Differential pressure sensor cup base detection tool

Abstract

The utility model discloses a differential pressure sensor cup holder detection tool, which comprises a tool fixing plate, a fixing seat is arranged on one surface of the tool fixing plate, optical shafts are arranged on two sides of the fixing seat, a safe distance is arranged between the optical shafts and the fixing seat, one end of each optical shaft is connected with one surface of the tool fixing plate, and the other end of each optical shaft is connected with a pressurization fixing plate group. An air cylinder is installed on one side of the pressurizing fixing plate set, the other face of the tool fixing plate is placed on the workbench, and an air path connector is installed in the fixing base. According to the differential pressure sensor cup base detection tool provided by the utility model, the fixed connecting pieces including the tool fixing plate, the fixing base and the pressurization fixing group are arranged, electrical performance testing and other related verification are carried out on a silicon cup base of a differential pressure sensor through the fixed connecting pieces, the operation is simple, the purpose of semi-automatic testing is basically realized, and the detection efficiency is improved. And the production efficiency is improved, the production and manufacturing cost is reduced, and the yield is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of differential pressure sensor detection, and in particular relates to a differential pressure sensor cup seat detection tool. Background Art

[0002] The differential pressure sensor is a commonly used pressure sensor that determines the pressure by measuring the pressure difference between two different positions. It is widely used in industrial automation control fields such as flow, liquid level, and temperature. It is also widely used in medical, environmental protection, and automotive fields. The pressure of the measured medium is converted into an electrical signal using the sensitive element of the pressure sensor, and then the pressure difference between two different positions is measured through a differential circuit.

[0003] After the cup holder of the differential pressure sensor is wired and bonded with adhesive, the silicon cup needs to be pressurized to check whether the chip inside the silicon cup has fallen off and whether the sensor signal output is qualified. The prior art uses a multimeter to test the six Kovar tubes of the silicon cup of the differential pressure sensor in sequence. This has low test efficiency and is not conducive to mass production. More importantly, since the silicon cup of the differential pressure sensor cannot be pressurized, its dynamic parameters at room temperature cannot be detected, which is not conducive to quality assurance of the cup holder of the differential pressure sensor.

[0004] Therefore, there is an urgent need for a differential pressure sensor cup seat detection tooling to solve the problem that the existing detection method has low efficiency in one-by-one detection and cannot perform pressure testing on the silicon cup of the differential pressure sensor, thereby improving production efficiency, reducing production costs, and increasing the yield rate. Utility Model Content

[0005] The purpose of the utility model is to overcome the problems of low efficiency of the existing detection method of one by one detection and inability to perform pressure test on the silicon cup of the differential pressure sensor, and provide a differential pressure sensor cup seat detection tooling to realize semi-automatic testing of the differential pressure sensor cup seat.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A differential pressure sensor cup seat detection tooling includes a tooling fixing plate, a fixing seat is installed on one side of the tooling fixing plate, optical axes are arranged on both sides of the fixing seat, a safety distance is arranged between the optical axis and the fixing seat, one end of the optical axis is connected to one side of the tooling fixing plate, the other end of the optical axis is connected to a pressurized fixing plate group, a cylinder is installed on one side of the pressurized fixing plate group, the other side of the tooling fixing plate is placed on a workbench, and an air path interface is installed in the fixing seat.

[0008] Furthermore, the pressurized fixing plate group includes a connecting fixing plate, one side of the connecting fixing plate is connected to the cylinder, and the other side of the connecting fixing plate is connected to the other end of the optical axis.

[0009] Furthermore, the optical axis includes a main optical axis and a secondary optical axis, and a bearing is installed between the main optical axis and the secondary optical axis.

[0010] Furthermore, the pressurized fixing plate group includes a tightening fixing plate, and two sides of the tightening fixing plate are connected to the bearings.

[0011] Furthermore, both the connecting fixing plate and the tightening fixing plate are provided with through holes, and the pressurizing end of the cylinder passes through the through holes of the connecting fixing plate and the tightening fixing plate.

[0012] Further, the secondary optical axis is arranged between the other surface of the connecting fixing plate and the one surface of the pressing fixing plate, and the primary optical axis is arranged between the other surface of the pressing fixing plate and the one surface of the tooling fixing plate.

[0013] Furthermore, the fixing seat includes a first fixing seat and a second fixing seat, one end of the second fixing seat is installed on one side of the tooling fixing plate, and the other end of the second fixing seat is connected to one end of the first fixing seat.

