Bag erecting apparatus and method

Abstract

The present application relates to the technical field of automatic packaging of prefabricated bags. The bag mouth correction device comprises a lifting column mechanism, a bag mouth correction mechanism arranged on the lifting column mechanism, a guiding bag conveying mechanism arranged on the lifting column mechanism, and the bag mouth correction mechanism is used for clamping the bag mouth of the packaging bag loaded with materials and correcting the height and levelness of the bag mouth, and the guiding bag conveying mechanism is used for conveying the bag mouth of the packaging bag clamped after being corrected by the bag mouth automatic correction structure. The bag mouth correction method is realized by using the above-mentioned correction device. The present application is used to solve the technical problem that the bag mouth offset of the existing packaging bag leads to sealing failure or unqualified sealing of the packaging bag.

Description

Technical Field

[0001] This invention relates to the field of automatic pre-made bag packaging technology, and in particular to an automatic correction device for the opening of a pre-made bag in an automatic packaging and sealing system, and a correction method using the above-mentioned correction device. Background Technology

[0002] For automatic bag packaging machines used for granular or powdery materials such as feed, grains, oils, chemicals, and food, when the filled bags are automatically fed into the automatic sealing machine, the bag openings may shift or tilt due to human error such as uneven bag placement or poor packaging material quality. This can cause the sealing position to fluctuate, leading to sealing failure or substandard sealing of the bags, failing to meet customer requirements for sealing quality. Consequently, the automatic packaging function may malfunction, requiring manual intervention and resulting in waste of packaging materials.

[0003] Currently, most automatic packaging equipment on the market only offers automatic packaging and automatic bag feeding; there are no related technologies and products for high-quality sealing precision. Summary of the Invention

[0004] The first objective of this invention is to provide a bag opening correction device to solve the technical problem of existing packaging bag opening deviation leading to sealing failure or unqualified packaging bag sealing.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a bag opening correction device, characterized in that it includes: Lifting column mechanism; A bag opening correction mechanism is installed on the lifting column mechanism and is used to clamp the bag opening of the packaging bag loaded with materials and to correct the height and level of the bag opening. The guiding bag conveying mechanism is installed on the lifting column mechanism and is used to clamp the bag opening of the packaging bag after it has been corrected by the automatic bag opening correction structure and then convey it.

[0006] The bag opening correction device of the present invention mainly consists of a guiding bag conveying mechanism, a bag opening correction mechanism, and a lifting column mechanism. It is mainly used to automatically correct the bag opening of the pre-made bag filled with materials in the automatic packaging machine before it is sent into the automatic sealing machine.

[0007] This invention is mainly used in automatic bag packaging machines for granular or powdery materials such as feed, grains, oils, chemicals, and food. After automatic packaging and filling, the height of the bag opening in the upright state is automatically corrected before the bag is sent to the automatic sealing machine. This ensures that the height of the bag opening remains consistent when the bag is filled with material and enters the sealing machine, thereby improving the sealing quality and success rate.

[0008] This invention features an automatic correction function that adjusts the level of the bag opening before it enters the sealing machine from a fully loaded stand-up bag in an automatic packaging machine. This ensures that the bag opening remains level when it enters the automatic sealing machine, thereby improving the sealing quality and success rate.

[0009] To address the technical problem of how to implement a lifting column structure, the present invention adopts the following technical solution, wherein the lifting column mechanism includes: Column body; A movable fixing frame is mounted on the column body via a transmission mechanism; under the action of the transmission mechanism, the movable fixing frame is movable relative to the column body. Locking assembly for locking the movable fixture when it is moved to the designed position.

[0010] To address the technical problem of how to implement the transmission mechanism in the lifting column mechanism, the present invention adopts the following technical solution, wherein the transmission mechanism includes: A worm gear assembly is mounted on the movable fixed frame; a rocker arm is connected to the input end of the worm gear reducer. A sprocket and chain assembly includes a sprocket shaft, a sprocket, and a chain; the sprocket shaft is connected to the output end of the worm gear reducer; a sprocket is mounted on the sprocket shaft; the chain is suspended from the column body and cooperates with the sprocket; A guide assembly, disposed on the sprocket shaft, is used to guide the movement of the movable fixing frame.

[0011] To solve the technical problem of the lifting column mechanism being unable to move, the present invention adopts the following technical solution: a movable component is provided at the bottom of the lifting column mechanism for moving and locking the bag opening correction device. When it is necessary to move the lifting column mechanism, the movable component is used to move the entire lifting column mechanism, and the position is locked after it is determined.

