Multi-layer ceramic side electrode printing device and printing method thereof

Abstract

The invention belongs to the technical field of piezoelectric ceramic high-precision printing, and relates to a multi-layer ceramic side electrode printing device and a printing method.The printing device comprises a feeding mechanism, a rotary workbench, a transfer printing mechanism, a heating mechanism, a discharging mechanism and a cleaning mechanism; the bearing jig is used for bearing ceramic chips, the ceramic chips and the bearing jig are in interference fit, the transfer printing mechanism is used for printing the ceramic chips, the heating mechanism is used for drying the printed ceramic chips and the bearing jig at the same time, and the discharging mechanism is used for carrying the dried ceramic chips to a downstream concentrated burning bearing plate. And the cleaning mechanism is used for cleaning the discharged bearing jig. According to the invention, the full coverage of the electrode on the side surface of the ceramic wafer during printing can be ensured, the pollution to the bottom of the ceramic wafer can be avoided, and meanwhile, the cleanliness of the bearing jig entering the next cycle can be ensured, and the pollution to the next printed ceramic wafer can be avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of piezoelectric ceramic high-precision printing, and particularly relates to a multilayer ceramic side electrode printing device and a printing method thereof. BACKGROUND

[0002] With the rapid progress of science and technology, piezoelectric ceramics, as a material capable of realizing conversion between mechanical energy and electrical energy, are widely used in many fields such as automotive electronics and consumer electronics.

[0003] The multilayer structure design of piezoelectric ceramics helps to increase the effective piezoelectric coefficient, improve the energy conversion efficiency, and also improve the mechanical strength and stability of the ceramic sheet, and the reliability and stability of the connection of each layer of the multilayer ceramic are technical problems that have plagued the development of the industry.

[0004] At present, the connection forms of multilayer ceramics are basically divided into side connection and small hole connection in the middle, and the small hole connection has a high cost due to the presence of noble metals in the slurry. In the case of a large number of layers, side connection is preferred, and side connection is divided into pad printing, screen printing and transfer printing. However, no matter which connection method is used, the side printing part of the layer will not be completely connected due to the printing tolerance problem, i.e. the problem of missing layers or printing pollution of the ceramic bottom. Therefore, there is an urgent need to design a new printing scheme to solve the above problems. SUMMARY

[0005] The purpose of the present application is to solve the problem of missing layers or printing pollution of the ceramic bottom in the side printing of the prior art, and to provide a multilayer ceramic side electrode printing device and a printing method thereof, which can ensure full coverage of electrode printing and avoid pollution of the ceramic bottom.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: a multilayer ceramic side electrode printing device, comprising a feeding mechanism, a rotary workbench, a pad printing mechanism, a heating mechanism, a discharging mechanism and a cleaning mechanism, the feeding mechanism places a ceramic sheet on a bearing jig of the rotary workbench, and the ceramic sheet is in interference fit with the bearing jig, the pad printing mechanism prints the ceramic sheet, the heating mechanism simultaneously performs drying treatment on the printed ceramic sheet and the bearing jig, the discharging mechanism carries the ceramic sheet that has completed the drying treatment to a downstream centralized bearing plate, and the cleaning mechanism performs cleaning treatment on the bearing jig after discharging.

[0007] The rotary workbench comprises a turntable capable of being index-rotated, a plurality of bearing jigs are uniformly and interval distributed in the circumferential direction of the turntable, the bearing jigs have bearing grooves in interference fit with the ceramic sheet, and the bottom of the bearing groove has a negative pressure suction port.

[0008] The feeding mechanism and the discharging mechanism both comprise a negative pressure suction nozzle matched with the ceramic sheet.

[0009] The pad printing mechanism comprises a liftable and movable silica gel printing head, and the pattern size of the silica gel printing head is greater than the side size of the ceramic sheet.

[0010] The heating mechanism comprises a heating groove in the shape of "[", and the upper and lower ends of the heating groove are arranged on the upper and lower sides of the rotary table, respectively.

[0011] The cleaning mechanism comprises a dry ice nozzle.

