A valve airtightness testing device for an air pump

Abstract

This invention provides a valve airtightness testing device for an air pump, comprising a feeding section for conveying valves to the test unit; a correction section for correcting the position of the valves, the correction section including an elastic mesh bag disposed below the feeding cylinder for sliding and conveying the valves; and a transfer section for transferring the valves to the test unit, the transfer section including a clamping plate for clamping and transferring the corrected valves. By setting the elastic mesh bag, the valves falling from the feeding cylinder are buffered and their posture adjusted, and the valves falling from the elastic mesh bag maintain the same posture, making it easy for the clamping plate to directly transfer the valves to the test unit for airtightness testing. This eliminates the need for manual operation, resulting in high work efficiency. The movement trajectory of the clamping plate is simple, and the action can be completed using a simple and inexpensive electric rod or similar device, improving upon the problem of complex structure and movement of robotic arms in robotic arm grasping methods and reducing usage costs.

Description

Technical Field

[0001] This invention relates to the field of valve manufacturing technology, and in particular to a valve airtightness testing device for an air pump. Background Technology

[0002] When starting an air pump, the air release valve needs to be opened to expel the air from the chamber and create a vacuum inside the chamber in order to maximize the pump's efficiency. Excessive internal pressure may prevent air from being released, resulting in poor performance and a bad user experience.

[0003] Chinese Patent CN 113945325 A discloses a gate valve airtightness testing device and method, including a testing platform, a height-adjustable test plate, and an indicator plate. A connecting pipe is connected to the test plate, one of which is connected to a corrugated air bladder. A buffer pipe is connected to the open end of the connecting pipe, and a sealing valve is connected to the connecting pipe. This invention, by fixing the gate valve to be tested onto the connecting pipe, which is connected to the test plate, and by squeezing the corrugated air bladder to inflate the connecting pipe with gas, and observing the dynamics of the indicator plate within the test plate, allows for direct testing of the airtightness of the gate valve's bottom channel. This enables testing of the gate valve's airtightness itself without the need for other components, eliminating result deviations caused by the airtightness defects of other components.

[0004] However, this technical solution still has some problems. When conducting the airtightness test, the valve needs to be placed between two sealing plates on the test bench. Then, one of the sealing plates moves to clamp and seal both ends of the valve before the airtightness test is performed. Due to the special structure of the valve, its overall shape is an irregular T-shape, and the valves stacked together are in a disorderly position, making it difficult to directly transport and position them. If a robot or other device is used to adjust the valve's posture and transport it, these electronically controlled robots are not only too complex in structure, but also have high usage and maintenance costs. Therefore, in order to save production costs, in actual production, the manual operation method is generally used to install the valve between the two sealing plates on the test bench, which results in low work efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a valve airtightness testing device for an air pump. Through the cooperation of an elastic cloth bag and a limiting plate, the device automatically adjusts the valve's posture to facilitate valve transfer, thereby improving production efficiency and solving the problems of difficulty in directly transferring stacked valves and low efficiency of manual transfer.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An airtightness testing device for a valve used in an air pump includes a platform with multiple test units for airtightness testing of the valve, and further includes:

[0008] A feeding section is provided on the platform for conveying valves to the test unit, the feeding section including a material cylinder for placing the valves;

[0009] A correction unit for correcting the position of a valve, the correction unit including an elastic mesh bag disposed below the material cylinder for sliding and conveying the valve;

[0010] The valve is transferred to a transfer unit at the test unit location, the transfer unit including a clamping plate that holds the calibrated valve in place and transfers it; and

[0011] A transmission section, including a conveyor belt, is provided below the test unit to transport the valve that has completed the airtightness test.

[0012] Specifically, the valve is equipped with a knob, below which is a narrow section; the test unit can be a valve airtightness tester, which is equipped with two fixed blocking plates and a movable blocking plate that respectively block both ends of the valve. The fixed blocking plate is fixedly installed on the platform, and the movable blocking plate can move back and forth along the Z-axis; the calibration unit is installed on the platform, and the top of the platform is equipped with an external support. The material cylinder is installed on the external support, and the clamping plate is movably installed on the external support. The clamping plate is driven to move by a device such as an electric telescopic rod.