[0012] To address the technical problem of how to implement the mobile component, this invention adopts the following technical solution, wherein the mobile component includes: A base assembly, wherein casters are provided at the bottom of the base assembly; A locking element, disposed on the base assembly, is used to lock the base assembly when it is moved to the designed position. When movement is required, the entire lifting column mechanism can be moved by loosening the base rollers and the locking element; once the position is determined, the base rollers and locking bolts are tightened.

[0013] To address the technical problem of how to detect the height and levelness of the opening of a packaging bag, this invention adopts the following technical solution: a detection component is installed on a movable fixing frame to detect the height and levelness of the packaging bag.

[0014] To address the technical problem of how the detection component is implemented, the present invention adopts the following technical solution: the detection component includes a first detection component and a second detection component, wherein the first detection component and the second detection component are disposed on both sides of the movable fixed frame; The heights of the first detection component and the second detection component are adjustable; The distance between the first detection component and the second detection component is adjustable.

[0015] To solve the technical problem of how to adjust the distance between the first and second detection components, the present invention adopts the following technical solution: a first guide shaft and a second guide shaft are respectively provided on both sides of the movable fixing frame; the first detection component is slidably arranged on the first guide shaft; and the second detection component is slidably arranged on the second guide shaft.

[0016] To address the technical problem of how the bag opening correction mechanism is implemented, the present invention adopts the following technical solution, wherein the bag opening correction mechanism includes: A lifting assembly is mounted on the movable fixed frame; The clamping assembly is connected to the output end of the lifting assembly via the first bracket. The clamping assembly includes a first clamping member and a second clamping member that cooperate with each other. The first clamping member and the second clamping member are close to or separate from each other to clamp or release the bag opening of the packaging bag loaded with materials.

[0017] To address the technical problem of how to implement the lifting component of the bag opening correction mechanism, the present invention adopts the following technical solution, wherein the lifting component includes: The second bracket is mounted on the movable fixed frame; The second bracket is equipped with a connected motor and an electric cylinder, and the output end of the electric cylinder is mounted on the first bracket.

[0018] To solve the technical problem of how to implement the clamping components of the bag opening correction mechanism, the present invention adopts the following technical solution: the first clamping member and the second clamping member are respectively connected to the corresponding clamping drive member; The clamping drive is mounted on the third bracket, and the two ends of the third bracket are connected to the corresponding first bracket via bearing units.

[0019] To solve the technical problem of limiting the lifting component, the present invention adopts the following technical solution: an upper limit switch and a lower limit switch are set on the electric cylinder, and the limit is achieved by the limit switches; the limit switches are magnetic switches.

[0020] To solve the technical problem of damage to the packaging bag caused by direct contact between the clamping component and the bag opening, the present invention adopts the following technical solution: elastic components are provided on both the first clamping component and the second clamping component.

[0021] To address the technical problem of how to implement the guiding bag conveying mechanism, the present invention adopts the following technical solution: the guiding bag conveying mechanism is a belt guiding bag conveying mechanism, comprising: The mounting motherboard is mounted on the movable fixed frame, and the mounting motherboard is equipped with a timing belt assembly, a timing belt drive mechanism, and a timing belt opening and closing drive mechanism. The synchronous belt assembly includes two synchronous belts that turn in opposite directions for closing and clamping the packaging bag for synchronous transport. The synchronous belt drive mechanism is used to drive two synchronous belts to rotate synchronously in opposite directions. The synchronous belt opening and closing drive mechanism is used to synchronously drive the two second synchronous belts to separate or move closer together.

[0022] To solve the technical problem of how to install the synchronous belt assembly, the present invention adopts the following technical solution: a support plate is set on the mounting motherboard via a hanger and a pull plate; The support plate is rotatably equipped with a synchronous belt drive pulley and a synchronous belt driven pulley, and the synchronous belt is mounted on the synchronous belt drive pulley and the synchronous belt driven pulley; The synchronous belt drive pulley is connected to the synchronous belt drive mechanism.

[0023] To address the technical problem of how to implement a synchronous belt drive mechanism, the present invention adopts the following technical solution: the synchronous belt drive mechanism includes a first drive component and a pulley assembly disposed on the mounting motherboard. The pulley assembly includes a driving pulley, two driven tension pulleys, and a transmission belt; the driving pulley is connected to the driving component, and the transmission belt is fitted onto the driving pulley, the two driven pulleys, and the tension pulleys; the driven pulleys are connected to the synchronous belt assembly via corresponding universal couplings and bearing housing units.

