet pipe 67 and the hose 692, and the air is blown out through the hose 692 and the air outlet pipe 67, thereby driving the rotating block 64 to rotate. The rotation of the rotating block 64 can pull the left and right sides of the printing film outward, further flattening the printing film.

[0044] like Figure 1 and Figure 11 As shown, a preheating mechanism 7 is also included, which can preheat the printed film. The preheating mechanism 7 includes a placement plate 71, a frame 72 and a first connecting tube 73. The left and right parts of the rear side of the box body 1 are bolted with placement plates 71, a frame 72 is placed between the left and right placement plates 71, and a first connecting tube 73 is connected between the front left part of the frame 72 and the rear left part of the box body 1.

[0045] When using the device, the staff can remove the frame 72 from the placement plate 71, and then install the frame 72 in the middle position of the printing equipment. During the printing process, the hot air in the box 1 is introduced into the frame 72 through the first connecting pipe 73, and then discharged from the frame 72, thereby preheating and preliminarily drying the printing film in the printing process to ensure printing quality.

[0046] like Figure 1 and Figure 12 As shown, it also includes a fixing mechanism 8, which can fix the box body 1. The fixing mechanism 8 includes a square plate 81, a fixing plate 82 and a screw 83. The lower outer side of the mounting plate 41 is bolted with a square plate 81, and the square plate 81 is slidably connected to the fixing plate 82. The rear part of the square plate 81 is connected to the screw 83 through a thread, and the inner end of the screw 83 is connected to the adjacent fixing plate 82 through a bearing.

[0047] When using this device, the staff rotates the screw 83 to control the fixed plate 82 to slide outward. After the fixed plate 82 slides outward and opens, the staff controls the device to move to a suitable position so that the frame of the printing equipment is stuck between the mounting plate 41 and the fixed plate 82. Then, the screw 83 is reversed to control the fixed plate 82 to move inward, so that the fixed plate 82 and the mounting plate 41 cooperate to fix the frame of the printing equipment, thereby increasing the stability of the use of this device.

[0048] like Figure 1 and Figure 13 As shown, it also includes a clamping mechanism 9, which can clamp the printing equipment. The clamping mechanism 9 includes a third mounting block 91, a rotating plate 92, a second hollow cylinder 93 and a second connecting tube 94. The third mounting blocks 91 are bolted to the left and right sides of the frame 72. The outer ends of the third mounting blocks 91 are connected to the rotating plates 92 through hinges. The second hollow cylinder 93 is connected to the rotating plate 92 on the left. The right end of the second hollow cylinder 93 is in contact with the rotating plate 92 on the right, and the right end of the second hollow cylinder 93 is supported by the right rotating plate 92. The second connecting tube 94 is connected to the left side of the upper side of the frame 72, and the tail end of the second connecting tube 94 is connected to the left side of the second hollow cylinder 93.

