Test tube sealing defect detection device

Abstract

The utility model relates to the technical field of test tube fusion sealing, and discloses a test tube fusion sealing defect detection device which comprises a rack, an adsorption assembly and an air pressure assembly, and the adsorption assembly is connected with the rack and is provided with an adsorption end for adsorbing a test tube and an exhaust end for exhausting; the air pressure assembly comprises an air pipe, an air extraction unit and a measurement sensor, the air inlet end of the air pipe is communicated with the exhaust end of the adsorption assembly, the air inlet end of the air extraction unit is communicated with the air outlet end of the air pipe, and the measurement sensor is communicated with the air pipe and used for detecting the vacuum degree value in the test tube through the air pipe and the adsorption assembly. The test tube fusion sealing defect detection device can judge the fusion sealing completion condition of the test tube according to the vacuum degree value detected by the measurement sensor.

Description

Technical Field

[0001] This utility model relates to the field of test tube sealing technology, specifically to a test tube sealing defect detection device. Background Technology

[0002] During the sealing process of the test tube, the test tube is heated and then rotated, causing it to break off from the heated area.

[0003] During the sealing process, the broken section of the test tube may not be intact, which may lead to air leakage or incomplete sealing after sealing. Currently, the integrity of the seal is usually checked manually, as the sealing equipment itself cannot detect the completion of the seal. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a test tube sealing defect detection device to solve the technical problem that the existing sealing equipment itself cannot detect the sealing completion status of the test tube.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a test tube sealing defect detection device, comprising:

[0007] frame;

[0008] An adsorption assembly, connected to the frame, has an adsorption end for adsorbing test tubes and an exhaust end for venting gas; and

[0009] The air pressure assembly includes an air tube, an air extraction unit, and a measuring sensor. The air inlet of the air tube is connected to the air outlet of the adsorption assembly, the air inlet of the air extraction unit is connected to the air outlet of the air tube, and the measuring sensor is connected to the air tube for detecting the vacuum value inside the test tube via the air tube and the adsorption assembly.

[0010] In one embodiment, the test tube sealing defect detection device further includes a drive assembly connected to the frame and the adsorption assembly, which drives the adsorption assembly to rotate.

[0011] In one embodiment, the adsorption assembly includes a suction cup and a magnetic fluid seal, the suction cup having an adsorption end for adsorbing test tubes, the magnetic fluid seal being connected to the suction cup and rotatably connected to a frame, and the magnetic fluid seal having an exhaust end for venting.

[0012] In one embodiment, the air extraction unit includes a vacuum generator and an air compressor. The vacuum generator has a vacuum port and an air supply port. The vacuum port is connected to the air outlet of the air pipe and the measuring sensor. The air outlet of the air compressor is connected to the air supply port.

[0013] In one embodiment, a vacuum filter is provided between the vacuum port and the outlet of the gas pipe.

[0014] In one embodiment, the air inlet of the vacuum filter is connected to the air pipe by a plug-in connection, and the air outlet of the vacuum filter is connected to the vacuum port through a pipe, wherein the pipe is connected to the air outlet of the vacuum filter by a plug-in connection.

[0015] In one embodiment, the pneumatic assembly further includes a fixing member, which includes a fixing plate and a plurality of clamping arms. The fixing plate is detachably connected to the frame. One end of the plurality of clamping arms is connected to the fixing plate. The clamping arms are combined in pairs to form a clamping structure. A clamping groove that cooperates with the vacuum filter is formed between the other ends of two clamping arms in the clamping structure. The two clamping arms in the clamping structure can open in a direction away from each other and have a restoring elastic force after opening.

[0016] In one embodiment, a first solenoid valve and a first speed control valve are sequentially arranged between the air compressor and the air supply port; the air outlet of the air compressor is connected to the air pipe via the second solenoid valve and the second speed control valve.

[0017] In one embodiment, the adsorption assembly further includes a guide frame connected to the frame and having a through hole that mates with the test tube.