[0024] To address the technical problem of how to implement a synchronous belt opening and closing drive mechanism, the present invention adopts the following technical solution, wherein the synchronous belt opening and closing drive mechanism includes: The first axis is disposed between the pull plates; The second drive unit is disposed on the mounting motherboard, and the output end of the drive unit is configured with a second shaft via a connector. A spherical plain bearing, wherein one end of the spherical plain bearing is disposed on the first shaft and the other end of the spherical plain bearing is disposed on the second shaft; The action of the second drive unit causes the two synchronous belts to close and clamp the packaging bag for transport.

[0025] To address the technical problem of timing belts becoming loose after long-term use, the present invention adopts the following technical solution: the timing belt tensioning assembly is provided on the support plate for tensioning the driven pulley of the timing belt.

[0026] To solve the technical problem of inconvenient manual control, the present invention adopts the following technical solution: the upright bag opening correction device further includes a control device that controls and connects the upgrading column mechanism, the bag opening correction mechanism, and the guiding bag conveying mechanism.

[0027] A second objective of the present invention is to provide a method for correcting the opening of a stand-up pouch, characterized in that it is implemented using the stand-up pouch opening correction device described in any of the above claims.

[0028] To address the technical problem of how to implement the bag opening correction method, the present invention adopts the following technical solution, wherein the correction method is as follows: When the conveyor detects that the packaging bag material has reached the automatic correction station at the bag opening, the guiding bag conveying mechanism and the conveyor stop after a delay. The clamping drive of the bag opening correction mechanism drives the clamping assembly to clamp the bag opening of the packaging bag at the same time, and the detection component on the lifting column mechanism determines whether the bag opening of the packaging bag is detected. When neither of the detection components on either side detects a signal from the bag opening, the lifting component of the bag opening correction mechanism drives the clamping component to move downward. When one side of the detection component triggers and detects the signal at the opening of the packaging bag, the corresponding lifting component on the same side stops operating. When the detection components on both sides trigger the signal of the bag opening, both lifting components stop operating. At this time, the bag opening is horizontal to the naked eye and the height is consistent. The clamping drive of the bag opening correction mechanism is released simultaneously, and the second drive of the guide bag conveying mechanism is activated, causing the two synchronous belts of the guide bag conveying mechanism to clamp simultaneously. The guide bag conveying mechanism and the conveyor start simultaneously, transporting the corrected packaging bag to the downstream equipment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the upright bag opening correction device of the present invention; Figure 2 This is a front view of the overall structure of the upright bag opening correction device of the present invention; Figure 3 This is a left view of the overall structure of the upright bag opening correction device of the present invention; Figure 4 This is a right view of the overall structure of the upright bag opening correction device of the present invention; Figure 5 This is a top view of the overall structure of the upright bag opening correction device of the present invention; Figure 6 This is the intention of the column lifting mechanism of the bag mouth correction device of the present invention; Figure 7 This is the installation intention of the guide bag conveying mechanism of the upright bag mouth correction device of the present invention; Figure 8 This is a schematic diagram of the bag opening correction mechanism of the bag opening correction device of the present invention; Figure label: 10 stand-up bag mouth correction device; 100 packaging bags; 200 Lifting column mechanism; 201 Chain; 202 Worm gear assembly; 203 Rocker arm; 204 Locking assembly; 205 Column body; 206 Guide assembly; 207 Moving fixing frame; 208 Detection assembly; 209 Guide shaft; 210 Triple unit; 211 Sprocket; 212 Anchor roller; 213 Base assembly; 214 Locking component; 215 Sprocket shaft; 300 Belt-guided bag conveying mechanism; 301 First drive component; 302 Mounting main board; 303 Active synchronous pulley; 304 Synchronous belt; 305 Tensioner pulley; 306 First driven synchronous pulley; 307 Second driven synchronous pulley; 308 Bearing unit; 309 Rotary shaft; 310 Second drive component; 311 Joint; 312 Spherical bearing; 313 First shaft; 314 Synchronous belt driven pulley; 315 Synchronous belt; 316 Synchronous belt tensioning assembly; 317 Support plate; 318 Pull plate; 319 Hanger; 320 Bearing housing unit; 321 Universal coupling; 322 Second shaft; 400 Bag opening correction mechanism; 401 Clamping drive component; 402 Third bracket; 403 Bearing unit; 404 First bracket; 405 Electric cylinder; 406 Motor; 407 Second bracket; 409 Correction and clamping elastic component; 410 Correction and clamping component; 500 control device. Detailed Implementation

[0030] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1 The present application will be described in detail below with reference to the accompanying drawings.

