A ceramic capacitor and an automatic detection device convenient for automatic detection

Abstract

The utility model discloses a ceramic capacitor and an automated detection device that are convenient for automated detection, wherein the ceramic capacitor includes a tubular ceramic insulating medium, a first truncated cone-shaped groove for matching the shape of a detection needle tip is provided at one end of the tubular ceramic insulating medium, the first truncated cone-shaped groove is communicated with the inner hole of the tubular ceramic insulating medium, and the inner wall of the first truncated cone-shaped groove is still entirely provided with an inner electrode; and / or a second truncated cone-shaped groove for matching the shape of a detection needle tip is provided at the other end of the tubular ceramic insulating medium, the second truncated cone-shaped groove is communicated with the inner hole of the tubular ceramic insulating medium, and the inner wall of the second truncated cone-shaped groove is still entirely provided with an inner electrode. The ceramic capacitor of the utility model can be accurately, stably and quickly positioned to the inner electrode for detection by the detection needle, thereby quickly detecting the quality of the produced tubular ceramic capacitors to meet production requirements and market demands.

Description

Technical Field

[0001] The utility model relates to the field of capacitors, and in particular to a ceramic capacitor which is convenient for automatic detection and an automatic detection device. Background Art

[0002] Existing tubular capacitors, see Figure 1 As shown, it is composed of an outer electrode 101, an inner electrode 102 and a ceramic insulating medium 103. The ceramic insulating medium is a tubular structure. The inner electrode 102 is arranged on the central hole wall of the tubular ceramic insulating medium, and the outer electrode 101 is arranged on the outer circular wall of the tubular ceramic insulating medium. Since the tubular ceramic insulating medium is in the shape of a single cylindrical structure, see Figure 2 As shown, when passing through the mounting hole of the shielding shell, the installation height cannot be accurately positioned by itself, and one or two sets of tooling are generally required for positioning during installation, making the installation and positioning of the tubular capacitor more complicated and the positioning effect unsatisfactory.

[0003] To this end, the inventor disclosed a new type of stepped tubular ceramic capacitor in the patent with authorization announcement number CN203103127U, including an outer electrode, an inner electrode and a tubular ceramic insulating medium, wherein the tubular ceramic insulating medium adopts a stepped tubular ceramic insulating medium, which is integrally die-casted by a small circular tube part and a large circular tube part, and a step is formed at the junction of the small circular tube part and the large circular tube part, and an inner electrode is provided on the central hole wall of the stepped tubular ceramic insulating medium, and an outer electrode is provided on the outer circular wall of the stepped tubular ceramic insulating medium. The stepped tubular ceramic capacitor can accurately position the shielding shell, is simple to install and has an ideal installation effect.

[0004] Later, in order to make the stepped tubular ceramic capacitor be applied in a wider range, the inventor disclosed a ceramic capacitor in the patent with the authorization announcement number CN105551798B, including a stepped tubular ceramic insulating medium, the stepped tubular ceramic insulating medium is formed by integral die-casting of a small round tube and a large round tube, an inner electrode is provided on the inner hole wall of the stepped tubular ceramic insulating medium, and an outer electrode is provided on the outer circular wall of the stepped tubular ceramic insulating medium; a first annular groove is provided at the end of the small round tube, and the first annular groove is communicated with the cavity of the small round tube; and / or a second annular groove is provided at the end of the large round tube, and the second annular groove is communicated with the cavity of the large round tube. The present invention is more convenient to install and has a more ideal installation effect, and can be more widely used.

[0005] The above-mentioned CN203103127U and CN105551798B are both stepped tubular ceramic capacitors. Figure 1The tubular ceramic capacitor shown in the figure has many other uses besides being used for the installation of shielding shells. Ceramic capacitors can complete multiple functions in electronic circuits, such as coupling, DC isolation, bypass, filtering, energy storage, etc. They can also be combined with other electronic components to form oscillation circuits to perform tasks such as signal transmission, reception, and processing. With the rapid expansion of the application field of electronic equipment, tubular ceramic capacitors still have many uses. Therefore, there is still a demand for mass production of tubular ceramic capacitors in the market.

