Sensor airtightness detection and assembly device

Abstract

The present invention discloses a sensor airtightness detection and assembly device. The device includes a rotating platform and loading and unloading equipment, an inner airtightness detection device, an outer cover assembly device, and an outer airtightness detection device arranged around the rotating platform. The loading and unloading equipment is used to transfer the sensor base between at least one first loading conveyor line and an airtight tooling. The inner airtightness detection device is used to seal the opening of the sensor base and detect the airtightness of the inner side of the sensor base after closure. The outer cover assembly device is used to assemble the outer cover on the opening of the sensor base. The outer airtightness detection device is used to detect the airtightness of the sensor base and / or the end holes of the outer cover after assembly. During assembly, the present invention performs airtightness detection on the sensor base and the end holes of the assembled sensor respectively to eliminate airtightness defects in the sensor base and / or the connection between the sensor base and the outer cover.

Description

Technical Field

[0001] The present invention relates to the field of sensor component manufacturing, and in particular to a sensor airtightness detection and assembly device. Background Art

[0002] The sensor used for pressure detection is in contact with the external environment. If the sensor's airtightness cannot be guaranteed, the sensor cannot effectively detect pressure changes in the external environment. To ensure the effectiveness of the sensor, it is necessary to test the airtightness of the sensor interior and each end hole of the sensor. Summary of the Invention

[0003] Based on this, the first aspect of an embodiment of the present invention discloses a sensor airtightness detection and assembly device. The device includes a rotating platform and loading and unloading equipment, an inner airtightness detection device, an outer cover assembly device, and an outer airtightness detection device arranged around the rotating platform; the rotating platform is used to transfer at least one airtight tooling between the loading and unloading equipment, the inner airtightness detection device, the outer cover assembly device, and the outer airtightness detection device, the airtight tooling being used to carry a sensor base to be tested, the sensor base being provided with an opening for being closed by an outer cover; the loading and unloading equipment is used to transfer the sensor base between at least one first loading and unloading conveyor line and the airtight tooling; the inner airtightness detection device is used to close the opening of the sensor base and detect the airtightness of the inner side of the sensor base after closure; the outer cover assembly device is used to assemble the outer cover on the opening of the sensor base; and the outer airtightness detection device is used to detect the airtightness of the sensor base and / or the end hole of the outer cover after assembly.

[0004] In the disclosure of the embodiment of the invention, the rotating platform includes a driving mechanism and a turntable; the driving mechanism is used to drive the circumferential rotation of the turntable; the turntable is used to carry at least one of the airtight tooling, and the loading and unloading equipment, the inner airtight detection equipment, the outer cover assembly equipment and the outer airtight detection equipment are deployed around the turntable.

[0005] In the disclosure of the embodiment of the invention, the loading and unloading equipment includes a loading and unloading fixture, a longitudinal displacement mechanism and a transverse displacement mechanism; the loading and unloading fixture is used to clamp the sensor base; the longitudinal displacement mechanism is used to drive the loading and unloading fixture to displace in the vertical direction; the transverse displacement mechanism is used to drive the longitudinal displacement mechanism to displace in the horizontal direction.

[0006] In the disclosure of the embodiment of the invention, the inner side airtightness detection device includes a first longitudinal cylinder and a web disk that at least closes the opening of the sensor base; the first longitudinal cylinder is used to drive the web disk to close the opening of the sensor base; the web disk is provided with a first airtightness detection component on the inner side facing the sensor base, and the first airtightness detection component is used to detect the airtightness of the inner side of the sensor base after closing.

[0007] In the disclosure of the embodiment of the invention, at least one longitudinal elastic member is provided between the web and the first longitudinal cylinder.

[0008] In the disclosure of the embodiment of the invention, the outer cover assembly equipment includes an outer cover clamp and a rotating cylinder; the outer cover clamp is used to clamp the outer cover; the rotating cylinder is used to drive the outer cover clamp to rotate between at least one second feeding conveyor line and the airtight tooling.

[0009] In the disclosure of the embodiment of the invention, the outer airtightness detection device includes a second longitudinal cylinder and an airtightness detection assembly; the second longitudinal cylinder is used to drive the displacement of the airtightness detection assembly in the vertical direction; the airtightness detection assembly includes a detection disk and a second airtightness detection member; the detection disk is used to abut the end hole of the outer cover; the second airtightness detection member is used to detect the airtightness of the end hole of the outer cover after the detection disk abuts the outer cover.

[0010] In the disclosure of the embodiment of the invention, the outside airtightness detection device includes a translation mechanism; the translation mechanism is used to drive the displacement of the second longitudinal cylinder in at least one horizontal direction.

