Resistance ceramic tensile test device

Abstract

The utility model discloses a resistance ceramic tensile testing device, and belongs to the technical field of ceramic resistors. The resistor ceramic comprises a resistor ceramic substrate, an upper pressing cap and a lower pressing cap; the device further comprises a mold, a test assembly and a translation assembly, the mold comprises a lower mold and an upper mold which are oppositely arranged, the lower mold is provided with a plurality of first hole bodies used for inserting lower pressing caps, and the upper mold is provided with a second hole body used for inserting upper pressing caps; the first hole body and the second hole body can magnetically attract a pressing cap with a nickel-plated layer; the testing assembly comprises an elastic force measuring unit and a lifting unit, the upper die is connected with the lifting unit through the elastic force measuring unit, and the elastic force measuring unit can relatively extend and measure real-time drawing force; the lifting unit can change the elastic deformation quantity of the elastic force measuring unit. The translation assembly is connected with the lower die and can adjust the lower die to move in the horizontal plane. According to the utility model, the tensile test can be carried out aiming at the size and tensile coefficient of the resistance ceramic.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic resistors, in particular to a resistance ceramic tensile testing device. Background Art

[0002] Resistor ceramics are the core material of ceramic resistors, determining their electrical and physical properties. Resistor ceramics generally consist of a central ceramic base and two resistor caps at each end. The base is typically made of a high-resistivity oxide ceramic material, such as zinc oxide, magnesium oxide, aluminum oxide, or other composite oxides. The resistor caps primarily provide electrical connections and mechanical fixation at both ends of the resistor, ensuring reliable connection to the circuit while protecting the resistor's internal structure.

[0003] Resistor ceramics typically undergo various performance tests before shipment. A key test involves tensile testing of the ceramic substrate and the pressure cap, which determines the tightness of the connection between the ceramic substrate and the pressure cap. However, due to the small size of ceramic resistors, clamping is difficult, and their tensile stress is low, making appropriate testing equipment unavailable. Utility Model Content

[0004] In view of this, it is necessary to provide a resistance ceramic tensile testing device to solve the problem that existing equipment cannot effectively perform tensile testing on resistance ceramics.

[0005] The utility model provides a resistance ceramic tensile testing device, comprising a resistance ceramic for testing, wherein the resistance ceramic comprises a resistance ceramic substrate, an upper pressure cap and a lower pressure cap; and is characterized in that it further comprises:

[0006] The mold includes a lower mold and an upper mold arranged relatively to each other, the lower mold is provided with a plurality of first holes for inserting the lower pressure cap, and the upper mold is provided with a second hole for inserting the upper pressure cap; the first hole and the second hole are both capable of magnetically attracting the pressure cap with a nickel layer;

[0007] The test assembly includes an elastic force measuring unit and a lifting unit. The upper mold is connected to the lifting unit through the elastic force measuring unit. The elastic force measuring unit can be relatively stretched and measure the real-time tensile force; the lifting unit can change the elastic deformation of the elastic force measuring unit to adjust the tensile force of the pressure cap relative to the resistor ceramic substrate.

[0008] The translation assembly is connected to the lower mold, and the translation assembly can adjust the lower mold to move in a horizontal plane to drive the first hole bodies to cooperate with the second hole bodies one by one.

[0009] Furthermore, the second hole body is provided with an electromagnetic plate for magnetic connection with the pressure cap, and the electromagnetic plate is arranged on the sealing end of the second hole body and fixedly connected to the upper mold; the structure of the first hole body is consistent with the structure of the second hole body.

[0010] Furthermore, an electromagnetic plate is provided in the first hole body, and the electromagnetic plate abuts against the sealing ends of multiple first hole bodies, and the electromagnetic plate can be magnetically connected to the pressure cap; an electromagnetic sheet for magnetically connecting to the pressure cap is provided in the second hole body, and the electromagnetic sheet is arranged on the sealing end of the second hole body and fixedly connected to the upper mold.

[0011] Furthermore, an electromagnetic sleeve is provided in the second hole body, and the electromagnetic sleeve is embedded in the second hole body. The electromagnetic sleeve can be sleeved on the pressure cap and magnetically connected to the pressure cap; the structure of the first hole body is consistent with the structure of the second hole body.

[0012] Furthermore, the elastic force measuring unit is an electronic spring dynamometer.

