Drying mechanism for PET film composite paper printing

Abstract

The utility model relates to PET film composite paper drying technical field, concretely is a kind of for PET film composite paper printing drying mechanism, it includes: air outlet box, the air outlet box both sides are connected in support frame by connecting rod, support frame is located PET film composite paper main body both sides, air outlet box is symmetrically provided with two in up and down, PET film composite paper main body is located between the air outlet of two air outlet boxes;Air outlet box is provided with baffle assembly;The sealable design of air outlet box air outlet is realized by baffle assembly, when equipment shutdown, baffle can completely cover air outlet and abut against sealing pad layer, effectively block the dust in air into air outlet inside and air duct, avoid the problem that traditional equipment is caused by dust accumulation and leads to air outlet passage obstruction, hot air uniformity drop, prevent dust from adhering to PET film composite paper surface pollution printing layer under the action of hot air simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of PET film composite paper drying technology, specifically a drying mechanism for printing PET film composite paper. Background Technology

[0002] PET film composite paper (i.e., a substrate made by combining PET film and paper through a composite process) combines the water resistance, scratch resistance, and high gloss of PET film with the stiffness and ease of processing of paper, making it a commonly used material in packaging, labeling, and promotional materials. Its printing quality directly affects the appearance and functionality of the product.

[0003] Chinese patent document CN221000361U discloses a composite paperboard drying device, relating to the field of composite paperboard production and drying technology. The device includes composite paperboard, a box body, a roller clamping assembly, an air outlet plate, a heating element, and an air inlet device. The composite paperboard extends into the box body, with both ends positioned within the roller clamping assembly, which is located on both sides of the box body. The air outlet plate and heating element are both installed inside the box body, located on both sides of the composite paperboard. The air outlet plate has several air outlets, and the heating element is located on one side of the air outlet plate. The air inlet device is installed on both sides of the box body and connected to it, with the air inlet device located on one side of the heating element. The composite paperboard drying device also includes a lifting device, with one end connected to the air outlet plate and the other end connected to the box body. The air outlet plate is movably connected to the box body, and the lifting device can drive the air outlet plate to move up and down within the box body. This invention can adjust the distance between the air outlet and the composite paperboard, ensuring uniform airflow and stable temperature, avoiding heat damage, and improving the quality of the finished composite paperboard.

[0004] However, in the above-mentioned solutions and existing technologies, the PET film composite paper is dried by hot air circulation after printing. The air outlet box is arranged symmetrically from top to bottom, and the PET film composite paper is suspended and transported, eliminating the risk of contact scratches and meeting the needs of high-precision printing. However, the air outlet of the air outlet box needs to be exposed to the production environment for a long time. When the equipment is stopped, dust in the air can easily accumulate inside the air outlet and in the air duct. This accumulated dust will not only block the air outlet channel after the equipment is restarted, causing a decrease in the uniformity of hot air output, resulting in problems such as drying temperature fluctuations and incomplete drying in some areas, but may also adhere to the surface of the PET film composite paper under the action of hot air, contaminating the printed layer.

[0005] Therefore, this utility model proposes a drying mechanism for printing PET film composite paper to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a drying mechanism for printing PET film composite paper, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a drying mechanism for printing PET film composite paper, comprising: an air outlet box, the two sides of which are connected to a support frame via connecting rods, the support frame being located on both sides of the PET film composite paper body, two air outlet boxes being arranged symmetrically vertically, the PET film composite paper body being located between the air outlets of the two air outlet boxes; a hot air conveying pipe is connected to the end wall of the air outlet box, the other end of which is connected to the output end of a hot air blower, and a baffle assembly is provided on the air outlet box.

[0008] Preferably, the baffle assembly includes a sealing gasket layer, a rotating plate, a rotating shaft, a baffle, a guide plate, a limiting plate, a deflector, a stop rod, and a limiting post; the sealing gasket layer is connected to the air outlet end wall of the air outlet box, and a boss is connected to the side wall of the air outlet box; the rotating plate is rotatably connected to the boss via the rotating shaft.

