CN118753601B - Sealing machine with tightness detection function - Google Patents

Abstract

The invention relates to the technical field of air tightness detection of packaging bags, in particular to a sealing machine with a tightness detection function, which comprises a movable clamping device, a movable extrusion mechanism, an adsorption expansion device and a sealing device, wherein the movable clamping device is provided with a clamping end for clamping the packaging bags, the clamping end of the movable clamping device is provided with an air pressure sensor, the adsorption expansion device is arranged below the movable clamping device and is used for expanding the openings of the packaging bags, the sealing device is arranged right below the adsorption expansion device and is used for heat-sealing the openings of the packaging bags, the movable extrusion mechanism is arranged below the movable clamping device and is used for extruding the packaging bags.

Description

Sealing machine with tightness detection function

Technical Field

The invention relates to the technical field of air tightness detection of packaging bags, in particular to a sealing machine with a tightness detection function.

Background

The sealing machine has extremely wide application in the fields of modern industrial production and packaging, and is required to realize packaging and sealing through the sealing machine to ensure the safety and the shelf life of the products, namely foods, medicines and daily chemical products.

Chinese patent CN220982562U discloses a millet wrapping bag gas tightness detection device, belong to wrapping bag gas tightness detection technical field, including box and capper, the capper below is equipped with the detection groove has been seted up on the conveyer belt box, be equipped with two-way extrusion mechanism in the detection groove, including servo motor, stripper plate and two-way screw rod in the two-way extrusion mechanism, servo motor fixedly connected with output shaft, output shaft and two-way screw rod fixedly connected with installation pole in the detection groove, install a plurality of cotton cloth strips on the installation pole, two collecting tanks have been seted up in the detection groove, be equipped with categorised lantern ring on the box. According to the utility model, by arranging the bidirectional extrusion mechanism and sequentially lightly extruding the single inflated packaging bags, whether the packaging bags are completely sealed or not is detected, the efficiency is high, and the situation of missing samples is not easy to occur; through setting up the classification lantern ring that extends in the box outside, can lift up to carry out classification collection to the wrapping bag after detecting when not influencing the observation operation.

The technical scheme can sample and detect the sealing of the sealed packaging bag, the problem is difficult to find in time when the sealing performance detection of the sealing depends on the sampling detection, partial defective products flow out, the product is returned in the later period, the efficiency is low, and the quality risk is high. In addition, some high-end markets or special application scenarios have extremely high demands on package tightness, and conventional sealers are more difficult to meet.

Disclosure of Invention

To above-mentioned problem, provide a capper with leakproofness detects function, through remove clamping device, remove extrusion mechanism, adsorb expansion device and closing device cooperation, can effectual encapsulation package and detect the encapsulation, effectual assurance work efficiency, guarantee job quality simultaneously.

In order to solve the problems in the prior art, the invention provides a sealing machine with a tightness detection function, which comprises a movable clamping device, a movable extrusion mechanism, an adsorption expansion device and a sealing device, wherein the movable clamping device is provided with a clamping end for clamping a packaging bag, the clamping end of the movable clamping device is provided with an air pressure sensor, the adsorption expansion device is arranged below the movable clamping device and is used for expanding a packaging bag opening, the sealing device is arranged right below the adsorption expansion device and is used for heat-sealing the packaging bag opening, and the movable extrusion mechanism is arranged below the movable clamping device and is used for extruding the packaging bag.

Preferably, the movable clamping device comprises a rotating table, a plurality of sealing clamps are arranged on the rotating table and used for sealing and clamping the packaging bag opening, and a pushing and pressing adjusting rail is arranged at the top of the rotating table and used for adjusting and controlling the sealing clamps.

Preferably, the sealing clamp comprises a communicating block arranged on the rotating table, an air inlet hole and an air outlet hole are formed in the communicating block, a plurality of first guide angles are arranged at the bottom of the communicating block, a first sealing strip is arranged on the outer side of the communicating block, a plurality of splicing shrinkage blocks are arranged on the outer side of the communicating block, and a synchronous pushing seat is arranged at the top of the communicating block.

Preferably, the abutting surface of the spliced shrinkage block is provided with a second sealing strip, the outer side of the spliced shrinkage block is provided with a guide oblique angle, the guide oblique angle abuts against the synchronous pushing seat, the spliced shrinkage block is further provided with a first connecting column, the first connecting column is in sliding connection with the communicating block, and a first reset spring is arranged between the first connecting column and the communicating block.

Preferably, the synchronous pushing seat comprises a lifting pushing plate arranged at the top of the communicating block, a second connecting column is arranged between the lifting pushing plate and the communicating block, a second reset spring is arranged between the second connecting column and the communicating block, a plurality of collision balls are arranged at the top of the lifting pushing plate and collide with the pushing adjusting rail, a synchronous pushing block is further arranged below the lifting pushing plate, and the synchronous pushing block collides with the splicing shrinkage block.

