A tool suitable for marking multilayer ceramic capacitors and its use

Abstract

The present invention discloses a tooling and use suitable for marking a multilayer ceramic capacitor, including a bottom plate and a top plate connected to the bottom plate; a plurality of support strips are arranged in parallel at intervals on the bottom plate, a card slot connected to the support strips is arranged on the top plate, a plurality of positioning grooves matching the capacitor are arranged on the card slot, and the positioning grooves penetrate the top plate; the width of the support strips is not greater than the inner spacing of the electrodes at both ends of the capacitor or the lead-out ends, the height of the support strips is not less than the thickness of the electrodes at the capacitor ends or the height of the lead-out ends, and the thickness of the positioning grooves is equal to the thickness of the capacitor. The present invention uses screen printing to make a mark on the surface of a multilayer ceramic capacitor, which will not damage the surface of the ceramic body and the lead-out ends, and can make a colored mark; the use of tooling solves the problem of mass printing of products and improves production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of printing, and in particular to a tool suitable for marking a multilayer ceramic capacitor and its use. Background Art

[0002] Nowadays, some multilayer ceramic capacitors will have marks on the surface for traceability or identification functions, such as capacitance, withstand voltage, company logo, etc. Since laser marking has many advantages such as high marking accuracy, no need to contact the surface of the processed object, long-lasting marking, and high processing efficiency, the marking of multilayer ceramic capacitors is currently mostly achieved by laser marking, that is, using high-energy-density lasers to partially irradiate the surface of the ceramic body, causing the surface material to vaporize or undergo a chemical reaction that changes color, thereby ablating the required text or pattern.

[0003] However, although laser marking is a non-contact process that does not produce mechanical extrusion or mechanical stress, the ablation itself causes certain damage to the porcelain body and forms a heat-affected zone within a certain range, which has a potential impact on the long-term application reliability of the product. In addition, the color of laser marking is limited to only black and white, that is, black text on a white background or white text on a black background, and the expression form is relatively simple. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a tooling and use suitable for marking a multilayer ceramic capacitor.

[0005] The present invention discloses a tooling for marking a multilayer ceramic capacitor, comprising a bottom plate and a top plate connected to the bottom plate; the bottom plate is provided with a plurality of support strips spaced in parallel, the top plate is provided with a card slot connected to the support strips, the card slot is provided with a plurality of positioning grooves matched with the capacitor, and the positioning grooves penetrate the top plate;

[0006] Among them, the width of the support bar block is not greater than the inner side spacing of the electrodes at both ends of the capacitor or the lead-out ends, the height of the support bar block is not less than the thickness of the capacitor end electrodes or the height of the lead-out ends, and the thickness of the positioning groove is equal to the thickness of the capacitor.

[0007] Preferably, a plurality of lower holes are formed on the periphery of the bottom plate, and upper holes corresponding to the lower holes are formed on the top plate.

[0008] Preferably, the width of the support strip is not greater than the minimum value of the inner spacing between the electrodes at both ends of the capacitor and the lead-out terminals.

[0009] Preferably, the height of the support bar block is not less than the maximum value of the capacitor terminal electrode thickness and the lead-out terminal height.

[0010] Preferably, when the heights of the capacitor lead terminals are inconsistent, the maximum value is selected.

[0011] The present invention also discloses a marking application using the above-mentioned tooling, including:

[0012] Connect the top plate and the bottom plate together;

[0013] Place the capacitor in the positioning groove with the terminal electrodes parallel to the printing direction, and ensure that the top surface of the capacitor and the top surface of the top plate are on the same plane;

[0014] According to the preset logo color, prepare the corresponding printing ink;

[0015] Adding the prepared printing inks to the corresponding screen printing plates respectively;

[0016] Select the corresponding screen printing plate in a certain order, use a scraper to apply a certain pressure to print in a direction parallel to the terminal electrode, and after printing, take out the capacitor and place it in an oven for curing;

[0017] After curing is completed, the screen printing plate is replaced and the printing and curing steps are repeated until the capacitor obtains the corresponding mark.

[0018] Preferably, the ink is a thermosetting solder resist ink.

[0019] Preferably, the oven temperature is 150°C.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The invention uses screen printing to make marks on the surface of a multilayer ceramic capacitor, which will not damage the surface of the ceramic body and can make colored marks; and uses tooling processing to solve the problem of batch printing of products and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the bottom plate in the tooling suitable for the multi-layer ceramic capacitor mark of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the top plate in the tooling for multilayer ceramic capacitor marking of the present invention;

[0024] Figure 3 The present invention is a schematic cross-sectional view of a top plate in a tooling suitable for a multilayer ceramic capacitor mark. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0027] The invention provides a tool suitable for marking a multilayer ceramic capacitor and its application.

