Constant-weight coating weight control system

Abstract

The utility model relates to a constant-weight coating weight control system which is characterized in that an online batching tank is connected with a plurality of main material tanks and auxiliary material tanks, the online batching tank is connected with a constant-weight buffer tank sequentially through a feeding pump and a feeding flow meter, a constant-weight weighing device is arranged below the constant-weight buffer tank, the constant-weight buffer tank is connected with a material groove of a coating roller sequentially through a feeding pump and a feeding flow meter, and the coating roller is connected with a coating roller. An upper tuning fork liquid level sensor and a lower tuning fork liquid level sensor are arranged in a coating roller material groove, the coating roller material groove is connected with an on-line batching tank, a feeding pump, a feeding flow meter, a weighing device, a feeding pump and a feeding flow meter sequentially through a material returning pump and a material returning flow meter, and the upper tuning fork liquid level sensor, the lower tuning fork liquid level sensor, the material returning pump and the material returning flow meter are connected with a controller. And the controller is also connected with a coating meter counter corresponding to the base cloth in the coating direction of the coating roller. The system is simple in structure, the problem of volatilization of glue in the long-term coating process can be effectively solved, the consistency of the coating solid content is improved, and the stable coating quality is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of coating systems, specifically a kind of constant weight coating amount control system. BACKGROUND

[0002] In traditional adhesive tape coating glue production, glue is prepared by manual preparation, and after preparation is completed, glue tank is sent, and glue coating is completed on base fabric by coating roller on glue tank, but from preparation completion to glue coating and coating operation process, time-consuming is long, and glue is volatile in glue tank, which causes internal solid content to be unstable, and has great influence on coating glue layer quality. SUMMARY

[0003] The utility model provides a constant weight coating amount control system with simple structure, which can effectively solve the problem of glue volatilization during long-term coating, improve the consistency of coating solid content and ensure the coating quality.

[0004] The utility model discloses a kind of constant weight coating amount control system, it is characterized by comprising online batching tank, multiple main material tank and auxiliary material tank are connected on online batching tank, online batching tank is sequentially connected with constant weight buffer tank by feed pump and feed flowmeter, constant weight buffer tank is provided with constant weight weighing device, constant weight buffer tank is sequentially connected with the material tank of coating roller by feeding pump and feeding flowmeter, upper and lower tuning fork liquid level sensor are arranged in the material tank of coating roller, the material tank of coating roller is sequentially connected with online batching tank by return pump and return flowmeter, feed pump, feed flowmeter, weighing device, feeding pump, feeding flowmeter, upper and lower tuning fork liquid level sensor, return pump and return flowmeter are connected with controller, and the controller is also connected with the coating meter of corresponding base fabric in the coating direction of coating roller.

[0005] The lower tuning fork liquid level sensor is higher than the lowest position of coating roller in the material tank.

[0006] A kind of constant weight coating amount control system, it is characterized by comprising online batching tank, multiple main material tank and auxiliary material tank are connected on online batching tank, online batching tank is sequentially connected with constant weight buffer tank by feed pump and feed flowmeter, constant weight buffer tank is provided with constant weight weighing device, constant weight buffer tank is sequentially connected with the material tank of coating roller by feeding pump and feeding flowmeter, waveguide level meter is arranged in the material tank of coating roller, the material tank of coating roller is sequentially connected with online batching tank by return pump and return flowmeter, feed pump, feed flowmeter, weighing device, feeding pump, feeding flowmeter, waveguide level meter, return pump and return flowmeter are connected with controller, and the controller is also connected with the coating meter of corresponding base fabric in the coating direction of coating roller.

[0007] The main material tank and auxiliary material tank are connected with online batching tank by weighing preparation device, the weighing preparation device is liquid or powder feeding device, and the weighing preparation device is connected with controller.

[0008] The constant weight weighing device is an electronic weighing device, and the electronic weighing device is connected with the controller.

[0009] The coating roller material tank is sequentially connected with the constant weight buffer tank through the intermediate return pump and the intermediate return flow meter, and the intermediate return pump and the intermediate return flow meter are connected with the controller.

