A cigarette case inner lid opening device and method

Abstract

The application discloses a cigarette case inner cover opening device and method, which comprises a side device and a cover opening mechanism. The side device is arranged on both sides of a conveying device, and the cover opening mechanism is arranged in the side devices and located on one side of the conveying device. The side device comprises a clamping plate for moving the cigarette case left and right and a push plate for moving the inner part of the cigarette case left and right. The push plate is arranged in the clamping plate. The cover opening mechanism comprises a front swing arm for embedding the front side inner cover of the cigarette case and a rear swing arm for embedding the rear side inner cover of the cigarette case. The application separates the inner cover opening function and designs it into a station, solves the problem that the cigarette case has too many opening actions in the same station, prolongs the time, improves the opening efficiency of the whole line, swings the front swing arm and the rear swing arm to open the inner cover, has a lower requirement on the installation precision compared with a vacuum suction disc structure, shortens the installation and debugging time, and reduces the installation and debugging difficulty.

Description

Technical Field

[0001] This invention relates to the field of tobacco box opening technology, and in particular to a device and method for opening the inner lid of a tobacco box. Background Technology

[0002] In the production operations of cigarette logistics and distribution centers, the cigarette box opening process must be completed before sorting cigarette cartons. Traditional cigarette box inner lid opening devices use a vacuum suction cup structure. This structure has the following problems: 1. Due to raised adhesive dots on the inner lid surface or damage to the inner lid, the suction cup cannot effectively adhere to it; 2. The vacuum suction cup structure is difficult to install and debug, requiring the suction cup's rotation center to be aligned with the inner lid's rotation center. Otherwise, a lateral force perpendicular to the suction direction can easily be generated between the suction cup and the inner lid surface, causing the suction cup to separate from the inner lid. These problems often lead to vacuum suction cup opening failures, reducing opening efficiency and increasing manual maintenance costs. Therefore, a new type of cigarette box inner lid opening device is urgently needed to solve these problems. Summary of the Invention

[0003] The purpose of this invention is to address the problem of opening failure in existing cigarette box inner lid opening devices by providing a cigarette box inner lid opening device that eliminates the impact of glue application, inner lid damage, and inaccurate installation and debugging on opening the cigarette box inner lid, thereby improving opening efficiency and reducing manual maintenance costs.

[0004] The technical solution of the present invention is as follows:

[0005] This invention discloses a cigarette box inner cover opening device, including a side-adjusting device and a cover opening mechanism. The side-adjusting device is disposed on both sides of a conveying device, and the cover opening mechanism is disposed in the side-adjusting devices on both sides and located on one side of the conveying device. The side-adjusting device includes a clamping plate that can move the cigarette box left and right, and a push plate that can move some cigarettes inside the cigarette box left and right, the push plate being disposed within the clamping plate. The cover opening mechanism includes a front swing arm that can be embedded in the front inner cover of the cigarette box and a rear swing arm that can be embedded in the rear inner cover of the cigarette box.

[0006] The above structure, through the clamping plate in the side device that allows the cigarette box to move left and right, and the push plate that allows some cigarette packs inside the cigarette box to move left and right, pushes out a small number of cigarette packs to the left. The pushed-out cigarette packs open the inner cover of the left cigarette box by a small angle, creating conditions for the front swing arm 405 and the rear swing arm 408 to be inserted into the inner cover. Then, the inner cover is opened by more than 90 degrees by the front swing arm inserting into the front inner cover of the cigarette box and swinging counterclockwise from a low position to a high position, and the rear swing arm inserting into the rear inner cover of the cigarette box and swinging clockwise from a low position to a high position. The inner cover is opened by swinging the front and rear swing arms. Compared with the vacuum suction cup structure, the installation accuracy requirements are lower, the installation and debugging time is shortened, and the installation and debugging difficulty is reduced.

[0007] Furthermore, it also includes a clamping device installed at the upper end of the conveying device. The clamping device includes: a lifting bracket, clamping lifting cylinders connected to both ends of the lifting bracket, a height measuring cylinder connected to the lifting bracket, a pressure plate connected to the bottom push head of the height measuring cylinder, and a front clamping plate and a rear clamping plate installed on the lifting bracket through a top guide rail pair; a centering cylinder is installed at the middle position of the top of the lifting bracket, a floating joint is connected between the front clamping plate and the centering cylinder, rollers are installed at the front and rear ends of the lifting bracket, and the rollers, the front clamping plate and the rear clamping plate are connected by two sections of steel wire rope to form a closed loop.