[0012] A multilayer ceramic side electrode printing method using the above multilayer ceramic side electrode printing device comprises the following steps:

[0013] S1, the feeding mechanism carries the ceramic sheet to the bearing jig of the rotary table through the negative pressure suction nozzle, the bearing jig adsorbs the ceramic sheet through the negative pressure suction port at the bottom of the bearing groove, and the ceramic sheet is in interference fit in the bearing groove;

[0014] S2, the rotary table drives the ceramic sheet to rotate to the pad printing mechanism, the silica gel printing head of the pad printing mechanism moves downward to print the ceramic sheet, and after the printing is completed, the silica gel printing head is reset upward and self-cleaning;

[0015] S3, the rotary table continues to rotate, and the ceramic sheet after printing is rotated to the heating mechanism, and the heating mechanism performs heating and drying treatment on the ceramic sheet;

[0016] S4, the ceramic sheet after the heating and drying treatment is rotated to the discharging mechanism under the driving of the rotary table, the ceramic sheet is taken off from the bearing jig by the negative pressure suction nozzle and carried to the downstream concentrated bearing plate;

[0017] S5, the bearing jig after discharging continues to rotate to the cleaning mechanism, and the cleaning mechanism performs cleaning treatment on the bearing jig through the dry ice nozzle for printing of the next ceramic sheet;

[0018] S6, the above steps are repeated.

[0019] Preferably, in the step S2, the part of the pattern size of the silica gel printing head that is greater than the side size of the ceramic sheet is printed on the bearing jig.

[0020] Preferably, in the step S3, the heating mechanism simultaneously performs heating and drying treatment on the ceramic sheet and the bearing jig matched therewith.

[0021] After the above technical solution is adopted, the multilayer ceramic side electrode printing device and the printing method thereof provided by the application have the following beneficial effects:

[0022] The present application can ensure that the bottom of the piezoelectric ceramic sheet is not polluted during printing, and can effectively ensure that the piezoelectric ceramic does not short circuit after being bonded with the substrate during use; through the design that the pattern size of the silicone printing head of the pad printing mechanism is greater than the side size of the ceramic sheet, it can ensure that the side electrode is fully covered during printing, and the performance degradation problem caused by the fact that part of the layers are not connected due to incomplete coverage of the side during printing; through the design that the heating mechanism heats and dries the ceramic sheet while heating and drying the bearing fixture, and the design that the cleaning mechanism separately cleans the bearing fixture with dry ice, it can ensure that the next printed product is not polluted, that is, effectively ensure the quality of the next printed product. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure schematic view of the multi-layer ceramic side electrode printing device.

[0024] Among them: feeding mechanism 1, rotating workbench 2, pad printing mechanism 3, heating mechanism 4, discharging mechanism 5, cleaning mechanism 6, bearing fixture 7, turntable 8, negative pressure suction port 9. DETAILED DESCRIPTION

[0025] The present application will be further described in connection with the drawings and specific embodiments, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the application and use or use of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0026] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0027] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with full equivalents thereof.

[0028] In the description of the present application, it is to be understood that the orientation terms such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "horizontal", "top", "bottom", etc. indicate the orientation or positional relationship shown in the drawings generally for the purpose of describing and simplifying the present application, and do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0029] For the purpose of description, spatial relative terms, such as "above", "upper", "up", "below", "lower", etc., can be used herein for describing the spatial relationship between one device or feature and another device or feature as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, the device described as "above" or "above" the other device or structure will be positioned "below" or "below" the other device or structure. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein should be interpreted accordingly.

[0030] In addition, it should be noted that the use of the terms "first", "second", etc. to describe various components is merely intended to distinguish one component from another, and the above terms do not have special meanings unless otherwise stated, and therefore cannot be construed as limiting the scope of protection of the present application.

[0031] As Figure 1The multi-layer ceramic side electrode printing device comprises a rotating workbench 2, and an upper feeding mechanism 1, a pad printing mechanism 3, a heating mechanism 4, a lower discharging mechanism 5 and a cleaning mechanism 6 which are distributed at the circumferential direction of the rotating workbench 2.

