Zip-top can air tightness detection device

Abstract

The invention discloses a zip-top can airtightness detection device, and relates to the technical field of zip-top can airtightness detection. A zip-top can airtightness detection device comprises a device body, a pneumatic cylinder and a zip-top can, the pneumatic cylinder is fixedly installed at the top of the device body, the zip-top can is placed in the device body, a bottom supporting and adjusting assembly is arranged in the device body, and an air pressure detection assembly is fixedly installed on the side face of the device body. The bottom of the pneumatic cylinder is movably connected with a top pressing assembly. According to the zip-top can airtightness detection device, the pressure of compressed air filled into a non-gas-containing zip-top can is strictly controlled to be within the range of 1-2 MPa, and by means of an overpressure protection mechanism in a side edge pressing pipe, when the pressure intensity exceeds 2 MPa, it is ensured that a detection sample zip-top can is kept in the original shape at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of air tightness detection of cans, in particular to an air tightness detection device for cans. Background Art

[0002] The immersion observation method for spot-checking the air tightness of open semi-formed cans is simple and efficient, as follows: first, perform an appearance inspection on the spot-checked open semi-formed cans, and remove the cans with obvious deformation or damage. Use special tools to fill the cans with 0.1-0.2MPa compressed air. Then prepare a sink filled with clean water. You can add a small amount of ink for easy observation. The water depth should be able to completely submerge the open semi-formed cans. Then immerse the open semi-formed cans in water, making sure that the can body, rolled edges and all joints are fully submerged. Let it stand for 10-30 seconds, and carefully observe whether there are continuous bubbles in each part. No bubbles or no more than 2 sporadic bubbles within 3 seconds are qualified; continuous bubbling in a certain part (such as more than 1 bubble per second at the rolled edge) is considered a leak. Finally, take out the qualified cans and wipe them dry, and mark and isolate the unqualified cans. This method takes about 1 minute to detect a single can, which is suitable for random sampling or preliminary screening of the production line.

[0003] When the above-mentioned air pressure control is used to fill non-gas-containing tanks with compressed air, the pressure must be strictly controlled within the range of 0.1-0.2MPa. Overpressure > 0.25MPa may cause the tank body to bulge, the curling edge to crack, or even the tank body to burst, resulting in sample failure and safety risks. The deformed tank body cannot represent the normal sealing performance of the product. After the test, the tank body must be gently wiped with a clean soft cloth immediately to remove surface moisture and fully air-dry. Excessive wiping force will cause slight deformation of the tank body and affect the appearance. Residual moisture, especially in iron cans, can easily cause rust in weak parts such as curling edges, destroying the structural integrity and resulting in the inability of qualified samples to circulate normally. Summary of the Invention

[0004] The object of the present invention is to provide an airtightness detection device for cans. By setting a pressure relief mechanism, the interior can be automatically opened when the pressure is greater than 0.2 MPa. At this time, the gas can be exhausted and quickly balanced to the original state. By setting a separate pipe and a sealed space, the can can be prevented from being submerged in water, thereby facilitating detection and solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air tightness detection device for cans, comprising a device body, a pneumatic cylinder and a can, wherein the pneumatic cylinder is fixedly installed on the top of the device body, the can is placed inside the device body, a bottom support adjustment component is provided inside the device body, an air pressure detection component is fixedly installed on the side of the device body, and the bottom of the pneumatic cylinder is movably connected to a top pressing component; the interior of the bottom support adjustment component includes a support adjustment groove, a main support block and an auxiliary support column, and the interior of the device body is provided with two symmetrical support adjustment grooves, the two symmetrical support adjustment grooves The main support block is movably connected between the support adjustment grooves, and the auxiliary support column is movably connected inside the support adjustment groove; the interior of the air pressure detection component includes an air pressure detection tube and a transparent tube, the side of the device body is fixedly installed with an air pressure detection tube, and the top of the air pressure detection tube is fixedly installed with a transparent tube; the interior of the top pressing assembly includes a top pressing plate and a side pressing tube, the bottom of the pneumatic cylinder passes through the top of the device body and is movably connected with the top pressing plate, and two symmetrical side pressing tubes are fixedly installed on the bottom of the top pressing plate, and the bottom middle section of the top pressing plate is fixedly connected to the top of the main support block.

[0006] Preferably, the bottom of the main support block is movably sleeved with an intermediate adjustment block, the bottom of the intermediate adjustment block is movably sleeved with a bottom support seat, and both sides of the top of the intermediate adjustment block are fixedly connected with linkage rods, and the linkage rod extends into the interior of the support adjustment groove at one end away from the intermediate adjustment block and is fixedly connected to the bottom of the auxiliary support column.

[0007] Preferably, a limiting plate is fixedly installed on the bottom of the main support block, the outer wall of the limiting plate is movably connected to the interior of the intermediate adjustment block, a spring limiting sleeve is fixedly installed on the bottom of the inner cavity of the intermediate adjustment block, and a buffer spring is movably connected to the outer wall of the spring limiting sleeve, wherein the bottom of the intermediate adjustment block is also fixedly installed with a limiting plate and is movably connected to the top of the bottom support seat.

[0008] Preferably, a sealing detection chamber is fixedly installed inside the support adjustment groove, and a chamber side seam is provided between the sealing detection chamber and the support adjustment groove, and ventilation holes are provided through the bottom of the sealing detection chamber and the support adjustment groove, and movable sealing grooves are provided on both sides of the bottom of the inner cavity of the sealing detection chamber, and the inner movability of the movable sealing groove is connected with a connecting push rod, and the bottom of the connecting push rod is fixedly installed with a sealing piston, and the bottom of the sealing piston is movably connected with a side sealing cylinder, and a sealing adjustment tube is fixedly installed on one side of the bottom of the side sealing cylinder, and the top inner cavity of the sealing adjustment tube is movably connected with an adjustment plug, and the outer wall of the adjustment plug is fixedly connected with an extension rod, and the top of the sealing adjustment tube is fixedly connected with a raised adjustment seat side groove, and the adjustment seat side grooves are located at both ends of the sealing detection chamber, and the extension rod extends to the inside of the adjustment seat side groove and is fixedly connected to a linkage clamp at one end away from the sealing adjustment tube.