[0008] The above structure uses a wire rope synchronous clamping structure, which has a larger and more flexible clamping stroke and lower cost compared to the traditional cylinder clamping structure.

[0009] Furthermore, the clamping device is equipped with a height measuring wire encoder, a width measuring wire encoder, and an inner cover detection device. One end of the height measuring wire encoder is connected to the lifting bracket, and the other end is connected to the pressure plate. The two ends of the width measuring wire encoder are connected to the front clamping plate and the rear clamping plate, respectively. The inner cover detection device is located on the outside of the front clamping plate and the rear clamping plate and is used to detect whether the inner cover on the side of the cigarette box has been successfully opened.

[0010] The above structure utilizes a height-measuring wire encoder and a width-measuring wire encoder to simultaneously measure the width and height of the tobacco box during the centering and height measurement steps, eliminating the need for separate measurements and simplifying the process and structure.

[0011] Furthermore, the clamping plates on the edge-adjusting device include a left clamping plate and a right clamping plate, which are respectively mounted on the left support and the right support. The left support and the right support are mounted on the frame via bottom guide rails. A through hole is provided in the middle of the left clamping plate and the right clamping plate, respectively for mounting the left push plate and the right push plate. A left push smoke cylinder is connected to the left side of the left push plate, and a right push smoke cylinder is connected to the right side of the right push plate. A positioning detection device is provided at the bottom of the left push smoke cylinder.

[0012] Furthermore, four cylinders are arranged below the bottom guide rail pair: a left first-stage cylinder, a left second-stage cylinder, a right first-stage cylinder, and a right second-stage cylinder. The tail ends of the left first-stage cylinder and the left second-stage cylinder are connected by a connector to form the first group, and the tail ends of the right first-stage cylinder and the right second-stage cylinder are connected by a connector to form the second group. The two groups of cylinders are arranged at the same height in an alternating and opposite manner. The left side of the first group of cylinders is connected to the left bracket through a movable end support, and the right side is connected to the frame through a fixed end support. The right side of the second group of cylinders is connected to the right bracket through a movable end support, and the left side is connected to the frame through a fixed end support.

[0013] Furthermore, the opening mechanism also includes: a mounting plate connected to the frame, two opening cylinders arranged in opposite directions in the same straight line on the upper side of the mounting plate, the tail end of the opening cylinders being hinged to the support, and the head end of the opening cylinders being hinged to the front swing arm and the rear swing arm respectively through a joint bearing, the front swing arm and the rear swing arm being mounted on both ends of the mounting plate through the front support and the rear support respectively, and a guard plate being provided on the right side of the front swing arm and the rear swing arm for protecting the left-side components and supporting the left lower cover of the cigarette box.

[0014] Furthermore, it also includes a movable guardrail located on the top left side of the frame and a fixed guardrail located on the top right side of the frame. The movable guardrail includes a first bracket connected to the frame, a guardrail cylinder connected to the bottom of the first bracket, and a movable guard plate connected to the push head of the guardrail cylinder to support the left upper cover of the tobacco box. The fixed guardrail includes a second bracket connected to the frame, and a guard plate connected to the bottom of the second bracket to support the right upper cover of the tobacco box.

[0015] This invention also discloses a method for opening the inner lid of a cigarette box, comprising the following specific steps:

[0016] Step 1: When the positioning detection device is not triggered, the baffle cylinder extends, the baffle rises, and the inner cover opening device of the cigarette box is ready for cigarette box input. The system provides a signal to the conveying device to start conveying the cigarette box. When the cigarette box is conveyed to the positioning detection device, a signal is provided to stop the conveying device, the baffle cylinder retracts, and the baffle moves down to the low position.

[0017] Step 2: The right clamping plate performs the action of pushing the tobacco box, pushing the tobacco box to the left until it is blocked by the left clamping plate, pushing the tobacco box from the center position to the left reference position, completing the side clamping;

[0018] Step 3: The front clamping plate moves backward, pushing the smoke box backward, and at the same time driving the wire rope to rotate clockwise, simultaneously driving the rear clamping plate to move forward at the same distance until it is blocked by the smoke box, thus clamping the smoke box from the position near the baffle to the position centered in the front and back direction of the conveying.

[0019] Step 4: The pressure plate moves down, simultaneously causing the height measuring wire encoder to extend until the pressure plate stops after pressing down into the smoke box. The height measuring wire encoder then feeds back the corresponding change signal to the system to obtain the height of the smoke box.

