Gluing amount on-line monitoring device for wet-type compound machine

Abstract

The utility model relates to a gluing amount on-line monitoring device for a wet-type compound machine, which comprises a support frame, a glue storage container, a liquid level detection module for detecting the liquid level of glue in the glue storage container, a glue supply tank, a return pipe, a glue conveying pump and a controller, the glue supply tank comprises an outer tank body and an inner tank body, the height position of the outer tank body is higher than that of the glue storage container, and the height position of the inner tank body is lower than that of the glue storage container. The inner tank body is arranged on the inner side of the outer tank body, an outer notch is formed in the top of the outer tank body, an inner notch is formed in the top of the inner tank body, a backflow cavity is formed between the inner tank body and the outer tank body, a backflow opening is formed in the bottom of the backflow cavity, and the backflow opening is communicated with an inner cavity of the glue storage container through a backflow pipe; a liquid inlet of the glue conveying pump is communicated with an inner cavity of the glue storage container through a first glue conveying pipe, and a liquid outlet of the glue conveying pump is communicated with an inner cavity of the inner tank body through a second glue conveying pipe; and the liquid level detection module is electrically connected with the corresponding input end of the controller. According to the online monitoring device for the gluing amount, the gluing amount of the wet-type compound machine in a certain time period can be quickly and accurately obtained, and the working efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of laminating machine technology, specifically to an online monitoring device for the amount of adhesive applied in a wet laminating machine. Background Technology

[0002] Lamination, also known as bonding, is the process of combining two or more materials (such as paper, aluminum foil, and film) together using a laminating machine. Lamination processes can be categorized into wet lamination, dry lamination, and solvent-free lamination, depending on the adhesive used. Wet lamination typically involves combining paper with a transfer film. After lamination, the film is peeled off using a peeling machine; therefore, paper produced using film transfer is considered environmentally friendly. In wet lamination, the amount of transfer adhesive applied (transfer volume) directly affects the integrity of the transfer coating on the film. Insufficient adhesive application leads to poor transfer, resulting in defects such as spotting, incomplete adhesion, and ink splattering during printing. Excessive adhesive application not only wastes adhesive but also causes uneven adhesion on the transfer paper due to a thicker adhesive layer, resulting in blurry images during printing.

[0003] Chinese utility model patent CN219850503U discloses an online glue application monitoring device installed on packaging machinery. It includes a weight measuring unit, a length measuring unit, and a control unit. The weight measuring unit collects the weight of the glue used by the packaging machinery. The weight measuring unit includes a first electronic scale, with a material bucket placed above it. The first electronic scale weighs the material bucket and the glue inside. The length measuring unit also includes a second electronic scale, with a material tray placed above it. The second electronic scale weighs the material tray and the glue inside. This online glue application monitoring device uses online electronic weighing, utilizing both the first and second electronic scales to measure the total change in glue volume in the material bucket and tray, thereby obtaining a more accurate weight of the glue used.

[0004] However, because the material tray is placed above the second electronic scale, and the part below the anilox roller shaft is located inside the tray's inner groove, the glue in the glue supply tank will inevitably shake when the machine is running. This shaking causes the second electronic scale below the tray to be unstable, resulting in constantly changing weight readings. Furthermore, since the amount of glue consumed during transfer is small, this online glue application monitoring device can only measure the glue application for longer composite lengths (e.g., 3000-5000 meters) to reduce weighing errors caused by machine operation. Additionally, due to the special nature of paper transfer, machine operators must calculate the real-time glue application within 500 meters of startup and be able to calculate and adjust the amount within a very short time if the application is incorrect. Clearly, the above solution is difficult to achieve. Utility Model Content

[0005] The technical problem this invention aims to solve is to provide an online glue application monitoring device for wet laminating machines. This device can quickly and accurately obtain the glue application amount of the wet laminating machine within a certain time period, thereby improving work efficiency. The technical solution adopted is as follows:

[0006] An online glue application monitoring device for a wet laminating machine, characterized in that it includes a support frame, a glue storage container, a level detection module for detecting the glue level in the glue storage container, a glue supply tank, a return pipe, a glue pump, and a controller. The glue storage container and the glue supply tank are both mounted on the support frame. The glue supply tank includes an outer tank and an inner tank. The outer tank is higher than the glue storage container, and the inner tank is located inside the outer tank. The top of the outer tank has an outer opening, and the top of the inner tank has an inner opening. The inner opening is lower than the outer opening. A return cavity is formed between the inner and outer tanks. The bottom of the return cavity has a return port, which is connected to the inner cavity of the glue storage container via a return pipe. The inlet of the glue pump is connected to the inner cavity of the glue storage container via a first glue supply pipe, and the outlet of the glue pump is connected to the inner cavity of the inner tank via a second glue supply pipe. The level detection module is electrically connected to the corresponding input terminal of the controller, and the glue pump is electrically connected to the corresponding output terminal of the controller.