[0010] The utility model discloses beneficial effect is:

[0011] 1, the online batching tank is by main material tank and auxiliary material tank and is dosed into material through liquid or powder feeding device, and the online batching tank is connected with the constant weight buffer tank through the feeding pump and the feeding flow meter, and the constant weight buffer tank is connected with the electronic weighing device, and the constant weight buffer tank is connected with the material tank of the coating roller through the feeding pump and the feeding flow meter, and the coating roller is connected with the coating metering device and the controller under the control of the coating length and the timing control, and the liquid level feedback controller is monitored on line by the guided wave liquid level meter, the controller controls the constant weight buffer tank to supplement material, guarantees the material in the material tank to supplement the material of coating in the timing range of the controller, makes the solid content in the material tank keep constant, and it is helpful to improve the coating forming quality.

[0012] 2, the coating length and the coating time of the constant amount of glue in the material tank can be fed back by the upper and lower tuning fork liquid level sensor, the metering device and the controller timing, and the remaining glue in the material tank is returned to the constant weight buffer tank, and the constant weight glue amount in the constant weight buffer tank is much larger than the one-time feeding amount in the material tank, so that the glue with the increased solid content caused by the evaporation of the solvent in the remaining glue in the material tank after long-term coating operation is returned to the constant weight buffer tank for dilution, and the solid content area of the material tank supplied by the constant weight buffer tank is ensured to be close to constant, which helps to ensure the coating quality.

[0013] 3, when coating for the first time after the initial feeding of the material tank, the guided wave liquid level meter, the coating metering device and the coating time are calculated by the controller, and the coating length of the unit volume glue material, so that the theoretical glue consumption required for the fixed length coating can be calculated after the fixed length coating is completed, the remaining glue in the material tank can be returned to the online batching tank, the evaporation difference value can be obtained by calculating the return amount and the theoretical glue consumption required, the volatile glue can be supplemented according to the proportion of the glue in the online batching tank and the return amount, and the material constant weight and stable solid content feeding tank coating are ensured; the theoretical glue consumption required and the return amount can be completed synchronously without stopping the machine according to the evaporation difference value, and the return amount in the online batching tank can supplement the evaporation amount. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic view of the utility model embodiment one;

[0015] Figure 2 It is the structure schematic view of the utility model embodiment two.

[0016] Fig. : online batching tank 1, main material tank 2, auxiliary material tank 3, feed pump 4, feed flowmeter 5, constant weight buffer tank 6, electronic weighing device 7, controller 8, feeding pump 9, feeding flowmeter 10, trough 11, coating roller 12, base fabric 13, coating meter 14, upper tuning fork liquid level sensor 15, lower tuning fork liquid level sensor 16, return pump 17, return flowmeter 18, guided wave level gauge 19, intermediate return pump 20, intermediate return flowmeter 21. DETAILED DESCRIPTION

[0017] Further description is made below in combination with the drawings.

[0018] Figure 1 In the illustrated embodiment one, a constant weight coating amount control system comprises an online batching tank 1, a main material tank 2, an auxiliary material tank 3, a feed pump 4, a feed flowmeter 5, a constant weight buffer tank 6, an electronic weighing device 7, a controller 8, a feeding pump 9, a feeding flowmeter 10, a trough 11, a coating roller 12, a base fabric 13, a coating meter 14, an upper tuning fork liquid level sensor 15, a lower tuning fork liquid level sensor 16, a return pump 17, a return flowmeter 18. The online batching tank 1 is connected to a plurality of main material tanks 2 and a plurality of auxiliary material tanks 3. The auxiliary material tank contains a storage tank of volatile solvent. The main material tank 2 and the plurality of auxiliary material tanks 3 supply the online batching tank 1 with raw material liquid or powder according to weighing or metering. The online batching tank 1 is connected to the constant weight buffer tank 6 in sequence via the feed pump 4 and the feed flowmeter 5. The constant weight buffer tank 6 is provided with the electronic weighing device 7 below. The constant weight buffer tank 6 is connected to the trough 11 below the coating roller 12 in sequence via the feeding pump 9 and the feeding flowmeter 10. The upper and lower tuning fork liquid level sensors 15 and 16 are arranged in the trough 11. The lower tuning fork liquid level sensor 16 is lower than the lowest point of the coating roller 12. The trough 11 is connected to the online batching tank 1 in sequence via the return pump 17 and the return flowmeter 18. The feed pump, the feed flowmeter, the weighing device, the feeding pump, the feeding flowmeter, the upper and lower tuning fork liquid level sensors, the return pump, and the return flowmeter are connected to the controller 8. The controller 8 is also connected to the coating meter 14 corresponding to the base fabric 13 in the coating direction of the coating roller 12.

[0019] The lower tuning fork liquid level sensor is higher than the lowest position of the coating roller in the trough.