Preferably, the pushing and pressing adjusting rail is provided with a pushing and pressing convex surface and a decompression groove, and the lifting and adjusting plate is installed in the decompression groove.

Preferably, the movable squeezing mechanism comprises a rotary driving table arranged below the movable clamping device, and a plurality of elastic squeezing frames are arranged on the rotary driving table.

Preferably, the elastic extrusion frame comprises a rotary mounting seat arranged on the rotary driving table, and a plurality of expansion extrusion rods which elastically expand are arranged on the rotary mounting seat.

Preferably, the adsorption and expansion device comprises a first linkage clamping mechanism arranged below the movable clamping device, and a plurality of suckers are arranged at the clamping end of the first linkage clamping mechanism.

Preferably, the sealing device comprises a second linkage clamping mechanism arranged below the first linkage clamping mechanism, and the clamping ends of the second linkage clamping mechanism are symmetrically provided with heat sealing knives.

Compared with the prior art, the invention has the beneficial effects that:

the clamping end of the movable clamping device is also provided with a gas pipeline and an air exhaust pipeline. And a lifting pushing table for pushing the packaging belt to lift is also arranged below the sealing device.

The packaging bag opening detection device comprises a lifting pushing table, a sealing device, a movable clamping device, a movable pressing mechanism and a movable pressing mechanism, wherein the packaged articles and packaging bags are placed on the lifting pushing table below the sealing device through manual work or a conveyor, the lifting pushing table can drive the packaging bags to ascend, the packaging bags can sequentially pass through the sealing device and the adsorption expansion device to move to the lower side of the movable clamping device when ascending, at the moment, the adsorption expansion device can adsorb and expand a packaging bag opening, the packaging bags in the opening state can be driven to ascend synchronously by the lifting pushing table when the adsorption expansion device stops adsorbing, the packaging bags in the opening state can be sleeved on the clamping end of the movable clamping device when ascending, the movable clamping device seals the packaging bag opening, the sealing device can heat-seal the packaging bags later, the movable clamping device drives the packaged packaging bags to move to the movable pressing mechanism, the movable pressing mechanism can squeeze the packaging bags to the appointed position, and when the packaging bags are pressed, the air pressure sensor can detect whether the air pressure inside the packaging bag opening changes, if the pressure in the packaging bag opening area increases, and the pressure in the packaging bag opening area does not change. Can effectually encapsulate the wrapping bag and detect the encapsulation, effectively ensure work efficiency, ensure work quality simultaneously.

Drawings

Fig. 1 is a front view of a sealing machine with a seal detecting function.

Fig. 2 is a perspective view of a sealing machine with a sealing performance detecting function.

Fig. 3 is a schematic perspective view of a sealing jig in a sealing machine with a sealing performance detecting function.

Fig. 4 is a schematic perspective view of a sealing jig in a sealing machine with a sealing performance detecting function.

Fig. 5 is a plan sectional view of a sealing jig in a sealing machine having a sealing performance detecting function.

Fig. 6 is a schematic perspective view of a push adjusting rail in a sealing machine with a tightness detecting function.

Fig. 7 is a plan view of a movable pressing mechanism in the sealing machine with a seal detecting function.

Fig. 8 is a perspective view of an elastic pressing frame in a sealing machine with a sealing performance detecting function.

Fig. 9 is a partial enlarged view at a in fig. 8.

Fig. 10 is a schematic perspective view of an adsorption and expansion device and a sealing device in a sealing machine with a sealing performance detecting function.

Fig. 11 is a schematic perspective view of an adsorption and expansion device and a sealing device in a sealing machine with a sealing performance detection function.

The reference numerals in the figures are:

1. A mobile gripping device; 11. an air pressure sensor; 12. a rotating table; 13. sealing the clamp; 131. a communicating block; 1311. an air inlet hole; 1312. an air outlet hole; 1313. a first lead angle; 1314. a first sealing strip; 132. assembling the shrinkage blocks; 1321. a second sealing strip; 1322. a guiding bevel; 1323. a first connection post; 1324. a first return spring; 133. synchronous pushing and pressing seat; 1331. lifting the push plate; 1332. a second connection post; 1333. a second return spring; 1334. the ball is abutted against; 1335. synchronously pressurizing the blocks; 14. pushing and pressing the adjusting rail; 141. pressing the convex surface; 142. decompressing the groove; 143. pushing and pressing the adjusting plate; 144. a first linear driver; 2. a movable extrusion mechanism; 21. a rotary driving table; 22. an elastic extrusion frame; 221. rotating the mounting seat; 2211. a limit sliding rail; 222. a vertical mounting column; 223. expanding the extrusion rod; 224. a lifting block; 225. a first connecting rod; 226. a first urging spring; 3. an adsorption and expansion device; 31. the first linkage clamping mechanism; 311. a mounting frame; 3111. a limit mounting rail; 312. a clamping rod; 313. a synchronous connecting block; 314. a second connecting rod; 315. a mounting column; 316. a push plate; 317. a second urging spring; 318. a second linear driver; 32. a suction cup; 4. a sealing device; 41. a second linkage clamping mechanism; 42. a heat sealing knife; 5. lifting the pushing table; 6. and (5) packaging bags.