[0007] Typically, in the aforementioned wet laminating machine, the support frame of the online glue application monitoring device is installed on the frame of the wet laminating machine. A glue application device is located directly above the inner tank. The glue application device includes a glue application motor, an anilox roller, a glue application roller, and a pressure roller. The glue application motor is installed on the frame. The anilox roller, glue application roller, and pressure roller are all rotatably installed on the frame and arranged sequentially from bottom to top. The anilox roller is connected to the glue application motor for transmission. The glue application roller, pressure roller, and anilox roller press against each other and rotate relative to each other.

[0008] During operation, the glue storage container contains a certain amount of glue. The glue in the storage container is drawn by the glue delivery pump and flows sequentially through the first delivery pipe, the second delivery pipe, and into the inner tank of the material trough. When the inner tank is full, the glue overflows from the inner tank opening and flows into the return chamber between the inner and outer tanks. It then flows back into the storage container through the return port and return pipe. This cycle maintains an initial dynamic equilibrium between the glue in the storage container and the material trough. The initial glue level detected by the liquid level detection device is then sent to the controller for recording. Subsequently, the wet laminating machine and production parameters can be... The controller inputs information such as transfer film width, machine speed, and glue application calculation interval (e.g., calculating glue application every 500 meters). Then, the glue application device of the wet laminator is started. The glue application motor drives the anilox roller to rotate, carrying up the glue in the inner tank and applying a layer of glue to the glue application roller. Then, the pressure roller is used for wet lamination. During this process, the liquid level detection device detects the liquid level change of the glue in the glue storage container in real time and sends it to the controller. The controller compares, analyzes, and automatically calculates the liquid level with the initial liquid level value, so as to quickly and accurately obtain the glue application amount of the wet laminator for a certain production time period, which can improve work efficiency.

[0009] The controller mentioned above can be a PLC controller, a microcontroller, or a microprocessor, etc.

[0010] As a preferred embodiment of this invention, the liquid level detection module employs a float-type liquid level gauge. The float-type liquid level gauge is installed on top of the glue storage container, with its float positioned within the container's inner cavity. The signal output terminal of the float-type liquid level gauge is electrically connected to the corresponding input terminal of the controller. Specifically, the float-type liquid level gauge can be a float-type liquid level gauge with communication functionality. The float-type liquid level gauge can read the glue level height information within the glue storage container's inner cavity and send the read liquid level height information to the controller.

[0011] As a further preferred embodiment of this utility model, the online glue application monitoring device further includes a cover plate, and the top of the glue storage container is provided with an upper opening; the cover plate is installed on the upper opening of the glue storage container, and the cover plate is provided with a first opening, a second opening and a third opening, the lower end of the first glue delivery pipe is inserted into the inner cavity of the glue storage container through the first opening, the lower end of the return pipe is inserted into the inner cavity of the glue storage container through the second opening, and the rod of the float-type liquid level gauge is inserted into the inner cavity of the glue storage container through the third opening.

[0012] As a preferred embodiment of this utility model, the glue storage container is a linear container. Specifically, the shape of the linear container can be one of a cylinder, cuboid, cube, etc.