[0011] In the disclosure of the embodiment of the invention, the airtight tooling includes an elastic support and a tooling plate; the elastic support is used to support the tooling plate in a vertical direction; and the tooling plate is used to carry the sensor base.

[0012] The second aspect of the embodiment of the present invention discloses a sensor airtightness detection and assembly device. The device includes a conveyor line, a loading device, a unloading device, an inner airtightness detection device, an outer cover assembly device, and an outer airtightness detection device; the loading device, the inner airtightness detection device, the outer cover assembly device, the outer airtightness detection device, and the unloading device deployed on the conveyor line are deployed in sequence along the conveyor line; the conveyor line is used to transport at least one airtight tooling, the airtight tooling is used to carry the sensor base to be tested, and the sensor base is provided with an opening for being closed by the outer cover; the loading device is used to transfer between at least one first loading conveyor line and the airtight tooling transport the sensor base; the inner air-tightness detection equipment is used to close the opening of the sensor base and detect the air-tightness of the inner side of the sensor base after closing; the outer cover assembly equipment is used to assemble the outer cover on the opening of the sensor base; the outer air-tightness detection equipment is used to at least cover the end holes of the sensor base and / or the outer cover after assembly, and detect the air-tightness of the end holes of the sensor base and / or the outer cover after covering; the unloading equipment is used to transfer the assembled sensor between at least one third loading conveyor line and the airtight tooling.

[0013] Compared with the prior art, the embodiments of the present invention can perform airtightness testing on the sensor base and the end hole of the assembled sensor during assembly, thereby eliminating airtightness defects in the sensor base and / or the connection between the sensor base and the outer cover.

[0014] In view of the above-mentioned solutions, the present invention will be described in detail below with reference to the accompanying drawings to disclose exemplary embodiments, which will also make other features and advantages of the embodiments of the present invention clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 is a top view of the embodiment device;

[0017] Figure 2 is a structural diagram of an embodiment device;

[0018] Figure 3 It is a structural diagram of the loading and unloading equipment in the embodiment;

[0019] Figure 4 This is a structural diagram of the inside airtightness detection equipment of the embodiment;

[0020] Figure 5A structural diagram of an outer cover assembly device according to an embodiment;

[0021] Figure 6 This is a structural diagram of the outer side airtightness detection equipment of the embodiment;

[0022] Figure 7 This is a structural diagram of the airtight tooling of the embodiment;

[0023] Figure 8 2 is a cross-sectional view of the airtight tooling of the embodiment. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0025] This embodiment discloses a sensor airtightness detection and assembly device. Figure 1 The device of this embodiment includes a rotating platform 500 and a loading and unloading device 100 , an inner airtightness detection device 200 , an outer cover assembly device 300 and an outer airtightness detection device 400 , which surround the rotating platform 500 in a counterclockwise order.

[0026] The device of this embodiment is used to systematically perform airtightness testing on the interior and end holes of a pressure sensor during sensor assembly. This type of sensor generally includes a sensor base and an outer cover. The outer cover is formed with an end hole for connecting to the external environment for testing. The rotating platform 500 is used to carry the airtight tooling 600 and allow the airtight tooling 600 to pass through the loading and unloading equipment 100, the inner airtightness testing equipment 200, the outer cover assembly equipment 300, and the outer airtightness testing equipment 400 in a counterclockwise direction. The loading and unloading equipment 100 is used to clamp and transfer the sensor base on a first loading conveyor line to the airtight tooling 600 for placement, and to clamp and transfer the sensor assembled on the airtight tooling 600 to a first unloading conveyor line. The inner airtightness testing equipment 200 is used to seal the upward opening of the sensor base and, after the sensor base is sealed, specifically test the airtightness of the inner side of the sensor base. The outer cover assembly equipment 300 is used to assemble the outer cover on the opening of the sensor base. The outer airtightness detection device 400 is used to seal the end hole of the outer cover after the sensor base is assembled with the outer cover, and to detect the airtightness of the rear end hole of the cover.

[0027] Based on this, when assembling the sensor of this embodiment, the air tightness test is first performed on the sensor base to detect the air tightness in the sensor base; then the air tightness test is performed on the end hole of the sensor to detect the air tightness in the end hole of the sensor.

[0028] Combine Figure 2 As shown, in this embodiment, the rotating platform 500 includes a driving mechanism 520 and a turntable 510. The driving mechanism 520 is composed of a driving motor and a differential. The driving motor drives the turntable 510 to rotate horizontally counterclockwise through the differential. The loading and unloading equipment 100, the inner airtightness detection equipment 200, the outer cover assembly equipment 300 and the outer airtightness detection equipment 400 are arranged counterclockwise around the turntable 510. The turntable 510 has 8 slots distributed along the periphery, and the slots are used to separately install the airtight tooling 600. Then when the driving electrode is working, the turntable 510 can rotate counterclockwise, and when the turntable 510 rotates, the airtight tooling 600 can pass through the above-mentioned four devices in sequence.

