A uniform gluing equipment for composite film

Abstract

The present application relates to the technical field of film gluing, and discloses a uniform gluing device for composite film, which comprises a film conveying frame, a gluing roller, a glue tank and a balance glue supplementing tank, the gluing roller is rotatably arranged in the film conveying frame, the glue tank is arranged directly above the gluing roller, a gluing surface is arranged on the lower end of the glue tank and is in close contact with the gluing roller, a discharge hole is arranged on the gluing surface, the upper part of the liquid level in the glue tank is connected with an air pump through an air extraction pipe, a valve is arranged on the air extraction pipe, and the balance glue supplementing tank is connected with the glue tank through a glue pipe to realize dynamic balance of the liquid level in the glue tank. The gluing device can realize accurate control of the amount of glue on the gluing roller without a scraper during the whole gluing process, thereby effectively prolonging the service life of the gluing device. When the amount of glue needs to be adjusted, the air pressure value in the inner cavity of the glue tank above the liquid level is directly adjusted by the air pump, and the discharge speed of the glue can be accurately controlled by utilizing the pressure difference between the inside and outside.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film gluing, and specifically discloses a uniform gluing equipment for composite film. BACKGROUND

[0002] In the production process of composite film, a layer of glue is uniformly coated on the surface of the base film, and then the base film is combined with other functional films. Then, the composite film is sent to a drying section to dry and shape the glue, and then a composite film with corresponding functions is obtained. At present, there are various film gluing equipment on the market, but the control principles of the gluing process and the glue coating amount are basically the same. That is, the coating roller is immersed in the glue tank, and then the excess glue on the surface of the coating roller is scraped off by the scraper to control the glue coating amount and achieve uniform gluing.

[0003] For example, the utility model patent with the application number CN2020215391992 discloses a film coating machine, which comprises a coating box and a coating roller partially embedded in the coating box. The coating roller is provided with a scraping mechanism for cooperation. The scraping mechanism comprises a scraper plate arranged on one side of the coating roller and extending along the length direction of the coating roller, and a surrounding plate connected with the scraper plate. The scraper plate and the surrounding plate form a material collecting cavity, and the material collecting cavity is connected with a treatment assembly. The working process of the film coating machine is the same as that of most film gluing equipment on the market. Although the glue coating amount can be controlled by controlling the feeding amount of the scraper, the outer surface of the scraper and the coating roller will be worn to some extent after a long time of operation, which reduces the service life of the film coating machine. In addition, the glue coating amount of the coating roller in the coating box is affected by the rotating speed of the coating roller, which cannot meet the gluing requirements of the base film at different pulling speeds. The operator needs to continuously adjust the scraper to adjust the gluing amount, and the whole adjustment process is relatively complicated. Therefore, the present application provides a uniform gluing equipment for composite film production and processing, which can effectively solve the above technical problems. SUMMARY

[0004] The present application aims to provide a uniform gluing equipment for composite film production and processing to solve the problems in the background art.

[0005] The present application is achieved by the following technical solutions:

[0006] The application discloses a uniform gluing equipment for composite film, which comprises a film transmission frame, a gluing roller, a glue tank and a balance glue supplementing tank, the gluing roller is rotatably arranged in the film transmission frame, a power unit for driving the gluing roller to rotate is arranged on the film transmission frame, the glue tank is arranged above the gluing roller, a gluing surface which is combined with the gluing roller is arranged on the lower end of the glue tank, a row of glue outlet holes which are arranged along the axial direction of the gluing roller are arranged on the gluing surface, the air above the liquid level in the glue tank is connected with an air pump through an air extraction pipe, and a valve is arranged on the air extraction pipe, and the balance glue supplementing tank is connected with the glue tank through a glue pipe to realize dynamic balance of the liquid level in the glue tank.

[0007] As a first specific arrangement of the above scheme, the balance glue supplementing tank and the glue tank are arranged side by side above the film transmission frame, and the glue pipe between the balance glue supplementing tank and the glue tank is arranged in a siphon pipe structure.