Detailed Description

The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.

Referring to fig. 1 to 11, a sealing machine with tightness detection function comprises a movable clamping device 1, a movable extrusion mechanism 2, an adsorption expansion device 3 and a sealing device 4, wherein the movable clamping device 1 is provided with a clamping end for clamping a packaging bag 6, an air pressure sensor 11 is arranged on the clamping end of the movable clamping device 1, the adsorption expansion device 3 is arranged below the movable clamping device 1, the adsorption expansion device 3 is used for expanding a packaging bag opening, the sealing device 4 is arranged under the adsorption expansion device 3, the sealing device 4 is used for heat-sealing the packaging bag opening, the movable extrusion mechanism 2 is arranged below the movable clamping device 1, and the movable extrusion mechanism 2 is used for extruding the packaging bag.

The clamping end of the movable clamping device 1 is also provided with a gas pipeline and an air exhaust pipeline. A lifting pushing table 5 for pushing the packaging belt to lift is also arranged below the sealing device 4.

When needs carry out the inflation seal to wrapping bag 6, article and wrapping bag 6 that will pack through artifical or conveyer are placed on lift pushing away bench 5 of closing device 4 below together, after the wrapping bag 6 was placed the assigned position, lift pushing away bench 5 can drive wrapping bag 6 and rise, can pass closing device 4 in proper order when wrapping bag 6 rises and adsorb expanding device 3 and remove the below that presss from both sides get device 1, at this moment, adsorb expanding device 3 can adsorb the expansion with the wrapping bag mouth, make the wrapping bag mouth keep expanding, when adsorbing expanding device 3 stops adsorbing, lift pushing away bench 5 can drive the wrapping bag 6 of opening the state and rise in step, the wrapping bag mouth can overlap when wrapping bag 6 rises and establish the holding end that removes and press from both sides get device 1, remove and press from both sides and get device 1 to seal the centre gripping of wrapping bag mouth, remove and get device 1 and carry out sealed centre gripping through the gas transmission pipeline to wrapping bag 6, make the inside keep expanding of wrapping bag 6, then sealing device 4 can carry out the heat-seal to wrapping bag 6 after making wrapping bag 6, remove and press from both sides and get device 1 and drive the packing bag mouth and adsorb expanding, make the wrapping bag mouth keep expanding, make the moving mechanism 2, remove the sealing device 1 and remove the sealing device and detect if the sealing device is good to detect the wrapping bag mouth and detect the pressure change and if the wrapping bag is good when the pressure is good, if the region is pressed from both sides the wrapping bag mouth is good, if the region is detected to the sealing device is good, can detect the pressure is changed, if the sealing device is changed, and the area is changed and the pressure is detected to the wrapping bag is detected and the area is detected to the wrapping bag is detected to be detected to the pressure is detected.

When packing bag 6 is required to be subjected to air extraction and encapsulation, article and packing bag 6 that will pack through artifical or conveyer are placed on lift pushing away bench 5 of closing device 4 below together, after the assigned position was placed to packing bag 6, lift pushing away bench 5 can drive packing bag 6 and rise, can pass closing device 4 in proper order when packing bag 6 rises and adsorb expanding device 3 and remove the below that presss from both sides getting device 1, at this moment, adsorb expanding device 3 can adsorb the expansion with the wrapping bag mouth, make the wrapping bag mouth keep expanding, when adsorbing expanding device 3 stops adsorbing, lift pushing away bench 5 can drive the wrapping bag 6 of opening the state and rise in step, the wrapping bag mouth can overlap and establish the holding end that removes and press from both sides getting device 1 when packing bag 6 rises, remove and press from both sides getting device 1 to seal the wrapping bag mouth and carry out the centre gripping, through the inside gas extraction of pumping pipeline with wrapping bag 6, after the inside gas extraction of wrapping bag 6, sealing device 4 can carry out the heat-seal 6 in proper order, inside keep the state of taking device 1 moves the 6 and moves to the detection zone, make the wrapping bag mouth keep the good to carry gas-sealing device, make the wrapping bag mouth carry the gas-sealing device to seal mouth, if the air pressure change can not appear, if the sealing device is good pressure change, if the sealing bag mouth can be detected, the sealing device is moved and the sealing bag mouth is good, the pressure can be detected, the area is changed, if the sealing bag is changed, and the sealing mouth is detected and the sealing mouth is good, the pressure can be detected, and the area is changed, and the pressure is detected, and the area is good is detected.