[0029] In this embodiment, the loading and unloading equipment 100 is Figure 3 The diagram shows a loading and unloading bracket 110 equipped with a loading and unloading fixture 140, a longitudinal displacement mechanism 130, and a transverse displacement mechanism 120. The loading and unloading fixture 140 is driven by a pneumatic cylinder and is used to clamp the sensor base. The longitudinal displacement mechanism 130 is used to drive the loading and unloading fixture 140 in a vertical direction. The transverse displacement mechanism 120 is used to drive the longitudinal displacement mechanism 130 in a horizontal direction. When a sensor base is delivered to the first loading conveyor line, the transverse displacement mechanism 120 and the longitudinal displacement mechanism 130 drive the loading and unloading fixture 140 to clamp the sensor base.

[0030] In this embodiment, the inner airtightness detection device 200 is Figure 4 As shown, it includes a first detection bracket 210, mounted with a first longitudinal cylinder 220 and a web 230. The first longitudinal cylinder 220 is used to drive the web 230 to move vertically, and when the web 230 moves vertically downward, it completely closes the upward opening of the sensor base. A first airtightness detection member is located in the center of the web 230. The web 230 has a detection port and an inflation port on its end facing the interior of the sensor base. The detection port is used to connect to the detection equipment, while the inflation port and its pipeline are used to connect to the inflation device. When the inflation device inflates and maintains air inside the web 230 and the sensor base, the detection equipment can determine changes in air pressure inside the sensor base through the detection port and its pipeline. The first airtightness detection member is a tubular member formed with at least two channels, one connecting the external detection equipment to the detection port, and the other connecting the inflation port to the inflation device.

[0031] Preferably, the web 230 is connected to the lever of the first longitudinal cylinder 220 via a vertically retractable longitudinal elastic member. This longitudinal elastic member, such as a spring, prevents rigid collision between the web 230 and the sensor base when the web 230 contacts the upwardly-opening closed sensor base, thereby enhancing the sealing effect. Furthermore, the web 230 may have a closed-loop sealing ring formed on the end surface facing the sensor base, with the sealing ring covering the sensor base opening.

[0032] In this embodiment, the outer cover assembly equipment 300 is Figure 5 The assembly system shown in FIG. 1 includes an assembly bracket 310, an outer cover fixture 340 mounted on the assembly bracket 310, and a rotary cylinder 330. The outer cover fixture 340 is driven by a cylinder 320. The outer cover fixture 340 is capable of gripping an outer cover conveyed on the second loading conveyor line and placing the gripped outer cover on a sensor base mounted on the airtight tooling 600. The rotary cylinder 330 is used to rotate the outer cover fixture 340, thereby switching its position between the second loading conveyor line and the airtight tooling 600.

[0033] In this embodiment, the outer airtightness detection device 400 is Figure 6 It is shown that it includes a second detection bracket 410, a second longitudinal cylinder 430 installed on the second detection bracket 410, and an airtight detection component 440. The second longitudinal cylinder 430 is used to drive the displacement of the airtight detection component 440 in the vertical direction. The airtight detection component 440 includes a detection disk 441 and a second airtight detection member 442. The detection disk 441 is used to abut against the outer cover downward. The second airtight detection member 442 is connected to the end hole. The second airtight detection member 442 is a tubular member. The second airtight detection member 442 provides a channel for the tubular member to connect external detection equipment and inflation equipment to the end hole. Then, by inflating the end hole and detecting the change in air pressure after inflation, the airtightness in the end hole can be detected.

[0034] Recombination Figure 6 In this embodiment, the airtightness detection assembly 440 includes an upper bracket 443, a lower bracket 444, and a guide rod. The upper end of the guide rod is vertically slidably connected to the upper bracket 443, and the lower end is fixed to the lower bracket 444. A rod spring 445 is sleeved on the portion of the guide rod between the upper bracket 443 and the lower bracket 444. The upper bracket 443 is vertically fixedly connected to the rod end of the second longitudinal cylinder 430 on one hand, and is vertically fixedly connected to the second airtightness detection member 442 on the other hand. The lower bracket 444 is vertically fixedly connected to the detection disk 441.

