Constant-tension film laminating machine

Abstract

The utility model relates to a constant tension film laminating machine which comprises a rack, a workbench is arranged in the middle of the rack, an upper rubber roller and a lower rubber roller are arranged at the position of the workbench, a film releasing shaft and a waste collecting shaft are arranged above the workbench, an unwinding shaft and a winding shaft are arranged on the two sides of the lower portion of the workbench respectively, and a temperature measuring probe is installed on a lifting support at the end of the upper rubber roller. One end of the film shaft, one end of the waste collecting shaft, one end of the unwinding shaft and one end of the winding shaft are installed on one side of the rack through spherical bearings, and the other ends of the film shaft, the waste collecting shaft, the unwinding shaft and the winding shaft are installed on the other side of the rack through a limiting mechanism and driven by a servo motor through a gear set to rotate; the film laminating machine is provided with five servo motors which independently operate to drive the lower rubber roller, the film shaft, the waste collecting shaft, the unwinding shaft and the winding shaft to rotate, so that a film and drawing paper keep constant tension during operation, and stable film laminating quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of film laminating, in particular to a constant-tension film laminating machine. Background Art

[0002] A film laminating machine is a special equipment for paper, plates, leather, and film laminating. The film laminating machine is widely used in the production and processing of industrial products. In the printing industry: Printed products after film lamination have a thin and transparent plastic film on the surface, making the surface smoother and brighter. It not only improves the gloss and fastness of the printed products, extends the service life of the printed products, but also the plastic film plays a protective role such as waterproof, anti-fouling, wear-resistant, fold-resistant, and chemical corrosion-resistant. In the building materials industry: The back glue can be imprinted on flannelette, leather, plates, ceramic tiles, etc. The back glue imprinting process is environmentally friendly and pollution-free.

[0003] During the operation of the film laminating machine, it usually relies on tension to straighten the drawing paper and the film. In this way, the tension is prone to be uneven, resulting in defects in the film lamination. In the existing design, the temperature measuring probe is usually placed inside the glue roller, and it is impossible to directly determine the temperature on the outer surface of the glue roller. The temperature difference will affect the quality of the film lamination. Therefore, how to overcome the above-mentioned technical problems and defects has become the key problem to be solved. Summary of the Invention

[0004] The purpose of the utility model is to overcome the defects described in the background art, so as to realize a constant-tension film laminating machine. The film laminating machine is provided with five servo motors, which independently drive the lower glue roller, the film shaft, the waste material collecting shaft, the film feeding shaft, and the film winding shaft to rotate, so that the film and the drawing paper maintain a constant tension during operation, ensuring the stable quality of the film lamination.

[0005] To achieve the above-mentioned utility model purpose, the technical solution of the utility model is: A constant-tension film laminating machine, including a frame, a workbench is arranged in the middle of the frame, a glue roller and a lower glue roller are arranged at the workbench, a film feeding shaft and a waste material collecting shaft are arranged above the workbench, a film feeding shaft and a film winding shaft are respectively arranged on both sides below the workbench. A temperature measuring probe is installed on the lifting bracket at the end of the upper glue roller. The end of the lower glue roller is connected to a reducer through a synchronous belt. One end of the film shaft, the waste material collecting shaft, the film feeding shaft, and the film winding shaft is installed on one side of the frame through a spherical bearing, and the other end is installed on the other side of the frame through a limiting mechanism, and is driven to rotate by a servo motor through a gear set. A cutter bar is arranged at the rear side above the workbench, and a transversely movable cutting knife is installed on the cutter bar.

[0006] Further, the frame includes a left bracket and a right bracket, and the middle parts of the left bracket and the right bracket are fixedly connected by the workbench.

[0007] Further, the lifting bracket includes a slide rail, a sliding seat, and a cylinder. The end of the upper glue roller is connected to the sliding seat. The sliding seat is slidably connected to two slide rails. The free end of the cylinder is fixedly connected to the upper end of the sliding seat.

[0008] Further, there are two sets of price increase brackets, which are respectively arranged at both ends of the gluing roller. The two cylinders operate independently and are respectively connected with precision pressure regulating valves.

[0009] Further, a vertical hole is formed in the side wall of the left bracket, and a temperature measuring probe is arranged outside the vertical hole. The temperature measuring probe faces the direction of the gluing roller, and the temperature measuring probe is fixedly connected with the sliding seat through a connecting frame.

[0010] Further, a belt pulley is installed at one end of the lower gluing roller. The belt pulley is connected with the belt pulley on the output shaft of the speed reducer through a synchronous belt, and the speed reducer is driven by a motor.

[0011] Further, the two gears of the gear set are respectively installed at the ends of the output shafts of the film shaft and the servo motor, and an open slot is formed at the position outside the film roller on the right bracket.