[0032] The rotating workbench 2 comprises a rotating disc 8 capable of performing index rotation, a plurality of bearing jigs 7 are uniformly distributed at the circumferential direction of the rotating disc 8, the bearing jigs 7 are provided with bearing grooves matched with ceramic sheets, the bottom of the bearing grooves is provided with a negative pressure suction port 9, the upper feeding mechanism 1 places the ceramic sheets on the bearing jigs 7 of the rotating workbench 2 through the negative pressure suction nozzle, the negative pressure suction port 9 adsorbs and fixes the ceramic sheets in the bearing grooves, specifically, the size of the ceramic sheets is 5 μm larger than that of the bearing grooves, that is, the negative pressure suction port 9 fits the ceramic sheets in the bearing grooves of the bearing jigs 7 in interference, thus the design can guarantee that the bottom of the piezoelectric ceramic sheet is not polluted during printing, and can effectively guarantee that the piezoelectric ceramic is not short-circuited after being bonded with the substrate in use, the pad printing mechanism 3 comprises a liftable and movable silica gel printing head, the silica gel printing head is used for printing the ceramic sheet, and the pattern size of the silica gel printing head is greater than the side size of the ceramic sheet, thus the design can guarantee that the side electrode is fully covered during printing, and the performance reduction problem caused by the fact that part of the layers are not connected due to the fact that the printing does not completely cover the side surface, the heating mechanism 4 comprises a heating groove designed in a “[” shape, the upper and lower ends of the heating groove are arranged at the upper and lower sides of the rotating disc 8, that is, the heating mechanism 4 is used for simultaneously drying the printed ceramic sheet and the bearing jigs 7, the lower discharging mechanism 5 also comprises a negative pressure suction nozzle, and the ceramic sheet which has completed the drying treatment can be taken off from the bearing jigs 7 through the negative pressure suction nozzle and carried to a downstream centralized bearing plate, the cleaning mechanism 6 comprises a dry ice nozzle, which is used for cleaning the bearing jigs 7 after discharging, and through the cooperation design of the heating mechanism 4 and the cleaning mechanism 6, the pollution to the next printing product can be ensured.

[0033] The method for printing by using the above multi-layer ceramic side electrode printing device comprises the following steps:

[0034] S1, the upper feeding mechanism 1 carries the ceramic sheet to the bearing jigs 7 of the rotating workbench 2 through the negative pressure suction nozzle, and the bearing jigs 7 adsorb the ceramic sheet through the negative pressure suction port at the bottom of the bearing groove, and fit the ceramic sheet in the bearing groove in interference;

[0035] S2, the rotating workbench 2 drives the ceramic sheet to rotate to the pad printing mechanism 3, the silica gel printing head of the pad printing mechanism 3 moves downward to print the ceramic sheet, and after the printing is completed, the silica gel printing head is reset upward and self-cleaning is performed;

[0036] S3, the rotating workbench 2 continues to rotate, and the ceramic sheet which has completed the printing is rotated to the heating mechanism 4, and the heating mechanism 4 performs heating and drying treatment on the ceramic sheet;

[0037] S4, the ceramic sheet after the heating drying treatment is driven by the rotating workbench 2 to the unloading mechanism 5, the unloading mechanism 5 takes the ceramic sheet from the supporting fixture 7 by the negative pressure suction nozzle and carries it to the downstream concentrated supporting plate;

[0038] S5, the supporting fixture 7 after unloading continues to rotate to the cleaning mechanism 6, the cleaning mechanism 6 cleans the supporting fixture 7 through the dry ice nozzle for the next ceramic sheet printing;

[0039] S6, repeat the above steps.

[0040] In the above step S2, the part of the pattern size of the silica gel printing head which is larger than the side size of the ceramic sheet will be printed on the supporting fixture 7.

[0041] In the above step S3, the heating mechanism 4 simultaneously performs heating and drying treatment on the ceramic sheet and the matched supporting fixture 7.