[0032] The stand-up pouch opening correction device 10 is used in a pre-made bag automatic packaging system. For example... Figure 1-5 As shown, the upright bag opening correction device 10 includes a lifting column mechanism 200, a guiding bag conveying mechanism 300, and a bag opening correction mechanism 400.

[0033] The lifting column mechanism 200 is mainly used as a fixing component for the fixed guide bag conveying mechanism 300 and the automatic bag opening correction mechanism 400. The lifting column mechanism 200 includes a column body 205, a movable fixing frame 207, and a locking assembly 204.

[0034] The movable mounting bracket 207 is mounted on the column body 205 via a transmission mechanism. Under the action of the transmission mechanism, the movable mounting bracket 207 is movable relative to the column body 205.

[0035] In one embodiment, the transmission mechanism includes a worm gear assembly 202 and a sprocket and chain assembly.

[0036] The worm gear assembly 202 is mounted on the movable fixed frame 207. The worm gear assembly 202 is preferably a worm gear reducer. A rocker arm 203 is connected to the input end of the worm gear reducer.

[0037] The sprocket and chain assembly includes a sprocket shaft 215, a sprocket 211, and a chain 201. The sprocket shaft 215 is connected to the output end of the worm gear reducer. The sprocket 211 is mounted on the sprocket shaft 215. The chain 201 is suspended on the column body 205, and the chain 201 cooperates with the sprocket 211.

[0038] In one embodiment, a guide assembly 206 is mounted on the sprocket shaft to guide the movement of the movable fixing frame. The guide assembly preferably consists of two guide wheels. The guide wheels are mounted on the sprocket shaft 215 and located on either side of the sprocket 211.

[0039] In one embodiment, locking assembly 204 is used to lock the movable fixture when it is moved to the designed position. Locking assembly 204 is preferably a locking handle.

[0040] In one embodiment, a movable component is provided at the bottom of the lifting column mechanism for moving and locking the bag opening correction device. Specifically, the movable component includes a base assembly 213, casters 212, and a locking element 214.

[0041] The upright body 205 is fixed on the base assembly 213. Casters 212 are installed at the bottom of the base assembly 213. Specifically, casters 212 are installed at the four bottom corners of the base assembly 213.

[0042] Locking element 214 is mounted on base assembly 213 for locking the base assembly when it is moved to a designed position. Locking element 214 is preferably a locking bolt.

[0043] In one embodiment, a detection component 208 is provided on the movable mounting frame for detecting the height and levelness of the packaging bag. Specifically, the detection component 208 includes a first detection component and a second detection component, which are disposed on both sides of the movable mounting frame. The heights of the first and second detection components are adjustable. The distance between the first and second detection components is also adjustable. The first and second detection components are preferably photoelectric sensors.

[0044] To make the distance between the first and second detection components adjustable, this embodiment provides guide shafts 209 on both sides of the movable fixing frame. Specifically, the guide shaft 209 includes a first guide shaft and a second guide shaft, with the first detection component slidably mounted on the first guide shaft and the second detection component slidably mounted on the second guide shaft.

[0045] Two photoelectric sensors are fixed on the guide shaft 209 and can move laterally to assist the automatic correction mechanism in confirming the height. The lateral position of the two photoelectric sensors 208 is adjusted according to the width of the bag, and the sensor height is adjustable according to the height of the bag opening to ensure that the bag opening does not trigger the photoelectric sensor when the packaging bag 100 comes from the guide bag conveying mechanism 300.

[0046] The movable mounting bracket 207 is fixed with a triplet 210 to provide an air source for the entire calibration mechanism.

[0047] The foot rollers 212 of the lifting column mechanism 200 are fixed under the base assembly 213. When movement is required, the foot rollers 212 and locking pieces 214 need to be loosened to move the entire lifting column mechanism 200. Once the position is determined, the foot rollers 212 and locking pieces 214 are locked. The column body 205 is fixed on the base assembly 213 and connected by a chain 201, sprocket 211, guide assembly 206, worm gear assembly 202, rocker arm 203 and movable fixing frame 207. By rotating the rocker arm 203, the worm gear assembly and sprocket are driven to rotate, which in turn drives the movable fixing frame 207 to move vertically on the column body 205. Once the position is reached, the locking handle 204 is locked. Please refer to Figure 1-5 , Figure 8 The automatic bag opening correction mechanism 400 is mainly used for automatically correcting the height of the bag opening after clamping it. The bag opening correction mechanism 400 is installed on the lifting column mechanism 200 and is used to clamp the bag opening of the packaging bag containing the material, and to correct the height and level of the bag opening.