The device can effectually encapsulate the wrapping bag and detect the encapsulation, effectively guarantees work efficiency, ensures work quality simultaneously.

The lifting pushing table 5 is the prior art and will not be described here.

Referring to fig. 1 and 2, the mobile gripping device 1 includes a rotating table 12, a plurality of sealing jigs 13 are mounted on the rotating table 12, the sealing jigs 13 are used for sealing and gripping the package mouth, a pushing and pressing adjusting rail 14 is mounted on the top of the rotating table 12, and the pushing and pressing adjusting rail 14 is used for adjusting and controlling the sealing jigs 13.

The mobile gripping device 1 comprises a rotating table 12, on which a plurality of sealing jaws 13 are mounted. Each sealing jig 13 is an important tool for accurately gripping and sealing the mouth of the package. Meanwhile, a pushing and adjusting rail 14 is arranged on the top of the rotating table 12, and the pushing and adjusting rail 14 is used for adjusting and controlling the opening and closing positions of the sealing clamp 13.

When the packaging bag 6 is processed by the adsorption and expansion device 3, the opening of the bag is opened. At this time, the lifting pushing table 5 drives the packaging bag 6 to lift, so that the bag mouth is sleeved on the sealing clamp 13 of the movable clamping device 1. The pushing and pressing adjustment rail 14 adjusts the opening and closing of the sealing clamp 13, so that the sealing clamp 13 can tightly clamp the packaging bag opening. After clamping the mouth of the packaging bag. Next, according to the sealing requirement, the movable clamping device 1 can convey a certain amount of gas into the packaging bag 6 through a gas pipeline, so that the interior of the packaging bag 6 is expanded, and expansion packaging is realized; or the air in the packaging bag 6 is pumped out through the air pumping pipeline, so as to realize air pumping packaging. After inflation or evacuation is completed, the sealing device 4 will heat seal the package opening. During the heat-sealing process, the sealing jig 13 maintains the holding and sealing state of the package bag mouth, ensuring the effectiveness of the heat-sealing operation. After the heat sealing is completed, the moving clamping device 1 drives the packaged packaging bag 6 to move to a detection area. When the packaging packaged by air extraction is subjected to sealing detection, the movable clamping device 1 can convey air to the packaging bag opening again through the air conveying pipeline, so that a certain amount of air is accumulated at the packaging bag opening. At this time, the air pressure sensor 11 detects whether the air pressure in the pocket area is changed. If the pressure in the mouth area of the package is reduced, indicating that leakage exists; if the pressure is not changed, it indicates good sealability. To the packing bag 6 of inflation packaging, remove extrusion mechanism 2 and extrude the packing bag 6 that removes the assigned position, when the extrusion of packing bag 6 received, whether the inside atmospheric pressure of air pressure sensor 11 can detect the packing bag mouth appears changing, if the regional pressure increase of packing bag mouth then indicates that the packing bag mouth has revealed, and the regional pressure of packing bag mouth does not change then can indicate that the leakproofness is good. The design of the rotating table 12 enables the plurality of sealing clamps 13 to sequentially clamp, seal, heat seal and detect, thereby greatly improving the working efficiency. At the same time, the regulatory function of the push-on regulation rail 14 ensures that each package mouth is accurately gripped and sealed.

Referring to fig. 2 and 3, the sealing clamp 13 includes a communicating block 131 mounted on the rotary table 12, an air inlet hole 1311 and an air outlet hole 1312 are formed in the communicating block 131, a plurality of first guide angles 1313 are formed in the bottom of the communicating block 131, a first sealing strip 1314 is arranged on the outer side of the communicating block 131, a plurality of assembling shrinkage blocks 132 are mounted on the outer side of the communicating block 131, and a synchronous pushing seat 133 is mounted on the top of the communicating block 131.

The communicating block 131 is provided with an air inlet hole 1311 and an air outlet hole 1312 for respectively supplying air into the packing bag 6 and exhausting air from the packing bag 6. During the inflation packaging process, gas enters the packaging bag 6 through the gas inlet holes 1311, so that the packaging bag 6 is inflated; in the air extraction packaging process, air is extracted through the air outlet holes 1312, so that air extraction packaging of the packaging bag 6 is realized. The bottom of the communicating block 131 is provided with a plurality of first guide angles 1313 which function as guides and positions when the package opening is gripped, ensuring that the package opening can be gripped and positioned accurately in the sealing jig 13. The outside of the communicating block 131 is provided with a first sealing strip 1314 for forming tight contact with the package opening when the package opening is clamped, thereby sealing the package opening. When the sealing clamp 13 clamps the package opening, the first sealing strip 1314 will closely fit the package opening to prevent gas from leaking from the package opening during the inspection process. The top of the communicating block 131 is mounted with a synchronous pushing seat 133. The synchronous pushing seat 133 is controlled by pushing the pushing adjusting rail 14, and when the synchronous pushing seat 133 is pressed down, the plurality of assembling shrinkage blocks 132 can be synchronously pushed to synchronously shrink, and the synchronous pushing seat 133 can provide uniform pushing force when clamping the packaging bag opening, so that the packaging bag opening is ensured to be uniformly clamped and sealed. Meanwhile, in the heat sealing process, the synchronous pushing seat 133 can also maintain continuous pressure on the packaging bag opening, so that the effectiveness of the heat sealing operation is ensured.