[0020] Step 5: Push the right side of the smoke cylinder to extend, and push the right push plate to push a small amount of cigarettes to the left. The cigarettes push out will open the inner cover of the left side of the smoke box by a small angle. The front swing arm is inserted into the inner cover of the front side of the smoke box and swings counterclockwise from the low position to the high position. Simultaneously, the rear swing arm is inserted into the inner cover of the rear side of the smoke box and swings clockwise from the low position to the high position, opening the inner cover of the left side of the smoke box by more than 10 degrees, thus completing the opening of the inner cover.

[0021] Step Six: All components controlled by the cylinder are reset, the smoke box is ready to output, and the smoke box output is completed.

[0022] Furthermore, in step four, the system determines the height of the smoke box based on the height of the smoke box. If it is a low smoke box, the movable guard plate meets the support requirements of the smoke box cover at the low position, so the guardrail cylinder does not move and remains extended. If it is a high smoke box, the movable guard plate does not meet the support requirements of the smoke box cover at the low position, so the guardrail cylinder begins to retract, causing the movable guard plate to move up to the high position.

[0023] Furthermore, the specific operation method of step five includes:

[0024] S50: Push the right smoke cylinder to extend, and the right push plate will push a small amount of cigarettes to the left. The cigarettes pushed out will open the inner cover of the left smoke box by a small angle.

[0025] S51: The left secondary cylinder extends, causing the left clamping plate to move to the maximum stroke position. Simultaneously, the right pusher cylinder retracts, causing the right pusher plate to move to the right and become flush with the right clamping plate.

[0026] S52: The opening cylinder retracts, the front swing arm inserts into the front inner cover of the tobacco box and swings counterclockwise from the low position to the high position. Simultaneously, the rear swing arm inserts into the rear inner cover of the tobacco box and swings clockwise from the low position to the high position. At this time, the inner cover detection device is triggered, and the opening is successful. The two swing arms open the left inner cover of the tobacco box by more than 10 degrees and act as a protective plate to support the left inner cover to keep it open. If the inner cover detection device is not triggered, the opening fails. The front and rear swing arms repeat the above opening action once. If the inner cover detection device is still not triggered, the fault needs to be handled manually.

[0027] S53: The right first-stage cylinder retracts, causing the right clamping plate to move to the left and contact the smoke box;

[0028] S54: The left first-stage cylinder and the left second-stage cylinder retract, causing the left clamping plate to move to the right to its maximum stroke position, folding the already opened left inner cover to a larger angle, while simultaneously aligning the cigarette packs pushed out on the left side. The right second-stage cylinder retracts, clamping the cigarette box to the side for the second time.

[0029] S55: The left first-stage cylinder and the right first-stage cylinder extend simultaneously, so that the left clamping plate and the right clamping plate are separated from the smoke box by a certain distance;

[0030] S56: The cover-opening cylinder extends, the front swing arm swings clockwise from the high position to the low position, and simultaneously, the rear swing arm swings counterclockwise from the high position to the low position.

[0031] S57: The left pusher extends the smoke cylinder, driving the left pusher plate to push a small amount of cigarettes to the right. The right side of the cigarette box inner cover is opened by the pushed-out cigarettes at an angle of less than 10 degrees.

[0032] S58: Push the left exhaust cylinder back, so that the left push plate moves to the left and is flush with the left clamping plate.

[0033] Compared with existing technologies, the advantages of this invention are:

[0034] 1. This invention opens the inner cover by swinging the front and rear swing arms. Compared with the vacuum suction cup structure, it has lower requirements for installation accuracy, shortens the installation and debugging time, and reduces the difficulty of installation and debugging.

[0035] 2. The width and height values ​​of the smoke box required by the downstream equipment of the present invention are measured simultaneously in the smoke box centering and smoke box height measurement steps of the present invention, eliminating the need for separate measurement and simplifying the process and structure.

[0036] 3. Compared with the traditional device that integrates opening the inner cover and pushing the cigarettes into the same station, this device separates the function of opening the inner cover into a separate station, which solves the problem of excessive time consumption caused by multiple opening actions of the cigarette box in the same station, and improves the opening efficiency of the entire line.

[0037] 4. The present invention adopts a steel wire rope synchronous clamping structure, which has a larger and more flexible clamping stroke and lower cost compared with the traditional cylinder clamping structure.

[0038] 5. In addition to opening the left inner cover, this invention also opens the right inner cover at a small angle to reduce the resistance required for downstream equipment to push smoke. Attached Figure Description

[0039] Figure 1 This is the front view of the present invention;

[0040] Figure 2 This is the left view of the present invention;

[0041] Figure 3 This is a front view of the clamping device in this invention;

[0042] Figure 4 This is a left-side sectional view of the clamping device removing the clamping lifting cylinder in the present invention.

