Piezoelectric ceramic coating die head

Abstract

The utility model discloses a piezoelectric ceramic coating die head which comprises a die head main body and a discharge lip arranged on the die head main body, and the die head main body is provided with a plurality of through holes communicated with the discharge lip and T-shaped blocks arranged in the through holes. The die head body is further provided with an adjusting mechanism used for driving the T-shaped block to move towards or away from the discharging lip, the adjusting mechanism comprises two oppositely-arranged piezoelectric ceramic modules and a metal rod arranged between the two piezoelectric ceramic modules, and the metal rod is connected with the T-shaped block. The two piezoelectric ceramic modules cooperate with each other to drive the metal rod to move. According to the piezoelectric ceramic coating die head, the problem that the prior art is limited by the size of a servo motor can be solved, so that the arrangement density of the T-shaped blocks is improved, and the coating closed-loop control precision is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to a piezoelectric ceramic 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] Currently, there are two ways to adjust T-blocks in the industry: manual adjustment through a micrometer or closed-loop adjustment using a servo motor or stepper motor to drive an electric cylinder. Manual adjustment through a micrometer is highly dependent on worker experience, has low adjustment efficiency, and high labor costs. Adjustment through a servo motor or stepper motor to drive an electric cylinder is more expensive and, due to the size limitations of the servo motor, has a low T-block arrangement density and low coating closed-loop control accuracy. Utility Model Content

[0004] The utility model provides a piezoelectric ceramic coating die head to solve the problems of the prior art that the size of the servo motor is limited, the arrangement density of T-blocks is low, and the coating closed-loop control precision is low.

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

[0006] A piezoelectric ceramic coating die comprises a die body and a discharge lip arranged on the die body, so the die body is provided with a plurality of through holes connected to the discharge lip and a T-block installed in the through holes. The die body is also provided with an adjustment mechanism for driving the T-block to move toward or away from the discharge lip. The adjustment mechanism comprises two relatively arranged piezoelectric ceramic modules and a metal rod arranged between the two piezoelectric ceramic modules. The metal rod is connected to the T-block, and the two piezoelectric ceramic modules cooperate with each other to drive the metal rod to move.

[0007] As a further improvement of the above technical solution, the piezoelectric ceramic module includes an upper piezoelectric ceramic and a lower piezoelectric ceramic arranged horizontally, and a middle piezoelectric ceramic arranged vertically, the two ends of the middle piezoelectric ceramic are respectively connected to a first metal fixing block and a second metal fixing block, the second metal block is fixedly connected to the top of the die body, the end of the upper piezoelectric ceramic away from the metal rod is connected to the first metal block, and the end of the lower piezoelectric ceramic away from the metal rod is connected to the second metal block.

[0008] As a further improvement of the above technical solution, the upper piezoelectric ceramics in the two piezoelectric ceramic modules are held against both sides of the upper portion of the metal rod, and the two lower piezoelectric ceramics are held against both sides of the lower portion of the metal rod.

[0009] 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.

[0010] As a further improvement of the above technical solution, a guide sleeve is provided at the top of the through hole, and the top of the T-block is slidably connected in the center hole of the guide sleeve, and the guide sleeve is used to limit the movement direction of the T-block.

[0011] As a further improvement of the above technical solution, a first sealing ring is provided on the inner side of the guide sleeve, and the T-block is inserted into the first sealing ring.

[0012] As a further improvement of the above technical solution, a second sealing ring is provided at the bottom of the T-block, and the second sealing ring is slidably connected to the through hole.

[0013] As a further improvement of the above technical solution, a material trough and a slow flow trough are further provided on the top side of the lower mold close to the upper mold.

[0014] As a further improvement of the above technical solution, a gasket is provided between the upper die and the lower die, and the gasket is fixed to the bottom of the upper die by a locking member, and the locking member is located above the material trough.

[0015] As a further improvement of the above technical solution, the locking member includes a pressure strip and a locking screw, the pressure strip is provided with a through hole, the bottom of the upper mold is provided with a threaded hole, and the locking screw passes through the through hole and is threadedly connected to the threaded hole.

[0016] The beneficial effect of the present invention is that the servo motor is replaced by the piezoelectric ceramic module. Since the piezoelectric ceramic is relatively small in size, it can solve the problem of the existing technology being limited by the size of the servo motor, thereby increasing the arrangement density of the T-block and further improving the coating closed-loop control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the assembly of the piezoelectric ceramic coating die head of the utility model;

[0019] Figure 2 yes Figure 1 A partial enlarged view of the middle part;

[0020] Figure 3 This is a top view of the piezoelectric ceramic coating die head of the utility model;

[0021] Figure 4 yes Figure 3 Cross-sectional view of AA;

[0022] Figure 5 yes Figure 3 Cross-sectional view of the middle BB;

[0023] Figure 6 This is a schematic diagram of the state in which the piezoelectric ceramic module in the utility model drives the metal rod to move upward.