[0006] But the Figure 1 The tubular ceramic capacitors shown in the figure need to be tested for various electrical performance parameters such as capacitance, loss angle, insulation resistance, etc. during mass production. However, when using a test needle for testing, it is impossible to accurately, stably and quickly locate the inner electrode for testing. As a result, it is often difficult to test during mass production, and it is difficult to quickly test the quality of the produced tubular ceramic capacitors, making it difficult to meet production requirements and market demands. Utility Model Content

[0007] In view of this, in order to solve the above-mentioned technical problems, the purpose of the utility model is to propose a ceramic capacitor and an automated detection device that are easy to detect automatically. The ceramic capacitor can be accurately, stably and quickly positioned to the inner electrode by the detection needle for detection, so as to quickly detect the quality of the produced tubular ceramic capacitors and meet production requirements and market demands.

[0008] The technical solutions adopted are:

[0009] The utility model discloses a ceramic capacitor which is convenient for automatic detection, comprising a tubular ceramic insulating medium, wherein an inner electrode is arranged on the inner hole wall of the tubular ceramic insulating medium, and an outer electrode is arranged on the outer circular wall of the tubular ceramic insulating medium; a first truncated cone-shaped groove for matching the shape of a detection needle tip is opened at one end of the tubular ceramic insulating medium, the first truncated cone-shaped groove is communicated with the inner hole of the tubular ceramic insulating medium, and the inner wall of the first truncated cone-shaped groove is still entirely provided with the inner electrode; and / or a second truncated cone-shaped groove for matching the shape of a detection needle tip is opened at the other end of the tubular ceramic insulating medium, the second truncated cone-shaped groove is communicated with the inner hole of the tubular ceramic insulating medium, and the inner wall of the second truncated cone-shaped groove is still entirely provided with the inner electrode.

[0010] Furthermore, a tin layer is plated on the outer circumferential wall surface of the tubular ceramic insulating medium to form an external electrode.

[0011] Furthermore, when the first truncated cone-shaped groove and the second truncated cone-shaped groove are provided, the first truncated cone-shaped groove and the second truncated cone-shaped groove are of the same size and symmetrical up and down.

[0012] The utility model provides an automatic detection device for ceramic capacitors, which comprises:

[0013] A rotating disk, with a plurality of slots provided in the circumferential direction thereof, each slot correspondingly inserting the ceramic capacitor;

[0014] A detection needle is arranged above the rotating disk, and the needle head of the detection needle can be matched and inserted into the first truncated cone groove or the second truncated cone groove of the ceramic capacitor;

[0015] A display device, which is electrically connected to the detection needle and is used to display the electrical performance parameters detected by the detection needle;

[0016] A first power device, which is used to provide power for the rotating disk to rotate;

[0017] The second power device is used to provide power for the detection needle to move up and down.

[0018] Furthermore, the first power device is a servo motor.

[0019] Furthermore, the second power device is a servo electric cylinder.

[0020] The beneficial effects of the utility model are:

[0021] On the one hand, the utility model provides a first truncated cone-shaped groove for matching the shape of the detection needle tip at one end of the tubular ceramic insulating medium, the first truncated cone-shaped groove is communicated with the inner hole of the tubular ceramic insulating medium, and the inner wall of the first truncated cone-shaped groove is still entirely provided with an inner electrode; and / or provides a second truncated cone-shaped groove for matching the shape of the detection needle tip at the other end of the tubular ceramic insulating medium, the second truncated cone-shaped groove is communicated with the inner hole of the tubular ceramic insulating medium, and the inner wall of the second truncated cone-shaped groove is still entirely provided with an inner electrode; thereby, the ceramic capacitor can be accurately, stably and quickly positioned to the inner electrode by the detection needle for detection, thereby quickly detecting the quality of the produced tubular ceramic capacitors to meet production requirements and market demands.

[0022] On the other hand, the first truncated cone-shaped groove and / or the second truncated cone-shaped groove reduces the thickness of the tubular ceramic insulating medium, thereby also increasing the capacitance of the ceramic capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0024] Figure 1 It is a structural schematic diagram of a tubular capacitor in the background technology.

[0025] Figure 2 It is a schematic diagram of the installation structure of a tubular capacitor in the background technology.

[0026] Figure 3 This is a schematic diagram of the structure of a ceramic capacitor that is easy to automatically detect according to Example 1.