[0014] Furthermore, a needle plate is arranged between one end of the first fixing seat and the other end of the second fixing seat, a hole is arranged on the needle plate, a spring needle is arranged in the hole, and the spring needle connects the kovar pin of the cup seat of the differential pressure sensor to be tested and the oil filling pipe.

[0015] Furthermore, a first air path interface is provided in the inner cavity of the first fixing seat, and the first air path interface is connected to the positive pressure end of the cup seat of the differential pressure sensor to be measured.

[0016] Furthermore, a second air circuit interface is provided in the inner cavity of the second fixing seat, and the second air circuit interface is connected to the negative pressure end of the cup seat of the differential pressure sensor to be measured.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model provides a differential pressure sensor cup holder detection tooling in which fixed connecting parts are arranged: a tooling fixing plate, a fixing seat and a pressurized fixing group. The electrical performance test and other related verifications of the silicon cup holder of the differential pressure sensor are performed through the fixed connecting parts. The operation is simple, and the purpose of semi-automatic testing is basically achieved, thereby improving production efficiency, reducing production costs, and increasing the rate of finished products.

[0019] The utility model adopts a differential pressure sensor cup seat detection tool to detect the cup seat of the differential pressure sensor, which is greatly improved compared with the existing test method. The sensor can be dynamically tested under pressurized conditions, and the test items are more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 The utility model is a schematic diagram of the overall appearance of a differential pressure sensor cup holder detection tooling.

[0022] Figure 2 It is a cross-sectional view of a cup holder detection tooling for a differential pressure sensor of the utility model.

[0023] Among them, 1 is a cylinder; 2 is a connecting fixing plate; 3 is a tightening fixing plate; 4 is a bearing; 5 is an optical axis; 6 is a first fixing seat; 7 is a needle plate; 8 is a second fixing seat; and 9 is a tooling fixing plate. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] Example

[0027] See also Figure 1 and Figure 2 A differential pressure sensor cup seat detection tooling includes a tooling fixing plate 9, a fixing seat is installed on one side of the tooling fixing plate 9, optical axes 5 are arranged on both sides of the fixing seat, a safety distance is arranged between the optical axis and the fixing seat, one end of the optical axis 5 is connected to one side of the tooling fixing plate 9, and the other end of the optical axis 5 is connected to a pressurized fixing plate group, a cylinder 1 is installed on one side of the pressurized fixing plate group, the other side of the tooling fixing plate 9 is placed on a workbench, and an air path interface is installed in the fixing seat.

[0028] Preferably, the pressurized fixing plate assembly includes a connecting fixing plate 2 , one side of the connecting fixing plate 2 is connected to the cylinder 1 , and the other side of the connecting fixing plate is connected to the other end of the optical axis 5 .

[0029] Preferably, the optical axis 5 includes a main optical axis and a secondary optical axis, and a bearing 4 is installed between the main optical axis and the secondary optical axis.

[0030] Preferably, the pressurized fixing plate group includes a tightening fixing plate 3 , and two sides of the tightening fixing plate 3 are connected to the bearings 4 .

[0031] Preferably, both the connecting fixing plate 2 and the tightening fixing plate 3 are provided with through holes, and the pressurizing end of the cylinder 1 passes through the through holes of the connecting fixing plate 2 and the tightening fixing plate 3 .

[0032] Preferably, the secondary optical axis is arranged between the other surface of the connecting fixing plate 2 and the one surface of the pressing fixing plate 3 , and the primary optical axis is arranged between the other surface of the pressing fixing plate 3 and the one surface of the tooling fixing plate 9 .

[0033] Preferably, the fixing seat includes a first fixing seat 6 and a second fixing seat 8 , one end of the second fixing seat 8 is installed on one side of the tooling fixing plate 9 , and the other end of the second fixing seat 8 is connected to one end of the first fixing seat 6 .

[0034] Preferably, a needle plate 7 is arranged between one end of the first fixing seat 6 and the other end of the second fixing seat 8, a hole is arranged on the needle plate 7, a spring needle is arranged in the hole, and the spring needle connects the kovar pin of the cup seat of the differential pressure sensor to be measured and the oil filling pipe.

[0035] Preferably, a first gas circuit interface is provided in the inner cavity of the first fixing seat 6, and the first gas circuit interface is connected to the positive pressure end of the cup seat of the differential pressure sensor to be measured.

[0036] Preferably, the inner cavity of the second fixing seat 8 is provided with a second gas circuit interface, and the second gas circuit interface is connected to the negative pressure end of the cup seat of the differential pressure sensor to be measured.