[0012] Further, the limiting mechanism includes a folded plate and a limiting cylinder. The bent part of the folded plate is hinged on the side wall of the right bracket below the gear set, and the limiting cylinder is arranged below the lower end of the folded plate.

[0013] The beneficial effects of the constant tension film laminating machine of the utility model are as follows:

[0014] 1. The lower gluing roller, film shaft, waste material collecting shaft, film feeding shaft and film winding shaft of the film laminating machine are independently controlled by 5 servo motors; the power of the lower gluing roller is provided by the motor through the speed reducer, synchronous belt and belt pulley, with low noise and precise control; the film shaft, waste material collecting shaft, film feeding shaft and film winding shaft are provided with power / resistance by the motor through the speed reducer and gears. The small module gears can be used for 360-degree meshing without direction positioning.

[0015] 2. Based on the precise torque control ability of the servo motor, the servo motor controls the constant tension. The material diameters of each shaft are calculated through software algorithms, so as to control the force or pressure of the mechanical system. As the size of the roll diameter changes during film lamination, the motor torque is adjusted at all times to meet the requirement of constant tension.

[0016] 3. The temperature measuring probe automatically rises and falls with the gluing roller through the mechanical structure, ensuring that the temperature of the gluing roller is always consistent.

[0017] 4. The film laminating pressure is precise. The bearing positions at both ends of the gluing roller are connected by two independent cylinders, and the uniform pressure of the film laminating material is ensured through the precision pressure regulating valve.

[0018] 5. Each independent servo motor can rotate forward and backward, making the operation more convenient and user-friendly. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the constant tension film laminating machine of the utility model;

[0020] Figure 2 is Figure 1 the left view of;

[0021] Figure 3 is the structural schematic diagram of the constant-tension film laminating machine of the present utility model;

[0022] Figure 4 is Figure 3 the right view of;

[0023] Figure 5 is Figure 3 the sectional view of;

[0024] Figure 6 is Figure 1 the rear view of;

[0025] In the figure: 1 - left support, 2 - frame, 3 - right support, 4 - workbench, 5 - waste collecting shaft, 6 - glue applying roller, 7 - first guide rod, 8 - second guide rod, 9 - film unwinding shaft, 10 - film feeding shaft, 11 - third guide rod, 12 - fourth guide rod, 13 - film winding shaft, 14 - cutter, 15 - lower glue applying roller, 16 - sliding seat, 17 - temperature measuring probe, 18 - speed reducer, 19 - synchronous belt, 20 - servo motor, 21 - gear set, 22 - folded plate, 23 - limit cylinder, 24 - cutter bar. Specific embodiments

[0026] The constant-tension film laminating machine of the present utility model will be described in more detail below with reference to the accompanying drawings and through specific embodiments.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0028] Refer to Figures 1-6 , a constant-tension film laminating machine in this embodiment, which is provided with five servo motors, independently operating to drive the lower glue applying roller, film shaft, waste collecting shaft, film unwinding shaft and film winding shaft to rotate, so that when the film and drawing paper are running, a constant tension is maintained, ensuring the stable quality of film lamination. It mainly includes a frame 2, and a workbench 4 is arranged in the middle of the frame 2. The frame 2 includes a left support 1 and a right support 3, and the middle parts of the left support 1 and the right support 3 are fixedly connected by the workbench 4.

[0029] See in detail Figures 1-2 and Figure 6, a sizing roller 6 and a lower sizing roller 15 are arranged at the workbench 4. The drawing paper passes between the upper sizing roller 6 and the lower sizing roller 15 for hot pressing and laminating treatment. A film feeding shaft 10 and a waste collecting shaft 5 are arranged above the workbench 4. A film unwinding shaft 9 and a film winding shaft 13 are respectively arranged on both sides below the workbench. The end of the upper sizing roller 6 is connected to the left support 1 and the right support 3 on both sides of the frame 2 through a lifting bracket. The lifting bracket includes a slide rail, a slide block 16 and a cylinder. The end of the upper sizing roller 6 is connected to the slide block 16. The slide block 16 is slidably connected to the two slide rails. The free end of the cylinder is fixedly connected to the upper end of the slide block 16. The two sets of lifting brackets are respectively arranged at both ends of the upper sizing roller 6. The two cylinders operate independently and are respectively connected with precision pressure regulating valves to ensure that the laminating pressure is uniform. A vertical hole is opened on the side wall of the left support 1. A temperature measuring probe 17 is arranged outside the vertical hole. The temperature measuring probe 17 faces the direction of the upper sizing roller 6 to measure and monitor the outer surface temperature of the upper sizing roller 6. The temperature measuring probe 17 is fixedly connected to the slide block 16 through a connecting frame. The temperature measuring probe automatically lifts with the upper sizing roller, so that the temperature of the sizing roller is always the same, ensuring the laminating quality.