[0027] Figure 4 This is a schematic diagram of the structure of a ceramic capacitor that is easy to automatically detect according to Example 2.

[0028] Figure 5 This is a schematic diagram of the structure of a ceramic capacitor that is easy to automatically detect according to Example 3.

[0029] Figure 6 This is a schematic diagram of the structure of a detection needle in Example 4.

[0030] Figure 7 This is a schematic diagram of the structure of the detection needle in Example 4 inserted into the ceramic capacitor.

[0031] Figure 8 This is a schematic structural diagram of an automated detection device for ceramic capacitors in Example 4. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only partial embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] See also Figure 3 As shown, a ceramic capacitor that is easy to detect automatically in this embodiment includes a tubular ceramic insulating medium 203 , an inner electrode 202 is provided on the inner hole wall of the tubular ceramic insulating medium 203 , and an outer electrode 201 is provided on the outer circular wall of the tubular ceramic insulating medium 203 .

[0035] A first truncated cone-shaped groove 204 for matching the shape of the detection needle tip is provided at one end of the tubular ceramic insulating medium 203 . The first truncated cone-shaped groove 204 communicates with the inner hole of the tubular ceramic insulating medium 203 . The inner wall of the first truncated cone-shaped groove 204 still has the inner electrode 202 .

[0036] On the one hand, since the first truncated cone shaped groove matches the shape of the detection needle tip, it is convenient to insert the detection needle tip into the first truncated cone shaped groove, accurately, stably and quickly locate the inner electrode for detection, thereby quickly detecting the quality of the produced tubular ceramic capacitors to meet production requirements and market demands.

[0037] On the other hand, the first truncated cone-shaped groove reduces the thickness of the tubular ceramic insulating medium, thereby increasing the capacitance of the ceramic capacitor. Since the capacitance determining formula is: C = εS / 4πkd. Among them, C is the capacitance, ε is a constant, S is the area of ​​the capacitor plates, d is the distance between the capacitor plates, and k is the electrostatic force constant. Reducing the thickness of the tubular ceramic insulating medium is equivalent to reducing the distance d.

[0038] Example 2

[0039] Based on Example 1, see Figure 4 As shown, a ceramic capacitor that is easy to detect automatically in this embodiment also includes: a second truncated cone shaped groove 205 for matching the shape of the detection needle tip is opened at the other end of the tubular ceramic insulating medium 203, the second truncated cone shaped groove 205 is connected to the inner hole of the tubular ceramic insulating medium 203, and the inner wall of the second truncated cone shaped groove 205 still has the inner electrode 202.

[0040] The second truncated cone-shaped groove further reduces the thickness of the large round tube and further increases the capacitance of the ceramic capacitor.

[0041] As a preferred specific implementation, the first truncated cone groove 204 and the second truncated cone groove 205 are the same size and symmetrical from top to bottom. In this way, the entire ceramic capacitor can be symmetrical from top to bottom, which is not only beautiful, but also has no directionality from top to bottom, which is convenient for the vibration disk to work during batch testing. That is, the vibration disk can make multiple ceramic capacitors automatically enter the assembly or processing position in a unified state according to the requirements of assembly or processing. The working purpose of the vibration disk is to automatically and orderly arrange multiple disordered ceramic capacitors in a directional and accurate manner through vibration and transport them to the next process. Symmetry from top to bottom can reduce the design of the screening structure of the vibration disk.

[0042] Moreover, no matter whether it is the first truncated cone-shaped groove or the second truncated cone-shaped groove, the detection needle can be inserted into any one of them for detection.

[0043] As a specific implementation, a tin layer is plated on the outer circumferential wall surface of the tubular ceramic insulating medium to form an external electrode.

[0044] Example 3

[0045] It should be noted that the serial numbers first and second in this specification are for distinguishing components or parts with the same function or structure, and do not imply a sequence. The corresponding components or parts are relatively independent, such as the first truncated cone groove and the second truncated cone groove.

[0046] That is, the improvement of this embodiment may not be based on the embodiment 1, but may be independently based on the existing Figure 1 Improvements to the tubular ceramic capacitors shown:

[0047] See also Figure 5 As shown, only the other end of the tubular ceramic insulating medium is provided with a second truncated cone-shaped groove 205 for matching the shape of the detection needle tip. The second truncated cone-shaped groove 2005 is connected to the inner hole of the tubular ceramic insulating medium 203, and the inner wall of the second truncated cone-shaped groove 205 is still completely provided with the inner electrode 202.