[0013] As a preferred embodiment, the elastic mesh bag comprises:

[0014] A fixing plate fixedly installed on the platform; and

[0015] An elastic fabric is provided between the fixed plates, and the elastic fabric and the fixed plates form a channel structure that runs vertically through each other.

[0016] Specifically, elastic fabrics can be made of materials such as elastic nylon mesh that have elastic deformation and can automatically recover their deformation;

[0017] When conducting an airtightness test on a valve, the valve is placed in a material cylinder and falls sequentially into an elastic mesh bag. The elastic cloth wraps around the valve, and the valve slides down slowly under its own weight. During the slide, the valve continuously adjusts its center of gravity so that its center of gravity is located downwards. Therefore, the valves falling from the bottom of the elastic mesh bag are all in a fixed position with their center of gravity facing downwards, which completes the valve correction function. This eliminates the trouble of manually adjusting the position of the valve, improves work efficiency, facilitates subsequent valve removal operations, and is suitable for automated production lines.

[0018] By setting up an elastic cloth to guide and slow down the valve, the height of the elastic mesh bag can be reduced, thus reducing the space occupied, while giving the valve enough time to complete the function of center of gravity adjustment.

[0019] The valve, which is in a fixed position, can be directly transferred between the two blocking plates of the test unit using the clamping plate. Once the movement is initiated, the two blocking plates seal both ends of the valve, and then the valve is subjected to an airtightness test.

[0020] As another preferred embodiment, the transfer unit further includes:

[0021] A limiting plate is slidably installed on the platform and located below the elastic mesh bag. The limiting plate is provided with a slot for fixing the valve. The distance between the limiting plate and the elastic mesh bag is matched with the height of the slot.

[0022] A push plate fixedly mounted on the card plate for pushing the limiting plate open; and

[0023] A switch is provided on the limiting plate to control the activation of the card plate.

[0024] Specifically, the platform is equipped with an inner support frame, on which a guide rail is installed, and a limit plate is slidably installed inside the guide rail.

[0025] As a preferred embodiment, the transfer unit further includes a positioning mechanism for fixing the limiting plate, the positioning mechanism comprising:

[0026] A telescopic rod, installed at an angle between the platform and the limiting plate, is located outside the elastic mesh bag; and

[0027] Compression springs used to extend the telescopic rod.

[0028] Specifically, the two ends of the telescopic rod are hinged to the inner support and the limiting plate, respectively. The compression spring is sleeved on the outside of the telescopic rod, and the telescopic rod can maintain a stable tilted extension state under the push of the compression spring. The limiting plate is blocked below the elastic mesh bag and maintains a stable position under the action of the telescopic rod.

[0029] As another preferred embodiment, the calibration unit further includes a calibration strip fixedly mounted on the platform and located above the test unit, the width of the calibration strip being smaller than the width of the slot, and the calibration strip being located below the limiting plate.

[0030] Specifically, the calibration strip is fixedly installed on the inner bracket.

[0031] When the valve slides from the elastic mesh bag onto the limit plate, the bottom of the valve touches the switching element, causing the locking plate to start moving. At this time, the top of the valve is inside the elastic mesh bag, which keeps the valve stable and prevents it from falling.

[0032] After the clamping plate is activated, it first moves along the negative X-axis, i.e., to the left, and locks the valve knob below through the clamping groove, thus locking the valve. After the clamping plate continues to move to the left, it pushes the limiting plate to the left by the push plate, and drives the telescopic rod to deflect in the opposite direction. The telescopic rod deflects in the opposite direction and drives the limiting plate to move a longer distance to the left, leaving space for the clamping plate to move downward. After the clamping plate drives the valve to the far left, the left side of the valve contacts the calibration bar. At this time, the valve remains fixed in the horizontal direction under the combined action of the calibration bar and the clamping groove.