Referring to fig. 3 to 5, a second sealing strip 1321 is disposed on the abutting surface of the assembling and contracting block 132, a guiding bevel 1322 is disposed on the outer side of the assembling and contracting block 132, the guiding bevel 1322 abuts against the synchronous pushing seat 133, a first connecting column 1323 is further mounted on the assembling and contracting block 132, the first connecting column 1323 is slidably connected with the communicating block 131, and a first return spring 1324 is mounted between the first connecting column 1323 and the communicating block 131.

The first sealing strip 1314 outside the communicating block 131 may form tight contact with the package opening when the package opening is clamped, thereby achieving preliminary sealing of the package opening. With the synchronous pushing seat 133 pressed down, the plurality of assembling and contracting blocks 132 are pushed by the synchronous pushing seat 133 to synchronously contract. This shrinkage action is achieved by assembling the shrinkage block 132 against the synchronous pushing seat 133, and a second sealing strip 1321 is provided on the abutting surface, which further enhances the sealing effect of the package opening. The outer side of the assembling and contracting block 132 is provided with guiding bevel angles 1322 which can ensure that the assembling and contracting block 132 moves along a preset track in the contracting process when the bevel angles are in conflict with the synchronous pushing and pressing seat 133, thereby ensuring that the packaging bag mouth is clamped and sealed uniformly and tightly. The first connecting post 1323 is further mounted on the assembling and contracting block 132, and the first connecting post 1323 is slidably connected with the communicating block 131, and this connection mode allows the assembling and contracting block 132 to contract along the direction of the first connecting post 1323 when being pushed. Meanwhile, a first return spring 1324 is installed between the first connecting post 1323 and the communicating block 131, and the first return spring 1324 has the function of enabling the assembling shrinkage block 132 to recover to the initial position under the action of no external force, so that the next clamping and packaging operation is convenient. The effectual sealed centre gripping wrapping bag mouth ensures the stability that the leakproofness detected.

Referring to fig. 3 to 5, the synchronous pushing seat 133 includes a lifting pushing plate 1331 mounted on the top of the communicating block 131, a second connecting column 1332 mounted between the lifting pushing plate 1331 and the communicating block 131, a second return spring 1333 mounted between the second connecting column 1332 and the communicating block 131, a plurality of abutting balls 1334 mounted on the top of the lifting pushing plate 1331, the abutting balls 1334 abutting against the pushing adjustment rail 14, a synchronous pressing block 1335 mounted under the lifting pushing plate 1331, and the synchronous pressing block 1335 abutting against the splicing shrinkage block 132.

The lifting push plate 1331 is installed at the top of the communication block 131, is connected to the communication block 131 through a second connection post 1332, and has a second return spring 1333 installed therebetween. This design allows the lifting push plate 1331 to descend when pushed by the outside and return to the original position by the elastic force of the second return spring 1333 when no external force acts. A plurality of abutting balls 1334 abutting against the push adjusting rail 14 are mounted on the top of the lifting push plate 1331. When the push adjusting rail 14 moves downward, it pushes the abutting balls 1334, so that the lifting push plate 1331 descends, and a synchronous pressing block 1335 is mounted below the lifting push plate 1331 and abuts against the splicing shrinkage block 132. When the lifting push plate 1331 descends, the synchronous pressing block 1335 synchronously pushes the plurality of splicing shrinkage blocks 132 to shrink. Be equipped with second sealing strip 1321 on assembling shrink block 132's the conflict face, when assembling shrink block 132 shrink, second sealing strip 1321 can form inseparable contact with the wrapping bag mouth, ensures the sealed effect of wrapping bag mouth, and when assembling shrink block 132 outside guide oblique angle 1322 and synchronous pressing piece 1335 conflict, can ensure to assemble shrink block 132 and remove along predetermined orbit in the shrink process. The design ensures that the packaging bag opening is clamped and sealed uniformly and tightly, and avoids deformation or damage of the packaging bag opening.

Referring to fig. 2 and 6, the push adjusting rail 14 is provided with a push convex surface 141 and a decompression groove 142, and a push adjusting plate 143 which can be adjusted up and down is installed inside the decompression groove 142.