[0009] Preferably, a baffle is connected to the bottom wall of the rotating plate, and a guide plate is connected to the end wall of the baffle. The guide plate is arc-shaped, and the arc-shaped outer wall of the guide plate is close to the PET film composite paper body.

[0010] Preferably, after the baffle rotates, it presses against the sealing gasket layer, the baffle covers the air outlet of the air box, a limiting plate is inclinedly connected to the side wall of the air box, the side wall of the limiting plate is attached to the side wall of the rotating plate, and a lever is connected to one end of the rotating shaft.

[0011] Preferably, the top of the dial plate has a straight groove, and the bottom wall of the dial plate is threadedly connected to a knob screw. The end of the knob screw extends into the straight groove and is rotatably connected to a stop rod, which is movably inserted into the straight groove.

[0012] Preferably, the end of the abutment is arc-shaped, a protrusion is connected to the side wall of the boss, a limit post is connected to the side wall of the protrusion, and the side wall of the abutment is in contact with the limit post.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The baffle assembly enables a sealable design for the air outlet of the air box. When the equipment is stopped, the baffle can completely cover the air outlet and press against the sealing gasket, effectively preventing dust in the air from entering the air outlet and the air duct. This avoids the problems of air outlet blockage and reduced uniformity of hot air caused by dust accumulation in traditional equipment. At the same time, it prevents dust from adhering to the surface of the PET film composite paper and contaminating the printing layer under the action of hot air. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the air outlet box structure in the air outlet state of this utility model; Figure 3 This is a schematic diagram of the air outlet box of this utility model in the air-stopped state; Figure 4 This utility model Figure 3 A magnified view of a portion of the image; Figure 5 This is a half-sectional view of the connecting plate structure of this utility model.

[0015] In the diagram: 1. Air outlet box; 2. Support frame; 3. PET film composite paper body; 4. Hot air conveying pipe; 5. Sealing gasket; 6. Boss; 7. Rotating plate; 8. Rotating shaft; 9. Baffle; 10. Guide plate; 11. Limiting plate; 12. Toggle plate; 13. Straight groove; 14. Knob screw; 15. Support rod; 16. Protrusion; 17. Limiting post. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Please see Figures 1-5 This utility model provides a technical solution: a drying mechanism for printing PET film composite paper, comprising: an air outlet box 1, the two sides of the air outlet box 1 being connected to a support frame 2 via connecting rods, the support frame 2 being located on both sides of the PET film composite paper body 3, two air outlet boxes 1 being arranged symmetrically in the upper and lower positions, the PET film composite paper body 3 being located between the air outlets of the two air outlet boxes 1; a hot air conveying pipe 4 being connected to the end wall of the air outlet box 1, the other end of the hot air conveying pipe 4 being connected to the output end of a hot air blower, and a baffle assembly being provided on the air outlet box 1.

[0018] The support frame 2 is set on both sides of the PET film composite paper body 3 to provide stable support for the air outlet box 1. There are two air outlet boxes 1 arranged symmetrically at the top and bottom, and the PET film composite paper body 3 is located between the air outlets of the two air outlet boxes 1, so as to ensure that the hot air blown out by the upper and lower air outlet boxes 1 can be evenly applied to both sides of the PET film composite paper body 3.

[0019] The sealing gasket 5 in the baffle assembly is connected to the air outlet end wall of the air outlet box 1, and a boss 6 is connected to the side wall of the air outlet box 1. The rotating plate 7 is rotatably connected to the boss 6 through the rotating shaft 8.

[0020] The hot air generated by the hot air blower can be stably delivered to the air outlet box 1 through the hot air delivery pipe 4; the sealing gasket 5 is made of elastic wear-resistant material and is fixedly connected to the end wall of the air outlet of the air outlet box 1 to enhance the sealing effect; the rotating plate 7 is rotatably connected to the boss 6 through the rotating shaft 8, and the rotating plate 7 can rotate flexibly around the rotating shaft 8.