[0033] Then, the starting plate moves down along the Y-axis, placing the valve between the movable and fixed blocking plates for an airtightness test;

[0034] This solution enables the automatic correction of valve positions and the transfer of valves to the test unit for testing without manual operation. The movement trajectory of the clamping plate is simple, and the action can be completed by simple and inexpensive electric rods and other devices. This improves the problem of the relatively complex structure and movement of robotic arms in the gripping method and reduces the cost of use.

[0035] As a preferred embodiment, the transfer unit further includes:

[0036] A driven plate located at the bottom of the limiting plate; and

[0037] A lever plate is rotatably mounted on the card plate for pushing the driven plate. The top of the lever plate is provided with a ramp corresponding to the driven plate. The lever plate has a unidirectional rotating structure.

[0038] Specifically, the clamping plate moves the valve between the two blocking plates. After the blocking plates clamp the valve, the clamping plate moves to the right and is offset from the valve.

[0039] After the airtightness test is completed, the movable plug plate is reset and separated from the valve, and the valve falls onto the conveyor belt under the action of gravity;

[0040] After completing one valve transfer, the clamping plate needs to be reset. The clamping plate first moves upward along the Y-axis, and then the driven plate is pressed to the right by the push plate, thereby driving the limit plate to move to the right and reset. Then, the clamping plate moves to the rightmost end and then moves upward to complete the reset. Through this setting, the function of automatically resetting the limit plate is realized during the clamping plate reset process. The structure is simple and easy to use.

[0041] As another preferred embodiment, the feeding section further includes:

[0042] An active rotating wheel is mounted on the platform and located outside the elastic mesh bag;

[0043] Evenly distributed on the rotating wheel are partitions used to separate the valves within the elastic mesh bag; and

[0044] A drive mechanism for driving the rotation of the wheel.

[0045] Specifically, the rotating wheel is mounted on the outer support.

[0046] As a preferred embodiment, the drive mechanism includes:

[0047] A driven gear is provided on the rotating wheel;

[0048] A rack plate is slidably installed in the platform and engages with the driven gear in one direction. The bottom end of the rack plate abuts against the clamping plate, and a support spring is installed on the rack plate.

[0049] Specifically, the rack plate is equipped with a pawl that meshes with the gear, and the pawl and the driven gear form a unidirectional rotation structure.

[0050] As another preferred embodiment, the driven gears are symmetrically distributed on both sides of the elastic cloth, and the two driven gears rotate synchronously in opposite directions through a transmission gear.

[0051] Specifically, in the initial state as shown in the figure, both the left and right partitions compress the elastic fabric, thus dividing the elastic fabric into upper and lower parts. The valve inside the cylinder is blocked above these two partitions; the rack plate is pushed upward by the clamping plate.

[0052] During material feeding, the rotating wheel is started to rotate at a fixed amplitude. The rotating wheel drives the partition to rotate once. The partition pushes the valve at the bottom of the elastic mesh bag down. After the valve falls onto the limit plate, it triggers the movement of the clamping plate, which transfers the valve to the test unit for airtightness testing. After the clamping plate moves down, the rack plate moves downward under the push of the support spring.

[0053] After the chuck moves up and resets, it presses the rack plate to move up, and the rack plate drives the partition to rotate, continuing to release the next valve. In this way, the subsequent material feeding is intermittently and automatically carried out when the machine starts up, eliminating the trouble of always needing to electrically control the material feeding. The structure is simple and saves on operating costs.

[0054] As a preferred embodiment, the material cylinder is movably mounted on the platform, and the bottom of the material cylinder is provided with a conduit that inserts into the interior of the elastic mesh bag.

[0055] Specifically, this setting allows the barrel to oscillate, reducing the likelihood of valve blockage within the barrel.

