Disposable paper cup processing and laminating device

Abstract

The utility model belongs to the technical field of paper cup processing, and particularly relates to a disposable paper cup processing and laminating device which comprises a spraying box, a conveying roller and two calendaring rollers which are arranged at intervals from left to right, the conveying roller is parallel to the two calendaring rollers, the two calendaring rollers are vertically and symmetrically distributed, and a calendaring cavity is formed between the two calendaring rollers. Two alloy square pipes are arranged at the position, close to the spraying box, of the calendaring cavity, the upper ends of the two alloy square pipes obliquely upwards deviate from the calendaring roller and are of a closed structure, the sides, away from each other, of the two alloy square pipes communicate with air outlet nozzles, and air inlets of the two air outlet nozzles communicate with air supply mechanisms; baffle plates deviating from the calendaring roller are obliquely and downwards fixed to the lower edges of the two alloy square pipes, the two ends of the two baffle plates are bent upwards, and oblique air channels which are obliquely upward are formed in the two alloy square pipes and face the middle of the calendaring roller. According to the utility model, redundant coating liquid is blown off from two sides of paper by utilizing airflow, so that friction with the paper is avoided, and the two sides of the paper are prevented from being wrinkled or scratched.

Description

Technical Field

[0001] The utility model belongs to the technical field of paper cup processing, and particularly relates to a disposable paper cup processing and laminating device. Background Art

[0002] Disposable paper cups are made from paper through a process of printing, laminating, die-cutting, and hot-pressing. The laminating step involves feeding the base paper into a laminating machine, where a layer of polyethylene (PE) film is applied to the surface. This step is the core of the laminating process, ensuring the inner surface of the paper cup is water- and oil-resistant.

[0003] During the paper laminating process, plastic particles or coatings are mixed into a laminating solution in appropriate proportions. This solution is then evenly applied to the paper surface using a nozzle and then dried. Prior to drying, the paper is fed between two calender rollers, where the squeezing action helps spread the solution evenly.

[0004] When paper is continuously conveyed, two calendering rollers are used to continuously squeeze and flatten the coating liquid on the surface of the paper. However, there is a lot of coating liquid in the two calendering rollers, and the excess coating liquid on both sides of the paper is scraped off by a scraper, causing the two sides of the paper to be rubbed by the scraper, which reduces safety and easily causes wrinkles or scratches on both sides of the paper. Utility Model Content

[0005] The utility model aims to provide a disposable paper cup laminating device, which can use airflow to blow off excess laminating liquid on both sides of paper without causing friction with the paper, thereby preventing wrinkles or scratches on both sides of the paper.

[0006] The technical solutions adopted by this utility model are as follows:

[0007] A disposable paper cup processing and coating device comprises a spray box, a conveyor roller and two calendering rollers arranged at intervals from left to right, the conveyor roller is parallel to the two calendering rollers, the two calendering rollers are vertically symmetrically distributed and a calendering cavity is provided between them, two alloy square tubes are provided in the calendering cavity near the spray box, the upper ends of the two alloy square tubes are obliquely upward away from the calendering rollers and are in a closed structure, the two alloy square tubes are connected to an air outlet on one side away from each other, the air inlets of the two air outlets are connected to an air supply mechanism, and the lower edges of the two alloy square tubes are fixed with a baffle obliquely downward away from the calendering rollers. Both ends of the two baffles are bent upward, and the prepared coating liquid is evenly sprayed onto the upper surface of the paper. The conveyor roller drives the paper forward for continuous coating, and the two calendering rollers are used to squeeze the paper coated with the coating liquid so that the coating liquid is spread flat on the paper, and the excess coating liquid is pushed toward both sides of the paper. At the same time, air is supplied and the alloy square tube is used to guide the airflow to flow downward on both sides of the paper, blowing off the excess coating liquid without friction with the paper. The whole process is highly safe and prevents wrinkles or scratches on both sides of the paper. The airflow carrying the coating liquid is then guided obliquely downward to deviate from the calendering roller through the baffle for easy collection.

[0008] As a preferred solution, the inside of the two alloy square tubes are provided with an upward inclined air duct toward the middle of the calendering roller. The inclined air duct is used to guide the airflow to move horizontally for a certain distance inside the alloy square tube, which can diffuse to the entire interior of the alloy square tube, increase the air outlet area, and cover as much excess laminating liquid as possible, especially since these laminating liquids have a certain lateral movement inertia, reducing the leakage of laminating liquid.