[0035] Under normal circumstances, the second airtightness detection member 442 at least partially extends below the detection plate 441. Then, when performing an airtightness test on the end hole of the outer cover, the second airtightness detection member 442 first partially extends into the end hole, and the detection plate 441 then abuts against the upper surface of the outer cover. In addition, because the length of the detection plate 441 extending from below the outer cover is greater than the depth of the end hole, before the detection plate 441 abuts against the outer cover, the lower bracket 444 is forced to move vertically upward following the detection plate 441, and the spring is partially compressed, causing the lower bracket 444 to generate a vertically downward restoring force, so that the detection plate 441 can be more tightly held in the end hole.

[0036] Furthermore, the second airtightness detection part 442 passes through the center of the detection disk 441. A sliding mechanical seal can be formed between the detection disk 441 and the detection disk 441. A sealed space is formed between the inner side of the detection disk 441, the outer cover and the outer periphery of the second airtightness detection part 442, and this sealed space will at least cover the area where the outer cover has the end hole. Then, if the detection disk 441 does not seal the end hole, it is used to detect the airtightness in the end hole. Then the sealed space covering the end hole area can still ensure the sealing of the end hole to the outside to detect the airtightness. In addition, the detection disk 441 can be used to press the outer cover on the sensor base so that the sensor base and the outer cover form a tight assembly.

[0037] The external airtightness testing device 400 of this embodiment includes a translation mechanism 420. This translation mechanism 420 is composed of horizontally arranged cylinders. This translation mechanism 420 is used to drive the horizontal displacement of a second longitudinal cylinder 430. This allows the testing plate 441 to be adjusted horizontally to accommodate external covers with different end hole positions.

[0038] In this embodiment, the airtight tooling 600 is Figure 7 and Figure 8As shown, it includes an elastic support 610 and a tooling disk 620. The elastic support 610 is composed of a support base 611, a support column 612, an outer spring 613, an inner spring 614, an inner adjustment rod 616, and a support rod 615. The support base 611 is installed in a slot arranged along the circumference of the turntable 510. The support column 612 is vertically installed on the support base 611 and extends upward from the middle of the tooling disk 620. The outer spring 613 is sleeved on the part of the support column 612 between the tooling disk 620 and the support base 611. A working channel is provided through the middle of the support column 612. The inner adjustment rod 616 is arranged vertically upward and is threaded in the working channel. The lower end of the support rod 615 is slidably sleeved on the upper end of the inner adjustment rod 616. An inner spring 614 is sleeved onto the inner adjustment rod 616. The upper end of the inner spring 614 abuts the lower end of the support rod 615, which in turn abuts the support column 612. The upper end of the support rod 615 partially extends from the upper end of the support rod 615 and secures a support tray. The support tray is located within the tooling tray 620. The cross-sectional diameter of the support tray is larger than the cross-sectional diameter of the upper end of the support rod 615. Therefore, when the sensor base is relatively small, when placed within the tooling tray 620, the bottom of the sensor base contacts the support tray. The downward force applied to the support tray compresses the inner spring 614. When the sensor base is relatively large, the bottom of the sensor base contacts the tooling tray 620. The downward force applied to the tooling tray 620 compresses the outer spring 613. When the tooling tray 620 is compressed downward by a threshold distance, the bottom of the sensor base contacts the support tray, and the downward force applied to the support tray compresses the inner spring 614. Then, when the outer spring 613 and / or the inner spring 614 are compressed, the airtight tooling 600 as a whole provides a vertical upward supporting force to the sensor base, so as to enhance the sealing effect of the sensor base and the assembled outer cover during the airtightness test.

[0039] Based on this, when the turntable 510 of the device of this embodiment is equipped with multiple airtight toolings 600, the turntable 510 rotates counterclockwise to keep each airtight tooling 600 in a displacement cycle between the four devices. First, the loading and unloading equipment 100 transfers the sensor base from the outside to the airtight tooling 600. Secondly, the inner airtightness detection equipment 200 seals the sensor base on the airtight tooling 600, and detects the airtightness inside the sensor base after sealing to eliminate defects in the sensor base itself. Thereafter, the outer cover assembly equipment 300 transfers the outer cover from the outside and places it on top of the sensor base of the airtight tooling 600. Afterwards, the outer airtightness detection equipment 400 presses the outer cover and the sensor base downward, and detects the airtightness of the upper end hole of the outer cover. Finally, the loading and unloading equipment 100 transfers the sensor from the airtight tooling 600 to the outside. The device of this embodiment can perform airtightness detection on the sensor base and the end hole of the assembled sensor during sensor assembly, thereby eliminating airtightness defects in the sensor base and / or the connection between the sensor base and the outer cover.