[0056] As another preferred embodiment, to facilitate the test unit in fixing the valve held by the clamping plate, the clamping plate can be improved, wherein the clamping plate includes:

[0057] Fixed support plate; and

[0058] Two clamps are slidably mounted on the fixed support plate, and a return spring is installed on the clamps.

[0059] Specifically, the push plate is set on the fixed support plate. In the initial state, the two clamping plates are fixed under the support of the return spring, which can hold the valve. During the process of the movable plug plate moving to clamp the valve, the valve will move upward in the Z-axis. The flexibility of the return spring allows the valve to move smoothly and be assembled between the two plug plates.

[0060] The beneficial effects of this invention are as follows:

[0061] (1) By setting up an elastic mesh bag, the valve falling from the barrel is buffered and its posture is adjusted. The valve falling from the elastic mesh bag maintains the same posture, which makes it easy for the clamping plate to directly transfer the valve to the test unit for airtightness test. No manual operation is required, the work efficiency is high, the movement trajectory of the clamping plate is simple, and the action can be completed by a simple structure and low cost electric rod and other devices. This improves the problem of the relatively complex structure and action of the robotic arm in the robotic arm grasping method and reduces the cost of use.

[0062] (2) The present invention receives the valve falling from the elastic mesh bag by setting a limiting plate, so that the clamping plate accurately clamps the valve. At the same time, after the clamping plate moves, it pushes the limiting plate open. By setting a positioning mechanism, the moving distance of the limiting plate is expanded, so as to make enough space for the transfer action of the clamping plate.

[0063] (3) By setting up a partition, the present invention allows material to be fed intermittently into the elastic mesh bag, which improves the situation where multiple valves fall into the elastic mesh bag at the same time, which may cause congestion or affect the falling posture.

[0064] (4) By setting a driving mechanism, the card plate can automatically drive the partition to rotate for intermittent feeding when it is reset. In the continuous airtightness test, there is no need to control the feeding through an electric mechanism, thus reducing the cost of use.

[0065] In summary, the present invention has the advantages of adjusting the valve posture, facilitating valve transfer for airtightness testing, enabling automatic continuous operation, high work efficiency, simple structure, and low operating cost. Attached Figure Description

[0066] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0067] Figure 2 This is a partial front view of the feeding section and the transfer section of the present invention;

[0068] Figure 3 This is a partial schematic diagram of the back of the feeding section and the transfer section of the present invention;

[0069] Figure 4 This is a schematic diagram of the test unit and calibration section of the present invention;

[0070] Figure 5 This is an exploded view of the correction section of the present invention;

[0071] Figure 6 This is a partial schematic diagram of the correction section and the transfer section of the present invention;

[0072] Figure 7 This is a cross-sectional view of the correction section of the present invention;

[0073] Figure 8 For the present invention Figure 7 Enlarged view of section A in the middle;

[0074] Figure 9 This is a schematic diagram showing the mating state of the card plate and the calibration strip of the present invention;

[0075] Figure 10 This is a schematic diagram of the driving mechanism of the present invention;

[0076] Figure 11 This is an exploded view of the card plate in Embodiment 3 of the present invention;

[0077] Figure 12 This is a schematic diagram of the valve of the present invention. Detailed Implementation

[0078] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0079] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0080] Example 1

[0081] like Figure 1-6 As shown, this embodiment provides a valve airtightness testing device for an air pump, including a platform 1, on which multiple test units 2 are provided for airtightness testing of valves, and further including:

[0082] A feeding section 3 is provided on the platform 1 for conveying valves to the test unit 2. The feeding section 3 includes a material cylinder 31 for placing the valves.

[0083] The calibration unit 4 for calibrating the position of the valve includes an elastic mesh bag 41 disposed below the material cylinder 31 for sliding and conveying the valve.

[0084] The transfer unit 5, which transfers the valve to the position of the test unit 2, includes a clamping plate 51 that holds the calibrated valve in place and transfers it; and

[0085] A transmission section 6 is provided below the test unit 2 to transport the valve that has completed the airtightness test. The transmission section 6 includes a transmission belt 61.