[0024] Figure markings: 1. Upper mold; 2. Lower mold; 21. Material trough; 22. Slow flow trough; 3. Discharge lip; 4. Adjustment mechanism; 41. Metal rod; 42. Piezoelectric ceramic module; 421. Upper piezoelectric ceramic; 422. First metal fixing block; 423. Middle piezoelectric ceramic; 424. Second metal fixing block; 425. Lower piezoelectric ceramic; 5. Gasket; 6. T-block; 7. Guide sleeve; 8. First sealing ring; 9. Second sealing ring; 10. Pressure strip; 11. Locking screw. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1-Figure 5An embodiment of the present invention provides a piezoelectric ceramic coating die, including a die body and a discharge lip 3 arranged on the die body, so the die body is provided with a plurality of through holes arranged in a row and connected to the discharge lip 3, each of the through holes is provided with a T-block 6, each of the T-block 6 is connected to an adjustment mechanism 4, the adjustment mechanism 4 drives the T-block 6 to move toward or away from the discharge lip 3, specifically, the adjustment mechanism 4 includes two relatively arranged piezoelectric ceramic modules 42 and a metal rod 41 arranged between the two piezoelectric ceramic modules 42, the metal rod 41 is connected to the T-block 6, and the two piezoelectric ceramic modules 42 cooperate with each other to drive the metal rod 41 to move.

[0027] In this embodiment, referring to Figure 4 The die head body includes an upper die 1 and a lower die 2 that cooperate with each other. The bottom of the upper die 1 is formed with an upper die lip on the side close to the lower die 2, and the top of the lower die 2 is formed with a lower die lip on the side close to the upper die 1. The upper die lip and the lower die lip form the discharge lip 3. The top of the lower die 2 is also provided with a material trough 21 and a slow flow trough 22 connected to the discharge lip 3 on the side close to the upper die 1. The material trough 21 is used to provide coating slurry, and the slow flow trough 22 shapes the slurry flowing through the T-block 6 so that the slurry flows out evenly.

[0028] Preferably, a gasket 5 is provided between the upper mold 1 and the lower mold 2. The gasket 5 is fixed to the bottom of the upper mold 1 by a locking member, and the locking member is located above the material trough 21. Specifically, the locking member includes a pressure strip 10 and a locking screw 11. The pressure strip 10 is provided with a through hole, and the bottom of the upper mold 1 is provided with a threaded hole. The locking screw 11 passes through the through hole and is threadedly connected to the threaded hole, locking the pressure strip 10 to the bottom of the upper mold 1, thereby completing the fixed installation of the gasket 5.

[0029] In some embodiments, reference Figure 3 and Figure 4 A guide sleeve 7 is provided at the top of the through hole, and the top of the T-block 6 is slidably connected in the center hole of the guide sleeve 7. The guide sleeve 7 is used to limit the movement direction of the T-block 6, that is, to ensure that the T-block 6 is stably lifted and lowered.

[0030] Furthermore, a second sealing ring 9 is provided at the bottom of the T-block 6. The second sealing ring 9 is slidably connected to the through hole, and the second sealing ring 9 is used to seal the T-block 6 and the through hole to prevent slurry from overflowing. A first sealing ring 8 is provided on the inner side of the guide sleeve 7. The T-block 6 is inserted into the first sealing ring 8. The first sealing ring 8 is used to seal the guide sleeve 7 and the T-block 6 to further prevent slurry from overflowing.

[0031] In this embodiment, referring to Figure 2 The piezoelectric ceramic module 42 includes an upper piezoelectric ceramic 421, a lower piezoelectric ceramic 425, and a middle piezoelectric ceramic 423. Each of the upper, lower, and middle piezoelectric ceramics 421, 425, and 423 is electrically connected to an external power supply via wires to control the voltages of the upper, lower, and middle piezoelectric ceramics 421, 425, and 423. The upper and lower piezoelectric ceramics 421, 425, and 423 are arranged horizontally, while the middle piezoelectric ceramic 423 is arranged vertically. The upper end of the middle piezoelectric ceramic 423 is connected to the end of the upper piezoelectric ceramic 421 via a first metal fixing block 422, which is the end of the upper piezoelectric ceramic 421 away from the other piezoelectric ceramic module 42. The lower end of the middle piezoelectric ceramic 423 is connected to the end of the lower piezoelectric ceramic 425 away from the other piezoelectric ceramic module 42 via a second metal fixing block 424. The second metal fixing block 424 is connected to the top of the upper mold 1. The two piezoelectric ceramic modules 42 are symmetrically arranged based on the metal rod 41 to form a Chinese-shaped structure, that is, the upper piezoelectric ceramics 421 in the two piezoelectric ceramic modules 42 are supported on both sides of the upper part of the metal rod 41, and the two lower piezoelectric ceramics 425 are supported on both sides of the lower part of the metal rod 41.