[0048] The bag opening correction mechanism 400 includes a lifting assembly and a clamping assembly.

[0049] The lifting assembly is mounted on the movable fixed frame 207. In one embodiment, the lifting assembly includes a second bracket 407, a lifting drive component, and a first bracket 404. The second bracket 407 is mounted on the movable fixed frame 207. The lifting drive component, preferably a motor 406 or an electric cylinder 405, is mounted on the second bracket 407. The first bracket 404 is located at the output end of the electric cylinder 405.

[0050] In one embodiment, the electric cylinder 405 is equipped with an upper limit switch and a next limit switch, and the limit switches are used for limiting the movement. Preferably, the limit switches are magnetic switches, and the limit is achieved through magnetic switching. The motor 406 is not limited to a stepper motor, but can also be a servo motor or a DC motor, etc.

[0051] The clamping assembly is connected to the output end of the lifting assembly via the first bracket 404. The clamping assembly includes two cooperating correction clamping members 410. Preferably, the two correction clamping members 410 include a first correction clamping member and a second correction clamping member. The first clamping member and the second clamping member are close to or separate to clamp or release the bag opening of the packaging bag loaded with materials.

[0052] Specifically, the first clamping member and the second clamping member are respectively connected to the corresponding clamping drive member 401. The clamping drive member 401 is preferably a guide rod cylinder. The clamping drive member 404 is mounted on the third bracket 402, and the two ends of the third bracket 402 are connected to the corresponding first bracket 404 via bearing units 403.

[0053] In one embodiment, a corrective clamping elastic element 409 is mounted on the first clamping member. A corrective clamping elastic element 409 is also mounted on the second clamping member. Preferably, the corrective clamping elastic element 409 is made of polyurethane.

[0054] The bag opening clamping mechanism 400 is not limited to using a guide rod cylinder in conjunction with the clamping clamping member 410 and the clamping elastic member 409 to clamp the bag opening; it can also adopt a claw-type structure.

[0055] The bag opening correction mechanism 400 is fixed to the guide bag conveying mechanism 2 via the second bracket 407. The position of the automatic bag opening correction mechanism 400 is not limited to below the guide bag conveying mechanism 300, but can also be above the guide bag conveying mechanism 300.

[0056] Stepper motor 406 and electric cylinder 405 are connected to first bracket 404, and then connected to third bracket 402 through bearing unit 403. Two clamping drive components 401 are fixed on the third bracket 402. The clamping drive components 401 are then connected to correction clamping component 410 and correction clamping elastic component 409.

[0057] Please refer to Figure 1-5 , Figure 7 The guiding bag conveying mechanism 300 is installed on the lifting column mechanism 200 and is used to clamp and convey the bag openings of the packaging bags after they have been corrected by the automatic bag opening correction structure. The guiding bag conveying mechanism 300 is mainly used to clamp and convey the bag openings of packaging bags filled with materials, ensuring that the bag openings do not become skewed or wrinkled during the conveying process.

[0058] The bag guiding mechanism is a belt-guided bag guiding mechanism, including a mounting main board 302, a synchronous belt assembly, a synchronous belt drive mechanism, and a synchronous belt opening and closing drive mechanism.

[0059] The mounting motherboard 302 is installed on the mobile fixed frame 207. The timing belt assembly, timing belt drive mechanism, and timing belt opening and closing drive mechanism are installed on the mounting motherboard 302.

[0060] Specifically, two hangers 319 are mounted on the mainboard 302. A pull plate 318 is mounted on the hanger 319 via a pivot 309. A support plate 317 is mounted on the bottom of the pull plate 318. The support plate 317 is perpendicular to the pull plate 318. The support plate 317 is used to mount a synchronous belt assembly. The synchronous belt assembly includes two synchronous belts 315 with opposite directions of rotation, including a first synchronous belt and a second synchronous belt, used for closing and clamping the packaging bag for synchronous conveying. A synchronous belt drive pulley and a synchronous belt driven pulley 314 are rotatably mounted on the support plate 317, and synchronous belts 315 are mounted on the synchronous belt drive pulley and synchronous belt driven pulley 314. The two synchronous belts 315 rotate in opposite directions and have the same linear velocity.

[0061] In one embodiment, a timing belt tensioning assembly 316 is provided on the support plate 317 for tensioning the driven pulley of the timing belt.

[0062] A synchronous belt drive mechanism is used to drive two synchronous belts to rotate synchronously in opposite directions. The synchronous belt drive pulley is connected to the synchronous belt drive mechanism.

