Coating die head

Abstract

The utility model discloses a coating die head which comprises a die head main body provided with a material groove and a discharging lip, the die head main body is provided with a plurality of mounting grooves communicated with the discharging lip, and T-shaped blocks are arranged in the mounting grooves. A driving mechanism for driving the T-shaped block to move towards or away from the discharging lip is arranged on the die head main body; the piezoelectric ceramic coating die head further comprises a piezoelectric ceramic sensing module, a signal amplification module, a display module and a single chip microcomputer module; the output end of the piezoelectric ceramic sensing module is connected with the input end of the signal amplification module, the output end of the signal amplification module is connected with the input end of the single chip microcomputer module, and the output end of the single chip microcomputer module is connected with the input end of the display module and the input end of the driving mechanism. According to the utility model, the thickness of slurry can be measured at the discharge lip, so that the coating thickness is adjusted in time, the production efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to a coating die head. Background Art

[0002] In the extrusion coating equipment, the extrusion coating die is the most critical component of the entire equipment. The principle of the extrusion coating die is to design multiple T-blocks inside the die, measure the slurry thickness after coating, and adjust the gap between the T-block inside the die and the die through a closed loop to ensure the uniformity of the slurry discharge from the die.

[0003] In the existing technology, a thickness gauge is used to detect the thickness of the substrate coating, and then the T-shaped block is controlled to move to adjust the slurry thickness. This thickness measurement method requires coating a certain distance on the substrate first, resulting in waste of substrate and slurry, increasing production costs. In addition, adding a thickness gauge further increases equipment costs. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a coating die head, which can measure the slurry thickness at the discharge lip, thereby adjusting the coating thickness in time, improving production efficiency and reducing costs.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A coating die includes a die body provided with a material trough and a discharge lip, the die body is provided with a plurality of mounting grooves connected to the discharge lip, a T-block is provided in the mounting groove, and the die body is provided with a driving mechanism for driving the T-block to move toward or away from the discharge lip. The piezoelectric ceramic coating die also includes a piezoelectric ceramic sensing module, a signal amplification module, a display module and a single-chip computer module. The output end of the piezoelectric ceramic sensing module is connected to the input end of the signal amplification module, the output end of the signal amplification module is connected to the input end of the single-chip computer module, and the output end of the single-chip computer module is connected to the input end of the display module and the input end of the driving mechanism.

[0007] As a further improvement of the above technical solution, the die head body includes an upper die and a lower die that cooperate with each other, an upper die lip is formed on the bottom of the upper die close to the lower die, and a lower die lip is formed on the top of the lower die close to the upper die, and the upper die lip and the lower die lip form the discharge lip.

[0008] As a further improvement of the above technical solution, the piezoelectric ceramic sensor module includes a plurality of piezoelectric ceramic sensor plates, which are arranged on the lower die lip, and the plurality of piezoelectric ceramic sensor plates are arranged one-to-one directly below the plurality of T-blocks.

[0009] As a further improvement of the above technical solution, the lower mold is provided with a plurality of mounting grooves connected to the lower mold lip, the piezoelectric ceramic sensor piece is arranged in the mounting groove, and the surface of the piezoelectric ceramic sensor piece is flush with the surface of the lower mold lip.

[0010] As a further improvement of the above technical solution, the signal amplification module includes an impedance conversion amplifier.

[0011] As a further improvement of the above technical solution, the single chip microcomputer module includes a calibration submodule, and the calibration submodule is used to calibrate the thickness of the coating slurry.

[0012] As a further improvement of the above technical solution, the display module includes an oscilloscope.

[0013] As a further improvement of the above technical solution, the display module includes a display screen.

[0014] As a further improvement of the above technical solution, the driving mechanism includes a piezoelectric ceramic motor, and the output end of the piezoelectric ceramic motor is connected to an end of the T-block away from the discharge lip.

[0015] As a further improvement of the above technical solution, the driving mechanism includes an electric cylinder, and the output end of the electric cylinder is connected to the end of the T-block away from the discharge lip.

[0016] The beneficial effect of the present invention is that when the coating slurry flows in the discharge lip, the hydraulic pressure of the coating slurry is proportional to the thickness of the slurry. The present invention senses the pressure of the coating slurry through the piezoelectric effect of the piezoelectric ceramic sensing module, and then amplifies the charge signal through the signal amplification module. After processing by the single-chip computer module, the pressure is obtained, and calibration is performed according to the pressure to obtain the thickness. The pressure value and the slurry thickness value are then displayed through the display module. At the same time, the single-chip computer module controls the driving mechanism to move the T-block according to demand, thereby adjusting the thickness of the coating slurry discharged at the T-block, and adjusting the displacement of several of the T-blocks respectively to make the coating thickness uniform.

