Feeding device of coating machine and coating machine

Abstract

The utility model discloses a coating machine feeding device and a coating machine, the coating machine feeding device comprises a material storage tank, a first feeding port, a second feeding port and a third feeding port, and the material storage tank is provided with a first feeding port and a first discharging port; a second material inlet and a second material outlet are formed in the material disc; a first delivery pump and a second delivery pump; the first discharging port, the first conveying pump, the second feeding port, the second discharging port, the second conveying pump and the first conveying port are sequentially communicated to form a circulating conveying channel. According to the utility model, the first material outlet, the first material conveying pump, the second material inlet, the second material outlet, the second material conveying pump and the first material conveying port are sequentially communicated to form a circulating material conveying channel, and the liquid level of slurry in the material tray is finely controlled by controlling the flow of the first material conveying pump and the second material conveying pump, so that the liquid level is always kept at a proper height; therefore, the feeding speed of the slurry to the base coating roller is stabilized, and the coating quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of coating conveying, and particularly relates to a feeding device for a coater and a coater. Background Art

[0002] The coater is mainly used for the surface coating process production of plastic films or metal foils, etc., and is used to coat a roll of base material with a glue, coating or ink, etc. with a specific function. The slurry conveying mechanism is an important part of the coating device and is used to convey the slurry to the material tray and then coat the base material.

[0003] The existing feeding device for a coater mainly consists of a buffer tank and a feeding pump. The buffer tank is replenished manually, and then the feeding pump conveys the slurry in the buffer tank to the material tray. However, the feeding and conveying of the slurry in the material tray and the flow rate of the process liquid supplement cannot be accurately controlled, resulting in large fluctuations in the liquid level of the slurry in the material tray, and unable to provide stable hydraulic pressure to supply the slurry to the bottom coating roller in the coater, reducing the coating quality of the slurry. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a feeding device for a coater, aiming to solve the problem of unstable liquid level in the material tray of the existing feeding device for a coater.

[0005] To achieve the above object, the utility model proposes a feeding device for a coater, which includes:

[0006] A storage tank, which is formed with a first feed inlet and a first discharge outlet;

[0007] A material tray, which is formed with a second feed inlet and a second discharge outlet;

[0008] A first feeding pump, which is arranged between the first discharge outlet and the second feed inlet to convey the slurry in the storage tank to the material tray;

[0009] A second feeding pump, which is arranged between the second discharge outlet and the first feed inlet to convey the slurry in the material tray to the storage tank;

[0010] The first discharge outlet, the first feeding pump, the second feed inlet, the second discharge outlet, the second feeding pump, and the first feed inlet are sequentially connected to form a circulating feeding channel.

[0011] In some embodiments, the second feed inlet is arranged at the bottom of the material tray; and / or, the second discharge outlet is arranged at the side of the material tray.

[0012] In some embodiments, the feeding device for a coater further includes:

[0013] A first monitoring device, which is installed on the material tray for monitoring the weight and / or liquid level of the slurry in the material tray;

[0014] A controller, which is communicatively connected to the first monitoring device, and is used to control the feeding device of the coater to stop operating when it is determined according to the information fed back by the first monitoring device that the weight or liquid level of the slurry in the material tray exceeds the upper and lower limits of a first preset range.

[0015] In some embodiments, the material tray further includes a base, and the base is arranged below the material tray;

[0016] The first monitoring device includes a cantilever beam single-point weighing sensor installed between the base and the bottom of the material tray.

[0017] In some embodiments, the storage tank is further provided with a diversion pipe, and the diversion pipe includes a first pipe section and a second pipe section. The first pipe section extends into the storage tank from the first feed inlet, and the second pipe section extends from one end of the first pipe section far from the first feed inlet to the inner side wall of the storage tank.

[0018] In some embodiments, the second pipe section includes at least one V-shaped bending structure; or,

[0019] The second pipe section is arranged in a wavy shape; or,

[0020] The second pipe section extends from one end of the first pipe section far from the first feed inlet to the inner side wall of the storage tank along a straight track or an arc track.