[0009] As a preferred solution, a plurality of vertical plates are fixed at intervals along a straight line inside the two alloy square tubes, and the upper ends of the vertical plates extend into the inclined air duct. The interior of the alloy square tube can be divided into vertical air guide grooves, which increase gradually in order from far to near distance from the paper, so that the air flow inside the inclined air duct can enter each air guide groove successively, and the air can be distributed horizontally at multiple points without significantly increasing the weight of the alloy square tube.

[0010] As a preferred solution, a waste barrel is provided below the lower ends of the two baffles. The width of the two waste barrels is greater than the width of the baffles. The tail gas is blown into the waste barrel to uniformly receive the laminating liquid for recycling.

[0011] As a preferred solution, a folded flange plate is fixed on the outside of the two alloy square tubes, and a distance is left between the two flange plates and the calendering roller. Bolts are passed through the flange plates to tighten the frame, so that the two alloy square tubes can be suspended in the air. There is no need to drill screw holes on the alloy square tubes to maintain the airtightness of the alloy square tubes.

[0012] As a preferred solution, the air supply mechanism includes a hose connected to the air inlet of the air outlet nozzle. The two ports of the hose away from the air outlet are connected to the fan. The hose passes through the frame to avoid falling and pulling the air outlet nozzle. After starting the fan, air is supplied to the alloy square tube along the hose and the air outlet nozzle.

[0013] As a preferred solution, a heating lamp is arranged at intervals on the side of the upper surface of one of the calendering rollers away from the conveying roller. The heating lamp shines vertically downward. When the heating lamp is turned on, it emits heat waves toward the paper, heating the laminating liquid to quickly solidify it, so that the continuity of the paper laminating production line is better.

[0014] The technical effects achieved by this utility model are:

[0015] The utility model sprays the prepared coating liquid evenly onto the upper surface of the paper, and the conveyor roller drives the paper forward for continuous coating, and utilizes two calendering rollers to squeeze the paper coated with the coating liquid, so that the coating liquid is spread flat on the paper, and the excess coating liquid is pushed toward both sides of the paper. At the same time, air is supplied, and the alloy square tube is utilized to guide the airflow to flow downward on both sides of the paper, blowing off the excess coating liquid without friction with the paper. The whole process is highly safe and prevents wrinkles or scratches on both sides of the paper. The airflow carrying the coating liquid is then guided obliquely downward to deviate from the calendering roller through the deflector for easy collection.

[0016] The utility model utilizes an inclined air duct to guide the air flow to move horizontally for a certain distance inside the alloy square tube, which can diffuse to the entire interior of the alloy square tube, increase the air outlet area, and cover excess laminating liquid as much as possible, especially since these laminating liquids have a certain inertia of horizontal movement, thereby reducing the leakage of laminating liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a disposable paper cup processing and laminating device of the utility model;

[0018] Figure 2 This is a perspective plan view of a disposable paper cup processing and laminating device of the utility model;

[0019] Figure 3 It is a rear view of the alloy square tube of the present utility model;

[0020] Figure 4 It is a cross-sectional view of the alloy square tube of the present utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0022] 1. Spray box; 2. Conveyor roller; 3. Calender roller; 4. Alloy square tube; 5. Air outlet nozzle; 6. Baffle; 7. Inclined air duct; 8. Vertical plate; 9. Waste barrel; 10. Flange plate; 11. Hose; 12. Fan; 13. Heat lamp. DETAILED DESCRIPTION

[0023] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0024] like Figure 1-Figure 4 As shown, a disposable paper cup processing and coating device includes a frame and a control panel fixed to the outside of the frame, and also includes a spray box 1, a conveyor roller 2 and two calendering rollers 3 arranged at intervals from left to right. The conveyor roller 2 and the two calendering rollers 3 are rotatably mounted on the frame through bearings and are rotated by a first motor and a second motor respectively. The conveyor roller 2 is parallel to the two calendering rollers 3, and the two calendering rollers 3 are vertically symmetrically distributed with a calendering cavity provided therebetween. Two alloy square tubes 4 are provided in the calendering cavity near the spray box 1. The spray box 1 and the two alloy square tubes 4 are fixed to the frame by bolts. The upper ends of the two alloy square tubes 4 are obliquely upward away from the calendering rollers 3 and are in a closed structure. The two alloy square tubes 4 are connected to an air outlet 5 on the side away from each other, and the air inlets of the two air outlet nozzles 5 are connected to an air supply mechanism. The lower edges of the two alloy square tubes 4 are obliquely fixed with a baffle 6 facing away from the calendering rollers 3, and both ends of the two baffles 6 are bent upward.