[0032] Specifically, the process of the two piezoelectric ceramic modules 42 cooperating to drive the metal rod 41 to rise and fall is as follows. Taking the rise of the metal rod 41 (the descending process of the metal rod 41 is the opposite) as an example, refer to Figure 6 :

[0033] S1, the two upper piezoelectric ceramics 421 reduce the voltage and contract to loosen the metal rod 41, that is, the metal rod 41 is in a state where the upper end is not clamped and the lower end is clamped;

[0034] S2, the two middle piezoelectric ceramics 423 reduce the voltage and shrink, driving the two upper piezoelectric ceramics 421 to move downward;

[0035] S3, the two upper piezoelectric ceramics 421 increase the voltage to clamp the metal rod 41;

[0036] S4, the two lower piezoelectric ceramics 425 reduce the voltage and contract to loosen the metal rod 41, that is, the metal rod 41 is in a state where the lower end is not clamped and the upper end is clamped;

[0037] S5, the two middle piezoelectric ceramics 423 increase the voltage and stretch, driving the two upper piezoelectric ceramics 421 to move upward, that is, driving the metal rod 41 to move upward;

[0038] S6 , the two lower piezoelectric ceramics 425 increase the voltage to clamp the metal rod 41 , thereby fixing the position of the metal rod 41 .

[0039] In this invention, two piezoelectric ceramic modules 42 are used to raise and lower the metal rod 41. These rods 41 are integrally formed at the upper end of the T-block 6, thereby enabling the raising and lowering of the T-block 6. This allows for adjustment of the discharge slit gap, and thus, the coating slurry thickness. Using two piezoelectric ceramic modules 42 to drive the raising and lowering of the T-block 6 overcomes the limitations of the servo motor size in the prior art, allowing for a higher density of T-block 6 arrangements and, consequently, improved closed-loop coating control accuracy.

[0040] 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 piezoelectric ceramic coating die, comprising a die body and a discharge lip disposed on the die body, wherein the die body is provided with a plurality of through holes communicating with the discharge lip and T-shaped blocks mounted within the through holes, and the die body is further provided with an adjustment mechanism for driving the T-shaped blocks toward or away from the discharge lip, characterized in that: The adjustment mechanism includes two piezoelectric ceramic modules arranged opposite to each other and a metal rod arranged between the two piezoelectric ceramic modules. The metal rod is connected to the T-block. The two piezoelectric ceramic modules cooperate with each other to drive the metal rod to move.

2. The piezoelectric ceramic coating die according to claim 1, characterized in that: The piezoelectric ceramic module includes a transversely arranged upper piezoelectric ceramic and a lower piezoelectric ceramic, and a vertically arranged middle piezoelectric ceramic. The two ends of the middle piezoelectric ceramic are respectively connected to a first metal fixing block and a second metal fixing block. The second metal fixing block is fixedly connected to the top of the die body. The end of the upper piezoelectric ceramic away from the metal rod is connected to the first metal fixing block, and the end of the lower piezoelectric ceramic away from the metal rod is connected to the second metal fixing block.

3. The piezoelectric ceramic coating die according to claim 2, characterized in that: The upper piezoelectric ceramics in the two piezoelectric ceramic modules are held against both sides of the upper portion of the metal rod, and the two lower piezoelectric ceramics are held against both sides of the lower portion of the metal rod.

4. The piezoelectric ceramic coating die 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.

5. The piezoelectric ceramic coating die according to claim 4, characterized in that: A guide sleeve is provided at the top of the through hole, and the top of the T-block is slidably connected in the center hole of the guide sleeve. The guide sleeve is used to limit the movement direction of the T-block.

6. The piezoelectric ceramic coating die according to claim 5, characterized in that: A first sealing ring is provided on the inner side of the guide sleeve, and the T-block is passed through the first sealing ring.

7. The piezoelectric ceramic coating die according to claim 6, characterized in that: A second sealing ring is provided at the bottom of the T-block, and the second sealing ring is slidably connected to the through hole.

8. The piezoelectric ceramic coating die according to claim 4, characterized in that: A material trough and a slow flow trough are also provided on one side of the top of the lower mold close to the upper mold.

9. The piezoelectric ceramic coating die according to claim 8, characterized in that: A gasket is provided between the upper die and the lower die. The gasket is fixed to the bottom of the upper die through a locking member. The locking member is located above the material trough.

10. The piezoelectric ceramic coating die according to claim 9, characterized in that: The locking member includes a pressure strip and a locking screw. The pressure strip is provided with a through hole. The bottom of the upper mold is provided with a threaded hole. The locking screw passes through the through hole and is threadedly connected to the threaded hole.

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