[0017] In addition, the present invention measures the thickness of the coating slurry inside the discharge lip, and does not need to measure the thickness after coating on the substrate. This allows for timely adjustment of the coating thickness, improves production efficiency, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of detecting the thickness of the coating slurry in the piezoelectric ceramic coating die head according to an embodiment of the present utility model;

[0020] Figure 2This is a schematic structural diagram of a piezoelectric ceramic coating die head according to an embodiment of the present invention;

[0021] Figure 3 1 is a top view of a piezoelectric ceramic coating die head according to an embodiment of the present invention;

[0022] Figure 4 yes Figure 3 Middle AA section view;

[0023] Figure 5 yes Figure 3 Middle BB cross-section;

[0024] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0025] Figure numerals: 1, upper die; 2, lower die; 3, discharge lip; 4, piezoelectric ceramic motor; 5, T-block; 6, piezoelectric ceramic sensor. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. For example, the fixed connection / installation can be connected by screws, bolts and other accessories, or it can be directly connected by welding, bonding and other methods. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0027] Reference Figures 1-6 , an embodiment of the utility model provides a coating die head, including a die head body provided with a material trough and a discharge lip 3. Specifically, the die head body includes an upper die 1 and a lower die 2 that cooperate with each other, and an upper die lip is formed on the bottom of the upper die 1 close to the lower die 2, and a lower die lip is formed on the top of the lower die 2 close to the upper die 1. The upper die lip and the lower die lip form the discharge lip 3, and the upper die 1 is provided with a plurality of mounting grooves connected to the discharge lip 3, and a T-block 5 is provided in the mounting groove. The upper die 1 is provided with a driving mechanism for driving the T-block 5 to move toward or away from the discharge lip 3, thereby adjusting the thickness of the coating slurry.

[0028] Reference Figure 1The piezoelectric ceramic coating die head also includes a piezoelectric ceramic sensing module (a piezoelectric ceramic sensing module is a sensor device based on piezoelectric ceramic materials. It utilizes the positive piezoelectric effect of piezoelectric ceramics, that is, when piezoelectric ceramics are subjected to external forces, electric charges are generated on their surface, thereby converting mechanical energy into electrical energy. This module is usually composed of piezoelectric ceramic sheets, electrodes, and packaging materials. The piezoelectric coefficient of piezoelectric ceramics is high, and it can sense changes in physical quantities such as tiny forces, pressures, and vibrations, and convert them into electrical signals for output, and has good response capabilities to weak signals), a signal amplification module (a signal amplification module is an electronic device component used to enhance the amplitude of an input signal, usually based on electronic components such as transistors or operational amplifiers. When the input signal enters the amplification module, the signal is amplified by the action of these electronic components. Taking the operational amplifier as an example, it utilizes the characteristics of differential input and high gain to amplify the input signal at a certain ratio and output an enhanced signal. The amplification factor is determined by external components such as feedback resistors and can be adjusted according to actual needs), a display module (a display module is a device component used to convert an electrical signal into a visual image or text information. Common display modules The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module. The piezoelectric ceramic sensing module comprises a piezoelectric ceramic sensing module, a piezoelectric ceramic sensing module and a piezoelectric ceramic sensing module.

[0029] In the above embodiment, the piezoelectric ceramic sensor module senses the pressure of the coating slurry and generates an electric charge under the piezoelectric effect. The electric charge is transferred to the signal amplification module for amplification. The single-chip microcomputer module obtains the pressure after processing the charge signal and displays the pressure value through the display module. At the same time, the single-chip microcomputer module is calibrated according to the relationship between pressure and slurry thickness (the pressure value and slurry thickness are measured in advance to obtain the relationship between the two), thereby obtaining the size of the slurry thickness. The slurry thickness value is then displayed through the display module, which facilitates the staff to intuitively understand the coating thickness. At the same time, the single-chip microcomputer module controls the drive mechanism to move the T-block 5 according to the required coating thickness, thereby adjusting the thickness of the coating slurry discharged from the T-block 5 to achieve the required coating thickness.

[0030] In this embodiment, referring to Figure 4-Figure 6 The piezoelectric ceramic sensor module includes a plurality of piezoelectric ceramic sensor pieces 6, which are arranged on the lower die lip, and a plurality of the piezoelectric ceramic sensor pieces 6 are arranged one by one directly below the plurality of T-blocks 5. Since the length of the discharge lip 3 is generally long, the hydraulic pressure of the coating slurry at each position along its length direction may be inconsistent. Therefore, a plurality of T-blocks 5 are arranged to adjust the coating thickness at multiple positions to make the hydraulic pressure of the coating slurry consistent, and thus make the coating thickness uniform. Therefore, a plurality of the piezoelectric ceramic sensor pieces 6 are correspondingly arranged to detect the slurry pressure and thickness at multiple positions in the length direction of the discharge lip 3 in real time, thereby adjusting the displacement of the plurality of T-blocks 5 respectively to make the coating thickness uniform and improve the coating quality.