[0021] In some embodiments, the feeding device of the coater further includes a second monitoring device, which is installed on the storage tank for monitoring the weight and / or liquid level of the slurry in the storage tank. The controller is communicatively connected to the second monitoring device, and is used to control the feeding device of the coater to stop operating when it is determined according to the information fed back by the second monitoring device that the weight or liquid level of the slurry in the storage tank exceeds the upper and lower limits of a second preset range; and / or,

[0022] The feeding device of the coater further includes a first back pressure valve, and the first back pressure valve is arranged between the second feed pump and the first feed inlet.

[0023] In some embodiments, a stirring mechanism is arranged in the storage tank; and / or,

[0024] The storage tank is provided with an observation window and a sight glass lamp.

[0025] In some embodiments, the coating machine feeding device further includes a particle filter, a pressure gauge, and a drain valve. The particle filter is disposed between the first feed pump and the second feed port for filtering the slurry conveyed from the first feed pump to the second feed port. The pressure gauge is connected to the particle filter for detecting the pressure inside the particle filter. The drain valve is connected to the particle filter for relieving the pressure of the particle filter when the pressure inside the particle filter exceeds a preset threshold; and / or,

[0026] The coating machine feeding device further includes a second back pressure valve, and the second back pressure valve is disposed between the first feed pump and the second feed port.

[0027] The present utility model further provides a coating machine, including the coating machine feeding device according to any one of the foregoing embodiments and a coating roller at least partially disposed in the material box.

[0028] The present utility model connects the first discharge port, the first feed pump, the second feed port, the second discharge port, the second feed pump, and the first feed port in sequence to form a circulating material conveying channel, and finely controls the liquid level of the slurry in the material tray by controlling the flow rates of the first feed pump and the second feed pump, ensuring that the liquid level always remains at an appropriate height, thereby stabilizing the feeding rate of the slurry to the bottom coating roller and improving the coating quality. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of an embodiment of the coating machine feeding device of the present utility model;

[0030] Figure 2 is a schematic structural diagram of a diversion pipe in the coating machine feeding device of the present utility model.

[0031] Reference Numerals:

[0032] 10, storage tank; 11, first feed port; 12, first discharge port; 13, diversion pipe; 13a, first pipe section; 13b, second pipe section; 14, stirring mechanism; 15, observation window; 16, sight glass lamp; 20, material tray; 21, second feed port; 22, second discharge port; 23, base; 30, first feed pump; 40, second feed pump; 50, first monitoring device; 60, second monitoring device; 70, first back pressure valve; 80, particle filter; 81, pressure gauge; 82, drain valve; 90, second back pressure valve. Detailed Description of the Embodiments

[0033] Next, the solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0036] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0037] When the coater is in use, the coating roller is usually arranged above the material box, and the roller surface of the coating roller is immersed in the slurry to supply material to the coating roller, and then the coating work is carried out through the coating roller. In order to ensure the accuracy of the feeding, the liquid level of the slurry in the material tray needs to be strictly controlled.

[0038] The present utility model provides a feeding device for a coater. Referring to Figure 1 , the feeding device for the coater includes:

[0039] A storage tank 10, the storage tank 10 is formed with a first feed inlet 11 and a first discharge outlet 12;

[0040] A material tray 20, the material tray 20 is formed with a second feed inlet 21 and a second discharge outlet 22;

[0041] The first feeding pump 30 is arranged between the first discharge port 12 and the second feeding port 21 to convey the slurry in the storage tank 10 to the tray 20.

[0042] The second feeding pump 40 is arranged between the second discharge port 22 and the first feeding port 11 to convey the slurry in the tray 20 to the storage tank 10.

[0043] The controller is communicatively connected to the first feeding pump 30 and the second feeding pump 40.