[0009] Preferably, the end of the air pressure detection tube away from the transparent tube passes through the sealed detection cavity and the auxiliary support column, and the end close to the sealed detection cavity is fitted with a piston linkage block, the interior of the air pressure detection tube is fixedly installed with a limiting horizontal plate, the interior of the limiting horizontal plate is movably sleeved with a sensor rod, one end of the sensor rod is fixedly connected to the piston linkage block, the end of the sensor rod away from the piston linkage block is fixedly connected to a transmission rod, the outer wall of the transmission rod is movably sleeved with a transmission spring, the end of the transmission rod away from the sensor rod is fixedly connected to an extrusion contact, the bottom of the piston linkage block is fixedly connected to a contact linkage rod, the bottom of the contact linkage rod is fixedly connected to the top of the linkage clamping block, the interior of the transparent tube is filled with detection liquid, and the outlet of the end of the air pressure detection tube away from the auxiliary support column is located inside the limiting horizontal plate.

[0010] Preferably, the top pressing assembly also includes a pressing buffer block, an adjusting spring, a side adjusting plate, an adjusting original plate, a driving connecting column, a center guide rod and a pressure adjusting disk, the side pressure tube is fixedly installed with a pressing buffer block, the bottom of the pressing buffer block is fitly connected to the adjusting spring, both ends of the adjusting spring are fixedly connected to the side adjusting plates, the side adjusting plate is fitly connected to the adjusting original plate at one end away from the pressing buffer block, the top of the top pressing plate is fixedly connected to the driving connecting column, the top of the driving connecting column is movably socketed with the inside of the pneumatic cylinder, the inside of the adjusting original plate is fixedly installed with a center guide rod, the end of the center guide rod away from the adjusting original plate is fixedly connected to the pressure adjusting disk, both ends of the pressure adjusting disk are provided with adjusting disk side holes, and the adjusting spring, the pressing buffer block and the side adjusting plates are all movably socketed with the outer wall of the center guide rod.

[0011] Preferably, the inside of the pressing buffer block comprises a buffer bottom groove, a bottom top block, a side limiting groove and a side guide groove, the bottom of the pressing buffer block is provided with a buffer bottom groove, the inside of the buffer bottom groove is movably sleeved with a bottom top block on both sides, and the inside of the pressing buffer block is provided with symmetrical side limiting grooves and side guide grooves on both sides.

[0012] Preferably, the top of the bottom top block is fixedly installed with a top block driving column, the outer wall of the top block driving column is movably sleeved with a driving column sleeve, the top of the driving column sleeve is fixedly connected with the inside of the pressing buffer block, the inner cavity of the driving column sleeve is fixedly installed with a reset spring rod at the top, the outer wall of the reset spring rod is movably sleeved with a spring rod, the bottom of the spring rod and the top of the top block driving column are mutually attached, the inside of the top block driving column and the outer wall of the reset spring rod are movably sleeved, the top of the driving column sleeve is fixedly installed with a side edge adjusting pipe on one side, the inside of the side edge adjusting pipe is movably sleeved with an adjusting rod, the outer wall of the adjusting rod is fixedly connected with a driving block, the end of the driving block away from the adjusting rod is fixedly connected with a stable sliding block, the bottom of the driving column sleeve is fixedly installed with a side locking pipe on one side, the inside of the side locking pipe is movably sleeved with a locking pin plug, the outer wall of the locking pin plug is fixedly connected with a pin plug linkage rod, and the inside of the end of the pin plug linkage rod away from the locking pin plug is movably connected with a bead.

[0013] Preferably, the bottom pressure of the pressure adjusting disc is greater than zero point two megapascals and is lifted up, and the bottom pressure of the pressure adjusting disc is less than zero point two megapascals and is shrunk to be attached to the top of the top pressing plate.

[0014] Preferably, the top and the bottom of the top block driving column are filled with air, and the bottom forms suction when the top block driving column moves upward, and the top forms suction when the top block driving column moves downward.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1. The easy-open can airtightness detection device strictly controls the pressure of the compressed air filled into the non-gas-containing can body easy-open can to be within the range of zero point one to zero point two megapascals, and relies on the overpressure protection mechanism in the side edge pressing pipe to lift up the pressure adjusting disc and drive the center guide rod to adjust the original plate to release pressure when the pressure exceeds zero point two megapascals, which can effectively prevent the can body from bulging, edge cracking or bursting, not only reduces the safety risk caused by damage to the can body easy-open can, but also prevents the parts in direct contact with the can body, such as the top pressing plate of the side edge pressing pipe, from being damaged due to abnormal extrusion caused by deformation of the can body; at the same time, the detection sample easy-open can remains in the original form, avoiding the influence of deformation on the judgment of the sealing performance of normal products, and ensuring the accuracy of the detection results relying on the output of the detection components such as the air pressure detection tube transparent cylinder.

