Automatic glue coating liquid level keeping device for comma scraper

Abstract

The utility model discloses a comma scraper gluing liquid level automatic keeping device, and belongs to the technical field of comma scraper gluing liquid level keeping. Comprising a tank body, a strip-shaped transparent observation window arranged on the side wall of the tank body, a baffle hinged to the outer wall of the tank body and used for shielding the transparent observation window, and a limiting device for limiting the opening and closing end of the baffle to the side wall of the tank body. The transparent observation window is arranged, so that a worker can conveniently observe the balance of diethyl carbonate in the tank body; due to the fact that diethyl carbonate accelerates to volatilize when exposed to light and the like, on the basis, the baffle used for shielding the transparent observation window is hinged to the outer wall of the tank body, and when the transparent observation window is not used, the baffle can be rotated to shield the transparent observation window so as to avoid illumination and the like; by arranging the limiting device for limiting the opening and closing end of the baffle to the side wall of the tank body, after the baffle rotates to shield the transparent observation window, the opening and closing end of the baffle can be limited to the side wall of the tank body through the limiting device, and then the situation that the baffle is automatically opened, and consequently the shielding effect of the baffle fails is avoided.

Description

Technical Field

[0001] This utility model relates to the field of comma scraper adhesive level maintenance technology, and in particular to an automatic adhesive level maintenance device for comma scraper adhesive. Background Technology

[0002] The comma-shaped doctor blade coating unit on the coating machine uses a large amount of adhesive. When using high-viscosity adhesive (1500–4000 mPa·s), the adhesive in the glue tank does not circulate, meaning that adhesive must be added to the glue tank according to the amount of adhesive used. Various pumps are required to transport the adhesive from the glue bucket to the glue tank for the adhesive addition operation.

[0003] Currently, there are two common control methods:

[0004] The first method involves employees visually observing changes in the glue tank level and manually controlling the glue supply pump to start and stop. To ensure the glue tank is neither short of material nor overflowing, operators are exposed to an environment where organic solvents are constantly evaporating. Even with proper personal protective equipment such as half-face masks and full-face masks, there are still occupational health and safety risks associated with the adhesive tape.

[0005] The second method involves conveying the glue to a high-level tank, where gravity allows the glue to flow into the glue tank. Automatic or manual valves are installed along the glue delivery path between the high-level tank and the glue tank.

[0006] In the first glue supply method, the liquid level in the glue tank fluctuates, causing the glue to adhere to the tank walls. In the second glue supply method, the continuous descent of the glue in the elevated tank also causes glue to adhere to the tank walls. After the glue adheres to the walls, solvent evaporation produces gel particles, which in turn affects the appearance quality of the glue coating.

[0007] Therefore, it is extremely important to provide a method that can keep the adhesive level within a stable range. Utility Model Content

[0008] The purpose of this invention is to overcome the problems of the prior art and provide an automatic glue level maintaining device for comma scraper application. This device replaces manual control by operators through technical means, and automatically controls the glue supply pump to start and stop, so that the liquid level in the glue tank is always kept in a stable range.

[0009] The objective of this utility model is achieved through the following technical solution:

[0010] An automatic glue level maintaining device for a comma-shaped scraper includes a glue tank, a glue supply tank, and a glue supply pipeline connecting the two; the glue supply pipeline is equipped with a valve, a flow meter, and a glue supply pump; the glue tank is equipped with a probe for detecting the glue level; and it also includes a processing controller, which is electrically connected to the valve, the probe, the glue supply pump, and the flow meter respectively.

[0011] In the above solution, by installing valves, flow meters, and a glue supply pump on the glue supply pipeline, installing a probe for detecting the glue level in the glue tank, and installing a processing controller electrically connected to the valves, probe, glue supply pump, and flow meter, combined with the glue tank, glue supply container, and glue supply pipeline, an automatic control system can be formed. This system can accurately set the glue level and automatically control the start and stop of the glue supply pump and the opening of the valves to keep the glue level in the tank within a stable range. This automatic control system can replace manual operation with automation technology, effectively saving workload and improving operational convenience. Furthermore, because it eliminates the need for workers to be exposed to an environment of continuously evaporating organic solvents for extended periods, it effectively improves the safety of the equipment. Specifically, the upper and lower limits of the liquid level are set in the processing controller. When the probe detects the drop in the liquid level in the glue tank and triggers the threshold of the switch, the processing controller will send a switch signal to the glue supply pump. Through the data feedback from the flow meter, the flow rate of the glue supply pump is automatically adjusted, thereby controlling the flow rate of the glue in the glue supply pipeline so that the glue in the glue supply tank flows accurately to the glue tank, thus ensuring accurate control of the height of the glue in the glue tank.