[0044] The first discharge port 12, the first feeding pump 30, the second feeding port 21, the second discharge port 22, the second feeding pump 40, and the first feeding port are sequentially connected to form a circulating feeding channel.

[0045] In this embodiment, the slurry flows out from the first discharge port 12 of the storage tank 10, is conveyed to the tray 20 through the first feeding pump 30, and then the second feeding pump 40 inputs the slurry in the tray 20 into the storage tank 10 from the first feeding port 11, so that the slurry in the tray 20 always remains in a flowing state, reducing the occurrence probability of slurry agglomeration and sedimentation. When the slurry in the tray 20 is too little, the flow rate of the first feeding pump 30 can be increased, or the flow rate of the second feeding pump 40 can be decreased, or both can be carried out simultaneously; when the slurry in the tray 20 is too much, the flow rate of the second feeding pump 40 can be increased, or the flow rate of the first feeding pump 30 can be decreased, or both can be carried out simultaneously. In this way, the liquid level of the slurry in the tray 20 can be precisely controlled to ensure uniform coating and improve the yield. It can be understood that the flow rates of the first feeding pump 30 and the second feeding pump 40 can be adjusted manually, or by connecting to a control device, so that the user only needs to operate the control device to achieve the adjustment process.

[0046] The storage tank 10 is a device for storing slurry, used to convey slurry to the tray 20 and recycle the slurry in the tray 20, and its shape and size can be set according to needs. It can be understood that since the slurry is continuously used, the slurry in the storage tank 10 will become less and less. At this time, the slurry can be injected into the storage tank 10 manually or by automatic conveying. Preferably, the storage tank 10 is a cylindrical metal tank, which is easy to handle and install. The first feeding pump 30 and the second feeding pump 40 usually adopt diaphragm pumps, and can also be selected according to the type of slurry and the required flow rate.

[0047] The shape and size of the material tray 20 are usually set according to the model of the coating roller. The first discharge port 12, the first feed pump 30, the second feed port 21, the second discharge port 22, the second feed pump 40 and the first feed port are sequentially connected by pipelines. According to actual needs, the first feed pump 30 can also be directly set at the first discharge port 12 or the second feed port 21, and the second feed pump 40 can be directly set at the first feed port 11 or the second discharge port 22. This embodiment does not limit this.

[0048] The utility model enables the first discharge port 12, the first feed pump 30, the second feed port 21, the second discharge port 22, the second feed pump 40, and the first feed port to be sequentially connected to form a circulating material feeding channel, and finely controls the liquid level of the slurry in the material tray 20 by controlling the flow rates of the first feed pump 30 and the second feed pump 40, thereby stabilizing the feeding rate of the slurry to the bottom coating roller and improving the coating quality.

[0049] As Figure 1 shown, in some embodiments, the second feed port 21 is arranged at the bottom of the material tray 20; and / or, the second discharge port 22 is arranged at the side of the material tray 20.

[0050] Since there are usually many particulate matters dispersed in the slurry, when the slurry in the material tray 20 is in a static state, the particulate matters will settle and aggregate, affecting the coating effect. Therefore, in this embodiment, by arranging the second feed port 21 at the bottom of the material tray 20, when the first feed pump 30 pumps the slurry into the material tray 20, the slurry flows upward by the conveying pressure and drives the surrounding slurry to move upward at the same time, so as to achieve the purpose of reducing the sedimentation rate of the particulate matters in the slurry.

[0051] Furthermore, by arranging the second discharge port 22 at the side of the material tray 20, it is possible to avoid the situation of chaotic and disorderly liquid flow and generation of a large number of bubbles when both the feeding and discharging of the material box are opened at the bottom, prevent large-area shrinkage holes from appearing on the coated surface after coating, reduce the tensile strength of the coating film, and reduce the adhesion of the coated surface.