[0043] Figure 5 This is a front view of the edge-aligning device in this invention;

[0044] Figure 6 This is a top sectional view of the side-mounted device in this invention;

[0045] Figure 7 This is a front view of the lid-opening mechanism in this invention;

[0046] Figure 8 This is a left view of the lid-opening mechanism in this invention;

[0047] Figure 9 This is a front view of the conveying device in this invention;

[0048] Figure 10 This is a left-side sectional view of the conveying device in this invention;

[0049] Figure 11 This is a front view of the movable guardrail and the fixed guardrail in this invention;

[0050] Figure 12 This is a flowchart of the control process for the inner cover opening device of the cigarette box in this invention;

[0051] Figure 13 This is a schematic diagram of the pneumatic circuit of the cigarette box inner cover opening device in this invention;

[0052] Reference numerals: 1-Frame, 2-Clamping device, 201-Lifting bracket, 202-Clamping lifting cylinder, 203-Height measuring cylinder, 204-Pressure plate, 205-Height measuring wire encoder, 206-Front clamping plate, 207-Rear clamping plate, 208-Top guide rail pair, 209-Width measuring wire encoder, 210-Centering cylinder, 211-Connecting support, 212-Floating joint, 213-Roller, 214-Wire rope, 215-Rubber plate, 216-Inner cover detection device, 3-Support Side device, 301-Guide rail pair, 302-Left bracket, 303-Right bracket, 304-Moving end support, 305-Left push smoke cylinder, 306-Right push smoke cylinder, 307-Left clamping plate, 308-Right clamping plate, 309-Left push plate, 310-Right push plate, 311-Left primary cylinder, 312-Left secondary cylinder, 313-Right primary cylinder, 314-Right secondary cylinder, 315-Connecting piece, 316-Spherical bearing, 317-Fixed end support, 318-Position detection device. 4-Opening mechanism, 401-Mounting plate, 402-Opening cylinder, 403-Support, 404-Spherical bearing, 405-Front swing arm, 406-Front support, 407-Rear support, 408-Rear swing arm, 409-Guard plate, 5-Conveying device, 501-Frame, 502-Support rod, 503-Guard plate, 504-Roller, 505-Baffle, 506-Electric drum, 507-First connecting plate, 508-Second connecting plate, 509-First transmission belt, 510-Second transmission belt 511-Baffle cylinder, 512-Third connecting plate, 6-Modible guardrail, 601-First bracket, 602-Guardrail cylinder, 603-Modible guardrail, 7-Fixed guardrail, 701-Second bracket, 702-Guardrail for supporting the right side upper cover of the tobacco box, 801-Residual pressure release valve, 802-Filter pressure reducing valve, 803-Pressure regulating valve, 804-Two-position five-way dual-electric solenoid valve, 805-Three-position five-way dual-electric solenoid valve, 806-One-way throttle valve, 807-Two-position five-way single-electric solenoid valve. Detailed Implementation

[0053] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] The technical solution of the present invention will be further described in detail below with reference to the embodiments.

[0055] like Figure 1-11 As shown, a cigarette box inner cover opening device includes: a frame 1, a clamping device 2 at the top of the frame 1, a side-adjusting device 3 at the bottom of the frame 1, an opening mechanism 4 at the bottom left of the frame 1, a conveying device 5 at the bottom middle of the frame 1, a movable guardrail 6 at the top left of the frame 1, and a fixed guardrail 7 at the top right of the frame 1. The side-adjusting device 3 includes a clamping plate that allows the cigarette box to move left and right, and a push plate that allows the cigarette packs inside the cigarette box to move left and right. The push plate is disposed inside the clamping plate. The opening mechanism 4 includes a front swing arm 405 that can be embedded in the front inner cover of the cigarette box and a rear swing arm 408 that can be embedded in the rear inner cover of the cigarette box.