[0013] Furthermore, the translation assembly includes a cross slide and a drive motor, and the two drive motors are respectively connected to the cross slide to drive the slide of the cross slide to move horizontally or vertically in the horizontal plane, and the lower mold is connected to the slide of the cross slide.

[0014] Furthermore, a plurality of the first holes are equidistantly arranged on the lower mold, and the distance between two adjacent first holes is equal.

[0015] Furthermore, the lifting unit includes a vertically arranged support frame and a lifting plate, the lifting plate is slidably engaged with the support frame, the lifting plate can move vertically along the support frame, and the lifting plate is connected to the upper mold through the elastic force measuring unit.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The utility model provides a resistance ceramic tensile testing device, which is provided with a mold, wherein the mold includes a lower mold and an upper mold arranged relatively to each other, the lower mold being provided with a plurality of first holes for inserting lower pressure caps, and the upper mold being provided with a second hole for inserting upper pressure caps; the first holes and the second holes are both capable of magnetically attracting pressure caps having a nickel layer, thereby clamping and fixing the resistance ceramic. Compared with traditional mechanical clamps, there is no need to miniaturize the mechanical clamps to adapt to the volume of the resistance ceramics, which can avoid direct extrusion by traditional mechanical clamps, improve the stability of the clamping process, and reduce the risk of sample damage.

[0018] (2) The utility model is a resistance ceramic tensile test device, which is provided with a test assembly, which includes an elastic force measuring unit and a lifting unit. The upper mold is connected to the lifting unit through the elastic force measuring unit. The elastic force measuring unit can be relatively stretched and measure the real-time tensile force. The lifting unit can move relatively to change the elastic deformation of the elastic force measuring unit, so that the pressure cap is subjected to the tensile force from the elastic force measuring unit, and the tensile force of the pressure cap relative to the resistance ceramic substrate can be accurately adjusted. Within a certain elastic limit, there is a linear relationship between the elastic deformation of the elastic force measuring unit and the tensile force, which makes the measurement more accurate. At the same time, compared with the existing tensile test equipment, it can obtain smaller pressure and pressure changes under the premise of large feed amount or deformation amount, and adapt to the size and tensile coefficient of the resistance ceramic. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the coordination structure of the translation component and the test component in the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the upper die and lower die in the utility model. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the structure of the upper die and lower die in the utility model. Figure 2 ;

[0024] Figure 5 This is a schematic diagram of the structure of the upper die and lower die in the utility model. Figure 3 ;

[0025] Figure 6 This is a schematic diagram of the connection structure between the translation assembly and the lower mold in the utility model;

[0026] Figure 7 It is a schematic diagram of the connection structure between the test component and the upper mold in the utility model.

[0027] In the figure, 100, mold; 110, lower mold; 111, first hole body; 112, electromagnetic plate; 120, upper mold; 121, second hole body; 122, electromagnetic sheet; 123, electromagnetic sleeve;

[0028] 200, test assembly; 210, elastic force measuring unit; 220, lifting unit; 221, support frame; 222, lifting plate;

[0029] 300, translation assembly; 310, cross slide; 320, drive motor. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0031] A resistor ceramic tensile test device in this embodiment relates to the technical field of ceramic resistors. By artificially nickel-plating the surface of a pressure cap to make the pressure cap ferromagnetic, the pressure cap is clamped and fixed by a magnet to perform a tensile test on the ceramic resistor.

[0032] See also Figures 1 to 7 In this embodiment, a resistor ceramic tensile testing device includes a resistor ceramic for testing. The resistor ceramic includes a resistor ceramic base, an upper pressure cap, and a lower pressure cap. The upper and lower pressure caps are press-fitted onto the ends of the resistor ceramic base. The tightness of the connection between the pressure caps and the resistor ceramic base can be tested using tensile strength.

[0033] This embodiment of a resistive ceramic tensile testing device also includes a mold 100, a testing assembly 200, and a translation assembly 300. The mold 100 can clamp the resistive ceramic magnetically, and the testing assembly 200 can measure the tensile force between the pressure cap and the resistive ceramic substrate to evaluate the tensile strength. The translation assembly 300 can move the mold 100 to allow different resistive ceramics to be tested separately.

[0034] The mold 100 comprises a lower mold 110 and an upper mold 120 positioned opposite each other. The lower mold 110 is provided with multiple first holes 111 for inserting lower pressure caps, while the upper mold 120 is provided with a second hole 121 for inserting upper pressure caps. Both the first holes 111 and the second holes 121 magnetically attract the nickel-plated pressure caps, thereby clamping and securing the resistor ceramic. Compared to traditional mechanical clamps, this eliminates the need for miniaturization to accommodate the size of the resistor ceramic, avoids direct compression, improves the stability of the clamping process, and reduces the risk of sample damage.