[0012] Preferably, the probe is a non-contact ultrasonic sensor or a contact capacitive sensor.

[0013] Preferably, the ultrasonic sensor is provided with an explosion-proof glass cover.

[0014] Preferably, the processing controller is provided with an explosion-proof glass cover.

[0015] Preferably, the valve is a shut-off valve or a solenoid valve.

[0016] Preferably, the glue supply pump is a gear pump or a diaphragm pump.

[0017] Preferably, a pipe is connected between the glue outlet of the glue supply pipeline and the glue supply tank.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This utility model, by installing valves, flow meters, and a glue supply pump on the glue supply pipeline, installing a probe for detecting the glue level in the glue tank, and installing a processing controller electrically connected to the valves, probe, glue supply pump, and flow meter, combined with the glue tank, glue supply bucket, and glue supply pipeline, can form an automatic control system to accurately set the glue level. By automatically controlling the start and stop of the glue supply pump and the opening degree of the valve, the liquid level in the glue tank is kept within a stable range. Specifically, the processing controller sets upper and lower limits for the liquid level. When the probe detects a drop in the glue tank liquid level that triggers a switching threshold, the processing controller sends a switching signal to the glue supply pump. Based on the data feedback from the flow meter, the flow rate of the glue supply pump is automatically adjusted, thereby controlling the flow rate of the glue in the glue supply pipeline, so that the glue in the glue supply bucket flows accurately to the glue tank, thus ensuring precise control of the glue level in the glue tank.

[0020] 2. This utility model provides an automatic control system that can replace manual control by operators through automation technology, effectively saving workload and improving the convenience of operation. At the same time, since it does not require workers to be exposed to an environment where organic solvents are constantly evaporating for a long time, it effectively improves the safety of the device.

[0021] 3. This utility model provides an automatic control system that can adjust the flow rate of the adhesive according to the speed of the coating machine, so that the adhesive does not cause scouring or splashing during the process of injecting the adhesive into the glue tank from the glue supply pipeline. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure in Example 1;

[0023] Figure 2 This is a schematic diagram of the working structure during the rinsing of the glue supply tank in Example 3;

[0024] In the diagram: 1-Glue tank, 2-Glue supply bucket, 3-Glue supply pipeline, 4-Valve, 5-Flow meter, 6-Glue supply pump, 7-Probe, 8-Processing controller, 9-Comma scraper glue application unit, 10-Pipeline. Detailed Implementation

[0025] Example 1

[0026] A comma-shaped scraper adhesive level automatic maintenance device, such as Figure 1As shown, the system includes a glue tank 1, a glue supply tank 2, and a glue supply pipeline 3 connecting the two. The glue supply pipeline 3 is equipped with a valve 4, a flow meter 5, and a glue supply pump 6. A probe 7 for detecting changes in the glue level is installed inside the glue tank 1. The system also includes a processing controller 8 (Mianyang Weixiang ZK24B1), which is electrically connected to the valve 4, probe 7, glue supply pump 6, and flow meter 5. A comma-shaped scraper glue application unit 9 is located above the glue tank 1 (the comma-shaped scraper glue application unit 9 and its location are existing technologies). The probe 7 is a non-contact ultrasonic sensor (response time 10ms, detection height 50mm). Because the area where the coating liquid is used has high electrical safety requirements, both the ultrasonic sensor and the processing controller 8 are equipped with explosion-proof glass covers (any existing explosion-proof glass cover can be used, not shown in the figure). The valve 4 is a shut-off valve, used for system start-up and shutdown. The glue supply pump 6 is a gear pump.

[0027] Working principle: The upper and lower limits of the liquid level are set in the processing controller 8. When the probe 7 detects the drop in the liquid level of the glue tank 1, triggering the threshold of the switch, the processing controller 8 will send a switch signal to the gear pump. Through the data feedback from the flow meter 5, the speed of the gear pump is automatically adjusted, thereby controlling the flow rate of the glue in the glue supply pipeline 3, so that the glue in the glue supply tank 2 flows accurately to the glue tank 1, thereby ensuring the accurate control of the height position of the glue in the glue tank 1.