The push adjusting rail 14 is further provided with a first linear actuator 144, and an output end of the first linear actuator 144 is connected to the push adjusting plate 143.

The push adjusting rail 14 is provided with a pressing convex surface 141 and a pressing groove 142 for interacting with a pressing ball 1334 on a lifting push plate 1331 in the mobile gripping device 1. The pressing ball 1334 moves downward when it moves to the position where the convex surface 141 is pressed, and the pressing ball 1334 moves upward when it moves to the decompression groove 142.

When the packaging bag 6 is processed by the adsorption and expansion device 3, the opening of the bag is opened. At this time, the lifting pushing table 5 drives the packaging bag 6 to lift, so that the bag mouth is sleeved on the sealing clamp 13 of the movable clamping device 1. At this time, the first linear actuator 144 drives the push adjusting plate 143 to be pushed down. When the push adjusting plate 143 is pushed down, the abutting ball 1334 is pushed down immediately, and the lifting push plate 1331 descends through the second connecting column 1332 and compresses the second return spring 1333 as the abutting ball 1334 is pushed down. Simultaneously, synchronous pressurizing blocks 1335 below the lifting pushing plates 1331 are contacted with the splicing shrinkage blocks 132 and pushed to shrink, so that the second sealing strips 1321 are tightly contacted with the packaging bag opening, and sealing and clamping movement is realized. Sealing device 4 can seal the wrapping bag 6 of centre gripping afterwards, wrapping bag 6 seals the back, the rotation of rolling table 12 can drive seal clamp 13 and remove the detection zone, conflict ball 1334 can remove to pressing convex surface 141 position when seal clamp 13 removes, pressing convex surface 141 can remain the centre gripping conflict ball 1334 state of pushing down all the time, after wrapping bag 6 detects, rolling table 12 can continue to drive seal clamp 13 and remove the unloading region, seal clamp 13 removes the unloading region, conflict ball 1334 can remove corresponding decompression recess 142 in, then conflict ball 1334 can upwards move, conflict ball 1334 upwards moves, thereby drive lifting push pedal 1331 and rise. At this time, the second return spring 1333 releases the stored elastic potential energy, helping the lifting push plate 1331 to return to the initial position. Along with the lifting push plate 1331, the synchronous pressing block 1335 releases the pressure on the splicing shrinkage blocks 132 to restore them to the original state, thereby releasing the package mouth and allowing the package to fall down to the area to be processed.

Referring to fig. 1, 2 and 7, the moving press mechanism 2 includes a rotary drive table 21 mounted below the moving gripping device 1, and a plurality of elastic press frames 22 are mounted on the rotary drive table 21.

The elastic extrusion frames 22 are uniformly distributed at equal intervals, and extrusion channels are formed between the elastic extrusion frames 22.

When the packed packing bag 6 is moved to the moving squeeze mechanism 2 by the moving gripper 1, the packing bag 6 moves into the squeeze path on the rotary drive table 21. Subsequently, the rotary driving table 21 starts to operate, and drives the elastic pressing frame 22 to rotate. During rotation, the resilient squeeze shelf 22 directs the bag 6 into the squeeze tunnel, and the bag 6 is uniformly and moderately squeezed as it passes through the squeeze tunnel. This squeezing is to further detect the sealability of the package 6, particularly the sealing of the package mouth. If the sealing property of the packing bag 6 is good, the gas pressure inside the packing bag 6 can be kept relatively stable when the packing bag 6 is pressed, and no obvious change of the gas pressure can occur. However, if there is leakage at the mouth of the package, gas inside the package 6 may escape through the leakage point when being squeezed, resulting in a decrease in the gas pressure inside the package 6. By moving the air pressure sensor 11 on the gripping device 1, the change in air pressure inside the package 6 can be monitored in real time. If the air pressure sensor 11 detects that the air pressure of the packaging bag 6 is obviously reduced in the extrusion process, the leakage of the opening part of the packaging bag is indicated; on the contrary, if the air pressure is kept stable, it means that the sealing property of the packing bag 6 is good. The tightness of the packaging bag 6 is effectively detected, the sealing quality is ensured, and the packaging quality of products is improved.

The rotary driving table 21 is of the prior art and will not be described here.

Referring to fig. 7, 8 and 9, the elastic pressing frame 22 includes a rotation mounting seat 221 mounted on the rotation driving table 21, and a plurality of elastically expanded expansion pressing rods 223 are mounted on the rotation mounting seat 221.

The rotation mount pad 221 is last to be equipped with a plurality of spacing slide rails 2211, and the axle center position of rotation mount pad 221 still is equipped with vertical erection column 222, and spacing slide rail 2211 is used for installing expansion extrusion pole 223, installs the lifter 224 on the vertical erection column 222, installs first bulldozing spring 226 between lifter 224 and the vertical erection column 222, all installs head rod 225 between lifter 224 and the expansion extrusion pole 223.

