Packaging equipment of gas sensitive sensor

Abstract

The utility model discloses packaging equipment for a gas sensitive sensor, and relates to the technical field of packaging equipment, the packaging equipment comprises a bottom plate, a pick-and-place mechanism is arranged above the bottom plate, the pick-and-place mechanism comprises a positioning pillar, the bottom of the positioning pillar is provided with a packaging groove, the inner wall of the packaging groove is fixedly provided with a hole plate, and the inner wall of the hole plate is provided with a plurality of holes. A hole plate is arranged in the packaging groove, an air bag is fixedly installed at the bottom of the hole plate and communicates with a hole in the hole plate, the air bag is of an annular structure, a first electrode is arranged at the bottom of the packaging groove and is of an annular structure, and connecting rods are fixedly installed at the two ends of the first electrode and are of an L-shaped structure. According to the utility model, the air bag is inflated and deflated, so that the gas-sensitive sensor is taken out from packaging equipment, the phenomena that pins are bent due to manual operation, a welding seam is not smooth enough when an electrode is welded and the strength of the welding seam is reduced are avoided, and the packaging qualification rate of the gas-sensitive sensor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to packaging equipment for a gas sensor. Background Art

[0002] Gas sensors are sensors used to detect gas concentration and composition. They play an extremely important role in environmental protection and safety supervision.

[0003] When packaging existing gas sensors, most of them adopt TO packaging (i.e. coaxial packaging) process, which is a packaging method widely used in gas detection instruments. It consists of a TO tube holder and a TO tube cap. These two components together form a packaging structure to protect sensitive semiconductor components. The TO tube holder not only serves as the base of the packaging component, but also provides power for it, while the tube cap can realize smooth external gas input.

[0004] However, after the existing packaging equipment completes the packaging of the gas sensor, the gas sensor needs to be manually picked out from a fixed position. Manual operation can easily cause the pins to be bent during the process of removing the gas sensor, thereby reducing the gas sensor packaging qualification rate. In addition, when the packaging equipment uses the TO packaging process to package the gas sensor, a small amount of gas may exist in the packaging cavity, which makes the weld not smooth during welding, reducing the strength of the weld.

[0005] Therefore, it is necessary to propose a packaging device for a gas sensor to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a gas sensor packaging device to solve the problem that manual operation in the process of taking out the gas sensor easily causes the pins to be bent, thereby reducing the gas sensor packaging qualification rate.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a packaging device for a gas sensor, comprising a base plate, a pick-up and placement mechanism is arranged above the base plate, the pick-up and placement mechanism comprises a positioning pillar, a packaging groove is opened at the bottom of the positioning pillar, a perforated plate is fixedly installed on the inner wall of the packaging groove, an airbag is fixedly installed on the bottom of the perforated plate, the airbag is connected to the holes on the perforated plate, and the airbag is an annular structure.

[0008] Preferably, a first electrode is provided at the bottom of the packaging groove, the first electrode is in an annular structure, connecting rods are fixedly installed at both ends of the first electrode, the connecting rods are in an L-shaped structure, sliding grooves are opened on the inner walls on both sides of the packaging groove, and the connecting rods are slidably connected in the corresponding sliding grooves, and a spring is fixedly connected to the top of the connecting rod, and the spring is fixedly connected in the sliding groove.

[0009] Preferably, a shell is fixedly installed on the top of the positioning pillar, an electric air pump is fixedly installed inside the shell, and an output end of the electric air pump is connected to the packaging groove.

[0010] Preferably, an exhaust hole is opened on the outer wall of the shell, and a plurality of the exhaust holes are provided, and the plurality of exhaust holes are distributed in a circle around the shell.

[0011] Preferably, a support column is provided below the positioning pillar, the support column is fixedly mounted on the base plate, a pin groove is provided on the top of the support column, a TO tube socket is movably mounted in the pin groove, a second electrode is provided below the TO tube socket, and the second electrode is fixedly mounted on the support column.