[0037] Optionally, the cylinder uses SDA50×35 thin cylinder;

[0038] Optionally, the bearing adopts LM8SUU type linear bearing;

[0039] Optionally, the optical axis uses an 8mm stainless steel optical axis;

[0040] Optionally, the spring pin uses a 2.5mm spring pin.

[0041] The utility model adopts a differential pressure sensor cup seat detection tool to detect the silicon cup seat of the differential pressure sensor. The detection method includes the following steps:

[0042] First, the silicon cup Kovar pin and the oil-filled tube of the differential pressure sensor to be tested, which have been bound with gold wire, are placed upside down in the second fixing seat 8;

[0043] Then, the first fixing seat 6 is mounted on the back of the silicon cup of the differential pressure sensor to be measured;

[0044] After placement is completed, click the cylinder action switch to press the cylinder down to the surface of the first fixing seat 6, and the first fixing seat 6 and the second fixing seat 8 are fixed;

[0045] Select the corresponding pressure according to the different measuring ranges of the sensor being tested, perform a pressure test on the sensor through the gas circuit interface, and record the signal output value of the sensor.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit its protection scope. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the utility model, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the utility model, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the utility model.

Claims

1. A differential pressure sensor cup seat detection tooling, characterized in that: The tool fixing plate (9) comprises a fixture fixing plate (9), a fixing seat is installed on one side of the tool fixing plate (9), an optical axis (5) is arranged on both sides of the fixing seat, a safety distance is arranged between the optical axis and the fixing seat, one end of the optical axis (5) is connected to one side of the tool fixing plate (9), the other end of the optical axis (5) is connected to a pressurized fixing plate group, a cylinder (1) is installed on one side of the pressurized fixing plate group, the other side of the tool fixing plate (9) is placed on a workbench, and an air path interface is installed in the fixing seat.

2. A differential pressure sensor cup seat detection tooling according to claim 1, characterized in that: The pressurized fixing plate group comprises a connecting fixing plate (2), one side of the connecting fixing plate (2) is connected to the cylinder (1), and the other side of the connecting fixing plate is connected to the other end of the optical axis (5).

3. A differential pressure sensor cup seat detection tooling according to claim 1, characterized in that: The optical axis (5) comprises a main optical axis and a secondary optical axis, and a bearing (4) is installed between the main optical axis and the secondary optical axis.

4. A differential pressure sensor cup seat detection tooling according to claim 3, characterized in that: The pressurized fixing plate assembly comprises a tightening fixing plate (3), and two sides of the tightening fixing plate (3) are connected to the bearings (4).

5. A differential pressure sensor cup seat detection tooling according to claim 2 or 4, characterized in that: The connecting fixing plate (2) and the tightening fixing plate (3) are both provided with through holes, and the pressurizing end of the cylinder (1) passes through the through holes of the connecting fixing plate (2) and the tightening fixing plate (3).

6. A differential pressure sensor cup seat detection tooling according to claim 2 or 4, characterized in that: The secondary optical axis is arranged between the other side of the connecting fixing plate (2) and the one side of the pressing fixing plate (3), and the primary optical axis is arranged between the other side of the pressing fixing plate (3) and the one side of the tool fixing plate (9).

7. The differential pressure sensor cup seat detection tooling according to claim 1, characterized in that: The fixing seat comprises a first fixing seat (6) and a second fixing seat (8), one end of the second fixing seat (8) is installed on one side of the tooling fixing plate (9), and the other end of the second fixing seat (8) is connected to one end of the first fixing seat (6).

8. The differential pressure sensor cup seat detection tooling according to claim 3, characterized in that: A needle plate (7) is arranged between one end of the first fixing seat (6) and the other end of the second fixing seat (8), a hole is arranged on the needle plate (7), a spring needle is arranged in the hole, and the spring needle is connected to the kovar pin of the cup seat of the differential pressure sensor to be measured and the oil filling pipe.

9. A differential pressure sensor cup seat detection tooling according to claim 3, characterized in that: The inner cavity of the first fixing seat (6) is provided with a first gas path interface, and the first gas path interface is connected to the positive pressure end of the cup seat of the differential pressure sensor to be measured.

10. A differential pressure sensor cup seat detection tooling according to claim 3, characterized in that: The inner cavity of the second fixing seat (8) is provided with a second gas path interface, and the second gas path interface is connected to the negative pressure end of the cup seat of the differential pressure sensor to be measured.

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