[0018] In one embodiment, the through hole is tapered on the side away from the suction cup, and the inner diameter of the tapered end of the through hole gradually decreases along the direction close to the suction cup.

[0019] Compared with the prior art, the test tube sealing defect detection device provided by this utility model has the following features: during the sealing process, the pumping unit is connected to the exhaust end of the adsorption component through a gas pipe to form a closed vacuum system, which evacuates the inside of the test tube. The measuring sensor monitors the vacuum value in the gas pipe in real time, reflecting the vacuum state inside the test tube. After the test tube is sealed, if there is a leak, the measuring sensor will detect a low vacuum value in the test tube, indicating a defect in the sealing process. The sealing identification can determine the completion status of the sealing process based on the vacuum value detected by the measuring sensor. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the test tube sealing defect detection device provided in this embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the test tube sealing defect detection device provided in this embodiment of the utility model;

[0023] Figure 4 yes Figure 3 A magnified view of a portion of point B in the middle;

[0024] Figure 5 yes Figure 4 A magnified view of a portion of point B in the middle;

[0025] Figure 6 This is a schematic diagram of a partial structure of the pneumatic component in the test tube sealing defect detection device provided in this embodiment of the utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] Rack 1;

[0028] Adsorption assembly 2; suction cup 21; magnetic fluid seal 22; guide frame 23; through hole 23a;

[0029] Pneumatic assembly 3; air pipe 31; air extraction unit 32; measuring sensor 33; vacuum generator 321; vacuum filter 322; pipe 323; first solenoid valve 324; first speed control valve 325; second solenoid valve 326; second speed control valve 327; three-way valve 328; four-way valve 329; fixing component 34; fixing plate 341; clamping arm 342; air blowing component 35; third solenoid valve 351; third speed control valve 352; air nozzle 353;

[0030] Drive component 4; drive element 41; transmission element 42. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] To address the technical problem that existing sealing equipment cannot detect the completion of sealing of test tubes, this invention provides a test tube sealing defect detection device that can detect the completion of sealing of test tubes.

[0033] It should be noted that the test tube sealing defect detection device described in this utility model is used for, but not limited to, test tube sealing. For ease of explanation, this utility model only uses the application of the test tube sealing defect detection device to test tube sealing as an example. The principle of the test tube sealing defect detection device applied to other types of equipment is essentially the same as that applied to test tube sealing, and will not be elaborated here.

[0034] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the test tube sealing defect detection device in one embodiment of the present invention. Figure 2 yes Figure 1 The enlarged schematic diagram at point A shows that the test tube sealing defect detection device includes a frame 1, an adsorption component 2, and a pressure component 3. The adsorption component 2 is connected to the frame 1 and has an adsorption end for adsorbing the test tube and an exhaust end for venting the air. The pressure component 3 includes a gas pipe 31, a vacuum unit 32, and a measuring sensor 33. The inlet end of the gas pipe 31 is connected to the exhaust end of the adsorption component 2, the inlet end of the vacuum unit 32 is connected to the outlet end of the gas pipe 31, and the measuring sensor 33 is connected to the gas pipe 31 and is used to detect the vacuum value inside the test tube through the gas pipe 31 and the adsorption component 2.

[0035] Specifically, during the sealing process, the vacuum unit 32 is connected to the exhaust end of the adsorption component 2 through the air pipe 31 to form a closed vacuum system, which evacuates the inside of the test tube. The measuring sensor 33 monitors the vacuum value in the air pipe 31 in real time to reflect the vacuum state inside the test tube. After the test tube is sealed, if there is a leak, the measuring sensor 33 will detect that the vacuum value in the test tube is low. At this time, there is a defect in the sealing of the test tube. The sealing status of the test tube can be judged based on the vacuum value detected by the measuring sensor 33.