[0012] Preferably, a TO tube cap is arranged above the TO tube seat, and the TO tube cap is movably inserted on the first electrode.

[0013] Preferably, a control device is fixedly installed on the top of the base plate, a connecting block is fixedly installed on the side of the control device close to the positioning pillar, an electric cylinder is fixedly installed on the top of the connecting block, the telescopic end of the electric cylinder is movably inserted into the connecting block, and the telescopic end is fixedly connected to the outer shell.

[0014] Preferably, sealing rings are fixedly mounted on opposite sides of the support column and the positioning column.

[0015] The beneficial technical effect of the utility model is that: by inflating and exhausting the airbag, the gas sensor can be removed from the packaging equipment, which avoids bending of the pins caused by manual operation, uneven welds of the electrodes during welding, and reduced strength of the welds, thereby improving the qualified rate of gas sensor packaging; the TO cap is tightly fitted to the TO base through the spring, thereby realizing the packaging of the gas sensor, which avoids the TO base and the TO cap not fitting tightly enough, resulting in reduced welding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the packaging equipment structure of the gas sensor.

[0017] Figure 2 It is a schematic diagram of the structure of the pick-and-place mechanism of the utility model.

[0018] Figure 3 This is a cross-sectional view of the pick-and-place mechanism structure of the utility model.

[0019] Figure 4 For this utility model Figure 3 A magnified view of the structure in the middle.

[0020] Figure 5It is a cross-sectional view of the TO tube seat, TO tube cap, first electrode and second electrode structure of the utility model.

[0021] In the figure: 1. base plate; 2. support column; 3. positioning pillar; 4. shell; 5. electric cylinder; 6. first electrode; 7. exhaust hole; 8. electric air pump; 9. perforated plate; 10. air bag; 11. spring; 12. connecting rod; 13. second electrode; 14. TO tube seat; 15. TO tube cap; 16. connecting block; 17. control device; 18. packaging groove; 19. pin slot; 20. sealing ring. DETAILED DESCRIPTION

[0022] 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 part of the embodiments of the utility model, not all of the 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.

[0023] like Figure 1-Figure 5 As shown, the utility model provides a packaging device for a gas sensor, including a base plate 1, the base plate 1 is used to support the packaging device, a control device 17 is fixedly installed on the top of the base plate 1, and the control device 17 is composed of common control components in the prior art, which will not be described in detail here.

[0024] A pick-and-place mechanism is arranged above the base plate 1, and the pick-and-place mechanism includes a positioning pillar 3, and a support pillar 2 is arranged below the positioning pillar 3. The support pillar 2 is used to cooperate with the positioning pillar 3 to ensure that the TO tube seat 14 and the TO tube cap 15 can be stably and accurately positioned during the welding process, thereby achieving high-quality packaging. It should be noted that a TO tube seat 14 and a TO tube cap 15 constitute a TO package, and the TO tube seat 14 provides a mechanical basis for the installation of electronic components (such as semiconductors, laser diodes and simple electronic circuits); the TO tube cap 15 is used to protect the electronic components installed in the TO tube seat 14, which will not be elaborated here.

[0025] A connecting block 16 is fixedly installed on one side of the control device 17 close to the positioning pillar 3. The connecting block 16 is used to install the electric cylinder 5. The electric cylinder 5 is fixedly installed on the top of the connecting block 16. The positioning pillar 3 is controlled to be lifted and lowered by the electric cylinder 5. The telescopic end of the electric cylinder 5 is movably inserted into the connecting block 16. A shell 4 is fixedly installed on the top of the positioning pillar 3. The shell 4 is used to connect the positioning pillar 3 with the electric cylinder 5. The telescopic end is fixedly connected to the shell 4.

[0026] The support column 2 is fixedly mounted on the base plate 1 .

[0027] Furthermore, a pin groove 19 is provided at the top of the support column 2 for fixing the TO tube socket 14 , and the TO tube socket 14 is movably installed in the pin groove 19 . A packaging groove 18 is provided at the bottom of the positioning pillar 3 for placing the TO tube cap 15 .