[0017] 2. This type of can air tightness detection device directly detects air tightness through changes in gas pressure. There is no need to put the can into water or wipe it after detection. On the one hand, it avoids the problem of rust on weak parts such as curling caused by the contact between moisture and the can, ensures the structural integrity of the can, and enables qualified samples to fully represent the sealing performance and circulation status of normal products; on the other hand, it reduces the chance of moisture contacting device parts such as the support adjustment groove and auxiliary support column side pressure tube, reduces the risk of parts being damaged by rust, and extends the service life of the device. At the same time, it eliminates the steps of wiping and air drying, simplifies the detection process, and improves detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall structure of the internal structure of the device of the present invention;

[0020] Figure 3 This is a schematic structural diagram of the entire cross-section of the intermediate adjustment block of the present invention;

[0021] Figure 4 For the present invention Figure 3 A schematic diagram of the overall enlarged structure;

[0022] Figure 5 Schematic diagram of the internal cross-section of the support adjustment groove in the present invention;

[0023] Figure 6 Schematic diagram of the cross-sectional structure of the air pressure detection tube in the present invention;

[0024] Figure 7 This is a schematic diagram of the overall internal structure of the transparent tube in the present invention;

[0025] Figure 8 This is a schematic diagram of the overall structure of the top pressing assembly in the present invention;

[0026] Figure 9 This is a schematic diagram of the overall structure of the bottom of the press-fit buffer block in the present invention;

[0027] Figure 10 Schematic diagram of the overall internal structure of the driving column sleeve in the present invention.

[0028] In the figure: 1. Device body; 2. Pneumatic cylinder; 3. Bottom support adjustment assembly; 31. Support adjustment slot; 32. Main support block; 33. Auxiliary support column; 35. Intermediate adjustment block; 36. Bottom support seat; 37. Linkage rod; 38. Limit plate; 39. Spring limit sleeve; 310. Buffer spring; 4. Air pressure detection assembly; 41. Air pressure detection tube; 42. Transparent tube; 43. Limiting horizontal plate; 44. Transmission rod; 45. Transmission spring; 46. Extrusion contact; 47. Sensing rod; 48. Piston linkage block; 49. Contact linkage rod; 410. Detection liquid; 5. Top pressing assembly; 51. Top pressing plate; 52. Side pressing tube; 53. Pressing buffer block; 54. Adjustment spring; 55. Side adjustment plate; 56. Adjustment original plate; 57. Drive connecting column; 58. : Center guide rod; 59, pressure regulating plate; 510, regulating plate side hole; 6, can; 7, buffer bottom groove; 71, bottom top block; 72, side limit groove; 73, side guide groove; 74, driving column sleeve; 75, top block driving column; 76, reset spring rod; 77, spring rod; 78, side adjustment tube; 79, adjustment rod; 710, driving block; 711, stabilizing slider; 712, side locking tube; 714, locking pin plug; 715, pin plug linkage rod; 713, ball bearing; 8, sealing detection chamber; 81, chamber side seam; 82, vent hole; 83, movable sealing groove; 84, connecting push rod; 85, sealing piston; 86, side sealing cylinder; 87, sealing adjustment tube; 88, adjustment plug; 89, extension rod; 810, adjustment seat side groove; 811, linkage clamping block. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1-10 The present invention provides a technical solution for an air tightness detection device for cans: an air tightness detection device for cans, comprising a device body 1, a pneumatic cylinder 2, and a can 6. The pneumatic cylinder 2 is fixedly mounted on the top of the device body 1, the can 6 is placed inside the device body 1, a bottom support adjustment component 3 is provided inside the device body 1, an air pressure detection component 4 is fixedly mounted on the side of the device body 1, and a top pressing component 5 is movably connected to the bottom of the pneumatic cylinder 2;

[0031] The interior of the bottom support adjustment assembly 3 includes a support adjustment slot 31, a main support block 32 and an auxiliary support column 33. Two symmetrical support adjustment slots 31 are provided inside the device body 1. The main support block 32 is movably connected between the two symmetrical support adjustment slots 31, and the auxiliary support column 33 is movably connected inside the support adjustment slots 31.

[0032] The interior of the air pressure detection assembly 4 includes an air pressure detection tube 41 and a transparent tube 42. The air pressure detection tube 41 is fixedly installed on the side of the device body 1, and the transparent tube 42 is fixedly installed on the top of the air pressure detection tube 41;

[0033] The interior of the top pressing assembly 5 includes a top pressing plate 51 and a side pressing tube 52. The bottom of the pneumatic cylinder 2 passes through the top of the device body 1 and is movably connected to the top pressing plate 51. Two symmetrical side pressing tubes 52 are fixedly installed on the bottom of the top pressing plate 51. The bottom middle section of the top pressing plate 51 is fixedly connected to the top of the main support block 32.

[0034] During operation, the can 6 can be placed on the top of the auxiliary support column 33 that is movably sleeved inside the support adjustment groove 31. At this time, the pneumatic cylinder 2 is started, and the pneumatic cylinder 2 will push the top pressing plate 51 to move downward. During the movement, the top pressing plate 51 can drive the main support block 32 to retract toward the inside of the device body 1. When the main support block 32 retracts toward the inside of the device body 1, the auxiliary support column 33 that is movably sleeved inside the support adjustment groove 31 will be driven downward by the main support block 32. Since the can 6 and the support adjustment groove 31 are both open, when the top pressing plate 51 and the support adjustment groove 31 are fitted together, the opening of the support adjustment groove 31 is sealed by the top pressing plate 51, and air is stored inside it. The can 6 is inside the support adjustment groove 31. Although it is open, it has been retracted into the support adjustment groove 31 as a whole and is in the air formed by the support adjustment groove 31. In the closed space, there is also air inside the can 6, so that the whole can 6 can be retracted into the interior of the support adjustment groove 31. At the same time, the top pressing plate 51 can cover the top of the support adjustment groove 31 to form a seal, and the side pressure tube 52 fixedly installed at the bottom will extend into the can 6 placed inside the support adjustment groove 31, squeezing the gas stored inside the can 6 to increase its pressure. When there is a gap inside the can 6, the gas will be discharged through the gap. At this time, the density of the gas stored inside the support adjustment groove 31 will increase and be transported into the interior of the transparent tube 42 through the air pressure detection tube 41, thereby realizing detection. It should be noted that when there is no gap inside the can 6, if the pressure of the gas exceeds 0.2 MPa during the squeezing process, it can be discharged through the side pressure tube 52 to avoid deformation caused by excessive gas pressure inside the can 6.