[0025] In the material preparation stage, the cleaned paper roll is unwound, and the head passes under the spray box 1, the upper surface of the conveyor roller 2, and is inserted into the calendering cavity between the two calendering rollers 3. This section of paper is used for material running and trial start-up.

[0026] During the laminating stage, multiple nozzles under the spray box 1 are opened to evenly spray the prepared laminating liquid onto the upper surface of the paper. The conveyor roller 2 drives the paper forward for continuous lamination, and two calendering rollers 3 are used to squeeze the paper coated with the laminating liquid so that the laminating liquid is flattened on the paper and the excess laminating liquid is pushed toward both sides of the paper. At the same time, the air supply mechanism is started to supply air along the air outlet 5 toward the two alloy square tubes 4. The alloy square tubes 4 are used to guide the airflow to flow downward on both sides of the paper, blowing off the excess laminating liquid without friction with the paper. The whole process is highly safe and prevents wrinkles or scratches on both sides of the paper. The airflow carrying the laminating liquid is then guided obliquely downward by the deflector 6 to deviate from the calendering roller 3 for easy collection.

[0027] In particular, the alloy square tube 4 and the baffle 6 are arranged in a "V" shape, and the connection between the two can be close to the calendering cavity to receive as much excess laminating liquid as possible. Moreover, the surface of the baffle 6 is coated with an anti-stick coating, which almost does not retain the laminating liquid. Under the action of airflow, the laminating liquid can flow down smoothly.

[0028] Refer to the attached Figure 2 and Figure 4Both alloy square tubes 4 are provided with an upward inclined air duct 7 toward the middle of the calendering roller 3. The inclined air duct 7 is used to guide the airflow to move horizontally for a certain distance inside the alloy square tube 4, and can diffuse to the entire alloy square tube 4, thereby increasing the air outlet area and covering as much excess laminating liquid as possible. In particular, these laminating liquids have a certain lateral movement inertia, which reduces the leakage of laminating liquid.

[0029] Refer to the attached Figure 3 and Figure 4 , a plurality of vertical plates 8 are fixed along a straight line inside the two alloy square tubes 4, and the number of vertical plates 8 is set to 3 to 8. First, when the number is 3, the weight of the alloy square tube 4 is not significantly increased. When the number is 8, the interior of the alloy square tube 4 is divided into more air guide grooves for refining the airflow. In this embodiment, four vertical plates 8 are preferably used, and both sides of the vertical plates 8 are welded to the inner wall of the alloy square tube 4. The upper ends of the vertical plates 8 extend into the inclined air duct 7, which can divide the interior of the alloy square tube 4 into five vertical air guide grooves, which increase gradually in order from far to near the distance from the paper, so that the airflow inside the inclined air duct 7 can enter each air guide groove one after another, and can be distributed horizontally at multiple points without significantly increasing the weight of the alloy square tube 4.

[0030] Refer to the attached Figure 1 and Figure 2 A waste barrel 9 is provided below the lower end of the two baffles 6. The two waste barrels 9 are fixed inside the frame by iron wire. The width of the two waste barrels 9 is greater than the width of the baffle 6. The exhaust gas is blown into the waste barrel 9 to uniformly receive the laminating liquid. The waste barrel 9 can be removed after it is full, and the laminating liquid can be recovered for reuse, which is better. The waste barrel 9 is empty.

[0031] Refer to the attached Figure 2 、 Figure 3 and Figure 4 The two alloy square tubes 4 are fixed with folded flange plates 10 on the outside by bolts. The two flange plates 10 are spaced apart from the calendering roller 3. The frame is tightened by passing bolts through the flange plates 10, which makes it convenient for the two alloy square tubes 4 to be suspended in the air. There is no need to drill screw holes on the alloy square tubes 4, thereby maintaining the airtightness of the alloy square tubes 4.