[0028] A first electrode 6 is provided at the bottom of the packaging groove 18, and the first electrode 6 is movably mounted on the TO tube cap 15. The TO tube cap 15 is arranged above the TO tube seat 14. A second electrode 13 is provided below the TO tube seat 14, and the second electrode 13 is fixedly mounted on the support column 2. The first electrode 6 and the second electrode 13 cooperate to achieve resistance welding. It should be noted that resistance welding refers to a method of locally heating the weldment by using the resistance heat generated by the current passing through the weldment and the contact point as a heat source, and applying pressure for welding at the same time. During welding, no filling metal is required, the productivity is high, and the deformation of the weldment is small, which will not be elaborated here.

[0029] Taking into account that when the two electrodes are resistance welding, the pressure applied by the first electrode 6 on the weldment is relatively small, and the TO tube seat 14 and the TO tube cap 15 are not closely fitted, resulting in reduced strength. Therefore, connecting rods 12 are fixedly installed at both ends of the first electrode 6. The connecting rod 12 has an L-shaped structure. Sliding grooves are provided on the inner walls on both sides of the packaging groove 18, and the connecting rod 12 is slidably connected in the corresponding sliding grooves. A spring 11 is fixedly connected to the top of the connecting rod 12, and the spring 11 is fixedly connected in the sliding groove. The first electrode 6 has an annular structure, and the annular structure can better fit on the TO tube cap 15.

[0030] During specific operation, the TO tube cap 15 is placed on the TO tube seat 14, and the control device 17 controls the extension and retraction of the electric cylinder 5. The electric cylinder 5 pushes the positioning pillar 3 to fit with the support pillar 2. The first electrode 6 fits the TO tube cap 15 tightly on the TO tube seat 14 through the spring 11, and cooperates with the second electrode 13 to realize the packaging of the gas sensor, thereby avoiding the TO tube seat 14 and the TO tube cap 15 not fitting tightly enough, which leads to a decrease in welding strength.

[0031] Taking into account that there may be a small amount of gas in the package cavity, which makes the weld not smooth during welding and reduces the strength of the weld, an electric air pump 8 is fixedly installed inside the outer shell 4. The electric air pump 8 is used to extract the gas in the package cavity, and the output end of the electric air pump 8 is connected to the package groove 18.

[0032] A sealing ring 20 is fixedly installed on the opposite side of the support column 2 and the positioning column 3. The sealing ring 20 is used to improve the sealing performance of the packaging device during packaging. An exhaust hole 7 is opened on the outer wall of the shell 4. The exhaust hole 7 is used to discharge the gas extracted by the electric air pump 8. There are multiple exhaust holes 7. Multiple exhaust holes 7 can improve the exhaust efficiency, and the multiple exhaust holes 7 are distributed in a circle around the shell 4.

[0033] During operation, after the support column 2 and the positioning pillar 3 are fitted together, the packaging groove 18 and the TO tube cap 15 form a cavity, and the electric air pump 8 is started to extract the gas in the cavity through the electric air pump 8, thereby achieving the extraction of the gas existing in the cavity, avoiding the uneven weld of the electrode during welding and the reduction of the strength of the weld.

[0034] Taking into account that manual operation may easily cause the pins to bend during the process of removing the gas sensor, thereby reducing the qualified rate of gas sensor packaging, a perforated plate 9 is fixedly installed on the inner wall of the packaging groove 18. The perforated plate 9 is used to communicate with the airbag 10 to ensure that the airbag 10 does not block the gas inlet and outlet when the electric air pump 8 extracts the gas. The airbag 10 is fixedly installed on the bottom of the perforated plate 9. The airbag 10 is connected to the holes on the perforated plate 9. The airbag 10 has an annular structure, which can fit well on the TO tube cap 15 to fix the TO tube cap 15.