[0086] Specifically, the valve is equipped with a knob 001, and below the knob 001 is a narrow section; the test unit 2 can be a valve airtightness tester, which is equipped with two fixed blocking plates 201 and movable blocking plates 202 that block both ends of the valve respectively. The fixed blocking plate 201 is fixedly installed on the platform 1, and the movable blocking plate 202 can move back and forth along the Z-axis; the calibration unit 4 is installed on the platform 1, and the top of the platform 1 is equipped with an outer support 101. The material cylinder 31 is installed on the outer support 101, and the clamping plate 51 is movably installed on the outer support 101. The clamping plate 51 is driven to move by a device such as an electric telescopic rod 551.

[0087] like Figure 5-7 As shown, the elastic mesh bag 41 further includes:

[0088] The fixing plate 411 is fixedly installed on the platform 1; and

[0089] An elastic cloth 412 is provided between the fixed plates 411, and the elastic cloth 412 and the fixed plates 411 form a channel structure that runs vertically through each other.

[0090] Specifically, the elastic fabric 412 can be made of materials such as elastic nylon mesh that have elastic deformation and can automatically recover their deformation;

[0091] When conducting an airtightness test on a valve, the valve is placed in a material cylinder 31 and falls sequentially into an elastic mesh bag 41. The elastic cloth 412 wraps around the valve, and the valve slides down slowly under its own weight. During the slide, the valve continuously adjusts its center of gravity so that its center of gravity is located downward. Therefore, the valves falling from below the elastic mesh bag 41 are all in a fixed position with their center of gravity facing downward, thus completing the valve correction function. This eliminates the trouble of manually adjusting the position of the valve, improves work efficiency, facilitates subsequent valve removal operations, and is suitable for automated production line production.

[0092] By setting the elastic cloth 412 to guide and slow down the valve, the height of the elastic mesh bag 41 is reduced, the space occupied is reduced, and the valve has enough time to complete the function of center of gravity adjustment.

[0093] The valve in a fixed position can be directly transferred to the space between the two blocking plates in the test unit 2 via the clamp plate 51. The movement is initiated, and the two blocking plates seal both ends of the valve. Then, the valve is subjected to an airtightness test.

[0094] like Figure 4-7 As shown, the transfer unit 5 further includes:

[0095] A limiting plate 52 is slidably installed on the platform 1 and located below the elastic mesh bag 41. The locking plate 51 is provided with a locking groove 511 for fixing the valve. The distance between the limiting plate 52 and the elastic mesh bag 41 is matched with the height of the locking groove 511.

[0096] A push plate 53 fixedly mounted on the card plate 51 for pushing the limiting plate 52 open; and

[0097] A switch 54 is provided on the limiting plate 52 to control the activation of the card plate 51.

[0098] Specifically, platform 1 is provided with an inner support 102, and a guide rail 1021 is installed on the inner support 102. The limiting plate 52 is slidably installed in the guide rail 1021.

[0099] like Figure 5 As shown, the transfer unit 5 further includes a positioning mechanism 55 for fixing the limiting plate 52, the positioning mechanism 55 including:

[0100] A telescopic rod 551, installed at an angle between the platform 1 and the limiting plate 52, is located on the outside of the elastic mesh bag 41; and

[0101] Compression spring 552 for expanding the telescopic rod 551.

[0102] Specifically, the two ends of the telescopic rod 551 are hinged to the inner bracket 102 and the limiting plate 52 respectively. The compression spring 552 is sleeved on the outside of the telescopic rod 551, and the telescopic rod 551 can maintain a stable tilted extension state under the push of the compression spring 552; the initial state is as follows: Figure 6 As shown, the limiting plate 52 is positioned below the elastic mesh bag 41 and remains stable under the action of the telescopic rod 551.