[0063] In one embodiment, the synchronous belt drive mechanism is mounted on the mounting motherboard 302. The synchronous belt drive mechanism includes a first drive member 301 and a pulley assembly. The first drive member 301 is preferably a geared motor.

[0064] The pulley assembly includes a driving synchronous pulley 303, a first driven synchronous pulley 306, a second driven synchronous pulley 307, a tension pulley 305, and a synchronous belt 304. The driving pulley 303 is connected to the first driving member 301. The synchronous belt 304 is fitted onto the driving pulley 303, the first driven synchronous pulley 306, the second driven synchronous pulley 307, and the tension pulley 305. The first driven synchronous pulley 306 is connected to the driving synchronous belt pulley of the synchronous belt assembly via a corresponding universal coupling 321 and a bearing housing unit 320. The second driven synchronous pulley 307 is connected to the driving synchronous belt pulley of the synchronous belt assembly via a corresponding universal coupling 321 and a bearing housing unit 320.

[0065] The synchronous belt opening and closing drive mechanism is used to synchronously drive the first synchronous belt and the second synchronous belt to separate or move closer together.

[0066] Specifically, the synchronous belt opening and closing drive mechanism includes a first shaft 313, a second drive component 310, a spherical bearing 312, and a second shaft 322.

[0067] The first shaft 313 is installed between two pull plates 318 on the same support plate 317.

[0068] The second drive unit 310 is installed on the mounting motherboard 302, and the output end of the second drive unit 310 is connected to the second shaft 322 via the connector 311.

[0069] One end of the spherical plain bearing 312 is mounted on the first shaft 313, and the other end is mounted on the second shaft 322. There are two spherical plain bearings 312 on the first shaft 313. The spherical plain bearings 312 on the two support plates 317 face opposite directions.

[0070] The action of the second drive component 310 causes the two synchronous belts 315 to close and clamp the packaging bag for conveying.

[0071] The first drive unit 301 of the guide bag conveying mechanism 300 is mounted on the main board 302 of the Anzuang via a flange. The active synchronous pulley 303 is mounted on the main shaft of the first drive unit 301 and is then connected to the tension pulley 305, the first driven synchronous pulley 306, and the second driven synchronous pulley 307 via a synchronous belt 304. The first driven synchronous pulley 306 and the second driven synchronous pulley 307 are connected to the universal coupling 321 via a bearing unit 308. The universal coupling then drives the four synchronous pulleys 314 and the two synchronous belts 315 to rotate synchronously via a bearing seat unit 320. The second drive unit 310 is fixed on the mounting main board 302. The second drive unit 310 drives the four pull plates 318, support plate 317, four synchronous pulleys 314, two synchronous belts 315, and synchronous belt tensioning assembly 316 to open and close together via the connector 311, spherical bearing 312, and first shaft 313. The action of the second drive unit 310 causes the two synchronous belts 315 to close and clamp the packaging bag for transport. Note that the two synchronous belts 315 transport synchronously with the same linear speed but opposite directions to ensure that the packaging bag does not wrinkle or tilt when transported synchronously.

[0072] In one embodiment, the bag opening correction device 10 further includes a control device 400, which controls the lifting column mechanism 200, the bag opening correction mechanism 400, and the guiding bag conveying mechanism 300. The control device 400 is mounted on the lifting column mechanism 200. The control device 400 includes pneumatic and electrical control, reading signals from the photoelectric sensor 208 and the magnetic limit switch on the electric cylinder, and driving the various pneumatic and electric actuators.

[0073] This invention automatically corrects the levelness error of the bag opening when it is not level before the bag enters the sealing machine after being automatically filled with materials in an automatic packaging machine, thus meeting the sealing quality requirements. The levelness difference of the bag opening is within ±1mm.

[0074] This invention addresses the issue of inconsistent bag opening heights in automatic packaging machines. Before a fully filled bag enters the sealing machine, the bag opening height fluctuates. This invention automatically corrects the bag opening height to ensure it remains in the correct position, meeting the quality requirements for sealing height. The bag opening height error is within ±1mm.