[0008] As a second specific arrangement of the above scheme, a control box is arranged on the film transmission frame, a liquid level sensor is arranged on the glue tank, a glue pump is arranged on the balance glue supplementing tank, one end of the glue pipe extends into the glue tank, the other end is connected with the glue pump, and the input end of the glue pump is connected with the balance glue supplementing tank.

[0009] As a further arrangement of the above scheme, a gas pressure monitoring unit for monitoring the gas pressure above the liquid level in the glue tank is arranged on the glue tank.

[0010] As a specific arrangement of the above scheme, the gas pressure monitoring unit is one of a gas pressure gauge and a gas pressure sensor.

[0011] As a further arrangement of the above scheme, material guide rollers are rotatably connected to the left and right sides of the gluing roller in the film transmission frame, and the included angle between the base film and the gluing roller is not less than 60 degrees under the action of the two material guide rollers.

[0012] As a further arrangement of the above scheme, a row of the glue outlet holes are equidistantly arranged along the axial direction of the gluing roller, and a glue uniform distribution roller is rotatably arranged in the film transmission frame and closely arranged with the gluing roller.

[0013] As a further arrangement of the above scheme, a threaded guide groove is arranged on the outer circular surface of the glue uniform distribution roller, and the gluing roller and the glue uniform distribution roller are synchronously and rotatably connected by a transmission member.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] The composite film uniform gluing equipment disclosed by the application can realize precise control of the glue amount on the glue roller without setting a scraper during the gluing process, and effectively improves the service life of the whole gluing equipment.

[0016] When the amount of glue needs to be adjusted, the operator directly adjusts the air pressure value in the inner cavity of the glue tank above the liquid level through the air pump, and the discharge speed of the glue can be precisely controlled by using the effect of the pressure difference between the inside and outside, which has the advantages of precise control of the amount of glue, quick adjustment operation, etc. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the embodiment 1 of the application.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure inside the film transmission machine base in the embodiment 1 of the application.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the glue tank in the application.

[0021] Figure 4 It is a schematic diagram of the plane structure of the glue tank, the balance glue supplementing tank, etc. in the embodiment 1 of the application.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the glue roller, the glue uniform distribution roller, the transmission member, etc. in the application.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the embodiment 2 of the application. DETAILED DESCRIPTION

[0024] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should belong to the scope of protection of the present application.

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings in the embodiments of the present application. Figures 1-6 The present application will be described in detail below with reference to the drawings in the embodiments of the present application.

[0026] Embodiment 1

[0027] Embodiment 1 discloses a uniform gluing equipment for composite film production and processing, referring to the drawings in the embodiments of the present application, Figure 1 and the drawings in the embodiments of the present application, Figure 2 The main body of the equipment includes a film transmission machine base 1, a gluing roller 2, a glue tank 3 and a balance glue tank 4. The left and right ends of the film transmission machine base 1 are respectively rotatably connected with an inlet guide roller 5 and an outlet guide roller 6, so that the base film 100 is guided into by the inlet guide roller 5, and then guided out by the outlet guide roller 6 after gluing.

[0028] The gluing roller 2 is rotatably arranged on the film transmission machine base 1 between the inlet guide roller 5 and the outlet guide roller 6, and a power unit 7 for driving the gluing roller 2 to rotate at a uniform speed is arranged on the side of the film transmission machine base 1. The power unit 7 is composed of a speed reduction gear box and a variable frequency motor. The variable frequency motor is connected with the input end of the speed reduction gear box, and then the output end of the speed reduction gear box is connected with the gluing roller 2.