The expansion and compression rods 223 are mounted in the limit slide 2211 on the swivel mount 221 to ensure that they can move along a predetermined path while maintaining a stable arrangement and spacing. The pivot position of the rotary mounting base 221 is provided with a vertical mounting post 222. On the vertical mounting column 222, a lifting block 224 is mounted, and a first urging spring 226 is mounted between the lifting block 224 and the vertical mounting column 222. The first push spring 226 provides an upward force to the lifting block 224 so that the lifting block 224 can perform a resilient lifting motion. A first connecting rod 225 is installed between the lifting block 224 and each expansion extrusion rod 223. The first connecting rod 225 connects the elevating block 224 with the expansion extrusion rod 223 such that the movement of the elevating block 224 can drive the expansion extrusion rod 223 to move together. When the lifting block 224 is lifted, the expansion extrusion rod 223 is expanded outward by the first connection rod 225. In the detection process, when the packaged packaging bag 6 is gripped by the moving gripping device 1 and moved to the elastic pressing frame 22, the expansion pressing rod 223 guides the packaging bag 6 to enter the pressing passage along with the rotation of the rotation driving table 21, and the expansion pressing rod 223 presses the packaging bag 6 uniformly. If the sealability of the packing bag 6 is good, the internal air pressure thereof is kept stable; if there is a leak, the air pressure will drop. This change can be monitored in real time by moving the air pressure sensor 11 on the gripping device 1, thereby achieving an effective detection of the tightness of the package 6.

Referring to fig. 1, 10 and 11, the suction expanding device 3 includes a first linkage clamping mechanism 31 installed below the moving gripping device 1, and a plurality of suction cups 32 are provided at a clamping end of the first linkage clamping mechanism 31.

The first linkage fixture 31 is used for driving a plurality of sucking discs 32 to carry out synchronous clamping movement, the first linkage fixture 31 includes mounting frame 311, be equipped with spacing mounting rail 3111 on the mounting frame 311, install a plurality of clamping bars 312 on the spacing mounting rail 3111, the side of clamping bar 312 is equipped with synchronous connecting block 313, all install second connecting rod 314 between synchronous connecting block 313 and the clamping bar 312, still be equipped with erection column 315 on the synchronous connecting block 313, install push plate 316 on the erection column 315, push plate 316 and erection column 315 sliding connection, still install the second push spring 317 between push plate 316 and the erection column 315, the lateral part of mounting frame 311 still installs second linear actuator 318, the output of second linear actuator 318 is connected with push plate 316.

The mounting frame 311 is a supporting structure for the entire first linkage clamping mechanism 31, and the limit mounting rail 3111 is used for mounting the clamping lever 312. The synchronous connection block 313 is connected to the clamping bar 312 by a second connection bar 314. The mounting post 315 is mounted on the synchronous connection block 313, and the pressing plate 316 is slidably connected to the mounting post 315, so that the pressing plate 316 can slide up and down along the mounting post 315. A second pressing spring 317 is installed between the pressing plate 316 and the mounting post 315, and the second pressing spring 317 is used to provide a buffering elastic force. The second linear actuator 318 is mounted on a side of the mounting frame 311, and its output end is connected to the push plate 316.

When the package bag opening needs to be expanded, the second linear driver 318 works to push the push plate 316 to move, so that the movement of the push plate 316 drives the synchronous connection block 313 to move through the second push spring 317, and the synchronous connection block 313 contracts and moves together through the second connection rod 314 and the clamping rod 312 when moving, so that the suction cup 32 approaches the package bag opening. When the suction cup 32 contacts the package opening, the package opening is sucked due to the negative pressure in the suction cup 32. At this point, the second linear actuator 318 continues to operate, expanding the clamping bar 312 outwardly, thereby expanding the bag mouth. After the package opening is opened, the suction expanding device 3 stops working, and the sucking disc 32 releases the package opening. At this time, the lifting pushing table 5 drives the packaging bag 6 to lift, so that the opening of the packaging bag is sleeved on the clamping end of the movable clamping device 1, and the subsequent sealing operation is performed.

Referring to fig. 1, 10 and 11, the sealing device 4 includes a second interlocking clamping mechanism 41 installed below the first interlocking clamping mechanism 31, and the clamping end of the second interlocking clamping mechanism 41 is symmetrically provided with a heat sealing knife 42.

The second linkage clamping mechanism 41 has the same structure as the first linkage clamping mechanism 31, and the second linkage clamping mechanism 41 is used for driving the heat sealing knife 42 to synchronously clamp and move.