[0020] Figure 2The second embodiment shown includes an online batching tank 1, a main material tank 2, an auxiliary material tank 3, a feeding pump 4, a feeding flowmeter 5, a constant weight buffer tank 6, an electronic weighing device 7, a controller 8, a feeding pump 9, a feeding flowmeter 10, a trough 11, a coating roller 12, a base fabric 13, a coating meter 14, a return pump 17, a return flowmeter 18, a waveguide level meter 19, an intermediate return pump 20, and an intermediate return flowmeter 21. The online batching tank 1 is connected to a plurality of main material tanks 2 and a plurality of auxiliary material tanks 3. The auxiliary material tank contains a storage tank of volatile solvent. The main material tank 2 and the plurality of auxiliary material tanks 3 supply material to the online batching tank 1 according to the weighing or metering of the raw material liquid or powder. The online batching tank 1 is connected to the constant weight buffer tank 6 through the feeding pump 4 and the feeding flowmeter 5 in sequence. The constant weight buffer tank 6 is provided with the electronic weighing device 7. The constant weight buffer tank 6 is connected to the trough 11 below the coating roller 12 through the feeding pump 9 and the feeding flowmeter 10 in sequence. The waveguide level meter 19 is arranged in the trough 11. The trough 11 is connected to the constant weight buffer tank 6 through the intermediate return pump 20 and the intermediate return flowmeter 21 in sequence. The feeding pump, the feeding flowmeter, the weighing device, the feeding pump, the feeding flowmeter, the waveguide level meter, the intermediate return pump, and the intermediate return flowmeter are connected to the controller 8. The controller 8 is also connected to the coating meter 14 corresponding to the base fabric 13 in the coating direction of the coating roller 12.

[0021] The above embodiments are only simple implementations of the scheme of the present application. The two embodiments can also be combined for use. The return to the online batching tank or the constant weight buffer tank is determined according to the properties of the glue and the amount of volatilization.

[0022] In the present application, the weighing and metering of the main material and the auxiliary material belong to the prior art, and their structures are not marked in the drawings. The embodiments are not described in detail.

Claims

1. A constant weight coating amount control system, characterized in that: The system includes an online batching tank, which is connected to multiple main material tanks and auxiliary material tanks. The online batching tank is connected to a constant weight buffer tank via a feed pump and a feed flow meter. The constant weight buffer tank is equipped with a constant weight weighing device. The constant weight buffer tank is connected to the material trough of the coating roller via a feed pump and a feed flow meter. Upper and lower tuning fork level sensors are installed in the coating roller material trough. The coating roller material trough is connected to the online batching tank via a return pump and a return flow meter. The feed pump, feed flow meter, weighing device, feed pump, feed flow meter, upper and lower tuning fork level sensors, return pump, and return flow meter are connected to a controller. The controller is also connected to a coating meter corresponding to the base fabric in the coating direction of the coating roller.

2. The constant weight coating amount control system according to claim 1, characterized in that: The lower tuning fork level sensor is located above the lowest position of the coating roller in the trough.

3. A constant weight coating amount control system, characterized in that: The system includes an online batching tank, which is connected to multiple main material tanks and auxiliary material tanks. The online batching tank is connected to a constant weight buffer tank via a feed pump and a feed flow meter. The constant weight buffer tank is equipped with a constant weight weighing device. The constant weight buffer tank is connected to the material trough of the coating roller via a feed pump and a feed flow meter. A guided wave level gauge is installed in the material trough of the coating roller. The material trough of the coating roller is connected to the online batching tank via a return pump and a return flow meter. The feed pump, feed flow meter, weighing device, feed pump, feed flow meter, guided wave level gauge, return pump, and return flow meter are connected to a controller. The controller is also connected to a coating meter corresponding to the base fabric in the coating direction of the coating roller.

4. A constant weight coating amount control system according to claim 1 or 3, characterized in that: The main material tank and the auxiliary material tank are respectively connected to the online batching tank via a weighing and batching device. The weighing and batching device is a liquid or powder feeding device and is connected to a controller.

5. A constant weight coating amount control system according to claim 1 or 3, characterized in that: The constant weight weighing device is an electronic weighing device, which is connected to a controller.

6. A constant weight coating amount control system according to claim 1 or 3, characterized in that: The coating roller feed trough is connected to the constant weight buffer tank via an intermediate return pump and an intermediate return flow meter. The intermediate return pump and the intermediate return flow meter are connected to the controller.

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