[0029] Referring to the drawings in the embodiments of the present application, Figure 3, glue tank 3 is arranged above the glue roller 2, and is fixed by the fixed frame on the film transmission machine base 1. The bottom surface of the glue tank 3 above the glue roller 2 is arranged in an arc shape, and a glue coating surface 301 matched with the outer cylindrical surface of the glue roller 2 is arranged at the lower end of the arc-shaped bottom surface, and a row of glue outlet holes 302 parallel to the axis direction of the glue roller 2 are arranged on the glue coating surface 301, and the row of glue outlet holes 302 are arranged at equal intervals along the axis direction of the glue roller 2. An air pressure gauge 8 is arranged on the upper surface of the glue tank 3, and an air suction pipe 9 is connected to the glue tank 3 above the glue tank 3, and the end of the air suction pipe 9 is connected to an air suction pump 10, and an electromagnetic valve 11 is arranged on the air suction pipe 9 close to the glue tank 3. During operation of the equipment, the inner wall of the glue tank 3 above the glue tank 3 is sucked to a negative pressure state by the air suction pump 10, and the internal negative pressure value is obtained in time by the air pressure gauge 8, and when the preset value is reached, the electromagnetic valve 11 is closed and the air suction pump 10 is stopped, and then during the glue discharging process, due to the pressure difference existing in the glue tank 3, the glue in the glue tank 3 can be slowly discharged through the glue outlet holes 302, and the glue discharging speed of the glue outlet holes 302 can be adjusted by changing the pressure difference.

[0030] Referring to the accompanying drawings Figure 1 and the accompanying drawings Figure 4 , in order to keep the liquid level of the glue in the glue tank 3 unchanged during the glue coating process, avoid the influence of the pressure difference on the glue discharging speed, the balance glue supplement tank 4 is installed above the film transmission machine base 1 through the fixed plate 12, and the balance glue supplement tank 4 is arranged side by side with the glue tank 3, and then the balance glue supplement tank 4 and the glue tank 3 are connected by the siphon pipe 13. During the operation of the equipment, when the liquid level in the glue tank 3 is lower than the lower end of the siphon pipe 13, the glue stored in the glue tank 3 is supplied into the glue tank 3 in time through the siphon effect.

[0031] Referring to the accompanying drawings Figure 2 , the accompanying drawings Figure 4 and the accompanying drawings Figure 5 , in order to ensure that the base film 100 and the glue roller 2 have enough coating surface, two material guide rollers 14 are rotatably connected in the film transmission machine base 1, and the two material guide rollers 14 are arranged on the left and right sides of the glue roller 2 respectively, so that under the action of the material guide rollers 14, the coating film wrap angle between the base film and the glue roller 2 is not less than 60°, so that the glue roller 2 can fully coat the surface glue on the upper surface of the base film 100.

[0032] Finally, in order to evenly distribute the glue liquid discharged from the glue discharge hole 302 on the glue coating roller 2 when coating the base film 100, a glue liquid uniform distribution roller 15 is rotatably connected to the film transmission machine base 1 and closely abuts the glue coating roller 2, and the outer surface of the glue liquid uniform distribution roller 15 is provided with a thread guide groove 151 arranged along the axial direction thereof. Meanwhile, a transmission wheel 16 is arranged on the same roller shaft of the glue coating roller 2 and the glue liquid uniform distribution roller 15, and a transmission member 17 is arranged between the two transmission wheels 16, and the transmission member 17 can be a triangular belt or a transmission chain, and the transmission wheel 16 can be a corresponding pulley or a sprocket. When the glue coating roller 2 rotates uniformly under the action of the power unit 7, it can adhere the glue liquid discharged from the glue discharge hole 302 to the surface, and then when it rotates to the glue liquid uniform distribution roller 15, the glue liquid can be evenly spread on the outer surface of the glue liquid uniform distribution roller 15 under the rotation of the glue liquid uniform distribution roller 15 and the scraping of the thread guide groove 151, and then when it abuts the base film 100, the glue liquid can be evenly coated on the base film 100.