[0021] A baffle 9 is connected to the bottom wall of the rotating plate 7, and a guide plate 10 is connected to the end wall of the baffle 9. The guide plate 10 is arc-shaped, and the arc-shaped outer wall of the guide plate 10 is close to the PET film composite paper body 3.

[0022] The end wall of the baffle 9 is integrally formed or bonded to a guide plate 10. The guide plate 10 has an overall arc-shaped structure design. When the equipment is running, the arc-shaped outer wall of the guide plate 10 is close to the PET film composite paper body 3 to achieve the function of hot air guidance. When the equipment is stopped, the baffle 9 can rotate around the rotating shaft 8 to the position of pressing against the sealing gasket 5. At this time, the baffle 9 completely covers the air outlet of the air box 1, forming a sealed protection.

[0023] After the baffle 9 rotates, it presses against the sealing gasket 5. The baffle 9 covers the air outlet of the air box 1. A limiting plate 11 is inclinedly connected to the side wall of the air box 1. The side wall of the limiting plate 11 is attached to the side wall of the rotating plate 7. A lever 12 is connected to one end of the rotating shaft 8.

[0024] The top of the dial plate 12 is provided with a straight groove 13, and the bottom wall of the dial plate 12 is threadedly connected with a knob screw 14. The end of the knob screw 14 extends into the straight groove 13 and is rotatably connected with a stop rod 15. The stop rod 15 is movably inserted into the straight groove 13.

[0025] By moving the lever 12, the rotating shaft 8 and the rotating plate 7 can be driven to rotate synchronously. The side wall of the limiting plate 11 is attached to the side wall of the rotating plate 7, limiting the rotation position of the rotating plate 7. The top of the lever 12 is provided with a straight groove 13 extending along its length direction. The bottom wall of the lever 12 is provided with a threaded hole communicating with the straight groove 13. A knob screw 14 is threadedly connected in the threaded hole. The end of the knob screw 14 extends into the straight groove 13 and is rotatably connected to the abutment rod 15 through a bearing. The abutment rod 15 is movably inserted into the straight groove 13 and can slide along the length direction of the straight groove 13.

[0026] The end of the abutment 15 is arc-shaped, and a protrusion 16 is connected to the side wall of the boss 6. A limiting post 17 is connected to the side wall of the protrusion 16, and the side wall of the abutment 15 is in contact with the limiting post 17.

[0027] A limiting post 17 is welded or integrally formed on the side wall of the protrusion 16. When the baffle 9 is in a fixed state, the side wall of the abutment 15 is in close contact with the limiting post 17, thereby limiting the rotation of the rotating plate 7.

[0028] Working principle: When the drying process is started, external force is first applied through the dial plate 12, which drives the rotating shaft 8 to rotate around the boss 6. The rotating plate 7, which is fixedly connected to the rotating shaft 8, rotates synchronously, thereby driving the baffle 9 and the guide plate 10 on the bottom wall of the rotating plate 7 to rotate. After the side wall of the limiting plate 11 is in contact with the side wall of the rotating plate 7, restricting the rotating plate 7 from rotating to the left, the arc-shaped outer wall of the guide plate 10 is close to the PET film composite paper body 3. Rotating the knob screw 14 on the bottom wall of the dial plate 12 causes the knob screw 14 to move axially along the threaded hole because it is threadedly connected to the dial plate 12. Its end, which extends into the straight groove 13, pushes the abutment 15 to slide along the straight groove 13. Until the side wall of the stop bar 15 is in close contact with the right side wall of the limiting post 17 on the protrusion 16, the rotating plate 7 is restricted from rotating to the right, thereby locking the positions of the dial plate 12, the rotating shaft 8 and the baffle 9, preventing the baffle 9 from shifting due to hot air flow or vibration during the drying process; the hot air blower is started, and the hot air generated by the hot air blower is delivered to the upper and lower symmetrical air outlet boxes 1 through the hot air conveying pipe 4, and the hot air is blown out from the air outlet of the air outlet box 1; at this time, the arc-shaped guide plate 10 guides the hot air, changes the diffusion direction of the hot air, and blows it in a concentrated and uniform manner towards the PET film composite paper body 3 located between the two air outlet boxes 1, so as to efficiently dry the printing layer.