[0028] Reference Figure 1-3 The present invention provides a tooling suitable for marking a multilayer ceramic capacitor, comprising a bottom plate 1 and a top plate 2 connected to the bottom plate 1; a plurality of support strips 11 are arranged in parallel and at intervals on the bottom plate 1, a card slot 22 connected to the support strip 11 is arranged on the top plate 2, a plurality of positioning grooves 21 matched with the capacitor are arranged on the card slot 22, and the positioning grooves 21 penetrate the top plate 2.

[0029] The width of the support bar 11 is not greater than the inner spacing between the electrodes at both ends of the capacitor or the lead-out terminals, the height of the support bar 11 is not less than the thickness of the capacitor electrodes or the lead-out terminals, and the thickness of the positioning groove 21 is equal to the thickness of the capacitor.

[0030] Specifically, the top plate 2 is placed on the bottom plate 1, and the support bar 11 is located in the slot 22; the screws are passed through the upper sleeve hole 23 and the lower sleeve hole 12 in sequence to fix the top plate 2 and the bottom plate 1, and the work assembly is completed. The thickness of the positioning groove 21 is equal to the thickness of the capacitor to ensure that the plane of the capacitor and the plane of the top plate 2 are in the same plane during printing. The length and width of the positioning groove 21 are slightly larger than the length and width of the capacitor, that is, the positioning groove 21 and the capacitor are connected by a clearance fit to ensure that the normal placement and accurate positioning of the capacitor can be ensured. The width of the support bar 11 is not greater than the inner side spacing of the electrodes or lead-out terminals at both ends of the capacitor, and the height of the support bar 11 is not less than the thickness of the electrodes or the height of the lead-out terminals at the capacitor ends, ensuring that the electrodes or the lead-out terminals at both ends of the capacitor are located on both sides of the support bar 11, that is, the gap between the width of the support bar 11 and the positioning groove 21 is used to place the electrodes or the lead-out terminals at both ends of the capacitor, which limits the movement of the electrodes or the lead-out terminals at both ends of the capacitor, that is, the electrodes or the lead-out terminals at both ends of the capacitor are protected during printing.

[0031] Furthermore, the width of the support bar 11 is not greater than the minimum value of the inner side spacing between the electrodes at both ends of the capacitor and the lead-out terminal; the height of the support bar 11 is not less than the maximum value of the thickness of the capacitor end electrode and the height of the lead-out terminal; and when the heights of the capacitor lead-out terminals are inconsistent, the maximum value is selected.

[0032] In this embodiment, a plurality of lower holes 12 are formed on the periphery of the bottom plate 1 , and upper holes 23 corresponding to the lower holes 12 are formed on the top plate 2 .

[0033] The upper sleeve hole 23 is embedded, and the depth is determined to be no higher than the top surface of the top plate 2 after the screws are tightened.

[0034] In this embodiment, the bottom plate 1, the top plate 2 and the supporting strip block 11 can be made of materials such as metal, plastic, etc. that can be processed and have certain strength and rigidity.

[0035] In this embodiment, the number of the supporting strips 11 is 6, and the number of the positioning slots 21 is 6*10, that is, 60 capacitors can be printed at a time, so the positioning slots 21 can be set in different arrays according to actual needs.

[0036] The present invention also discloses a use of the above-mentioned tooling, including:

[0037] Connect the top plate 2 and the bottom plate 1;

[0038] Place the capacitor in the positioning groove 21 with the end electrodes parallel to the printing direction, and ensure that the top surface of the capacitor and the top surface of the top plate 2 are on the same plane;

[0039] According to the preset logo color, prepare the corresponding printing ink;

[0040] Add the prepared printing inks to the corresponding screen printing plates respectively;

[0041] Select the corresponding screen printing plate in a certain order, use the scraper to apply a certain pressure to print in the direction parallel to the terminal electrode, and after printing, take out the capacitor and place it in an oven for curing;

[0042] After curing, replace the screen printing plate and repeat the printing and curing steps until the capacitor obtains the corresponding mark.

[0043] In this embodiment, the ink is a thermosetting solder resist ink, and the mixing ratio and curing time of the thermosetting solder resist ink can be set according to the product instruction manual; the oven temperature is 150°C.