[0036] In order to drive the test tube to rotate during the sealing process, in one embodiment, the test tube sealing defect detection device further includes a drive assembly 4, which is connected to the frame 1 and the adsorption assembly 2, and is used to drive the adsorption assembly 2 to rotate.

[0037] The drive component 4 drives the test tube to rotate during the sealing process, ensuring that the heat is evenly distributed at the sealing point of the test tube, avoiding local overheating or underheating; improving the quality and consistency of the sealing process, and reducing sealing defects caused by uneven heating.

[0038] It should be understood that the drive component 4 can be a drive motor, drive motor, etc.; the measuring sensor 33 can be a vacuum pressure sensor and vacuum gauge, etc.

[0039] To seal the rotating test tube, therefore, as follows: Figure 2As shown, in one embodiment, the adsorption assembly 2 includes a suction cup 21 and a magnetic fluid seal 22. The suction cup 21 has an adsorption end for adsorbing test tubes, and the magnetic fluid seal 22 is connected to the suction cup 21 and rotatably connected to the frame 1. The magnetic fluid seal 22 has an exhaust end for venting.

[0040] Specifically, the magnetic fluid seal 22 has two parts that can rotate relative to each other. An air passage is formed inside the magnetic fluid seal for air to flow through. When the suction cup 21 adsorbs the test tube, the gas in the test tube is drawn away through the suction cup 21, the magnetic fluid seal and the air passage 31, making the test tube a vacuum state.

[0041] To drive the test tube to rotate, such as Figure 2 As shown, in one embodiment, the drive assembly 4 includes a drive member 41 and a transmission member 42. The drive member 41 is connected to the frame 1 and is connected to the magnetic fluid seal 22 via the transmission member 42, for driving the magnetic fluid seal 22 and the suction cup 21 to rotate.

[0042] The driving component 41 drives part of the magnetic fluid seal 22 to rotate via the transmission component 42. The rotation of part of the magnetic fluid seal 22 drives the suction cup 21 to rotate, and the suction cup 21 drives the test tube to rotate. The other part of the magnetic fluid seal 22 is connected to the air tube 31 and fixed relative to the frame 1.

[0043] In order to create a vacuum in the test tube, therefore, as Figure 3 and Figure 4 As shown, in one embodiment, the air extraction unit 32 includes a vacuum generator 321 and an air compressor (not shown in the figure). The vacuum generator 321 has a vacuum port and an air supply port. The vacuum port is connected to the air outlet of the air pipe 31 and the measuring sensor 33. The air outlet of the air compressor is connected to the air supply port.

[0044] When it is necessary to extract gas from the test tube, the air compressor provides compressed air to the air supply port of the vacuum generator 321. The internal mechanism of the vacuum generator 321 uses high-speed airflow to generate a low-pressure zone, thereby forming a vacuum at the vacuum port. Since the vacuum port is connected to the outlet end of the air pipe 31, and the other end of the air pipe 31 is connected to the inside of the test tube, under the action of vacuum, the gas in the test tube is drawn into the vacuum generator 321 through the air pipe 31. The extracted gas is then discharged to the external environment, thus realizing the vacuuming of the test tube. The measuring sensor 33 monitors the pressure change at the vacuum port in real time and judges the sealing status of the test tube based on the detected vacuum value.

[0045] In order to filter the intake air, for this purpose, such as Figure 4 and Figure 5 As shown, in one embodiment, a vacuum filter 322 is provided between the vacuum port and the outlet end of the air pipe 31.

[0046] The vacuum filter 322 can filter the gas entering the vacuum generator 321, preventing impurities from entering the vacuum generator 321.