[0035] See also Figure 2-4The bottom of the main support block 32 is movably connected to the intermediate adjustment block 35, and the bottom of the intermediate adjustment block 35 is movably connected to the bottom support seat 36. Both sides of the top of the intermediate adjustment block 35 are fixedly connected to the linkage rod 37. The end of the linkage rod 37 away from the intermediate adjustment block 35 extends into the interior of the support adjustment groove 31 and is fixedly connected to the bottom of the auxiliary support column 33.

[0036] A limit plate 38 is fixedly mounted on the bottom of the main support block 32. The outer wall of the limit plate 38 is movably connected to the interior of the intermediate adjustment block 35. A spring limit sleeve 39 is fixedly mounted on the bottom of the inner cavity of the intermediate adjustment block 35. A buffer spring 310 is movably connected to the outer wall of the spring limit sleeve 39. The limit plate 38 is also fixedly mounted on the bottom of the intermediate adjustment block 35 and is movably connected to the top of the bottom support seat 36.

[0037] When the top pressing plate 51 moves downward, the main support block 32 fixedly connected at the bottom will push the middle adjustment block 35 to retract into the inside of the bottom support seat 36. During the retraction process, the linkage rods 37 fixedly connected on both sides of the middle adjustment block 35 will also move downward, which allows the auxiliary support column 33 fixedly connected at the top of the linkage rod 37 to move downward along the inside of the support adjustment groove 31. When the auxiliary support column 33 moves downward, the can 6 placed on the top can follow the auxiliary support column 33 to move downward, thereby retracting and being placed inside the support adjustment groove 31. When the middle adjustment block 35 and the bottom of the inner cavity of the bottom support seat 36 contact each other, the linkage rod 37 as a whole will no longer pull the auxiliary support column 33 to move downward. It should be noted that the spring limit sleeve 39 is fixedly installed inside the middle adjustment block 35, and the outer wall of the spring limit sleeve 39 is movably sleeved with the buffer spring 3 When the upper and lower frames are pressed downward, the upper and lower frames are pressed downward, so that the upper and lower frames can be tightened and the lower frames can be tightened. When the upper and lower frames are pressed downward, the upper and lower frames are tightened and the lower frames are tightened. When the upper and lower frames are pressed downward, the upper and lower frames are tightened and the lower frames are tightened.

[0038] See also Figure 5-6Based on the above embodiment, when the can 6 is retracted into the support adjustment groove 31, there is no clamping mechanism, which makes the can 6 easily shake slightly, resulting in position deviation. When the side pressure tube 52 extends into the support adjustment groove 31, it cannot be aligned with the top of the can 6, which easily causes the outer wall of the can 6 to be squeezed and deformed. Therefore, in order to solve the above problem,

[0039] A sealed detection chamber 8 is fixedly installed inside the support adjustment groove 31, and a chamber side seam 81 is opened between the sealed detection chamber 8 and the support adjustment groove 31. Ventilation holes 82 are opened through the bottom of the sealed detection chamber 8 and the support adjustment groove 31. Movable sealing grooves 83 are opened on both sides of the bottom of the inner cavity of the sealed detection chamber 8. A connecting push rod 84 is movably sleeved inside the movable sealing groove 83. A sealing piston 85 is fixedly installed at the bottom of the connecting push rod 84. A side sealing cylinder 86 is movably sleeved at the bottom of the sealing piston 85. A sealing adjustment tube 87 is fixedly installed on one side of the bottom of the side sealing cylinder 86. An adjusting plug 88 is movably sleeved on the top inner cavity of the sealing adjustment tube 87. An extension rod 89 is fixedly connected to the outer wall of the adjusting plug 88. A raised adjusting seat side groove 810 is fixedly connected to the top of the sealing adjustment tube 87. The adjusting seat side grooves 810 are located at both ends of the sealed detection chamber 8. The extension rod 89 extends to the inside of the adjusting seat side groove 810 and is fixedly connected to a linkage clamping block 811 at one end away from the sealing adjustment tube 87.

[0040] When the linkage rod 37 drives the auxiliary support column 33 to move to the bottom of the sealing detection chamber 8, the bottom of the auxiliary support column 33 will contact the top of the connecting push rod 84; in the process of contacting the connecting push rod 84, the connecting push rod 84 will be subjected to a downward thrust, causing the sealing piston 85 fixedly connected to the bottom of the connecting push rod 84 to move downward along the top of the side sealing cylinder 86, and in the process of downward movement, it will squeeze the air stored in the side sealing cylinder 86. At this time, the gas stored in the side sealing cylinder 86 will be transported to the inside of the sealing adjustment tube 87; when the gas enters the inside of the sealing adjustment tube 87, it can push the adjustment plug 88 forward. At this time, the extension rod 89 fixedly connected to the outer wall of the adjustment plug 88 can extend the linkage clamping block 811 that is movably sleeved inside the side groove 810 of the adjustment seat; when the linkage clamping block 811 extends out, it will contact the offset can 6 and push it to move toward the middle section. When the linkage clamping blocks 811 at both ends contact the can body, they can form a clamp and perform calibration, which is convenient for squeezing the gas stored in the can 6.