[0013] As a preferred embodiment of this utility model, the online glue application monitoring device further includes a transparent connecting tube, which is vertically disposed on one side of the glue storage container. The transparent connecting tube has graduation lines on its wall, and its lower end is connected to the bottom of the inner cavity of the glue storage container via a guide tube. More preferably, the transparent connecting tube is made of glass, and the minimum graduation value of the graduation lines is 1 mm. During operation, the operator first weighs a certain amount of glue using an electronic scale, then pours the weighed glue into the glue storage container. At this time, the glue in the storage container flows into the transparent connecting tube through the guide tube. When the glue level in the storage container reaches a stable state, the operator can read the glue level height from the scale line on the connecting tube on the outside of the storage container. Subsequently, the operator can calculate the glue weight (linear weight) corresponding to each height position in the storage container based on the weight of the glue poured into the storage container and the read glue level height, and input the calculated glue weight corresponding to the liquid level height into the controller. The controller can then quickly and accurately calculate the glue application amount of the wet laminating machine for a certain production period by detecting the glue level change value in the storage container using the liquid level detection device.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] This online glue application monitoring device for wet laminators, through the cooperation of a support frame, glue storage container, liquid level detection module, glue supply tank, return pipe, glue pump and controller, can monitor the glue application of the wet laminator in real time over a certain period of time, with faster speed and higher accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0017] Figure 2 This is a logic block diagram of a preferred embodiment of the present invention. Detailed Implementation

[0018] like Figure 1 , Figure 2As shown, this online glue application monitoring device for wet laminating machines includes a support frame 1, a glue storage container 2, a float-type level gauge 3, a glue supply tank 4, a return pipe 5, a glue pump 6, and a controller 7. The glue storage container 2 and the glue supply tank 4 are both mounted on the support frame 1. The float-type level gauge 3 is mounted on top of the glue storage container 2, with its float 30 positioned inside the inner cavity of the container 2. The glue supply tank 4 includes an outer tank body 41 and an inner tank body 42. The outer tank body 41 is positioned higher than the glue storage container 2, and the inner tank body 42 is located inside the outer tank body 41. The top of the outer tank body 41 has an outer opening 410, and the inner tank... The top of the body 42 is provided with an inner groove 420, the height of which is lower than that of the outer groove 410. A reflux cavity 43 is formed between the inner groove body 42 and the outer groove body 41. A reflux port 431 is provided at the bottom of the reflux cavity 43. The reflux port 431 is connected to the inner cavity of the glue storage container 2 through the reflux pipe 5. The inlet of the glue pump 6 is connected to the inner cavity of the glue storage container 2 through the first glue delivery pipe 8. The outlet of the glue pump 6 is connected to the inner cavity of the inner groove body 42 through the second glue delivery pipe 9. The signal output terminal of the float-type liquid level gauge 3 is electrically connected to the corresponding input terminal of the controller 7. The glue pump 6 is electrically connected to the corresponding output terminal of the controller 7.

[0019] In this embodiment, the online glue application monitoring device also includes a cover plate 10, and the top of the glue storage container 2 is provided with an upper opening 20; the cover plate 10 covers the upper opening 20, and the cover plate 10 is provided with a first opening 101, a second opening 102 and a third opening 103. The lower end of the first glue delivery tube 8 is inserted into the inner cavity of the glue storage container 2 through the first opening 101, the lower end of the return tube 5 is inserted into the inner cavity of the glue storage container 2 through the second opening 102, and the rod 31 of the float-type liquid level gauge 3 is inserted into the inner cavity of the glue storage container 2 through the third opening 103.

[0020] In this embodiment, the glue storage container 2 is a linear container, and the shape of the linear container can be one of cylinder, cuboid, cube, etc.

[0021] In this embodiment, the online glue application monitoring device further includes a transparent connecting tube 11, which is vertically disposed on one side of the glue storage container 2. The transparent connecting tube 11 has graduation lines 110 on its wall, and its lower end is connected to the bottom of the inner cavity of the glue storage container 2 via a guide tube 12. Specifically, the transparent connecting tube 11 is made of glass, and the minimum graduation value of the graduation line 110 on the transparent connecting tube 11 is 1 mm.

[0022] The working principle of this online glue application monitoring device is briefly described below:

[0023] Typically, in the aforementioned wet laminating machine, the support frame 1 is installed on the machine frame, and a gluing device is installed directly above the inner tank 42. The gluing device includes a gluing motor, an anilox roller, a gluing roller, and a pressure roller. The gluing motor is installed on the machine frame, and the anilox roller, gluing roller, and pressure roller are all rotatably installed on the machine frame and arranged sequentially from bottom to top. The anilox roller is connected to the gluing motor for transmission, and the gluing roller, pressure roller, and anilox roller press against each other and rotate relative to each other.