[0052] As Figure 1 shown, in some embodiments, the feeding device of the coating machine further includes:

[0053] A first monitoring device 50, which is installed on the material tray 20 to monitor the weight and / or liquid level of the slurry in the material tray 20;

[0054] A controller, which is communicatively connected with the first monitoring device 50, and is used to control the feeding device of the coating machine to stop running when it is determined according to the information fed back by the first monitoring device 50 that the weight or liquid level of the slurry in the material tray 20 exceeds the upper and lower limits of the first preset range.

[0055] Among them, the first monitoring device 50 is used to monitor the slurry in the material tray 20. Exemplarily, if the first monitoring device 50 is used to monitor the liquid level of the slurry, when the liquid level height of the slurry exceeds or is lower than the threshold preset by the first monitoring device 50, the controller can automatically adjust the flow rates of the first feeding pump 30 and the second feeding pump 40, so that the slurry in the material tray 20 always maintains a certain liquid level, thereby improving the coating quality.

[0056] By the first monitoring device 50, the quality of the slurry in the material tray 20 is monitored in real time, and the power of the first feeding pump 30 and the second feeding pump 40 is controlled by the controller, that is, the flow rates of the second feeding port 21 and the second discharging port 22 on the material tray 20, so as to adjust the liquid level of the slurry in real time, ensure that the liquid level always maintains at a suitable height, and at the same time reduce the work burden and improve the accuracy of liquid level control.

[0057] As Figure 1 shown, in some embodiments, the material tray 20 further includes a base 23, and the base 23 is arranged below the material tray 20;

[0058] The first monitoring device 50 includes a cantilever beam single-point weighing sensor installed between the base 23 and the bottom of the material tray 20.

[0059] During use, one end of the cantilever beam single-point weighing sensor is fixed, and the other end is arranged between the base 23 and the material tray 20, and is used to carry the material tray 20 and measure the mass of the material tray 20 and the slurry. When the mass of the slurry changes, the cantilever beam single-point weighing sensor judges whether the changed mass exceeds or is lower than the preset threshold, and adjusts the flow rates of the first feeding pump 30 and the second feeding pump 40 accordingly.

[0060] Among them, the cantilever beam single-point weighing sensor has a simple structure and high measurement accuracy, and can be installed and used within a narrow space range, and is more suitable for installation between the material box and the base 23.

[0061] As Figure 1 and Figure 2 shown, in some embodiments, the storage tank 10 is further provided with a diversion pipe 13, and the diversion pipe 13 includes a first pipe section 13a and a second pipe section 13b. The first pipe section 13a extends from the first feeding port 11 into the storage tank 10, and the second pipe section 13b extends from one end of the first pipe section 13a far away from the first feeding port 11 to the inner side wall of the storage tank 10.

[0062] The diversion pipe 13 is used to direct the slurry input from the first feed port 11 to the inner wall of the storage tank 10, so that the slurry falls along the inner wall, avoiding the situation of slurry splashing and reducing the generation of bubbles. The first pipe section 13a is usually a straight pipe placed horizontally with a short length. The shape of the second pipe section 13b can be set as required, and only the outlet needs to be set close to the inner side wall of the storage tank 10, so that the slurry slides down along the inner side wall of the storage tank 10 when flowing out of the second pipe section 13b, preventing the falling slurry from impacting the slurry in the storage tank 10 and generating bubbles.

[0063] As Figure 1 shown, in some embodiments, the second pipe section 13b includes at least one V-shaped bending structure; or,

[0064] the second pipe section 13b is arranged in a wavy shape; or,

[0065] the second pipe section 13b extends from the end of the first pipe section 13a far from the first feed port 11 to the inner side wall of the storage tank 10 along a straight track or an arc track.

[0066] The second pipe section 13b is set to have a shape with a buffer structure, so that when the slurry moves in the second pipe section 13b, its kinetic energy is gradually consumed. When it flows to the outlet, the initial velocity is small, further reducing the probability of the slurry generating bubbles.