[0041] See also Figure 6-7, the end of the air pressure detection tube 41 away from the transparent cylinder 42 penetrates the sealed detection cavity 8 and the auxiliary support column 33, and the end close to the sealed detection cavity 8 is connected with the piston linkage block 48 in a fit manner, the inside of the air pressure detection tube 41 is fixedly installed with the limiting transverse plate 43, the inside of the limiting transverse plate 43 movably sleeves the sensing rod 47, one end of the sensing rod 47 is fixedly connected with the piston linkage block 48, the end of the sensing rod 47 away from the piston linkage block 48 is fixedly connected with the transmission rod 44, the outer wall of the transmission rod 44 movably sleeves the transmission spring 45, the end of the transmission rod 44 away from the sensing rod 47 is fixedly connected with the extrusion contact 46, the bottom of the piston linkage block 48 is fixedly connected with the contact linkage rod 49, the bottom of the contact linkage rod 49 and the top of the linkage clamp block 811 are fixedly connected, the inside of the transparent cylinder 42 is filled with the detection liquid 410, and the outlet of the end of the air pressure detection tube 41 away from the auxiliary support column 33 is located in the inside of the limiting transverse plate 43,

[0042] When the above linkage clamp block 811 extends out from the inside of the adjusting seat side groove 810, the top fixedly connected contact linkage rod 49 drives the piston linkage block 48 to move forward, in the process of the piston linkage block 48 moving forward, the outer wall fixedly connected sensing rod 47 drives the transmission rod 44 to extend out from the inside of the air pressure detection tube 41, in the process of extending, the extrusion contact 46 fixedly connected with the outer wall of the transmission rod 44 extrudes the transmission spring 45 movably sleeved with the outer wall of the transmission rod 44, so that the transmission spring 45 can preliminarily store force, and the inside of the air pressure detection tube 41 is also opened at the same time; when the gas density in the internal space increases during the test, the gas directly enters the inside of the air pressure detection tube 41, and then is transported into the detection liquid 410 stored in the inside of the transparent cylinder 42 through the air pressure detection tube 41, so that the bubbles are generated in the inside of the detection liquid 410, thereby facilitating detection, when the detection is completed, the air cylinder 2 can be started to make the top pressing plate 51 move upward, at this time, the main support block 32 fixedly connected with the bottom of the top pressing plate 51, the middle adjusting block 35 and the bottom support seat 36 are restored in turn, and the auxiliary support column 33 fixedly connected with the top of the linkage rod 37 is also pushed upward, so that the extrusion of the connecting push rod 84 disappears, and thus the transmission spring 45 movably sleeved with the outer wall of the transmission rod 44 is reset; in the process of the transmission spring 45 resetting, the transmission rod 44, the sensing rod 47 and the piston linkage block 48 are pulled back to the original place, and the contact linkage rod 49 fixedly connected with the bottom of the piston linkage block 48 also moves, so that the linkage clamp block 811 fixedly connected with the bottom is pushed back to the original position, thereby canceling the limiting, so that the easy-open can 6 can be separated from the inside of the support adjusting groove 31, and is convenient to take out for the next sampling detection.

[0043] Please refer to Figure 8-10The top pressing assembly 5 also includes a pressing buffer block 53, an adjusting spring 54, a side adjusting plate 55, an adjusting original plate 56, a driving connecting column 57, a center guide rod 58 and a pressure adjusting disk 59. The pressing buffer block 53 is fixedly installed inside the side pressing tube 52. The bottom of the pressing buffer block 53 is closely connected to the adjusting spring 54. Both ends of the adjusting spring 54 are fixedly connected to the side adjusting plate 55. The end of the side adjusting plate 55 away from the pressing buffer block 53 is closely connected to the adjusting original plate 56. The top of the top pressing plate 51 is fixedly connected with a driving connecting column 57, and the top of the driving connecting column 57 is movably connected to the inside of the pneumatic cylinder 2. A central guide rod 58 is fixedly installed inside the adjusting original plate 56. The end of the central guide rod 58 away from the adjusting original plate 56 is fixedly connected to a pressure adjusting disk 59. Both ends of the pressure adjusting disk 59 are provided with adjusting disk side holes 510, and the adjusting spring 54, the pressing buffer block 53 and the side adjusting plate 55 are all movably connected to the outer wall of the central guide rod 58.

[0044] The interior of the press-fit buffer block 53 includes a buffer bottom groove 7, a bottom top block 71, a side limit groove 72, and a side guide groove 73. The bottom of the press-fit buffer block 53 is provided with a buffer bottom groove 7, and the bottom top blocks 71 are movably sleeved inside the two sides of the buffer bottom groove 7. The interior of the press-fit buffer block 53 is provided with symmetrical side limit grooves 72 and side guide grooves 73 on both sides.

[0045] The top of the bottom top block 71 is fixedly installed with a top block driving column 75, and the outer wall of the top block driving column 75 is movably connected with a driving column sleeve 74. The top of the driving column sleeve 74 is fixedly connected to the inside of the pressing buffer block 53, and the top of the inner cavity of the driving column sleeve 74 is fixedly installed with a return spring rod 76, and the outer wall of the return spring rod 76 is movably connected with a spring rod 77. The bottom of the spring rod 77 and the top of the top block driving column 75 fit together, and the inside of the top block driving column 75 and the outer wall of the return spring rod 76 are movably connected. The top side of the driving column sleeve 74 is fixedly installed with a side The side adjustment tube 78 has an adjustment rod 79 movably sleeved inside the side adjustment tube 78, a driving block 710 is fixedly connected to the outer wall of the adjustment rod 79, and a stabilizing slider 711 is fixedly connected to the end of the driving block 710 away from the adjustment rod 79. A side locking tube 712 is fixedly installed on one side of the bottom of the driving column sleeve 74, and a locking pin plug 714 is movably sleeved inside the side locking tube 712. The outer wall of the locking pin plug 714 is fixedly connected to a pin plug linkage rod 715, and a ball 713 is movably connected to the inner side of the pin plug linkage rod 715 away from the locking pin plug 714.