[0031] Furthermore, the lower die 2 is provided with several mounting grooves that communicate with the lower die lip. The piezoelectric ceramic sensor plate 6 is mounted in these grooves, and its surface is flush with the surface of the lower die lip. This arrangement prevents the coating slurry from flowing unimpeded by the piezoelectric ceramic sensor plate 6, ensuring stable and smooth flow and improving coating quality.

[0032] In this embodiment, the signal amplification module includes an impedance conversion amplifier (RL). Specifically, the electrical signal from the force F sensed by the piezoelectric ceramic sensor 6 is amplified by the impedance conversion amplifier. Since the piezoelectric ceramic sensor 6 has a high internal resistance and a weak signal, it cannot generally be directly displayed or recorded. Therefore, an impedance conversion amplifier is required to perform impedance conversion and signal amplification, and a high-impedance output is required. The converted charge can be directly displayed on a display module (oscilloscope), thereby obtaining the magnitude of the force F.

[0033] In this embodiment, the single-chip microcomputer module includes a calibration submodule (the calibration submodule is a logic operation instruction pre-stored in the program memory of the single-chip microcomputer). The calibration submodule is used to process the signal data transmitted by the impedance conversion amplifier, and obtain the coating slurry thickness through the relationship between the pre-measured pressure value and the slurry thickness value, and then display it through the display module (display screen).

[0034] In this embodiment, the driving mechanism includes a piezoelectric ceramic motor 4, the output end of the piezoelectric ceramic motor 4 is connected to the end of the T-block 5 away from the discharge lip 3, and the single-chip microcomputer module compares the measured coating slurry thickness with the set coating slurry thickness, controls the piezoelectric ceramic motor 4 to drive the T-block 5 to move, adjusts the coating slurry thickness, and completes the adjustment of the coating thickness.

[0035] In other embodiments, the driving mechanism includes an electric cylinder, the output end of the electric cylinder is connected to the end of the T-block 5 away from the discharge lip 3, and the single-chip microcomputer module compares the measured coating slurry thickness with the set coating slurry thickness, controls the electric cylinder to drive the T-block 5 to move, adjusts the coating slurry thickness, and completes the adjustment of the coating thickness.

[0036] In other embodiments, the driving mechanism may also adopt linear driving components such as stepping motors, linear motors, air cylinders, hydraulic cylinders, etc.

[0037] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A coating die, comprising a die body provided with a material trough and a discharge lip, the die body provided with a plurality of mounting grooves communicating with the discharge lip, the mounting grooves provided with T-blocks, and the die body provided with a drive mechanism for driving the T-blocks toward or away from the discharge lip, characterized in that: It also includes a piezoelectric ceramic sensing module, a signal amplification module, a display module and a single-chip computer module. The output end of the piezoelectric ceramic sensing module is connected to the input end of the signal amplification module, the output end of the signal amplification module is connected to the input end of the single-chip computer module, and the output end of the single-chip computer module is connected to the input end of the display module and the input end of the driving mechanism.

2. A coating die head according to claim 1, characterized in that: The die head body includes an upper die and a lower die that cooperate with each other. The bottom of the upper die is formed with an upper die lip on the side close to the lower die, and the top of the lower die is formed with a lower die lip on the side close to the upper die. The upper die lip and the lower die lip form the discharge lip.

3. A coating die head according to claim 2, characterized in that: The piezoelectric ceramic sensor module includes a plurality of piezoelectric ceramic sensor pieces, which are arranged on the lower die lip, and the plurality of piezoelectric ceramic sensor pieces are arranged in a one-to-one correspondence directly below the plurality of T-blocks.

4. A coating die head according to claim 3, characterized in that: The lower die is provided with a plurality of mounting grooves communicated with the lower die lip. The piezoelectric ceramic sensor pieces are arranged in the mounting grooves, and the surface of the piezoelectric ceramic sensor pieces is flush with the surface of the lower die lip.

5. A coating die head according to claim 1, characterized in that: The signal amplification module includes an impedance conversion amplifier.

6. A coating die head according to claim 1, characterized in that: The single chip microcomputer module includes a calibration submodule, and the calibration submodule is used to calibrate the thickness of the coating slurry.

7. A coating die head according to claim 1, characterized in that: The display module includes an oscilloscope.

8. A coating die head according to claim 1, characterized in that: The display module includes a display screen.

9. A coating die according to any one of claims 1 to 8, characterized in that: The driving mechanism includes a piezoelectric ceramic motor, and the output end of the piezoelectric ceramic motor is connected to an end of the T-block away from the discharge lip.

10. A coating die according to any one of claims 1 to 8, characterized in that: The driving mechanism includes an electric cylinder, and the output end of the electric cylinder is connected to the end of the T-block away from the discharge lip.

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