[0029] After the drying operation is completed, turn off the hot air blower and stop the hot air delivery. At this time, the air outlet of the air box 1 needs to be sealed to prevent dust. The operator rotates the knob screw 14 in the opposite direction. The knob screw 14 drives the abutment 15 to slide along the straight groove 13 away from the limit post 17 until the abutment 15 is completely separated from the limit post 17, releasing the lock of the lever plate 12. Move the lever plate 12 towards the air outlet of the air box 1. The lever plate 12 drives the rotating shaft 8, the rotating plate 7 and the baffle 9 to rotate. When the baffle 9 rotates to a position where it is tightly sealed against the end wall of the air outlet of the air box 1... When the sealing layer 5 comes into contact, continue to apply a slight external force so that the baffle 9 completely covers the air outlet of the air box 1 and is tightly pressed against the sealing layer 5; turn the knob screw 14 again to push the push rod 15 to slide along the straight groove 13 so that the side wall of the push rod 15 is in close contact with the left side wall of the limit post 17, locking the position of the dial plate 12 and the baffle 9, ensuring that the baffle 9 always maintains a sealed state to the air outlet during equipment shutdown, effectively preventing dust in the air from entering the interior of the air box 1 and the air duct, laying the foundation for the normal operation of the next drying operation.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying mechanism for printing PET film composite paper, comprising: Air outlet box (1), the air outlet box (1) is connected to the support frame (2) on both sides by connecting rods. The support frame (2) is located on both sides of the PET film composite paper body (3). There are two air outlet boxes (1) arranged symmetrically up and down. The PET film composite paper body (3) is located between the air outlets of the two air outlet boxes (1). The feature is that: a hot air conveying pipe (4) is connected to the end wall of the air outlet box (1), the other end of the hot air conveying pipe (4) is connected to the output end of the hot air blower, and a baffle assembly is provided on the air outlet box (1).

2. The drying mechanism for printing PET film composite paper according to claim 1, characterized in that: The baffle assembly includes a sealing gasket (5), a rotating plate (7), a rotating shaft (8), a baffle (9), a guide plate (10), a limiting plate (11), a lever (12), a stop rod (15), and a limiting post (17). The sealing gasket (5) is connected to the air outlet end wall of the air outlet box (1), and a boss (6) is connected to the side wall of the air outlet box (1). The rotating plate (7) is rotatably connected to the boss (6) through the rotating shaft (8).

3. A drying mechanism for printing PET film composite paper according to claim 2, characterized in that: A baffle (9) is connected to the bottom wall of the rotating plate (7), and a guide plate (10) is connected to the end wall of the baffle (9). The guide plate (10) is arc-shaped, and the arc-shaped outer wall of the guide plate (10) is close to the PET film composite paper body (3).

4. A drying mechanism for printing PET film composite paper according to claim 3, characterized in that: After the baffle (9) rotates, it presses against the sealing gasket layer (5). The baffle (9) covers the air outlet of the air box (1). A limiting plate (11) is inclinedly connected to the side wall of the air box (1). The side wall of the limiting plate (11) is attached to the side wall of the rotating plate (7). A lever (12) is connected to one end of the rotating shaft (8).

5. A drying mechanism for printing PET film composite paper according to claim 4, characterized in that: The top of the dial plate (12) is provided with a straight groove (13), and the bottom wall of the dial plate (12) is threadedly connected with a knob screw (14). The end of the knob screw (14) extends into the straight groove (13) and is rotatably connected with a stop rod (15). The stop rod (15) is movably inserted into the straight groove (13).

6. A drying mechanism for printing PET film composite paper according to claim 5, characterized in that: The end of the abutment (15) is arc-shaped, and a protrusion (16) is connected to the side wall of the boss (6). A limit post (17) is connected to the side wall of the protrusion (16), and the side wall of the abutment (15) is in contact with the limit post (17).

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