[0103] like Figure 6-9 As shown, the calibration unit 4 further includes a calibration strip 42 fixedly installed on the platform 1 and located above the test unit 2. The width of the calibration strip 42 is smaller than the width of the slot 511, and the calibration strip 42 is located below the limiting plate 52.

[0104] Specifically, the calibration strip 42 is fixedly installed on the inner bracket 102.

[0105] When the valve slides from the elastic mesh bag 41 onto the limit plate 52, the bottom end of the valve touches the switch 54, causing the clamping plate 51 to start moving. At this time, the top end of the valve is inside the elastic mesh bag 41, which keeps the valve stable and prevents it from falling.

[0106] After the clamping plate 51 is activated, it first moves along the negative X-axis, that is, to the left, and clamps the valve knob 001 below through the clamping groove 511, thereby clamping the valve. After the clamping plate 51 continues to move to the left, it pushes the limiting plate 52 to the left through the push plate 53, and drives the telescopic rod 551 to deflect to the opposite direction. The telescopic rod 551 deflects in the opposite direction and drives the limiting plate 52 to move to the left a longer distance, leaving space for the clamping plate 51 to move downward.

[0107] After the clamping plate 51 moves the valve to the far left, the left side of the valve contacts the alignment bar 42. At this time, the valve remains fixed in the horizontal direction under the combined action of the alignment bar 42 and the clamping groove 511. Figure 9 As shown;

[0108] Then, the card plate 51 is moved down along the Y-axis to place the valve between the movable blocking plate 202 and the fixed blocking plate 201 for an airtightness test.

[0109] This solution enables the automatic correction of the valve position and the transfer of the valve to the test unit 2 for testing without manual operation. The movement trajectory of the clamping plate 51 is simple, and the action can be completed by a simple and inexpensive electric rod or other device. This improves the problem of the relatively complex structure and movement of the robotic arm in the gripping method and reduces the cost of use.

[0110] like Figure 6-9 As shown, the transfer unit 5 further includes:

[0111] A driven plate 56 is provided at the bottom of the limiting plate 52; and

[0112] A lever 57 is rotatably mounted on the card plate 51 to push the driven plate 56. The top of the lever 57 is provided with a ramp corresponding to the driven plate 56. The lever 57 is a unidirectional rotating structure.

[0113] Specifically, after the valve is transferred between the two blocking plates and the blocking plates clamp the valve, the clamping plate 51 moves to the right and is offset from the valve.

[0114] After the airtightness test is completed, the movable plug 202 is reset and separated from the valve, and the valve falls onto the conveyor belt 61 under the action of gravity;

[0115] After completing one valve transfer, the clamping plate 51 needs to be reset. The clamping plate 51 first moves upward along the Y-axis, and then the driven plate 56 is pressed to the right by the push plate 57, thereby driving the limit plate 52 to move to the right and reset. Then, the clamping plate 51 moves to the rightmost end and then moves upward to complete the reset. Through this setting, the function of automatically resetting the limit plate 52 is realized during the reset process of the clamping plate 51. The structure is simple and easy to use.

[0116] like Figure 6-10 As shown, the feeding section 3 further includes:

[0117] The rotating wheel 32 is mounted on the platform 1 and located outside the elastic mesh bag 41;

[0118] Evenly distributed on the rotating wheel 32 are partitions 33 used to separate the valves within the elastic mesh bag 41; and

[0119] Drive mechanism 34 for driving the rotation of the wheel 32.

[0120] Specifically, the rotating wheel 32 is rotatably mounted on the outer bracket 101.

[0121] like Figure 10 As shown, the drive mechanism 34 further includes:

[0122] A driven gear 341 is provided on the rotating wheel 32;

[0123] A rack plate 342 is slidably installed in the platform 1 and engages with the driven gear 341 in one direction. The bottom end of the rack plate 342 abuts against the clamping plate 51, and a support spring 343 is installed on the rack plate 342.

[0124] Specifically, the rack plate 342 is provided with a pawl that meshes with the gear, and the pawl and the driven gear 341 form a unidirectional rotation structure.