[0042] In summary, the multi-layer ceramic side electrode printing device and the printing method thereof can ensure that the side electrode of the ceramic sheet is fully covered during printing, and can ensure that the bottom of the ceramic sheet is not contaminated, and can also ensure the cleanliness of the supporting fixture when it enters the next cycle, and will not contaminate the next printed ceramic sheet.

[0043] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A multilayer ceramic lateral electrode printing apparatus, characterized by: The device comprises a feeding mechanism (1), a rotating workbench (2), a pad printing mechanism (3), a heating mechanism (4), a discharging mechanism (5) and a cleaning mechanism (6). The feeding mechanism (1) places the ceramic sheet on the bearing fixture (7) of the rotating workbench (2), and the ceramic sheet is in interference fit with the bearing fixture (7). The pad printing mechanism (3) prints the ceramic sheet. The heating mechanism (4) simultaneously performs drying treatment on the printed ceramic sheet and the bearing fixture (7). The discharging mechanism (5) carries the ceramic sheet after drying treatment to the downstream concentrated bearing plate. The cleaning mechanism (6) cleans the bearing fixture (7) after discharging.

2. The multi-layer ceramic side electrode printing apparatus according to claim 1, wherein: The rotating workbench (2) comprises a rotating disc (8) capable of performing index rotation. A plurality of bearing fixtures (7) are uniformly distributed in the circumferential direction of the rotating disc (8). The bearing fixture (7) has a bearing groove in interference fit with the ceramic sheet. The bottom of the bearing groove has a negative pressure suction port (9).

3. The multi-layer ceramic side electrode printing apparatus of claim 1, wherein: The feeding mechanism (1) and the discharging mechanism (5) each comprise a negative pressure suction nozzle matched with the ceramic sheet.

4. The multi-layer ceramic side electrode printing apparatus of claim 1, wherein: The pad printing mechanism (3) comprises a liftable and movable silica gel printing head. The pattern size of the silica gel printing head is greater than the side size of the ceramic sheet.

5. The multi-layer ceramic side electrode printing apparatus of claim 2, wherein: The heating mechanism (4) comprises a "[”-shaped heating groove. The upper and lower ends of the heating groove are arranged on the upper and lower sides of the rotating disc (8), respectively.

6. The multi-layer ceramic side electrode printing apparatus of claim 1, wherein: The cleaning mechanism (6) comprises a dry ice nozzle.

7. A multilayer ceramic lateral electrode printing method, characterized by: The device comprises the following steps: S1. The feeding mechanism (1) carries the ceramic sheet to the bearing fixture (7) of the rotating workbench (2) through the negative pressure suction nozzle. The bearing fixture (7) adsorbs the ceramic sheet through the negative pressure suction port at the bottom of the bearing groove, and the ceramic sheet is in interference fit in the bearing groove. S2. The rotating workbench (2) drives the ceramic sheet to rotate to the pad printing mechanism (3). The silica gel printing head of the pad printing mechanism (3) moves downward to print the ceramic sheet. After printing, the silica gel printing head is reset upward and self-cleansed. S3. The rotating workbench (2) continues to rotate to drive the printed ceramic sheet to the heating mechanism (4). The heating mechanism (4) performs heating and drying treatment on the ceramic sheet. S4. The ceramic sheet after the heating and drying treatment is driven by the rotating workbench (2) to the discharging mechanism (5). The discharging mechanism (5) takes the ceramic sheet from the bearing fixture (7) through the negative pressure suction nozzle and carries it to the downstream concentrated bearing plate. S5. The bearing fixture (7) after discharging continues to rotate to the cleaning mechanism (6). The cleaning mechanism (6) cleans the bearing fixture (7) through the dry ice nozzle for printing of the next ceramic sheet. S6. The above steps are repeated.

8. The multilayer ceramic side electrode printing method of claim 1, wherein: In the step S2, the part of the silica gel printing head with a pattern size greater than the side size of the ceramic sheet is printed on the bearing fixture (7).

9. The multilayer ceramic side electrode printing method of claim 1, wherein: In the step S3, the heating mechanism (4) simultaneously performs heating and drying treatment on the ceramic sheet and the bearing fixture (7) matched with the ceramic sheet.

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