[0033] Embodiment 2

[0034] This embodiment 2 discloses a second technical solution based on embodiment 1 and designed for self-balancing of the liquid level in the glue tank 3, and the same parts as embodiment 1 will not be described again, and the different parts are referred to the accompanying drawings of this embodiment 2. Figure 6 .

[0035] This embodiment 2 is provided with a control box 18 on the film transmission machine base 1, and the inside of the control box 18 is provided with a control module, and a liquid level sensor 19 is further arranged on the glue tank 3 and extends to the lower end of the liquid level in the glue tank 3, and the liquid level sensor 19 is connected to the signal input end of the control module.

[0036] Meanwhile, the balance glue supplement tank 4 is arranged beside the film transmission machine base 1, and a glue pump is arranged on the balance glue supplement tank 4, the glue pump is connected to the signal output end of the control module, and a glue injection pipe 20 is connected to the glue pump, and the end of the glue injection pipe 20 extends into the glue tank 3. In addition, the embodiment 2 is further provided with a gas pressure sensor 21 instead of the gas pressure gauge in embodiment 1, and the gas pressure sensor 21 and the air pump 10 are respectively connected to the signal input end and the output end of the control module.

[0037] The embodiment 2 monitors the glue liquid level in the glue tank 3 in real time through the liquid level sensor 19, and when the liquid level in the glue tank 3 is lower than the set value, the glue pump is started in time to supplement the glue liquid in the balance glue supplement tank 4 to the glue tank 3, so that the glue liquid level in the glue tank 3 is always at a constant position. Meanwhile, when it is necessary to speed up or slow down the glue discharging speed, it is only necessary to start the air pump 10 to pump the space above the liquid level in the glue tank 3 to a set air pressure value.

[0038] The above merely preferred embodiments of the present application are not used to limit the present application, any modification, equivalent replacement and improvement etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A composite film uniform coating device, characterized in that, The device includes a film conveyor base, a coating roller, a glue tank, and a balancing glue replenishment tank. The coating roller is rotatably mounted in the film conveyor base, and a power unit for driving the coating roller to rotate is provided on the film conveyor base. The glue tank is located directly above the coating roller, and a coating surface that fits against the coating roller is provided at the lower end of the glue tank. A row of glue outlet holes is provided on the coating surface along the axial direction of the coating roller. The liquid level in the glue tank is connected to an air pump through an air extraction pipe, and a valve is provided on the air extraction pipe. The balancing glue replenishment tank is connected to the glue tank through a glue pipe to achieve dynamic balance of the liquid level in the glue tank. The balanced glue tank and the glue tank are arranged side by side above the film conveyor base, and the glue pipe between the balanced glue tank and the glue tank is a siphon structure. A row of glue outlet holes are equally spaced along the axial direction of the coating roller, and a glue distribution roller that is tightly attached to the coating roller is also rotatably arranged in the film conveyor base; The outer surface of the adhesive distribution roller is provided with a threaded guide groove, and the adhesive coating roller and the adhesive distribution roller are connected by a transmission component for synchronous rotation.

2. The composite film uniform coating equipment according to claim 1, characterized in that, A control box is installed on the film conveyor base, a liquid level sensor is installed on the glue tank, a glue pump is installed on the balance glue tank, one end of the glue pipe extends into the glue tank, and the other end is connected to the glue pump. The input end of the glue pump is connected to the balance glue tank.

3. The composite film uniform coating equipment according to claim 1 or 2, characterized in that, The adhesive tank is equipped with a pressure monitoring unit that monitors the air pressure above the liquid level in the adhesive tank.

4. The composite film uniform coating equipment according to claim 3, characterized in that, The air pressure monitoring unit is either a barometer or an air pressure sensor.

5. The composite film uniform coating equipment according to claim 1 or 2, characterized in that, The film conveyor base is rotatably connected to guide rollers located on the left and right sides of the coating roller, respectively. Under the action of the two guide rollers, the wrap angle between the base film and the coating roller is not less than 60°.

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