[0035] During the specific work, the worker puts the TO tube cap 15 into the packaging groove 18, starts the electric air pump 8, and the electric air pump 8 inflates the air bag 10, so that the air bag 10 is filled with gas and fits with the TO tube cap 15, and fixes the TO tube cap 15 (the excess gas will be blown onto the TO tube cap 15 through the perforated plate 9, and further remove the static electricity and fine dust on the TO tube cap 15);

[0036] After the TO tube cap 15 is fixed, the gas in the cavity is extracted through the above operation (when the gas in the cavity is extracted, the gas in the airbag 10 is also extracted, thereby releasing the clamping of the airbag 10 on the TO tube cap 15), and the TO tube cap 15 is welded to the TO tube socket 14, thereby realizing the packaging of the gas sensor.

[0037] After the gas sensor is packaged, the airbag 10 is inflated by the electric air pump 8 so that the airbag 10 clamps the gas sensor, and then the positioning pillar 3 is separated from the support pillar 2 by the electric cylinder 5, and the gas sensor is pulled out of the pin groove 19, and then the gas in the airbag 10 is discharged, so that the gas sensor is detached from the packaging groove 18, thereby realizing the removal of the gas sensor from the packaging equipment, avoiding bending of the pins caused by manual operation, and improving the qualified rate of gas sensor packaging.

Claims

1. A gas sensor packaging device, characterized in that: It comprises a bottom plate (1), a pick-up and placement mechanism is arranged above the bottom plate (1), the pick-up and placement mechanism comprises a positioning pillar (3), a packaging groove (18) is provided at the bottom of the positioning pillar (3), a perforated plate (9) is fixedly mounted on the inner wall of the packaging groove (18), an airbag (10) is fixedly mounted on the bottom of the perforated plate (9), the airbag (10) is connected to the holes on the perforated plate (9), and the airbag (10) is an annular structure.

2. The gas sensor packaging device according to claim 1, characterized in that: A first electrode (6) is arranged at the bottom of the packaging groove (18), the first electrode (6) is in an annular structure, connecting rods (12) are fixedly installed at both ends of the first electrode (6), the connecting rods (12) are in an L-shaped structure, sliding grooves are provided on the inner walls on both sides of the packaging groove (18), and the connecting rods (12) are slidably connected in the corresponding sliding grooves, and a spring (11) is fixedly connected to the top of the connecting rod (12), and the spring (11) is fixedly connected in the sliding groove.

3. The gas sensor packaging device according to claim 1, characterized in that: A housing (4) is fixedly mounted on the top of the positioning pillar (3), an electric air pump (8) is fixedly mounted inside the housing (4), and an output end of the electric air pump (8) is in communication with the packaging groove (18).

4. The gas sensor packaging device according to claim 3, characterized in that: An exhaust hole (7) is provided on the outer wall of the outer shell (4), and a plurality of the exhaust holes (7) are provided, and the plurality of exhaust holes (7) are distributed in a circular pattern around the outer shell (4).

5. The gas sensor packaging device according to claim 1, characterized in that: A support column (2) is arranged below the positioning pillar (3), and the support column (2) is fixedly mounted on the bottom plate (1). A pin groove (19) is provided on the top of the support column (2), and a TO tube seat (14) is movably mounted in the pin groove (19). A second electrode (13) is arranged below the TO tube seat (14), and the second electrode (13) is fixedly mounted on the support column (2).

6. The gas sensor packaging device according to claim 5, characterized in that: A TO tube cap (15) is arranged above the TO tube seat (14), and the TO tube cap (15) is movably inserted on the first electrode (6).

7. The gas sensor packaging device according to claim 1, characterized in that: A control device (17) is fixedly mounted on the top of the base plate (1), a connecting block (16) is fixedly mounted on one side of the control device (17) close to the positioning pillar (3), an electric cylinder (5) is fixedly mounted on the top of the connecting block (16), a telescopic end of the electric cylinder (5) is movably inserted into the connecting block (16), and the telescopic end is fixedly connected to the housing (4).

8. The gas sensor packaging device according to claim 6, characterized in that: A sealing ring (20) is fixedly mounted on the opposite side of the support column (2) and the positioning column (3).

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