[0046] The bottom of the side pressing pipe 52 is detachably mounted with a pressing plug, and a circular hole is formed in the middle of the pressing plug, which is in communication with the inside of the side pressing pipe 52. When the pneumatic cylinder 2 works, it will drive the driving connecting column 57 to extend downward. In this process, the top pressing plate 51 fixedly connected at the bottom of the driving connecting column 57 will drive the side pressing pipe 52 and the pressing plug to extend into the inside of the pop can 6. At this time, the gas stored in the pop can 6 will be pressed, and the internal pressure will increase. The increased gas pressure will be transported to the inside of the side pressing pipe 52 through the circular hole, and then the gas will contact the bottom of the pressure adjusting disc 59 through the pressing buffer block 53. When the gas pressure exceeds 0.25 MPa, the pressure adjusting disc 59 will be lifted to achieve timely pressure relief and prevent the pop can 6 from deforming due to bearing excessive pressure during work;

[0047] During the process of lifting the pressure adjusting disc 59, the center guide rod 58 fixedly connected at the bottom of the pressure adjusting disc 59 will extend out of the inside of the side pressing pipe 52, so that the adjusting original plate 56 fixedly connected at the bottom of the center guide rod 58 will move upward in the inside of the side pressing pipe 52. When moving upward, the adjusting original plate 56 will adhere to the side adjusting plate 55 and press the adjusting spring 54 movably sleeved on the outer wall of the center guide rod 58, causing the adjusting spring 54 to preliminarily deform. When the internal gas pressure is less than 0.25 MPa, the adjusting spring 54 will reset and push the adjusting original plate 56 back to the original position, so that the center guide rod 58 and the pressure adjusting disc 59 fixedly connected to the adjusting original plate 56 are pulled back to the original position, and the pressure adjusting disc 59 is adhered to the top of the top pressing plate 51 to form a seal, avoiding continuous gas leakage.

[0048] When the above-mentioned adjusting spring 54 is pressed, the side adjusting plate 55 close to the pressing buffer block 53 will extend into the inside of the buffer bottom groove 7 and press the bottom top block 71 movably sleeved in the inside of the buffer bottom groove 7. After the bottom top block 71 is pressed, the top block driving column 75 fixedly connected at the top of the bottom top block 71 will move upward along the outer wall of the reset spring rod 76, and at the same time, the spring rod 77 movably sleeved on the outer wall of the reset spring rod 76 will be pressed. It should be noted that the top and bottom of the top block driving column 75 are filled with air, and a sealing mechanism can be added at the connection between the bottom top block 71 and the driving column sleeve 74, which can be made of rubber. During the upward movement of the top block driving column 75, the air filled in the top of the top block driving column 75 will be pressed and transported to the inside of the side adjusting pipe 78 and continuously stored. As the gas density increases, the adjusting rod 79 will extend out of the inside of the side adjusting pipe 78, and the driving block 710 and the stable sliding block 711 fixedly connected to the outer wall of the adjusting rod 79 will extend out of the inside of the side limiting groove 72. The outer wall of the stable sliding block 711 can be clamped in the inside of the adjusting disc side hole 510.

[0049] At the same time, when the top block drive column 75 moves upward, the bottom of the column will form a suction force, which will suck the gas stored in the side locking tube 712 into the drive column sleeve 74. The negative pressure generated will cause the locking pin plug 714 to move towards the end of the drive column sleeve 74, causing the pin plug linkage rod 715 fixedly connected to the outer wall of the plug to retract into the inside of the side locking tube 712, and then causing the pearl 713 movably sleeved on the outer wall of the pin plug linkage rod 715 to retract into the inside of the side limiting groove 72, so that it no longer contacts the center guide rod 58. In addition, after the above-mentioned adjusting disc side hole 510 is clamped with the stable sliding block 711, it can provide stable force during the upward extension of the center guide rod 58, avoiding the shaking of the center guide rod 58 during upward movement, preventing uneven extrusion of the adjusting spring 54 by the adjusting original plate 56, and shortening the service life of the adjusting spring 54.

[0050] When the adjusting spring 54 resets, the extrusion force of the bottom top block 71 decreases, and the spring rod 77 movably sleeved on the outer wall of the reset spring rod 76 will reset, driving the top block drive column 75 to move downward. When the top block drive column 75 moves downward, it will extrude the gas filled in its bottom, causing it to be transported to the inside of the side locking tube 712 and continuously stored. This will cause the locking pin plug 714 to extend outward from the inside of the side locking tube 712, and the pearl 713 movably installed in the inside of the pin plug linkage rod 715 fixedly connected to the locking pin plug 714 will extend out from the inside of the side guide groove 73 and frictionally connect with the outer wall of the center guide rod 58, thereby reducing the friction and allowing the pressure adjusting disc 59 and other components to reset quickly and adhere to the top of the top pressing plate 51, forming a seal and avoiding continuous gas leakage.

[0051] Working principle: in use,

[0052] First step: device closure and gas sealing

[0053] Place the pop can 6 on the top of the auxiliary support column 33 movably sleeved in the support adjusting groove 31, and start the pneumatic cylinder 2. The pneumatic cylinder 2 drives the top pressing plate 51 to move downward, driving the main support block 32 to retract into the device main body 1, and then driving the auxiliary support column 33 in the support adjusting groove 31 to move downward, so that the pop can 6 retracts into the inside of the support adjusting groove 31 with the auxiliary support column 33. At this time, the top pressing plate 51 covers the top of the support adjusting groove 31 to form a seal, and the side edge pressure tube 52 at the bottom of the top pressing plate 51 extends into the pop can 6. The support adjusting groove 31 and the inside of the pop can 6 store air, providing a closed environment for subsequent detection.