[0125] like Figure 10As shown, further, the driven gears 341 are symmetrically distributed on both sides of the elastic cloth 412, and the two driven gears 341 rotate synchronously in opposite directions through the transmission gear 344.

[0126] Specifically, the initial state is as follows: Figure 8 As shown, both the left and right partitions 33 compress the elastic cloth 412, thereby dividing the elastic cloth 412 into upper and lower parts. The valve inside the material cylinder 31 is blocked above the two partitions 33; the rack plate 342 is pushed upward by the clamping plate 51.

[0127] During material feeding, the rotating wheel 32 is started to rotate at a fixed amplitude. The rotating wheel 32 drives the partition 33 to rotate once. The partition 33 pushes the valve at the bottom of the elastic mesh bag 41 to fall down. After the valve falls onto the limit plate 52, it triggers the movement of the clamping plate 51, which transfers the valve to the test unit 2 for airtightness testing. After the clamping plate 51 moves down, the rack plate 342 moves downward under the push of the support spring 343.

[0128] After the clamping plate 51 moves upward and resets, the clamping plate 51 presses the rack plate 342 upward, and the rack plate 342 drives the partition plate 33 to rotate, continuing to release the next valve. In this way, the subsequent feeding work is carried out intermittently and automatically when the work is started, which eliminates the trouble of always needing to electrically control the feeding. The structure is simple and saves the cost of use.

[0129] Example 2

[0130] like Figure 5-6 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows:

[0131] In this embodiment, the material cylinder 31 is movably mounted on the platform 1, and the bottom of the material cylinder 31 is provided with a conduit 311 that is inserted into the elastic mesh bag 41.

[0132] Specifically, this setting allows the barrel 31 to oscillate, reducing the likelihood of valve blockage within the barrel 31.

[0133] Example 3

[0134] like Figure 11 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 3 and Embodiment 1 is as follows:

[0135] In this embodiment, to facilitate the test unit 2 in fixing the valve held by the clamping plate 51, the clamping plate 51 can be improved. The clamping plate 51 includes:

[0136] Fixed support plate 511; and

[0137] Two clamping plates 512 are slidably mounted on the fixed support plate 511, and a return spring is installed on the clamping plate 512.

[0138] Specifically, the push plate 53 is mounted on the fixed support plate 511. In the initial state, the two clamping plates 512 are fixed under the support of the return spring, which can hold the valve in place. During the process of the movable blocking plate 202 moving to clamp the valve, the valve will move upward in the Z-axis. The flexibility of the return spring allows the valve to move smoothly and be assembled between the two blocking plates.

[0139] Work steps

[0140] Step 1: During the airtightness test, start the rotating wheel 32 to rotate, the partition 33 will rotate accordingly, and a valve will be released and moved down;

[0141] Step 2: The valve slowly falls inside the elastic mesh bag 41 and automatically adjusts its position during the fall until its center of gravity is downward.

[0142] Step 3: The valve falls out of the elastic mesh bag 41 and lands on the limiting plate 52, triggering the switch 54, and the clamping plate 51 begins to move;

[0143] Step 4: Move the clamping plate 51 to the left. First, the valve is clamped in the clamping groove 511. Then, the limit plate 52 is pushed to the left by the push plate 53 to make room for the movement of the clamping plate 51.

[0144] Step 5: Move the clamping plate 51 downwards to place the valve between the movable blocking plate 202 and the fixed blocking plate 201;

[0145] Step 6: Move the movable blocking plate 202 to seal both ends of the valve through the movable blocking plate 202 and the fixed blocking plate 201, and conduct an airtightness test;

[0146] Step 7: After the airtightness test is completed, the movable plug 202 moves back to its original position, and the valve that has completed the test falls onto the conveyor belt 61 for transfer.

[0147] Step 8: After the airtightness test is completed, the clamping plate 51 moves upward to reset, and the limiting plate 52 moves back to reset via the lever 57.