[0035] The test assembly 200 includes an elastic force measuring unit 210 and a lifting unit 220. The upper mold 120 is connected to the lifting unit 220 via the elastic force measuring unit 210. The elastic force measuring unit 210 can stretch relatively and measure the real-time tensile force. The lifting unit 220 can move relatively, changing the elastic deformation of the elastic force measuring unit 210, so that the pressure cap is subjected to the tension from the elastic force measuring unit 210, and the tensile force of the pressure cap relative to the resistor ceramic substrate can be precisely adjusted. Within a certain elastic limit, there is a linear relationship between the elastic deformation of the elastic force measuring unit 210 and the tension, making the measurement more accurate. At the same time, compared to existing tensile testing equipment, it can obtain smaller pressure and pressure changes under the premise of large feed rate or deformation, adapting to the size and tensile coefficient of the resistor ceramic.

[0036] The translation assembly 300 is connected to the lower mold 110. The translation assembly 300 can adjust the lower mold 110 to move in the horizontal plane, drive the first hole body 111 to cooperate with the second hole body 121 one by one, and perform tensile strength tests on multiple resistor ceramics in turn to achieve batch testing of resistor ceramics.

[0037] In some embodiments, see Figure 3 The second hole 121 is provided with an electromagnetic sheet 122 for magnetically connecting to the pressure cap. The electromagnetic sheet 122 is located on the sealed end of the second hole 121 and is fixedly connected to the upper mold 120. When energized, the electromagnetic sheet 122 generates a magnetic field, attracting and clamping the nickel-plated pressure cap. The structure of the first hole 111 is consistent with that of the second hole 121. The first and second holes 111 and 121 can use the electromagnetic sheet 122 to attract the pressure caps at both ends of the ceramic resistor, exerting different effects on the pressure caps and the ceramic resistor, stretching the pressure cap relative to the ceramic resistor.

[0038] As another implementation, see Figure 4 An electromagnetic plate 112 is installed in each first hole 111 and embedded in the lower mold 110. Electromagnetic plate 112 abuts the sealed ends of the first holes 111 and is magnetically connected to the pressure cap. Rather than installing a separate electromagnetic plate 122 for each hole, the electromagnetic plates 122 can be integrated into a single electromagnetic plate 112 and installed in the lower mold 110, resulting in lower costs and greater system stability.

[0039] As another implementation, see Figure 5The second hole 121 is provided with an electromagnetic sleeve 123, which is embedded in the second hole 121 and can be mounted on the pressure cap and magnetically connected to the pressure cap. The structure of the first hole 111 is consistent with that of the second hole 121, and the hole structures of the upper and lower molds 110 are consistent, ensuring that the sample is symmetrically stressed in the vertical direction during testing, avoiding errors introduced by uneven clamping, and improving the reliability and repeatability of the test results.

[0040] Compared to traditional planar magnetic attraction methods (such as the electromagnetic sheet 122), which only act on a local area and may cause slight deviation or rotation of the sample during clamping, the electromagnetic sleeve 123 surrounds the pressure cap, providing 360-degree magnetic attraction to achieve full fixation of the pressure cap, prevent lateral sliding and rotation, and improve the stability of the test process.

[0041] It should be noted that elastic force measuring unit 210 is an electronic spring dynamometer, which converts spring deformation into an electrical signal, achieving high-resolution, precise measurement, meeting the testing requirements of low-stress structures such as resistive ceramics. This electronic spring dynamometer digitizes tension changes in real time and, in conjunction with a monitoring system, provides dynamic monitoring, improving test timeliness and data accuracy.

[0042] In some embodiments, see Figure 6 The translation assembly 300 includes a cross slide 310 and a drive motor 320. The lower mold 110 is connected to the slide of the cross slide 310. The two drive motors 320 are respectively connected to the horizontal and vertical drive mechanisms of the cross slide 310. The cross slide 310 supports precise horizontal and vertical (XY directions) movement, can automatically align multiple samples, avoid manual operation errors, and improve test flexibility.

