Matching device for testing residual magnetic quantity of HTCC ceramic shell

Abstract

The utility model discloses a matching device for testing the residual magnetic quantity of an HTCC ceramic shell, which comprises a magnetic field shielding box, the left side and the right side in the magnetic field shielding box are respectively provided with a sample conveying frame, the area between the sample conveying frames is divided into an upper part and a lower part, the upper layer is provided with residual magnetic quantity testing equipment, and the lower layer is a working table. The loading tool comprises a weak magnetic metal frame and a rubber diaphragm fixed on the weak magnetic metal frame, and the plurality of ceramic shells can be fixed on the surface of the rubber diaphragm in a dispersed manner through pressing to form a test sample frame piece. The sample conveying rack comprises a plurality of layers of slots, the test sample frames can be horizontally inserted into the slots, the sample conveying rack on one side is used for pre-storing the test sample frames to be tested, the working table is used for horizontally or vertically placing the test sample frames during testing, and the sample conveying rack on the other side is used for temporarily storing the test sample frames after testing is completed. According to the device, the test accuracy and the test efficiency can be improved on the basis of ensuring the test effectiveness.

Description

Technical Field

[0001] The utility model relates to a testing device, in particular to a supporting device for residual magnetic quantity testing. Background Art

[0002] The residual magnetic quantity testing of the HTCC ceramic shell refers to evaluating or determining whether the residual magnetic quantity of the shell meets the packaging requirements of the Hall circuit by testing the maximum residual magnetism (magnetic induction intensity B) of the ceramic shell. The measuring instruments used are a teslameter and a Hall sensor, and the testing environment requirements are that the measurement should not be carried out on a magnetic conductive workbench and in a magnetic field environment greater than the geomagnetic field intensity.

[0003] The conventional testing steps include: a) Before measurement, zero-calibrate the measuring instrument; b) Place the Hall sensing probe close to the ceramic shell to be measured; c) Slide the sensing probe over the ceramic shell to be measured; d) The displayed value of the measuring instrument is the residual magnetic value of the shell to be measured.

[0004] The existing methods for measuring residual magnetic quantity have the following problems: 1. Usually, the area within 1 meter around the residual magnetic quantity testing equipment needs to be empty, which occupies a large area, and the accuracy of the test results is easily affected by external magnetic fields; 2. Each test can only be used for a single HTCC ceramic shell, and the sequential testing is slow and inefficient; 3. There is no special carrier suitable for HTCC ceramic shells, resulting in the invalidation of test results easily due to the movement of HTCC ceramic shells during testing.

[0005] Therefore, the testing of the residual magnetic quantity of ceramic shells has the following requirements: 1. Reduce the occupied area required during the testing process, effectively shield external magnetic fields, reduce external interference, and improve the accuracy of test data; 2. Have the ability to test multiple ceramic shells in small batches to improve the testing efficiency; 3. Realize that the loading tool fixes the HTCC ceramic shell to ensure the effectiveness of the test; 4. Prevent collision damage during the product testing operation process. Summary of the Invention

[0006] Objective of the Invention: Aiming at the above-mentioned existing technology, a supporting device for residual magnetic quantity testing of HTCC ceramic shells is proposed.

[0007] Technical solution: A supporting device for measuring the residual magnetic flux of HTCC ceramic housings, comprising a magnetic field shielding box. Inside the magnetic field shielding box, there are respectively a sample transfer rack on the left and right sides. The area between the two sample transfer racks is divided into upper and lower parts. The upper layer is provided with residual magnetic flux measuring equipment, and the lower layer is provided with a workbench surface; it also includes a loading tool. The loading tool includes a weakly magnetic metal frame and a film piece fixed on the weakly magnetic metal frame. A number of ceramic housings can be fixed to the surface of the film piece by pressing to form a test sample frame; the sample transfer rack includes several layers of slots, and the test sample frame can be horizontally inserted into each slot. One side of the sample transfer rack is used to pre-store the test sample frames to be tested, the workbench surface is used to horizontally or vertically place the test sample frames during testing, and the other side of the sample transfer rack is used to temporarily store the test sample frames after the test is completed.