[0054] Second step: air tightness detection and abnormal exhaust

[0055] The side pressing pipe 52 presses the gas in the can 6 to increase the pressure, if the can 6 has a gap, the gas is discharged through the gap, so that the gas density in the supporting adjusting groove 31 is increased, and the gas is transported to the transparent cylinder 42 through the air pressure detection pipe 41, and the air tightness detection is realized through the bubbles generated by the detection liquid 410 in the transparent cylinder 42, at the same time, the sealing detection cavity 8 in the auxiliary supporting column 33 is triggered under the driving of the linkage rod 37, the linkage clamping block 811 clamps and calibrates the can 6, so that the side pressing pipe 52 is prevented from deviating and pressing the outer wall of the can 6; the related parts of the gas pressure detection assembly 4 are linked during detection, so that the gas is smoothly transported to the transparent cylinder 42, and after the detection is completed, the parts are reset, and the can 6 is convenient to take out.

[0056] Third step: overpressure protection and part reset

[0057] When the gas pressure in the can 6 exceeds 0.2 MPa, the gas enters the side pressing pipe 52 through the round hole of the bottom pressing plug, lifts the pressure adjusting disc 59 to realize pressure relief, and prevents the can 6 from deforming; when the pressure is lower than 0.2 MPa, the adjusting spring 54 is reset to drive the adjusting original plate 56, the center guide rod 58 and the pressure adjusting disc 59 to return to the original position, and the pressure adjusting disc 59 is attached to the top of the top pressing plate 51 to form a seal; during the process, the adjusting spring 54 presses the bottom top block 71 to trigger a series of linkages in the buffer bottom groove 7, the sliding block 711 is stably connected with the adjusting disc side hole 510 to stably connect the center guide rod 58, so that the service life of the adjusting spring 54 is prevented from being shortened due to uneven pressing; after pressure relief, the internal parts of the buffer bottom groove 7 are reset, the walking bead 713 is rubbed with the center guide rod 58 to reduce the resistance, so that the pressure adjusting disc 59 and the like are quickly sealed to prevent continuous leakage of the gas.

[0058] The standard parts used in the application can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional types in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here. The contents not described in detail in the specification belong to the prior art known by the person skilled in the art.

[0059] The application and the embodiments thereof are described above, and the description is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the purpose of the application, without creative design, similar structure modes and embodiments of the technical solutions are not creative, which should belong to the protection scope of the application.

Claims

1. A can airtightness detection device, comprising a device body (1), a pneumatic cylinder (2) and a can (6), wherein the pneumatic cylinder (2) is fixedly mounted on the top of the device body (1), and the can (6) is placed inside the device body (1), characterized in that: A bottom support adjustment component (3) is provided inside the device body (1), an air pressure detection component (4) is fixedly installed on the side of the device body (1), and a top pressing component (5) is movably connected to the bottom of the pneumatic cylinder (2); The interior of the bottom support adjustment component (3) comprises a support adjustment slot (31), a main support block (32) and an auxiliary support column (33); the interior of the device body (1) is provided with two symmetrical support adjustment slots (31); the main support block (32) is movably sleeved between the two symmetrical support adjustment slots (31); and the interior of the support adjustment slot (31) is movably sleeved with an auxiliary support column (33); The interior of the air pressure detection assembly (4) includes an air pressure detection tube (41) and a transparent tube (42); the air pressure detection tube (41) is fixedly mounted on the side of the device body (1); and the transparent tube (42) is fixedly mounted on the top of the air pressure detection tube (41); The interior of the top pressing assembly (5) includes a top pressing plate (51) and a side pressing tube (52); the bottom of the pneumatic cylinder (2) passes through the top of the device body (1) and is movably connected to the top pressing plate (51); two symmetrical side pressing tubes (52) are fixedly installed on the bottom of the top pressing plate (51); the bottom middle section of the top pressing plate (51) is fixedly connected to the top of the main support block (32).

2. The air tightness detection device for cans according to claim 1, characterized in that: The bottom of the main support block (32) is movably sleeved with an intermediate adjustment block (35), and the bottom of the intermediate adjustment block (35) is movably sleeved with a bottom support seat (36). Both sides of the top of the intermediate adjustment block (35) are fixedly connected with linkage rods (37). One end of the linkage rod (37) away from the intermediate adjustment block (35) extends into the interior of the support adjustment groove (31) and is fixedly connected to the bottom of the auxiliary support column (33).

3. The air tightness detection device for cans according to claim 2, characterized in that: A limiting plate (38) is fixedly mounted on the bottom of the main support block (32), and an outer wall of the limiting plate (38) is movably sleeved with the interior of the intermediate adjustment block (35). A spring limiting sleeve rod (39) is fixedly mounted on the bottom of the inner cavity of the intermediate adjustment block (35), and a buffer spring (310) is movably sleeved on the outer wall of the spring limiting sleeve rod (39). The bottom of the intermediate adjustment block (35) is also fixedly mounted with the limiting plate (38) and movably sleeved with the top of the bottom support seat (36).