[0043] In some embodiments, see Figure 7 The lifting unit 220 includes a vertically arranged support frame 221 and a lifting plate 222. The support frame 221 is provided with a screw nut driving device in the vertical direction. The lifting plate 222 is connected to the nut of the screw nut driving device. The screw nut driving device can drive the lifting plate 222 to move vertically along the support frame 221. The lifting plate 222 is connected to the upper mold 120 through the elastic force measuring unit 210. The lifting plate 222 can adjust the deformation degree of the elastic force measuring unit 210 and change the tensile force exerted on the pressure cap. By adjusting the deformation degree of the elastic force measuring unit 210, the tensile force exerted on the pressure cap can be precisely controlled to meet the testing requirements of different samples. The screw nut driving system ensures that the lifting plate 222 moves smoothly and evenly, reduces unnecessary vibration and impact, and maintains a consistent force direction, thereby improving the reliability of the test data.

[0044] Workflow: First, insert the lower pressure caps of multiple resistor ceramics to be tested into the first holes 111 of the lower mold 110. Next, activate the electromagnet in the lower mold 110 to secure the resistor ceramics. Then, activate the lifting unit 220, driving the second hole 121 of the upper mold 120 to mate with the upper pressure caps of the resistor ceramics. The electromagnet in the upper mold 120 is also activated to secure the resistor ceramics. Finally, the lifting unit 220 is manipulated to move upward, and the elastic force measuring unit 210 is stretched relative to each other to perform a tensile test on the pressure caps.

[0045] The above description is only a preferred specific implementation of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the present invention.

Claims

1. A resistance ceramic tensile testing device, comprising a resistance ceramic for testing, wherein the resistance ceramic comprises a resistance ceramic substrate, an upper pressure cap, and a lower pressure cap; characterized in that: Also includes: The mold includes a lower mold and an upper mold arranged relatively to each other, the lower mold is provided with a plurality of first holes for inserting the lower pressure cap, and the upper mold is provided with a second hole for inserting the upper pressure cap; the first hole and the second hole are both capable of magnetically attracting the pressure cap with a nickel layer; A test assembly, comprising an elastic force measuring unit and a lifting unit, wherein the upper mold is connected to the lifting unit via the elastic force measuring unit, and the elastic force measuring unit is capable of relative extension and measuring real-time tensile force; The lifting unit can change the elastic deformation of the elastic force measuring unit to adjust the tensile force of the pressure cap relative to the resistor ceramic substrate; A translation assembly is connected to the lower mold, and the translation assembly can adjust the lower mold to move in a horizontal plane to drive the first hole bodies to cooperate with the second hole bodies one by one.

2. A resistance ceramic tensile testing device according to claim 1, characterized in that: An electromagnetic sheet for magnetically connecting to the pressure cap is provided in the second hole body. The electromagnetic sheet is arranged on the sealing end of the second hole body and fixedly connected to the upper mold. The structure of the first hole body is consistent with that of the second hole body.

3. A resistance ceramic tensile testing device according to claim 1, characterized in that: An electromagnetic plate is provided in the first hole body, and the electromagnetic plate abuts against the sealing ends of multiple first hole bodies. The electromagnetic plate can be magnetically connected to the pressure cap; an electromagnetic sheet for magnetically connecting to the pressure cap is provided in the second hole body, and the electromagnetic sheet is arranged on the sealing end of the second hole body and fixedly connected to the upper mold.

4. A resistance ceramic tensile testing device according to claim 1, characterized in that: An electromagnetic sleeve is provided in the second hole body, and the electromagnetic sleeve is embedded in the second hole body. The electromagnetic sleeve can be sleeved on the pressure cap and magnetically connected to the pressure cap; the structure of the first hole body is consistent with that of the second hole body.

5. A resistance ceramic tensile testing device according to any one of claims 1 to 4, characterized in that: The elastic force measuring unit is an electronic spring dynamometer.

6. A resistance ceramic tensile testing device according to claim 1, characterized in that: The translation assembly includes a cross slide and a drive motor. The two drive motors are respectively connected to the cross slide to drive the slide of the cross slide to move horizontally or vertically in a horizontal plane. The lower mold is connected to the slide of the cross slide.

7. A resistance ceramic tensile testing device according to claim 1, characterized in that: A plurality of the first holes are equidistantly arranged on the lower die, and a distance between two adjacent first holes is equal.

8. The resistance ceramic tensile testing device according to claim 1, characterized in that: The lifting unit includes a vertically arranged support frame and a lifting plate. The lifting plate is slidably engaged with the support frame and can move vertically along the support frame. The lifting plate is connected to the upper mold through the elastic force measuring unit.

Images