[0075] Example 2 The method for correcting the opening of the upright bag is implemented using the upright bag opening correction device of Example 1, specifically as follows: When the conveyor's photoelectric sensors detect that the packaged bag material has reached the automatic bag opening correction station, the guiding bag conveying mechanism 300 and the bottom-mounted conveyor stop after a delay. Two photoelectric sensors fixed on the lifting column mechanism 200 determine whether the bag opening has been detected. If one or both photoelectric sensors fail to detect the bag opening, it indicates that the packaged bag is tilted too much, causing one or both sides of the bag opening to be too low and not detected by the photoelectric sensors. In this case, the correction clamping component 410 may not be able to clamp the corresponding bag opening, and the system will issue an alarm, reminding manual correction. After manual correction ensures that both detection components on both sides detect the bag opening, the process continues. Alternatively, manual calibration can be performed until both bag opening heights are the same, then pressing the reset button will automatically skip the correction mechanism and directly convey the bag to the subsequent sealing equipment via the guiding bag conveying mechanism 300.

[0076] When both detection components detect the bag opening, it means that both bag openings are within the clamping position range of the clamping member 410. At this time, the clamping drive member 401 on the bag opening correction mechanism 400 simultaneously clamps the bag opening. After clamping, the motor 406 and electric cylinder 405 on the bag opening correction mechanism 400 drive the first bracket 404 and the third bracket 402, as well as the clamping drive member 401, the correction clamping member 410, and the correction clamping elastic member 409 to move downwards respectively. When the bag opening signal detected by the detection components 208 on both sides disappears, the motor 406 on the corresponding side stops running. Finally, after the bag opening signals of both detection components 208 disappear, both motors 406 stop running. The height of the detection component 208 ensures that after the two stepper motors 406 stop running, the bag opening is visually horizontal and at the same height. The last two clamping drive components 401 are released simultaneously, and the second drive component 310 of the guide bag conveying mechanism 300 is activated, causing the two synchronous belts 315 of the guide bag conveying mechanism 300 to clamp simultaneously. Finally, the motors of the guide bag conveying mechanism 300 and the bottom matching conveyor start simultaneously, conveying the calibrated packaging bag to the sealing equipment at the rear end for sealing.

[0077] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Furthermore, the contents not described in detail in this specification are all prior art known to those skilled in the art.

Claims

1. A device for correcting the opening of a vertical bag, characterized in that, include: The lifting column mechanism includes: Column body; A movable fixing frame is mounted on the column body via a transmission mechanism; under the action of the transmission mechanism, the movable fixing frame is movable relative to the column body. Locking assembly for locking the movable fixture when moved to the designed position; A bag opening correction mechanism, mounted on the lifting column mechanism, is used to clamp the bag opening of the packaging bag containing the material and to correct the height and levelness of the bag opening; the bag opening correction mechanism includes: A lifting assembly is mounted on the movable fixed frame; the lifting assembly includes a second bracket mounted on the movable fixed frame; two second brackets are provided; each second bracket is provided with a lifting drive component, and the output end of the lifting drive component is provided with a first bracket; The clamping assembly is connected to the output end of the lifting drive via a first bracket. The clamping assembly includes a first clamping member and a second clamping member that cooperate with each other. The first clamping member and the second clamping member are close to or separate to clamp or release the opening of the packaging bag loaded with materials. The first clamping member and the second clamping member are respectively connected to the corresponding clamping drive. Elastic members are provided on the first clamping member and the second clamping member. The clamping drive is mounted on the third bracket, and the two ends of the third bracket are connected to the corresponding first bracket via bearing units; The lifting drive component is equipped with an upper limit switch and a lower limit switch, and the limit switches are used to limit the movement; the limit switches are magnetic switches. A guiding bag conveying mechanism is installed on the lifting column mechanism and is used to clamp the bag opening of the packaging bag after it has been corrected by the bag opening correction mechanism and then convey it. The movable fixing frame is equipped with a detection component for detecting the height and levelness of the packaging bag; the detection component includes a first detection component and a second detection component, which are disposed on both sides of the movable fixing frame; The heights of the first detection component and the second detection component are adjustable; The distance between the first detection component and the second detection component is adjustable; The movable fixing frame is provided with a first guide shaft and a second guide shaft on both sides respectively. The first detection component is slidably arranged on the first guide shaft and the second detection component is slidably arranged on the second guide shaft.

2. The upright bag opening correction device according to claim 1, characterized in that, The transmission mechanism includes: A worm gear assembly is mounted on the movable fixed frame; a rocker arm is connected to the input end of the worm gear assembly. A sprocket and chain assembly includes a sprocket shaft, a sprocket, and a chain; the sprocket shaft is connected to the output end of the worm gear assembly; a sprocket is mounted on the sprocket shaft; the chain is suspended from the column body and cooperates with the sprocket; A guide assembly, disposed on the sprocket shaft, is used to guide the movement of the movable fixing frame.