[0067] As Figure 1 shown, in some embodiments, the coating machine feeding device further includes a second monitoring device 60. The second monitoring device 60 is installed on the storage tank 10 to monitor the weight and / or liquid level of the slurry in the storage tank 10. The controller is communicatively connected to the second monitoring device 60 to control the coating machine feeding device to stop operating when it is determined according to the information fed back by the second monitoring device 60 that the weight or liquid level of the slurry in the storage tank 10 exceeds the upper and lower limits of the second preset range; and / or,

[0068] the coating machine feeding device further includes a first back pressure valve 70. The first back pressure valve 70 is arranged between the second feed pump 40 and the first feed port 11.

[0069] Since the quality of the slurry in the storage tank 10 affects the pressure at the first discharge port 12, which in turn affects the flow rate of the first feed pump 30. For example, if the slurry is too little, the first feed pump 30 needs to input a greater power to pump the slurry in the storage tank 10, and in order to control the quality of the slurry in the cartridge, it may also be necessary to adjust the power of the first feed pump 30, which will increase the difficulty of adjusting the power of the first feed pump 30. Therefore, in this embodiment, a second monitoring device 60 is provided to monitor the quantity of the slurry in the storage tank 10. For example, a liquid level sensor is set to measure the liquid level of the slurry, or a weight sensor can also be set to measure the quality of the slurry, so as to control the quality of the slurry in the storage tank 10 to be maintained within a suitable range, which is convenient for the staff or the controller, etc. to adjust the first feed pump 30.

[0070] The first back pressure valve 70 is used to ensure that the slurry in the circulating feed channel flows normally within a set pressure range and prevent the fluid from flowing back.

[0071] As Figure 1 shown, in some embodiments, a stirring mechanism 14 is provided in the storage tank 10; and / or,

[0072] The storage tank 10 is provided with an observation window 15 and a sight glass lamp 16.

[0073] Among them, the stirring member is usually a stirring rod and a driving member. By driving the stirring rod to rotate continuously through the driving member, the stirring of the slurry in the storage tank 10 is realized. Preferably, in this embodiment, there are two stirring rods, and they are in an S shape to fully stir the slurry. The observation window 15 and the sight glass lamp 16 are used to facilitate the staff to observe the situation in the storage tank 10 for targeted adjustment. For example, when the slurry in the storage tank 10 is too little, it is added in time.

[0074] As Figure 1 shown, in some embodiments, the coating machine feeding device further includes a particle filter 80, a pressure gauge 81 and a drain valve 82. The particle filter 80 is arranged between the first feed pump 30 and the second feed port 21 to filter the slurry conveyed from the first feed pump 30 to the second feed port 21. The pressure gauge 81 is connected to the particle filter 80 to detect the pressure in the particle filter 80. The drain valve 82 is connected to the particle filter 80 to relieve the pressure of the particle filter 80 when the pressure in the particle filter 80 exceeds a preset threshold; and / or,

[0075] The coating machine feeding device further includes a second back pressure valve 90, and the second back pressure valve 90 is arranged between the first feed pump 30 and the second feed port 21.

[0076] The particle filter 80 is used to filter foreign particles with large particle sizes. A pressure gauge 81 and a blowdown valve 82 are arranged at the particle filter 80. When it is detected that the pressure of the particle filter 80 exceeds the standard, the particle filter 80 can be disassembled after pressure relief through the blowdown valve 82 to prevent affecting the normal operation of the feeding device of the coater. The second backpressure valve 90 is used to ensure that the slurry in the circulating feeding channel flows normally within a set pressure range and prevent fluid backflow.

[0077] The present utility model further provides a coater, including a coating roller and a feeding device of the coater. The specific structure of the feeding device of the coater refers to the above embodiments. Since this coater adopts all the technical solutions of all the above embodiments, it at least has all the technical effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here. Among them, at least part of the coating roller is arranged in the material box and is used to coat the slurry in the material box onto the foil or plastic film.