[0148] Step 9: During the process of the card plate 51 moving upward and resetting, the rack plate 342 is squeezed upward. The rack plate 342 drives the rotating wheel 32 and the partition plate 33 to rotate through the driven gear 341, releasing the next valve to slide down.

[0149] Step 10: Repeat steps 2 through 9 to perform the automated airtightness test of the valve in a cyclical manner.

[0150] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A valve air tightness testing device for an inflator pump, comprising a platform on which a plurality of testing units for air tightness testing of a valve are provided, characterized in that, Also comprising: a feeding part arranged on the platform for feeding the valve to the test unit, the feeding part comprising a feeding cylinder for placing the valve; a correction part for correcting the position of the valve, the correction part comprising an elastic net bag arranged below the feeding cylinder for sliding transmission of the valve; a transfer part for transferring the corrected valve to the position of the test unit, the transfer part comprising a clamping plate for clamping and transferring the corrected valve; and a transmission part arranged below the test unit for transmitting the valve after completing the air tightness test, the transmission part comprising a transmission belt. The transfer part further comprises: a limiting plate slidingly installed on the platform below the elastic net bag, the clamping plate being provided with a clamping groove for fixing the valve, the spacing between the limiting plate and the elastic net bag matching the height of the clamping groove; a push plate fixedly arranged on the clamping plate for pushing away the limiting plate; and a switch arranged on the limiting plate for controlling the start of the clamping plate. The transfer part further comprises a positioning mechanism for fixing the limiting plate, the positioning mechanism comprising: a telescopic rod obliquely installed between the platform and the limiting plate, the telescopic rod being located outside the elastic net bag; and a compression spring for supporting the telescopic rod. The elastic net bag comprises: a fixed plate fixedly installed on the platform; and an elastic cloth arranged between the fixed plates, the elastic cloth and the fixed plates forming a through channel structure. When the valve is subjected to the air tightness test, the valve is placed in the feeding cylinder, the valve falls into the elastic net bag in sequence through the feeding cylinder, the elastic cloth wraps the valve, the valve slowly slides downward under the action of its own gravity, and adjusts its gravity center position in the sliding process, so that the gravity center is located below, the valve falling from below the elastic net bag is in a fixed posture with the gravity center downward, and the correction function of the valve is completed.

2. The valve air tightness detection device for an inflator pump according to claim 1, wherein the correction part further comprises a correction strip fixedly installed on the platform above the test unit, the width of the correction strip being smaller than the width of the clamping groove, and the correction strip being located below the limiting plate.

3. The valve air tightness detection device for an inflator pump according to claim 1, wherein the transfer part further comprises: a driven plate arranged at the bottom of the limiting plate; and a dial plate rotationally installed on the clamping plate for pushing the driven plate, the top of the dial plate being provided with a slope corresponding to the driven plate, and the dial plate being a one-way rotation structure.

4. The valve air tightness detection device for an inflator pump according to claim 1, wherein the feeding part further comprises: a rotating wheel movably installed on the platform outside the elastic net bag; a partition plate uniformly distributed on the rotating wheel for separating the valves in the elastic net bag; and a driving mechanism for driving the rotating wheel to rotate.

5. The valve air tightness detection device for an inflator pump according to claim 4, wherein the driving mechanism comprises: a driven gear arranged on the rotating wheel. ​ ​ ​ ​ ​ A rack plate is slidably installed in the platform and is in one-way engagement transmission with the driven gear, the bottom end of the rack plate abuts against the clamping plate, and a supporting spring is installed on the rack plate.

6. The valve air tightness detection device for an inflator pump according to claim 5, characterized in that, The driven gears are symmetrically distributed on both sides of the elastic cloth, and the two driven gears are synchronously and reversely rotated through a transmission gear.

7. The valve air tightness detection device for an inflator pump according to claim 1, characterized in that, The cartridge is movably installed on the platform, and a guide pipe is arranged at the bottom of the cartridge and inserted into the elastic mesh bag.

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