[0040] An embodiment of the present invention discloses a sensor airtightness testing and assembly device. The device includes a linear conveyor line and a loading device, an inner airtightness testing device 200, an outer cover assembly device 300, an outer airtightness testing device 400, and a unloading device arranged along the conveyor line. The loading and unloading devices are identical to the loading and unloading device 100. The conveyor line is used to transport a plurality of airtightness fixtures 600. The airtightness fixtures 600 are used to carry sensor bases to be tested, and the sensor bases are provided with an opening for sealing with an outer cover. The loading device is used to transport the sensor bases between at least one first loading conveyor line and the airtightness fixtures 600. The inner airtightness testing device 200 is used to seal the opening of the sensor base and test the airtightness of the inner side of the sealed sensor base. The outer cover assembly device 300 is used to assemble the outer cover onto the opening of the sensor base. The outer airtightness testing device 400 is used to cover at least the end holes of the assembled sensor base and / or outer cover and test the airtightness of the covered end holes of the sensor base and / or outer cover. The unloading equipment is used to transfer the assembled sensors between at least one third loading conveyor line and the airtight tooling 600 .

Claims

1. A sensor airtightness detection and assembly device, characterized in that: The device includes a rotating platform and loading and unloading equipment, an inner side airtightness detection equipment, an outer cover assembly equipment and an outer side airtightness detection equipment arranged around the rotating platform; The rotating platform is used to transfer at least one airtight tooling between the loading and unloading equipment, the inner airtightness detection equipment, the outer cover assembly equipment and the outer airtightness detection equipment, the airtight tooling is used to carry the sensor base to be tested, and the sensor base is provided with an opening for being closed by the outer cover; The loading and unloading equipment is used to transfer the sensor base between at least one first loading conveyor line and the airtight tooling; The inner side airtightness detection device is used to seal the opening of the sensor base and detect the airtightness of the inner side of the sensor base after sealing; The outer cover assembly device is used to assemble the outer cover on the opening of the sensor base; The outer airtightness detection device is used to detect the airtightness of the sensor base and / or the end hole of the outer cover after assembly; The cam is secured to the base via a spring, and the cam is secured to the base via a spring, and the cam is secured to the base via a spring.

2. The sensor airtightness detection and assembly device according to claim 1, characterized in that: The rotating platform includes a driving mechanism and a turntable; The driving mechanism is used to drive the turntable to rotate in a circumferential direction; The turntable is used to carry at least one airtight tool, and the loading and unloading equipment, the inner airtightness detection equipment, the outer cover assembly equipment and the outer airtightness detection equipment are deployed around the turntable.

3. The sensor airtightness detection and assembly device according to claim 1, characterized in that: The loading and unloading equipment includes a loading and unloading fixture, a longitudinal displacement mechanism and a transverse displacement mechanism; The loading and unloading fixture is used to clamp the sensor base; The longitudinal displacement mechanism is used to drive the loading and unloading fixture to move in the vertical direction; The lateral displacement mechanism is used to drive the longitudinal displacement mechanism to move in a horizontal direction.

4. The sensor airtightness detection and assembly device according to claim 1, characterized in that: The inside airtightness detection device includes a first longitudinal cylinder and a web that at least closes the opening of the sensor base; The first longitudinal cylinder is used to drive the web to close the opening of the sensor base; The web is provided with a first airtightness detection component on the inner side facing the sensor base, and the first airtightness detection component is used to detect the airtightness of the inner side of the sensor base after sealing.

5. The sensor airtightness detection and assembly device according to claim 4, characterized in that: At least one longitudinal elastic member is provided between the web and the first longitudinal cylinder.

6. The sensor airtightness detection and assembly device according to claim 1, characterized in that: The outer cover assembly equipment includes an outer cover fixture and a rotating cylinder; The outer cover clamp is used to clamp the outer cover; The rotating cylinder is used to drive the outer cover fixture to rotate between at least one second feeding conveyor line and the airtight tooling.

7. The sensor airtightness detection and assembly device according to claim 1, characterized in that: The outer airtightness detection device includes a second longitudinal cylinder and an airtightness detection assembly; The second longitudinal cylinder is used to drive the displacement of the airtightness detection component in the vertical direction; The airtightness detection assembly includes a detection plate and a second airtightness detection member; The detection plate is used to abut against the end hole of the outer cover; The second airtightness detection member is used to detect the airtightness of the end hole of the outer cover after the detection plate abuts against the outer cover.

8. The sensor airtightness detection and assembly device according to claim 7, characterized in that: The outer airtightness detection device includes a translation mechanism; The translation mechanism is used to drive the second longitudinal cylinder to move in at least one horizontal direction.

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