[0030] See details Figures 3-6 , a belt pulley is installed at one end of the lower sizing roller 15. The belt pulley is connected to the belt pulley on the output shaft of the reducer 18 through a synchronous belt 19. The reducer 18 is driven by a motor. One ends of the film shaft 10, the waste collecting shaft 5, the film unwinding shaft 9 and the film winding shaft 13 are installed on one side of the left support 1 of the frame 2 through spherical bearings, and the other ends are installed on one side of the right support 3 of the frame 2 through a limiting mechanism and are driven to rotate by a servo motor 20 through a gear set 21. The two gears of the gear set 21 are respectively installed at the ends of the output shafts of the film shaft 10 and the servo motor 20. An open slot is opened on the right support 3 at the position outside the film roller 6 to facilitate the loading and unloading of the film on the film roller. The limiting mechanism includes a folded plate 22 and a limiting cylinder 23. The bent part of the folded plate 22 is hinged on the side wall of the right support 3 below the gear set 21. The limiting cylinder 23 is arranged below the lower end of the folded plate 22. A cutter bar 24 is arranged at the rear side above the workbench 4. A transversely movable cutting knife 14 is installed on the cutter bar 24.

[0031] During use, the film roll, the paper roll and the painting roll are respectively loaded onto the film shaft, the film unwinding shaft and the film winding shaft. After the drawing paper passes around the second guide rod and before the first guide rod, it reaches the workbench. After the film passes around the third guide rod, if there is waste, the waste paper is collected by the rotation of the waste collecting shaft. The film enters between the upper sizing roller and the lower sizing roller together with the drawing paper from the front side of the upper sizing roller for hot pressing and laminating. After the laminated drawing paper is cut by the cutting knife, it passes around the fourth guide rod and is collected by the rotation of the film winding shaft. During this process, the five servo motors constantly adjust the motor torque according to the change of the roll diameter to meet the requirement of constant tension.

[0032] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the art to which the present utility model pertains. Words such as "including" or "comprising" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, whether direct or indirect.

[0033] The exemplary embodiments of the present utility model have been described in detail above with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present utility model, various modifications and variations can be made to the above specific embodiments, and various combinations can be made to the technical features and structures proposed by the present utility model, without exceeding the protection scope of the present utility model.

Claims

1. A constant-tension film laminating machine, comprising a frame, a workbench is arranged in the middle of the frame, a glue-applying roller and a lower glue roller are arranged at the workbench, a film-releasing shaft and a waste-receiving shaft are arranged above the workbench, and a film-releasing reel and a film-receiving reel are respectively arranged on both sides below the workbench, and it is characterized in that: A temperature measuring probe is installed on the lifting bracket at the end of the upper glue roller. The end of the lower glue roller is connected to the reducer through a synchronous belt. One end of the film shaft, the waste material collecting shaft, the unwinding shaft and the winding shaft is installed on one side of the frame through a spherical bearing, and the other end is installed on the other side of the frame through a limiting mechanism and is driven to rotate by a servo motor through a gear set. A cutter bar is arranged at the rear side above the workbench, and a transversely movable cutting knife is installed on the cutter bar.

2. The constant-tension film laminating machine according to claim 1, wherein: The frame includes a left bracket and a right bracket, and the middle parts of the left bracket and the right bracket are fixedly connected by a workbench.

3. The constant-tension film laminating machine according to claim 1, wherein: The lifting bracket includes a slide rail, a slide seat and a cylinder. The end of the upper glue roller is connected to the slide seat. The slide seat is slidably connected to the two slide rails, and the free end of the cylinder is fixedly connected to the upper end of the slide seat.

4. The constant-tension film laminating machine according to claim 3, wherein: There are two groups of the lifting brackets, which are respectively arranged at both ends of the upper glue roller. The two cylinders operate independently and are respectively connected with precision pressure regulating valves.

5. The constant-tension film laminating machine according to claim 2, wherein: A vertical hole is opened on the side wall of the left bracket, and a temperature measuring probe is arranged outside the vertical hole. The temperature measuring probe faces the direction of the upper glue roller, and the temperature measuring probe is fixedly connected to the slide seat through a connecting frame.

6. The constant-tension film laminating machine according to claim 1, wherein: A pulley is installed at one end of the lower glue roller, and the pulley is connected to the pulley on the output shaft of the reducer through a synchronous belt. The reducer is driven by a motor.

7. The constant-tension film laminating machine according to claim 1, wherein: The two gears of the gear set are respectively installed at the end parts of the output shafts of the film shaft and the servo motor, and an open slot is opened at the position outside the film roller on the right bracket.

8. The constant-tension film laminating machine according to claim 1, wherein: The limiting mechanism includes a folded plate and a limiting cylinder. The bent part of the folded plate is hinged on the side wall of the right bracket below the gear set, and the limiting cylinder is arranged below the lower end of the folded plate.

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