4. The airtightness detection device for cans according to claim 1, characterized in that: A sealed detection chamber (8) is fixedly installed inside the support adjustment groove (31), and a chamber side seam (81) is provided between the sealed detection chamber (8) and the support adjustment groove (31). The bottoms of the sealed detection chamber (8) and the support adjustment groove (31) are provided with vent holes (82) running through them. Both sides of the bottom of the inner cavity of the sealed detection chamber (8) are provided with movable sealing grooves (83). A connecting push rod (84) is movably sleeved inside the movable sealing groove (83). A sealing piston (85) is fixedly installed at the bottom of the connecting push rod (84), and a side sealing piston (85) is movably sleeved at the bottom of the sealing piston (85). A sealing cylinder (86), a sealing adjustment tube (87) is fixedly installed on one side of the bottom of the side sealing cylinder (86), an adjustment plug (88) is movably sleeved on the top inner cavity of the sealing adjustment tube (87), an extension rod (89) is fixedly connected to the outer wall of the adjustment plug (88), and a raised adjustment seat side groove (810) is fixedly connected to the top of the sealing adjustment tube (87), the adjustment seat side groove (810) is located at both ends of the sealing detection cavity (8), and the extension rod (89) extends to the inside of the adjustment seat side groove (810), and is fixedly connected to a linkage clamp (811) at one end away from the sealing adjustment tube (87).

5. The airtightness detection device for cans according to claim 1, characterized in that: The end of the air pressure detection tube (41) away from the transparent tube (42) passes through the sealed detection chamber (8) and the auxiliary support column (33), and the end close to the sealed detection chamber (8) is connected to the piston linkage block (48). The interior of the air pressure detection tube (41) is fixedly installed with a limit horizontal plate (43), and the interior of the limit horizontal plate (43) is movably sleeved with a sensing rod (47). One end of the sensing rod (47) is fixedly connected to the piston linkage block (48), and the end of the sensing rod (47) away from the piston linkage block (48) is fixedly connected to the transmission rod (44). ), the outer wall of the transmission rod (44) is movably sleeved with a transmission spring (45), the end of the transmission rod (44) away from the sensor rod (47) is fixedly connected to the extrusion contact (46), the bottom of the piston linkage block (48) is fixedly connected to the contact linkage rod (49), the bottom of the contact linkage rod (49) and the top of the linkage clamping block (811) are fixedly connected, the interior of the transparent cylinder (42) is filled with detection liquid (410), and the outlet of the end of the air pressure detection tube (41) away from the auxiliary support column (33) is located inside the limit horizontal plate (43).

6. The airtightness detection device for cans according to claim 1, characterized in that: The top pressing assembly (5) further comprises a pressing buffer block (53), an adjusting spring (54), a side adjusting plate (55), an adjusting original plate (56), a driving connecting column (57), a central guide rod (58) and a pressure adjusting disk (59). The pressing buffer block (53) is fixedly installed inside the side pressing tube (52). The bottom of the pressing buffer block (53) is fitted with an adjusting spring (54). Both ends of the adjusting spring (54) are fixedly connected to the side adjusting plate (55). The end of the side adjusting plate (55) away from the pressing buffer block (53) is fitted with the adjusting original plate (56). ), the top of the top pressing plate (51) is fixedly connected to a driving connecting column (57), the top of the driving connecting column (57) is movably connected to the inside of the pneumatic cylinder (2), the inside of the adjusting original plate (56) is fixedly installed with a central guide rod (58), the end of the central guide rod (58) away from the adjusting original plate (56) is fixedly connected to a pressure regulating disk (59), both ends of the pressure regulating disk (59) are provided with regulating disk side holes (510), and the regulating spring (54), the pressing buffer block (53) and the side regulating plate (55) are all movably connected to the outer wall of the central guide rod (58).

7. The airtightness detection device for cans according to claim 6, characterized in that: The interior of the press-fit buffer block (53) includes a buffer bottom groove (7), a bottom top block (71), a side limiting groove (72) and a side guide groove (73). The bottom of the press-fit buffer block (53) is provided with a buffer bottom groove (7), and the inside of both sides of the buffer bottom groove (7) are movably sleeved with the bottom top block (71). The inside of the press-fit buffer block (53) is provided with symmetrical side limiting grooves (72) and side guide grooves (73).

8. The airtightness detection device for cans according to claim 7, characterized in that: The top of the bottom top block (71) is fixedly mounted with a top block driving column (75), the outer wall of the top block driving column (75) is movably sleeved with a driving column sleeve (74), the top of the driving column sleeve (74) is fixedly connected to the inside of the press-fit buffer block (53), the top of the inner cavity of the driving column sleeve (74) is fixedly mounted with a return spring rod (76), and the outer wall of the return spring rod (76) is movably sleeved with a spring rod (77), the bottom of the spring rod (77) and the top of the top block driving column (75) are fitted with each other, and the inside of the top block driving column (75) and the outer wall of the return spring rod (76) are movably sleeved, and one side of the top of the driving column sleeve (74) is fixedly mounted with a side adjustment The side adjustment tube (78) is movably sleeved with an adjustment rod (79), the outer wall of the adjustment rod (79) is fixedly connected with a driving block (710), the end of the driving block (710) away from the adjustment rod (79) is fixedly connected with a stabilizing slider (711), a side locking tube (712) is fixedly installed on one side of the bottom of the driving column sleeve (74), the side locking tube (712) is movably sleeved with a locking pin plug (714), the outer wall of the locking pin plug (714) is fixedly connected with a pin plug linkage rod (715), and the pin plug linkage rod (715) is movably connected with a ball (713) at one end away from the locking pin plug (714).

9. The airtightness detection device for cans according to claim 6, characterized in that: When the pressure at the bottom of the pressure regulating disc (59) is greater than 0.2 MPa, the disc will be lifted up. When the pressure at the bottom of the pressure regulating disc (59) is less than 0.2 MPa, the disc will shrink and fit on the top of the top pressing plate (51).

10. The air tightness detection device for cans according to claim 8, characterized in that: The top and bottom of the top block driving column (75) are filled with air, and when the top block driving column (75) moves upward, a suction force is generated at the bottom, and when the top block driving column (75) moves downward, a suction force is generated at the top.

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