[0047] To fix the vacuum filter 322, such as Figure 5 As shown, in one embodiment, the air inlet of the vacuum filter 322 is connected to the air pipe 31 by a plug-in connection, and the air outlet of the vacuum filter 322 is connected to the vacuum port through the pipe 323. The pipe 323 and the air outlet of the vacuum filter 322 are connected by a plug-in connection. The pneumatic assembly 3 also includes a fixing member 34, which includes a fixing plate 341 and multiple clamping arms 342. The fixing plate 341 is detachably connected to the frame 1. One end of the multiple clamping arms 342 is connected to the fixing plate 341. The clamping arms 342 are combined in pairs to form a clamping structure. A clamping groove that cooperates with the vacuum filter 322 is formed between the other ends of the two clamping arms 342 in the clamping structure. The two clamping arms 342 in the clamping structure can open in a direction away from each other, and have a restoring elastic force after opening.

[0048] After a period of use, the vacuum filter 322 needs to be replaced. To facilitate the replacement of the vacuum filter 322, in this embodiment, the pipe 323, the air pipe 31 and the vacuum filter 322 are connected by a plug-in joint. The connection between the pipe 323 and the air pipe 31 and the vacuum filter 322 can be released by unplugging the pipe 323 and the air pipe 31. Then, the two clamping arms 342 are opened so that the vacuum filter 322 can be detached from the clamping groove, which is convenient for disassembling the vacuum filter 322. When installing the vacuum filter 322, the vacuum filter 322 is plugged into the pipe 323 and the air pipe 31, and then the two clamping arms 342 are opened so that the clamping grooves of the two clamping arms 342 clamp the vacuum filter 322, which is convenient for installation.

[0049] It should be understood that the number of clamping structures can be one, two, or more. Specifically, in one embodiment, there are two clamping structures, which are parallel and spaced apart.

[0050] The vacuum filter 322 can be clamped at both ends by two clamping structures.

[0051] It should be understood that the mounting plate 341 can be detachably connected to the frame 1 by bolts, screws and clips.

[0052] In order to control the vacuum level and the opening and closing of the adsorption, in one embodiment, a first solenoid valve 324 and a first speed regulating valve 325 are sequentially arranged between the air compressor and the air supply port.

[0053] The first speed control valve 325 can finely adjust the gas flow rate entering the vacuum generator 321, thereby achieving precise control of the vacuum level; the first solenoid valve 324 can quickly open or close the airflow channel.

[0054] In order to detach the sealed test tube from the suction cup 21, such as Figure 4 and Figure 6 As shown, in one embodiment, the air compressor outlet is connected to the air pipe 31 via the second solenoid valve 326 and the second speed control valve 327.

[0055] The connection and disconnection between the air compressor and the test tube can be controlled by controlling the opening and closing of the second solenoid valve 326. When vacuum sealing is performed, the second solenoid valve 326 is closed. After the sealing is completed, the second solenoid valve 326 is opened, the airflow enters the test tube, and pushes the test tube away from the suction cup 21. The second speed regulating valve 327 can precisely adjust the speed and pressure of the airflow, thereby controlling the force and speed at which the test tube is separated from the suction cup 21.

[0056] like Figure 4 As shown, in one embodiment, the pneumatic assembly 3 further includes an air blowing component 35, which includes a third solenoid valve 351, a third speed regulating valve 352, and an air nozzle 353 that are sequentially connected to the air outlet of the air compressor. The air nozzle 353 is fixed to the frame 1, and the air blowing direction is intersected with the flame jet direction of the sealing device.

[0057] By setting the air nozzle 353, the direction of the flame jet of the sealing device can be changed, avoiding the continuous burning of the test tube by the flame jet of the sealing device. By setting the third solenoid valve 351, the third solenoid valve 351 can control the air intake and closing of the air nozzle 353. The third speed regulating valve 352 is used to regulate the airflow speed.

[0058] Specifically, the second speed control valve 327 and the vacuum filter 322 are connected to the air pipe 31 through the three-way valve 328, and the air inlet end of the first solenoid valve 324, the air outlet end of the second solenoid valve 326, and the air inlet end of the third solenoid valve 351 are connected to the air compressor through the four-way valve 329.

[0059] The air inlet of the measuring sensor 33, the vacuum port of the vacuum generator 321, and the air outlet of the pipe 323 are connected by a valve 36.