[0008] Further, the plate of the magnetic field shielding box includes a plastic frame in the middle layer and weakly magnetic metal layers on both sides of the plastic frame.

[0009] Further, the sample transfer rack is made of a lightweight material, and the sample transfer rack is placed inside the magnetic field shielding box and can be integrally removed from the magnetic field shielding box.

[0010] Further, the lightweight material is plastic.

[0011] Beneficial effects: The present utility model provides a supporting device for measuring the residual magnetic flux of HTCC ceramic housings in view of problems such as external interference, test errors, operation damage, and test efficiency in the operation process of measuring the residual magnetic flux of HTCC ceramic housings, and has the following advantages: 1. Compared with the traditional method, the test occupied area is reduced by the magnetic field shielding box, and external interference is reduced; 2. During the test process, the HTCC ceramic housings can be fixed, thereby reducing the test errors caused by the movement of the test samples and improving the test accuracy; 3. This device realizes the function of small-batch testing and improves the test efficiency; 4. This device is applicable to various structural types of HTCC ceramic housings. Description of the drawings

[0012] Figure 1 is the overall structural schematic diagram of the supporting device of the present utility model;

[0013] Figure 2 is the schematic diagram of assembling the test sample frame of the CFP type ceramic housing;

[0014] Figure 3 is the three-dimensional structural schematic diagram of the magnetic field shielding box;

[0015] Figure 4 is the planar structural schematic diagram of the magnetic field shielding box;

[0016] Figure 5 is Figure 4 a partial enlarged view at position A in;

[0017] Figure 6 is a three-dimensional structural schematic diagram of a sample transfer rack;

[0018] Figure 7 is a structural schematic diagram of a test sample frame of a CLCC type ceramic housing. Detailed implementation manners

[0019] The following further explains the present utility model in conjunction with the attached drawings.

[0020] As Figure 1 shown, a supporting device for measuring the residual magnetic amount of an HTCC ceramic housing includes a magnetic field shielding box 1. On the left and right sides inside the magnetic field shielding box 1, a sample transfer rack 8 is respectively provided. The area between the two sample transfer racks 8 is divided into upper and lower parts. The upper layer is provided with a residual magnetic amount testing device 10, and the lower layer is provided with a workbench surface 9.

[0021] As Figure 2 shown, the present device further includes a loading tool 7. The loading tool 7 includes a weakly magnetic metal frame 6 and a glue film sheet 5 fixed on the weakly magnetic metal frame 6. A number of CFP type ceramic housings 11 can be fixed to the surface of the glue film sheet 5 by pressing and dispersing to form a test sample frame 12. In this embodiment, the outer size of the weakly magnetic metal frame 6 is 16 cm * 16 cm; the glue film sheet 5 uses a blue single-sided adhesive plastic film, which is convenient for pasting and fixing the HTCC ceramic housing.

[0022] As Figures 3 to 5 shown, the magnetic field shielding box 1 is a cabinet structure with an open front side composed of a number of composite plates. The composite plate is composed of a plastic frame 2 in the middle layer and weakly magnetic metal layers on both sides of the plastic frame 2, which can effectively shield the external magnetic field. In this embodiment, the external size of the magnetic field shielding box 1 is 100 cm in length, 40 cm in width, and 70 cm in height.

[0023] As Figure 6 shown, the sample transfer rack 8 is designed as a cabinet with an open front side. On the inner sides of the left and right side walls of the cabinet, blocking strips for placing the test sample frame 12 are sequentially arranged at intervals from top to bottom to form slots of the sample transfer rack 8. The test sample frame 12 can be horizontally inserted into each slot, so that a number of test sample frames 12 can be sequentially arranged in a stacked manner in the sample transfer rack 8. In the magnetic field shielding box 1, one side of the sample transfer rack 8 is used to pre-store the test sample frames 12 to be tested, and the other side of the sample transfer rack 8 is used to temporarily store the test sample frames 12 after the test is completed.