[0048] The technical effect is the same as that of Example 1.

[0049] Example 4

[0050] Based on Example 2, see Figure 6-Figure 8 As shown, an automatic detection device for ceramic capacitors of this embodiment includes:

[0051] A rotating disk 400 is provided with a plurality of slots 401 in the circumferential direction, each slot correspondingly inserting a ceramic capacitor 200 of Embodiment 2; this can be achieved manually or by vibrating the disk;

[0052] A detection needle 300 is disposed above the rotating disk, and a needle head 301 of the detection needle 300 can be matched and inserted into the first truncated cone-shaped groove 204 or the second truncated cone-shaped groove 205 of the ceramic capacitor 200 of Example 2;

[0053] The display device is electrically connected to the detection needle and is used to display the electrical performance parameters detected by the detection needle. The display device includes a display screen.

[0054] A first power device, which is used to provide power for the rotating disk to rotate;

[0055] The second power device is used to provide power for the detection needle to move up and down.

[0056] The first power device includes but is not limited to, for example, a servo motor. The second power device includes but is not limited to, for example, a servo electric cylinder.

[0057] During operation, under the action of the second power device, the needle head of the detection needle moves downward and is inserted into the first truncated cone groove or the second truncated cone groove of the ceramic capacitor. Then the electrical performance parameters detected by the detection needle are displayed on the display screen, so as to judge whether the electrical performance parameters are qualified. Then, under the action of the second power device, the needle head of the detection needle is taken out of the first truncated cone groove or the second truncated cone groove and moves upward. Under the action of the first power device, the rotating disk rotates the next ceramic capacitor to the bottom of the detection needle, and the detection needle repeats the above-mentioned up and down movement steps for detection, so that multiple ceramic capacitors can be batch-tested quickly in sequence.

[0058] The display device, the first power device and the second power device can all be implemented using existing components, so their internal structures are not described in detail.

[0059] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the protection scope of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A ceramic capacitor that is easy to detect automatically, characterized in that: It comprises a tubular ceramic insulating medium, an inner electrode is arranged on the inner hole wall of the tubular ceramic insulating medium, and an outer electrode is arranged on the outer circular wall of the tubular ceramic insulating medium; a first truncated cone-shaped groove for matching the shape of a detection needle tip is opened at one end of the tubular ceramic insulating medium, the first truncated cone-shaped groove is communicated with the inner hole of the tubular ceramic insulating medium, and the inner wall of the first truncated cone-shaped groove is provided with an inner electrode; and / or a second truncated cone-shaped groove for matching the shape of a detection needle tip is opened at the other end of the tubular ceramic insulating medium, the second truncated cone-shaped groove is communicated with the inner hole of the tubular ceramic insulating medium, and the inner wall of the second truncated cone-shaped groove is provided with an inner electrode.

2. The ceramic capacitor that is easy to detect automatically according to claim 1, characterized in that: A tin layer is plated on the outer circumferential wall surface of the tubular ceramic insulating medium to form an external electrode.

3. The ceramic capacitor that is easy to detect automatically according to claim 1, characterized in that: When the first truncated cone-shaped groove and the second truncated cone-shaped groove are provided, the first truncated cone-shaped groove and the second truncated cone-shaped groove are of the same size and symmetrical up and down.

4. An automatic detection device for ceramic capacitors, characterized in that: include: A rotating disk, wherein a plurality of slots are provided in the circumferential direction thereof, and each slot corresponds to a ceramic capacitor according to any one of claims 1 to 3; A detection needle is arranged above the rotating disk, and the needle head of the detection needle can be matched and inserted into the first truncated cone groove or the second truncated cone groove of the ceramic capacitor; A display device, which is electrically connected to the detection needle and is used to display the electrical performance parameters detected by the detection needle; A first power device, which is used to provide power for the rotating disk to rotate; The second power device is used to provide power for the detection needle to move up and down.

5. The automated detection device according to claim 4, characterized in that: The first power device is a servo motor.

6. The automated detection device according to claim 4, characterized in that: The second power device is a servo electric cylinder.

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