[0060] In order to ensure that the test tube rotates smoothly, therefore, as follows: Figure 2 As shown, in one embodiment, the adsorption assembly 2 further includes a guide frame 23, which is connected to the frame 1 and has a through hole 23a that mates with the test tube.

[0061] When the test tube is sealed by setting the guide frame 23, the test tube passes through the through hole 23a and is attracted by the suction cup 21. When the suction cup 21 drives the test tube to rotate, the rotating test tube is restricted by the through hole 23a to prevent the rotating test tube from shaking.

[0062] In order to allow the test tube to be inserted into the through hole 23a, in one embodiment the through hole 23a is tapered on the side away from the suction cup 21, and the inner diameter of the tapered end of the through hole 23a gradually decreases along the direction close to the suction cup 21.

[0063] In this embodiment, the tapered structure of the through hole 23a can guide the test tube into the through hole 23a.

[0064] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A device for detecting defects in test tube sealing, characterized in that, include: frame; An adsorption assembly is connected to the frame and has an adsorption end for adsorbing test tubes and an exhaust end for venting. and The air pressure assembly includes an air tube, an air extraction unit, and a measuring sensor. The air inlet of the air tube is connected to the air outlet of the adsorption assembly, the air inlet of the air extraction unit is connected to the air outlet of the air tube, and the measuring sensor is connected to the air tube for detecting the vacuum value inside the test tube via the air tube and the adsorption assembly.

2. The test tube sealing defect detection device according to claim 1, characterized in that: It also includes a drive assembly, which is connected to the frame and the adsorption assembly, and is used to drive the adsorption assembly to rotate.

3. The test tube sealing defect detection device according to claim 2, characterized in that: The adsorption assembly includes a suction cup and a magnetic fluid seal. The suction cup has an adsorption end for adsorbing test tubes. The magnetic fluid seal is connected to the suction cup and rotatably connected to the frame. The magnetic fluid seal has an exhaust end for venting.

4. The test tube sealing defect detection device according to claim 1, characterized in that: The air extraction unit includes a vacuum generator and an air compressor. The vacuum generator has a vacuum port and an air supply port. The vacuum port is connected to the air outlet of the air pipe and the measuring sensor. The air outlet of the air compressor is connected to the air supply port.

5. The test tube sealing defect detection device according to claim 4, characterized in that: A vacuum filter is provided between the vacuum port and the outlet of the gas pipe.

6. The test tube sealing defect detection device according to claim 5, characterized in that: The air inlet of the vacuum filter is connected to the air pipe by a plug-in connection, and the air outlet of the vacuum filter is connected to the vacuum port through a pipe, and the pipe is connected to the air outlet of the vacuum filter by a plug-in connection.

7. The test tube sealing defect detection device according to claim 6, characterized in that: The pneumatic assembly also includes a fixing component, which includes a fixing plate and multiple clamping arms. The fixing plate is detachably connected to the frame. One end of each clamping arm is connected to the fixing plate. The clamping arms are combined in pairs to form a clamping structure. A clamping groove that cooperates with the vacuum filter is formed between the other ends of two clamping arms in the clamping structure. The two clamping arms in the clamping structure can open in a direction away from each other, and have a restoring elastic force after opening.

8. The test tube sealing defect detection device according to claim 4, characterized in that: A first solenoid valve and a first speed regulating valve are sequentially arranged between the air compressor and the air supply port; The air compressor's outlet is connected to the air pipe via a second solenoid valve and a second speed control valve.

9. The test tube sealing defect detection device according to claim 3, characterized in that: The adsorption assembly also includes a guide frame, which is connected to the frame and has through holes that mate with the test tubes.

10. The test tube sealing defect detection device according to claim 9, characterized in that: The through hole is tapered on the side away from the suction cup, and the inner diameter of the tapered end of the through hole gradually decreases along the direction close to the suction cup.

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