[0078] The above are only partial or preferred embodiments of the present utility model. Whether in terms of text or drawings, the scope of protection of the present utility model cannot be limited thereby. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the overall concept of the present utility model, or any direct / indirect application in other related technical fields is included in the scope of protection of the present utility model.

Claims

1. A feeding device for a coating machine, characterized in that, Comprising: A storage tank, the storage tank being formed with a first feed inlet and a first discharge outlet; A material tray, the material tray being formed with a second feed inlet and a second discharge outlet; A first material transfer pump, the first material transfer pump being disposed between the first discharge outlet and the second feed inlet for transferring the slurry in the storage tank to the material tray; A second material transfer pump, the second material transfer pump being disposed between the second discharge outlet and the first feed inlet for transferring the slurry in the material tray to the storage tank; The first discharge outlet, the first material transfer pump, the second feed inlet, the second discharge outlet, the second material transfer pump, and the first feed inlet are sequentially connected and form a circulating material transfer channel; The coating machine feeding device further comprises: A first monitoring device, the first monitoring device being installed on the material tray for monitoring the weight and / or liquid level of the slurry in the material tray; A controller, the controller being communicatively connected to the first monitoring device for controlling the coating machine feeding device to stop operating when it is determined according to the information fed back by the first monitoring device that the weight or liquid level of the slurry in the material tray exceeds the upper and lower limits of a first preset range.

2. The coating machine feeding device according to claim 1, characterized in that The second feed inlet is disposed at the bottom of the material tray; and / or, the second discharge outlet is disposed at the side of the material tray.

3. The coating machine feeding device according to claim 1, characterized in that, The material tray further comprises a base, the base being disposed below the material tray; The first monitoring device comprises a cantilever beam single-point weighing sensor installed between the base and the bottom of the material tray.

4. The coating machine feeding device according to any one of claims 1 to 3, characterized in that The storage tank is further provided with a diversion pipe, the diversion pipe comprising a first pipe section and a second pipe section, the first pipe section extending from the first feed inlet into the storage tank, and the second pipe section extending from one end of the first pipe section away from the first feed inlet to the inner side wall of the storage tank.

5. The coating machine feeding device according to claim 4, characterized in that, The second pipe section comprises at least one V-shaped bending structure; or, The second pipe section is arranged in a wavy shape; or, The second pipe section extends from one end of the first pipe section away from the first feed inlet to the inner side wall of the storage tank along a straight track or an arc track.

6. The coating machine feeding device according to any one of claims 1 to 3, characterized in that The coating machine feeding device further comprises a second monitoring device, the second monitoring device being installed on the storage tank for monitoring the weight and / or liquid level of the slurry in the storage tank, the controller being communicatively connected to the second monitoring device for controlling the coating machine feeding device to stop operating when it is determined according to the information fed back by the second monitoring device that the weight or liquid level of the slurry in the storage tank exceeds the upper and lower limits of a second preset range; and / or, The coating machine feeding device further comprises a first back pressure valve, the first back pressure valve being disposed between the second material transfer pump and the first feed inlet.

7. The coating machine feeding device according to any one of claims 1 to 3, characterized in that A stirring mechanism is provided inside the storage tank; and / or, The storage tank is provided with an observation window and a sight glass lamp.

8. The coating machine feeding device according to any one of claims 1 to 3, characterized in that The coating machine feeding device further includes a particle filter, a pressure gauge and a drain valve. The particle filter is arranged between the first feed pump and the second feed inlet for filtering the slurry conveyed from the first feed pump to the second feed inlet. The pressure gauge is connected to the particle filter for detecting the pressure inside the particle filter. The drain valve is connected to the particle filter for relieving the pressure of the particle filter when the pressure inside the particle filter exceeds a preset threshold; and / or, The coating machine feeding device further includes a second back pressure valve, and the second back pressure valve is arranged between the first feed pump and the second feed inlet.

9. A coating machine, characterized in that, It includes the coating machine feeding device according to any one of claims 1 to 8 and a coating roller at least partially disposed in the material tray.

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