[0024] During operation, the operator first weighs a certain amount of glue using an electronic scale, then pours the weighed glue into the glue storage container 2. At this time, the glue in the glue storage container 2 flows into the transparent connecting pipe 11 through the guide pipe 12. When the glue level in the glue storage container 2 reaches a stable state, the operator can read the glue level height from the scale line 110 on the connecting pipe outside the glue storage container 2. Subsequently, the operator can calculate the glue weight (linear weight) corresponding to each height position of the glue storage container 2 based on the weight of the glue poured into the glue storage container 2 and the read glue level height, and input the calculated glue weight corresponding to the liquid level height into the controller 7. Then, the glue in the glue storage container 2 flows sequentially through the first glue delivery pipe 8, the glue delivery pump 6, and the second glue delivery pipe 9 into the inner tank 42 of the material tank under the extraction of the glue delivery pump 6. When the glue in the inner tank 42 is full, it will overflow from the inner tank opening 420 and flow into the inner tank 4. The glue flows back into the storage container 2 through the return port 43 and the outer tank 41, and then back through the return port 431 and the return pipe 5. This cycle allows the glue in the storage container 2 and the material tank to reach an initial dynamic equilibrium. The liquid level detection device detects the initial liquid level value of the glue in the storage container 2 and sends it to the controller 7 for recording. Subsequently, the wet laminator and production parameters (such as transfer film width, machine speed, glue application calculation interval (such as calculating the glue application every 500 meters)) can be input into the controller 7. Then, the glue application device of the wet laminator is started. The glue application motor drives the anilox roller to rotate, which lifts the glue in the inner tank 42 and applies a layer of glue to the glue application roller. Then, wet lamination is performed with the pressure roller. During this process, the liquid level detection device detects the liquid level change of the glue in the storage container 2 in real time and sends it to the controller 7 for processing. The glue application amount of the wet laminator for a certain production time period is calculated quickly and accurately.

[0025] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles of this utility model patent are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined by the claims, they should all fall within the protection scope of this utility model.

Claims

1. An online monitoring device for adhesive application amount in a wet laminating machine, characterized in that: The device includes a support frame, a glue storage container, a level detection module for detecting the glue level in the storage container, a glue supply tank, a return pipe, a glue pump, and a controller. The storage container and the glue supply tank are both mounted on the support frame. The glue supply tank includes an outer tank and an inner tank. The outer tank is higher than the storage container, and the inner tank is located inside the outer tank. The top of the outer tank has an outer opening, and the top of the inner tank has an inner opening. The inner opening is lower than the outer opening. A return cavity is formed between the inner and outer tanks, and a return port is located at the bottom of the return cavity. The return port is connected to the inner cavity of the storage container via a return pipe. The inlet of the glue pump is connected to the inner cavity of the storage container via a first glue supply pipe, and the outlet of the glue pump is connected to the inner cavity of the inner tank via a second glue supply pipe. The level detection module is electrically connected to the corresponding input terminal of the controller, and the glue pump is electrically connected to the corresponding output terminal of the controller.

2. The online monitoring device for adhesive application amount in a wet laminating machine according to claim 1, characterized in that: The liquid level detection module adopts a float-type liquid level gauge, which is installed on the top of the glue storage container. The float of the float-type liquid level gauge is located in the inner cavity of the glue storage container. The signal output terminal of the float-type liquid level gauge is electrically connected to the corresponding input terminal of the controller.

3. The online monitoring device for adhesive application amount in a wet laminating machine according to claim 2, characterized in that: The online glue application monitoring device also includes a cover plate, and the top of the glue storage container is provided with an upper opening; the cover plate is installed on the upper opening of the glue storage container, and the cover plate is provided with a first opening, a second opening and a third opening, the lower end of the first glue delivery pipe is inserted into the inner cavity of the glue storage container through the first opening, the lower end of the return pipe is inserted into the inner cavity of the glue storage container through the second opening, and the rod of the float-type liquid level gauge is inserted into the inner cavity of the glue storage container through the third opening.

4. The online monitoring device for adhesive application amount in a wet laminating machine according to claim 1, characterized in that: The online glue application monitoring device also includes a transparent connecting tube, which is vertically arranged on one side of the glue storage container. The transparent connecting tube has scale lines on its wall, and its lower end is connected to the bottom of the inner cavity of the glue storage container through a guide tube.

5. The online monitoring device for adhesive application amount in a wet laminating machine according to claim 4, characterized in that: The transparent connecting tube is made of glass, and the minimum scale value of the scale line is 1mm.

6. The online monitoring device for adhesive application amount in a wet laminating machine according to claim 1, characterized in that: The storage container is a linear container.

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