When the opening of the packaging bag is opened and sleeved on the clamping end of the movable clamping device 1, the sealing device 4 starts to work. The second ganged clamping mechanism 41 is similar in structure to the first ganged clamping mechanism 31, but the clamping ends are provided with symmetrical heat seal knives 42. The second linkage clamping mechanism 41 is started to drive the heat sealing knife 42 to synchronously clamp and move towards the packaging bag opening. When the heat-seal knife 42 is brought into close contact with the package opening, the heat-seal knife 42 starts to heat and heat-seal the plastic films on both sides of the package opening together under pressure. After a certain period of heating and holding pressure, the package mouth is completely sealed, and the heat-sealing knife 42 stops heating and separates, completing the sealing operation.

The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.

Claims (6)

1. The sealing machine with the tightness detection function is characterized by comprising a movable clamping device (1), a movable extrusion mechanism (2), an adsorption expansion device (3) and a sealing device (4);

The movable clamping device (1) is provided with a clamping end for clamping the packaging bag (6), and the clamping end of the movable clamping device (1) is provided with an air pressure sensor (11);

The adsorption and expansion device (3) is arranged below the movable clamping device (1), and the adsorption and expansion device (3) is used for expanding the opening of the packaging bag;

The sealing device (4) is arranged right below the adsorption and expansion device (3), and the sealing device (4) is used for heat-sealing the package bag opening;

the movable extrusion mechanism (2) is arranged below the movable clamping device (1), and the movable extrusion mechanism (2) is used for extruding the package;

The movable clamping device (1) comprises a rotating table (12), a plurality of sealing clamps (13) are arranged on the rotating table (12), the sealing clamps (13) are used for sealing and clamping packaging bag openings, a pushing and pressing adjusting rail (14) is arranged at the top of the rotating table (12), and the pushing and pressing adjusting rail (14) is used for adjusting and controlling the sealing clamps (13);

the sealing clamp (13) comprises a communicating block (131) arranged on the rotating table (12), an air inlet hole (1311) and an air outlet hole (1312) are formed in the communicating block (131), a plurality of first guide angles (1313) are formed in the bottom of the communicating block (131), a first sealing strip (1314) is arranged on the outer side of the communicating block (131), a plurality of splicing shrinkage blocks (132) are arranged on the outer side of the communicating block (131), and a synchronous pushing seat (133) is arranged at the top of the communicating block (131);

The abutting surface of the assembling shrinkage block (132) is provided with a second sealing strip (1321), the outer side of the assembling shrinkage block (132) is provided with a guide bevel angle (1322), the guide bevel angle (1322) abuts against the synchronous pushing seat (133), the assembling shrinkage block (132) is also provided with a first connecting column (1323), the first connecting column (1323) is in sliding connection with the communicating block (131), and a first return spring (1324) is arranged between the first connecting column (1323) and the communicating block (131);

The synchronous pushing seat (133) comprises a lifting pushing plate (1331) arranged at the top of the communicating block (131), a second connecting column (1332) is arranged between the lifting pushing plate (1331) and the communicating block (131), a second reset spring (1333) is arranged between the second connecting column (1332) and the communicating block (131), a plurality of pushing balls (1334) are arranged at the top of the lifting pushing plate (1331), the pushing balls (1334) are pushed against the pushing adjusting rail (14), a synchronous pushing block (1335) is further arranged below the lifting pushing plate (1331), and the synchronous pushing block (1335) is pushed against the assembling shrinkage block (132).

2. The sealing machine with the tightness detection function according to claim 1, wherein the pushing and pressing adjusting rail (14) is provided with a pushing and pressing convex surface (141) and a decompression groove (142), and the pushing and pressing adjusting plates (143) capable of being adjusted in a lifting mode are arranged in the decompression groove (142).

3. The sealing machine with the tightness detection function according to claim 1, wherein the movable pressing mechanism (2) comprises a rotary driving table (21) arranged below the movable clamping device (1), and a plurality of elastic pressing frames (22) are arranged on the rotary driving table (21).

4. A sealing machine with a tightness detecting function according to claim 3, characterized in that the elastic pressing frame (22) comprises a rotary mounting base (221) mounted on the rotary driving table (21), and a plurality of expansion pressing rods (223) which elastically expand are mounted on the rotary mounting base (221).

5. The sealing machine with the tightness detection function according to claim 1, wherein the adsorption and expansion device (3) comprises a first linkage clamping mechanism (31) arranged below the movable clamping device (1), and a plurality of suckers (32) are arranged at the clamping end of the first linkage clamping mechanism (31).

6. The sealing machine with the tightness detection function according to claim 5, wherein the sealing device (4) comprises a second linkage clamping mechanism (41) arranged below the first linkage clamping mechanism (31), and the clamping ends of the second linkage clamping mechanism (41) are symmetrically provided with heat sealing knives (42).