[0032] Refer to the attached Figure 1 and Figure 4 The air supply mechanism includes a hose 11 connected to the air inlet of the air outlet nozzle 5. The ports of the two hoses 11 away from the air outlet nozzle 5 are connected to the fan 12. The two fans 12 are both located on the ground and controlled by a control panel. The hose 11 passes through the frame to avoid falling and pulling the air outlet nozzle 5. After starting the fan 12, air is supplied to the alloy square tube 4 along the hose 11 and the air outlet nozzle 5.

[0033] Refer to the attached Figure 1 and Figure 2A heating lamp 13 is arranged on the upper surface of a calender roller 3 away from the side of the conveying roller 2. Both ends of the heating lamp 13 are fixed inside the frame by screws. The heating lamp 13 is connected to the control panel through a relay signal. The heating lamp 13 irradiates vertically downward. When the heating lamp 13 is started, it emits heat waves toward the paper, heating the laminating liquid to quickly solidify it, so that the continuity of the paper laminating production line is better.

[0034] The working principle of the utility model is as follows: when working, the paper roll is unwound and sequentially passes under the spray box 1, the upper surface of the conveying roller 2, and is inserted into the calendering cavity between the two calendering rollers 3.

[0035] Open multiple nozzles under the spray box 1 and spray the prepared coating liquid evenly onto the upper surface of the paper. The conveyor roller 2 drives the paper forward for continuous coating, and uses two calendering rollers 3 to squeeze the paper coated with the coating liquid so that the coating liquid is flattened on the paper and the excess coating liquid is pushed toward both sides of the paper. At the same time, start the air supply mechanism to supply air along the air outlet 5 toward the two alloy square tubes 4. Use the alloy square tubes 4 to guide the air flow to flow downward on both sides of the paper, blow off the excess coating liquid, and do not rub against the paper. The whole process is highly safe and prevents wrinkles or scratches on both sides of the paper. The airflow carrying the coating liquid is then guided obliquely downward by the deflector 6 to deviate from the calendering roller 3 for easy collection.

[0036] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A disposable paper cup coating device, comprising a spray box (1), a conveying roller (2) and two calendering rollers (3) arranged at intervals from left to right, wherein the conveying roller (2) is parallel to the two calendering rollers (3), characterized in that: The two calendering rollers (3) are vertically symmetrically distributed and two alloy square tubes (4) are arranged between them near the spray box (1). The upper ends of the two alloy square tubes (4) are inclined upward and away from the calendering rollers (3) and are in a closed structure. The two alloy square tubes (4) are connected to an air outlet (5) on the side away from each other. The air inlets of the two air outlets (5) are connected to an air supply mechanism. The lower edges of the two alloy square tubes (4) are fixed with a baffle (6) away from the calendering rollers (3) at an inclined downward direction, and both ends of the two baffles (6) are bent upward.

2. The disposable paper cup coating device according to claim 1, characterized in that: The interiors of the two alloy square tubes (4) are each provided with an upwardly inclined air duct (7) toward the middle of the calendering roller (3).

3. The disposable paper cup coating device according to claim 2, characterized in that: A plurality of vertical plates (8) are fixed at intervals along a straight line inside the two alloy square tubes (4), and the upper ends of the vertical plates (8) extend into the inclined air duct (7).

4. The disposable paper cup processing and laminating device according to claim 1, characterized in that: A waste bucket (9) is provided below the lower ends of the two baffles (6), and the width of the two waste buckets (9) is greater than the width of the baffles (6).

5. The disposable paper cup processing and laminating device according to claim 1, characterized in that: A folded flange plate (10) is fixed to the outside of the two alloy square tubes (4), and a distance is left between the two flange plates (10) and the calendering roller (3).

6. The disposable paper cup processing and laminating device according to claim 1, characterized in that: The air supply mechanism comprises a hose (11) connected to the air inlet of the air outlet nozzle (5), and two ports of the hose (11) away from the air outlet nozzle (5) are both connected to a fan (12).

7. The disposable paper cup coating device according to claim 1, characterized in that: A heating lamp (13) is provided at intervals on one side of the upper surface of the calendering roller (3) away from the conveying roller (2), and the heating lamp (13) is irradiated vertically downward.

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