[0044] Example 1

[0045] Making green character marks on the surface of the capacitor: evenly mix the green thermosetting solder resist ink in the ratio of main agent: auxiliary agent = 100:10, and add it to the screen printing plate with the designed character pattern; put the capacitor into the printing tool positioning groove 21, so that the capacitor terminal electrode or lead-out terminal material is located on both sides of the support bar 11. When the capacitor contains lead-out terminal material, it needs to be placed downward in the card slot 22, and use a scraper to apply a certain pressure to print in the direction parallel to the terminal electrode to form the required text on the surface of the capacitor porcelain body. Take out the printed capacitor and place it in an oven at 150°C for curing for 45 minutes to obtain a capacitor with green character marks.

[0046] Example 2

[0047] A black background with white characters is made on the surface of the capacitor: white and black thermosetting solder resist inks are evenly mixed in proportion, and the mixed black ink is first added to the screen printing plate with the designed background color pattern; the capacitor is placed in the positioning groove 21 of the printing tool, so that the capacitor terminal electrodes or lead-out terminal materials are located on both sides of the support bar 11. When the capacitor contains lead-out terminal materials, it needs to be placed downward in the card slot 22, and a certain pressure is applied using a scraper to print in a direction parallel to the terminal electrode to form the required black background on the surface of the capacitor porcelain body, and the printed capacitor is taken out and placed in an oven at 150°C for curing for 20 minutes, and then placed in the positioning groove 21 of the printing tool, and white ink is added to the screen printing plate with the designed character pattern for printing, and the printed capacitor is taken out and placed in an oven at 150°C for curing for 45 minutes to obtain a capacitor with a black background with white characters.

[0048] Example 3

[0049] Make a colored mark on the surface of the capacitor: mix red and yellow thermosetting solder resist inks evenly in proportion, first add the prepared red ink to the screen printing plate designed with graphic 1; put the capacitor into the positioning groove 21 of the printing tooling, so that the capacitor terminal electrodes or lead-out terminal materials are located on both sides of the support bar 11. When the capacitor contains lead-out terminal materials, it needs to be placed downward in the card slot 22, and use a scraper to apply a certain pressure to print in a direction parallel to the terminal electrode to form the required red pattern on the surface of the capacitor porcelain body, take out the printed capacitor and place it in an oven at 150°C for curing for 20 minutes, then take it out and place it in the positioning groove 21 of the printing tooling, add yellow ink to the screen printing plate designed with graphic 2 for printing, take out the printed capacitor and place it in an oven at 150°C for curing for 45 minutes to obtain a capacitor with red and yellow marks.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tool suitable for marking multilayer ceramic capacitors, characterized in that: It comprises a bottom plate and a top plate connected with the bottom plate; the bottom plate is provided with a plurality of support strips spaced in parallel, the top plate is provided with a card slot connected with the support strips, the card slot is provided with a plurality of positioning grooves matched with the capacitor, and the positioning grooves penetrate the top plate; Among them, the width of the support bar block is not greater than the minimum value of the inner side spacing between the electrodes at both ends of the capacitor and the lead-out end, the height of the support bar block is not less than the maximum value of the thickness of the capacitor end electrode and the height of the lead-out end, and the thickness of the positioning groove is equal to the thickness of the capacitor.

2. The tooling for multilayer ceramic capacitor marking as claimed in claim 1, characterized in that: A plurality of lower holes are formed on the periphery of the bottom plate, and upper holes corresponding to the lower holes are formed on the top plate.

3. A use of a tool as claimed in any one of claims 1 to 2, characterized in that: include: Connect the top plate and the bottom plate together; Place the capacitor in the positioning groove with the terminal electrodes parallel to the printing direction, and ensure that the top surface of the capacitor and the top surface of the top plate are on the same plane; According to the preset logo color, prepare the corresponding printing ink; Adding the prepared printing inks to the corresponding screen printing plates respectively; Select the corresponding screen printing plate in a certain order, use a scraper to apply a certain pressure to print in a direction parallel to the terminal electrode, and after printing, take out the capacitor and place it in an oven for curing; After curing is completed, the screen printing plate is replaced and the printing and curing steps are repeated until the capacitor obtains the corresponding mark.

4. The use of the tooling as claimed in claim 3, characterized in that: The ink is a thermosetting solder resist ink.

5. The use of the tooling as claimed in claim 4, characterized in that: The oven temperature is 150°C.

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