[0049] When using this device, the staff locks the right rotating plate 92 and rotates it to the right to open it, and then pushes the left rotating plate 92 to rotate to the left, thereby driving the second hollow cylinder 93 to rotate to the left, and then the staff passes the frame 72 and the second hollow cylinder 93 through the upper and lower sides of the printing film respectively. After passing through, the staff controls the left and right rotating plates 92 to rotate inward and reset, and supports the right part of the second hollow cylinder 93 through the right rotating plate 92. During the printing process, the hot air in the frame 72 is then introduced into the second hollow cylinder 93 through the second connecting pipe 94, and the printed film is dried from the upper and lower sides respectively through the second hollow cylinder 93 and the frame 72 to ensure the drying effect.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-based ink drying device for a flexible packaging gravure printing film, comprising a box (1), an oven (2) and a filter plate (3), wherein the left and right sides of the box (1) are connected to the oven (2), and the lower side of the oven (2) is connected to the filter plate (3), characterized in that: It also includes a conveying mechanism (4) and a smoothing mechanism (5), wherein the box body (1) is provided with a conveying mechanism (4) for conveying the printed film, and a smoothing mechanism (5) for smoothing the printed film is provided between the conveying mechanism (4) and the box body (1); The conveying mechanism (4) includes a mounting plate (41), a rotating shaft (42), a conveying roller (421), a pulley (43), a driving motor (44) and a flat belt (45). The left and right sides of the box (1) are connected to the mounting plate (41). The front and rear parts between the left and right mounting plates (41) are rotatably connected to the rotating shaft (42). The rotating shaft (42) is connected to the conveying roller (421). The middle position of the left side of the right mounting plate (41) is connected to the driving motor (44). The output shaft of the driving motor (44) is connected to the pulley (43). The right side of the rotating shaft (42) is connected to the same pulley (43). A flat belt (45) is sleeved between the plurality of pulleys (43). The smoothing mechanism (5) includes an L-shaped rod (51), and the L-shaped rod (51) is connected to the flat belt (45); The outer stretching mechanism (6) is further provided for controlling the outward expansion of the printed film. The outer stretching mechanism (6) includes a second mounting block (61), a rotating frame (62), a torsion spring (63), a rotating block (64) and a blowing assembly. The inner front portion of the mounting plate (41) is connected to the second mounting block (61). The second mounting block (61) is rotatably connected to the rotating frame (62). Two torsion springs (63) are connected between the rotating frame (62) and the adjacent second mounting block (61). The inner end of the rotating frame (62) is rotatably connected to the rotating block (64). The box body (1) is provided with a blowing assembly for blowing the rotating block (64) to rotate. The blowing assembly includes a first hollow cylinder (65), an air inlet pipe (66), an air outlet pipe (67), a piston rod (68), a second spring (69), a contact block (691), a hose (692) and a third spring (693). The upper right front portion of the box body (1) is connected to the first hollow cylinder (65). The right side of the front portion of the first hollow cylinder (65) is connected to the air inlet pipe (66) with a one-way valve. The left side of the front portion of the first hollow cylinder (65) is connected to the air outlet pipe (67) with a one-way valve. The outlet of the air outlet pipe (67) is aligned with the rotating block (64) on the right side. The first hollow cylinder (65) slides inside. A piston rod (68) is dynamically connected, a second spring (69) is connected between the piston rod (68) and the first hollow cylinder (65), a contact block (691) is slidably connected to the rear of the piston rod (68), the L-shaped rod (51) rotates to contact the contact block (691), a hose (692) with a one-way valve is connected to the front of the upper side of the box body (1), the right end of the hose (692) is connected to the front side of the first hollow cylinder (65), the left end outlet of the hose (692) is aligned with the left rotating block (64), and a third spring (693) is connected between the contact block (691) and the piston rod (68).

2. The water-based ink drying device for flexible packaging gravure printing film according to claim 1, characterized in that: The smoothing mechanism (5) further comprises a guide rod (52), a smoothing roller (53), a first mounting block (54), a sliding block (55) and a first spring (56), wherein the right side of the left mounting plate (41) is connected to the guide rod (52), the upper portion of the guide rod (52) is slidably connected to the smoothing roller (53), the right portion of the smoothing roller (53) is connected to the first mounting block (54), the upper and lower portions of the first mounting block (54) are both slidably connected to the sliding block (55), the L-shaped rod (51) rotates to contact the sliding block (55), and the first spring (56) is connected between the sliding block (55) and the first mounting block (54).

3. The water-based ink drying device for flexible packaging gravure printing film according to claim 2, characterized in that: The invention also includes a preheating mechanism (7) for preheating the printed film. The preheating mechanism (7) includes a placement plate (71), a frame (72) and a first connecting pipe (73). The left and right parts of the rear side of the box (1) are both connected to the placement plate (71). The frame (72) is placed between the left and right placement plates (71). The first connecting pipe (73) is connected between the frame (72) and the rear side of the box (1).

4. The water-based ink drying device for flexible packaging gravure printing film according to claim 3, characterized in that: The fixing mechanism (8) is further provided for fixing the box body (1). The fixing mechanism (8) includes a square plate (81), a fixing plate (82) and a screw (83). The lower outer portion of the mounting plate (41) is connected to the square plate (81). The fixing plate (82) is slidably connected to the square plate (81). The rear portion of the square plate (81) is connected to the screw (83) by a thread. The inner end of the screw (83) is rotatably connected to the adjacent fixing plate (82).

5. The water-based ink drying device for flexible packaging gravure printing film according to claim 4, characterized in that: The printing device further comprises a clamping mechanism (9) for clamping the printing device, wherein the clamping mechanism (9) comprises a third mounting block (91), a rotating plate (92), a second hollow cylinder (93) and a second connecting tube (94). The left and right sides of the frame (72) are both connected to the third mounting blocks (91), the outer ends of the third mounting blocks (91) are both rotatably connected to the rotating plate (92), the left rotating plate (92) is connected to the second hollow cylinder (93), the right end of the second hollow cylinder (93) contacts the right rotating plate (92), the upper left side of the frame (72) is connected to the second connecting tube (94), and the tail end of the second connecting tube (94) is connected to the left side of the second hollow cylinder (93).

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