3. The upright bag opening correction device according to claim 1, characterized in that, The bottom of the lifting column mechanism is equipped with a movable component for moving and locking the bag opening correction device.

4. The upright bag opening correction device according to claim 3, characterized in that, The moving component includes: A base assembly, wherein casters are provided at the bottom of the base assembly; A locking element, provided on the base assembly, is used to lock the base assembly when it is moved to a designed position.

5. The upright bag opening correction device according to claim 1, characterized in that, The guiding bag conveying mechanism is a belt guiding bag conveying mechanism, including: The mounting motherboard is mounted on the movable fixed frame, and the mounting motherboard is equipped with a timing belt assembly, a timing belt drive mechanism, and a timing belt opening and closing drive mechanism. The synchronous belt assembly includes two synchronous belts that turn in opposite directions for closing and clamping the packaging bag for synchronous transport. The synchronous belt drive mechanism is used to drive the two synchronous belts to rotate synchronously in opposite directions; The synchronous belt opening and closing drive mechanism is used to synchronously drive the two synchronous belts to separate or move closer together.

6. The upright bag opening correction device according to claim 5, characterized in that, A support plate is mounted on the mainboard via a hanger and a pull plate. The support plate is rotatably equipped with a synchronous belt drive pulley and a synchronous belt driven pulley, and the synchronous belt is mounted on the synchronous belt drive pulley and the synchronous belt driven pulley; The synchronous belt drive pulley is connected to the synchronous belt drive mechanism.

7. The upright bag opening correction device according to claim 5, characterized in that, The synchronous belt drive mechanism includes a first drive component and a pulley assembly disposed on the mounting motherboard: The pulley assembly includes a driving pulley, two driven belt tension pulleys, and a transmission belt; the driving pulley is connected to the first driving member, and the transmission belt is fitted onto the driving pulley and the two driven belt tension pulleys; the driven belt tension pulleys are connected to the synchronous belt assembly via corresponding universal couplings and bearing housing units.

8. The upright bag opening correction device according to claim 6, characterized in that, The synchronous belt opening and closing drive mechanism includes: The first axis is disposed between the pull plates; A second drive unit is disposed on the mounting motherboard, and the output end of the second drive unit is configured with a second shaft via a connector. A spherical plain bearing, wherein one end of the spherical plain bearing is disposed on the first shaft and the other end of the spherical plain bearing is disposed on the second shaft; The action of the second drive unit causes the two synchronous belts to close and clamp the packaging bag for transport.

9. The upright bag opening correction device according to claim 6, characterized in that, The support plate is provided with a timing belt tensioning assembly for tensioning the driven pulley of the timing belt.

10. The upright bag opening correction device according to claim 1, characterized in that, The upright bag opening correction device also includes a control device that controls and connects the lifting column mechanism, the bag opening correction mechanism, and the guiding bag conveying mechanism.

11. A method for correcting the opening of a stand-up pouch, characterized in that... This is achieved using the bag opening correction device according to any one of claims 1-10.

12. The method for correcting the opening of a stand-up pouch according to claim 11, characterized in that, The correction method is as follows: The conveyor transports packaging bags containing materials; When the conveyor detects that a bag containing material has reached the automatic correction station at the bag opening, the guiding bag conveying mechanism and the conveyor stop after a delay. The detection component on the lifting column mechanism determines whether a signal from the bag opening is detected. When at least one of the two detection components fails to detect the bag opening signal, an alarm is issued to remind manual correction. The bag opening is then manually adjusted so that both detection components detect the bag opening signal, or the bag openings on both sides are manually corrected to the same height, and then the bag opening correction mechanism is skipped and the bag is directly transported to the downstream equipment by the guide conveying mechanism. When both detection components on both sides detect the packaging bag opening signal, the clamping drive components on both sides of the bag opening correction mechanism drive the corresponding clamping components to clamp the corresponding packaging bag opening. Then, the lifting components on both sides of the bag opening correction mechanism drive the corresponding clamping components to move downward. When the signal from the opening of the packaging bag detected by the detection component on one side disappears, the lifting component on the corresponding side stops operating; When the signals detected by the detection components on both sides of the packaging bag disappear, both lifting components stop operating. At this time, the packaging bag opening is horizontal to the naked eye and the height is consistent. The clamping drive of the bag opening correction mechanism is released simultaneously, and the second drive of the guide bag conveying mechanism is activated, causing the two synchronous belts of the guide bag conveying mechanism to clamp simultaneously. The guide bag conveying mechanism and the conveyor start simultaneously, transporting the corrected packaging bag to the downstream equipment.

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