[0028] Example 2

[0029] An automatic glue level maintaining device for a comma-shaped scraper adhesive applicator includes a glue tank 1, a glue supply tank 2, and a glue supply pipeline 3 connecting the two. The glue supply pipeline 3 is equipped with a valve 4, a flow meter 5, and a glue supply pump 6. A probe 7 for detecting the glue level is installed inside the glue tank 1. The device also includes a processing controller 8 (Mianyang Weixiang ZK23A4), which is electrically connected to the valve 4, probe 7, glue supply pump 6, and flow meter 5. A comma-shaped scraper adhesive applicator 9 is located above the glue tank 1 (the comma-shaped scraper adhesive applicator 9 and its location are existing technologies). The probe 7 is a contact-type capacitive sensor that directly penetrates the glue in the glue tank 1. Because the area where the coating liquid is used has high electrical safety requirements, the processing controller 8 is externally equipped with an explosion-proof glass cover (any explosion-proof glass cover in the prior art can be used, not shown in the figure). The valve 4 is a solenoid valve; the glue supply pump 6 is a diaphragm pump.

[0030] Working Principle: The upper and lower limits of the liquid level and alarm values ​​are set in the processing controller 8, and an audible and visual alarm is installed outside the coating room to promptly remind operators of the liquid level status in the glue tank 1. When the probe 7 detects a drop in the liquid level in the glue tank 1 that triggers the switching threshold, the processing controller 8 transmits a switching signal to the solenoid valve controlling the compressed air delivery of the diaphragm pump. Based on data feedback from the flow meter 5, the diaphragm pump's start and stop are automatically adjusted. To accommodate the need for low glue usage during product operation, the processing controller 8 transmits a signal to the solenoid valve to assist in controlling the glue flow rate in the glue supply line 3, maintaining it within a stable range of 1-3 m / s. 3 / h. This ensures that the adhesive in the glue supply tank 2 flows precisely to the glue tank 1, thereby guaranteeing precise control of the height of the adhesive in the glue tank 1.

[0031] Example 3

[0032] The second adhesive supply method mentioned in the background art requires a large amount of organic solvent when cleaning the high-level tank, and the gel adhering to the walls is not easy to clean completely. However, this invention is extremely convenient for cleaning. Specifically, based on Example 1 or Example 2, such as... Figure 2 As shown, a pipe 10 is connected between the glue outlet of the glue supply pipeline 3 and the glue supply tank 2. After the glue supply is completed, solvent is added to the glue supply tank 2, and the pipe 10 is connected between the glue outlet of the glue supply pipeline 3 and the glue supply tank 2. Then, the glue supply tank 2 can be flushed by the solvent circulation through the glue supply pump 6 on the glue supply pipeline 3.

Claims

1. A comma blade coating glue level automatic maintaining device, characterized in that, It includes glue tank (1), glue bucket (2), and the glue pipeline (3) that connects two; The glue pipeline (3) is provided with valve (4), flowmeter (5) and glue pump (6);The glue tank (1) is provided with probe (7) for detecting glue liquid level;It also includes processing controller (8), processing controller (8) is respectively with valve (4), probe (7), glue pump (6), flowmeter (5) electric connection.

2. The comma coater glue level automatic maintaining device according to claim 1, characterized in that, The probe (7) is a non-contact ultrasonic sensor or a contact capacitive sensor.

3. The comma coater glue level automatic maintaining device according to claim 2, characterized in that, The ultrasonic sensor is externally provided with an explosion-proof glass cover.

4. The automatic glue level maintaining device for comma coater according to claim 3, wherein The processing controller (8) is externally provided with the explosion-proof glass cover.

5. The automatic glue level maintaining device for comma coater according to claim 1, wherein The valve (4) is a cut-off valve or a solenoid valve.

6. The automatic glue level maintaining device for comma coater according to claim 1, wherein The glue pump (6) is a gear pump or a diaphragm pump.

7. The automatic glue level maintaining device for comma coater according to claim 1, wherein The glue outlet of the glue pipeline (3) is threadedly connected with a pipeline (10) between the glue bucket (2).

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