[0024] The sample transfer rack 8 is made of lightweight materials such as plastic. The sample transfer rack 8 is placed inside the magnetic field shielding box 1 and can be entirely removed from the magnetic field shielding box 1.

[0025] The workbench surface 9 is used to horizontally or vertically place the test sample frame 12 during testing.

[0026] The specific steps for testing the residual magnetic flux of the HTCC ceramic shell in combination with this supporting device are as follows:

[0027] Set the magnetic field shielding box 1 on a table more than 1 meter above the ground; place the residual magnetic flux testing device 10 on the upper layer of the magnetic field shielding box 1, and its power cord passes through the power hole 4 on the back panel of the magnetic field shielding box 1 and is connected to the power supply; stick the adhesive film 5 with the adhesive side up on the weak magnetic metal frame 6 to form the loading tool 7; arrange several CFP-type ceramic shells 11 separately and fix them on the adhesive surface of the loading tool 7 by pressing and pasting to form the test sample frame 12; insert each test sample frame 12 into the slot of the sample transfer rack 8 in turn, and place one test sample frame 12 on each layer of the sample transfer rack 8; push the sample transfer rack 8 with the test sample frame 12 into the left position inside the magnetic field shielding box 1, and place the empty sample transfer rack 8 in the right position inside the magnetic field shielding box 1; take out a test sample frame 12 from the left sample transfer rack 8 and place it on the workbench surface 9 in the middle of the magnetic field shielding box 1. After completing the batch testing of each CFP-type ceramic shell 11 in the test sample frame 12 by the residual magnetic flux testing device 10, temporarily store the test sample frame 12 in the right sample transfer rack 8. This process replaces the existing method of individual testing and improves the testing efficiency; if a sample with unqualified residual magnetic flux is found during the testing process, it can be promptly removed from the test sample frame 12.

[0028] Such as Figure 7 Shown is a schematic diagram of the CLCC-type ceramic shell 13 scattered on the loading tool 7.

[0029] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A supporting device for testing the residual magnetism of HTCC ceramic housing, characterized in that: The invention comprises a magnetic field shielding box (1), wherein a sample conveying rack (8) is provided on the left and right sides of the magnetic field shielding box (1), respectively, and the area between the two sample conveying racks (8) is divided into an upper and lower part, wherein the upper layer is provided with a residual magnetism testing device (10), and the lower layer is provided with a work surface (9); the invention also comprises a loading tool (7), wherein the loading tool (7) comprises a weak magnetic metal frame (6) and a film sheet (5) fixed on the weak magnetic metal frame (6), and a plurality of ceramic shells can be dispersed and fixed to the surface of the film sheet (5) by pressing, so as to form a test sample frame (12); The sample transfer rack (8) comprises a plurality of slots, and the test sample frame (12) can be horizontally inserted into each slot. The sample transfer rack (8) on one side is used to pre-store the test sample frame (12) to be tested, and the work surface (9) is used to place the test sample frame (12) horizontally or vertically during testing. The sample transfer rack (8) on the other side is used to temporarily store the test sample frame (12) after the test is completed.

2. The supporting device for testing the residual magnetism of HTCC ceramic housing according to claim 1, characterized in that: The plate material of the magnetic field shielding box (1) comprises a plastic frame (2) in the middle layer and weak magnetic metal layers located on both sides of the plastic frame (2).

3. The supporting device for testing the residual magnetism of HTCC ceramic housing according to claim 1, characterized in that: The sample conveying rack (8) is made of a lightweight material; the sample conveying rack (8) is placed in the magnetic field shielding box (1) and can be removed from the magnetic field shielding box (1) as a whole.

4. The supporting device for testing the residual magnetism of HTCC ceramic housing according to claim 3, characterized in that: The lightweight material is plastic.

Images