[0056] Specifically, the clamping device 2 includes: a lifting bracket 201, clamping lifting cylinders 202 connected to both ends of the lifting bracket 201, the push head of the clamping lifting cylinder 202 connected to the top of the frame 1, a height measuring cylinder 203 connected to the lifting bracket 201, a pressure plate 204 connected to the bottom push head of the height measuring cylinder 203, and a front clamping plate 206 and a rear clamping plate 207 set on the lifting bracket 201 via a top guide rail pair 208. The front clamping plate 206 and the rear clamping plate 207 are respectively connected to both ends of the top guide rail pair 208. The top guide rail pair 208 is set in two sets and is symmetrically distributed on the lower side of the lifting bracket 201, so that the front clamping plate 206 and the rear clamping plate 207 have good stability when moving horizontally. The front clamping plate 206 and the rear clamping plate 207 have multiple through holes to reduce weight; a centering cylinder 210 is provided at the top center of the lifting bracket 201, and a connecting support 211 is provided at the bottom of the centering cylinder 210 to connect the lifting bracket 201 and the centering cylinder 210. A floating joint 212 is connected between the front clamping plate 206 and the centering cylinder 210 to reduce the influence of the error size on the movement of the centering cylinder 210. Rollers 213 are installed at both ends of the lifting bracket 201. The rollers 213, the front clamping plate 206 and the rear clamping plate 207 are connected by two sections of steel wire rope 214 to form a closed loop. Rubber plates 215 are connected to the inner sides of the front clamping plate 206 and the rear clamping plate 207 to increase the friction when clamping the cigarette box. The clamping device 2 is equipped with a height measuring wire encoder 205, a width measuring wire encoder 209 and an inner cover detection device 216. One end of the height measuring wire encoder 205 is connected to the lifting bracket 201 and the other end is connected to the pressure plate 204. The two ends of the width measuring wire encoder 209 are connected to the front clamping plate 206 and the rear clamping plate 207 respectively. The inner cover detection device 216 is located on the outside of the front clamping plate 206 and the rear clamping plate 207 to detect whether the inner cover on the side of the cigarette box has been successfully opened.

[0057] Specifically, the clamping plates on the edge-mounting device 3 include a left clamping plate 307 and a right clamping plate 308. The left clamping plate 307 and the right clamping plate 308 are respectively mounted on the left support 302 and the right support 303. The left support 302 and the right support 303 are mounted on the frame 1 via a bottom guide rail pair 301. A through hole is provided in the middle of the left clamping plate 307 and the right clamping plate 308, for mounting the left push plate 309 and the right push plate 310, respectively. A left push smoke cylinder 305 is connected to the left side of the left push plate 309, and a right push smoke cylinder 306 is connected to the right side of the right push plate 310. A positioning detection device 318 is provided at the bottom of the left push smoke cylinder 305. When the left push smoke cylinder 305 is retracted, the left push plate 309 is flush with the surface of the left clamping plate 307 and moves synchronously. When the right push smoke cylinder 306 is retracted, the right push plate 309... The push plate 310 and the right clamping plate 308 are flush and move synchronously. Four cylinders are arranged below the bottom guide rail pair 301: left first-stage cylinder 311, left second-stage cylinder 312, right first-stage cylinder 313, and right second-stage cylinder 314. The tail ends of the left first-stage cylinder 311 and the left second-stage cylinder 312 are connected by connector 315 to form the first group, and the tail ends of the right first-stage cylinder 313 and the right second-stage cylinder 314 are connected by connector 315 to form the second group. The two groups of cylinders are arranged at the same height and in opposite directions. The left side of the first group of cylinders is connected to the left bracket 302 through the movable end support 304, and the right side is connected to the frame 1 through the fixed end support 317. The right side of the second group of cylinders is connected to the right bracket 303 through the movable end support 304, and the left side is connected to the frame 1 through the fixed end support 317.

[0058] Specifically, the cover opening mechanism 4 includes: a mounting plate 401 connected to the frame 1; two cover opening cylinders 402 are provided on the upper side of the mounting plate 401; the two cover opening cylinders 402 are arranged in opposite directions in the same straight line; the tail end of the cover opening cylinder 402 is hinged to the support 403; the head end is hinged to the front swing arm 405 through a joint bearing 404; the front support 406 and the rear support 407 are provided at both ends of the mounting plate 401; the bottom of the front support 406 is connected to the mounting plate 401; the top of the front support 406 is hinged to the front swing arm 405; the rear swing arm 408 is symmetrically arranged with the same structure as the front swing arm 405; and the guard plate 409 is provided on the right side of the front swing arm 405 and the rear swing arm 408 to protect the left-side components and support the left lower cover of the cigarette box.

[0059] Specifically, the conveying device 5 includes: a frame 501 connected to the frame 1; two frames 501 are connected as one unit by a support rod 502; a guard plate 503 is installed on both outer sides of the frame 501, with the same length as the frame 501, for supporting the lower covers on both sides of the tobacco box and preventing the lower covers of the tobacco box from rubbing against the top of the frame 501; multiple rollers 504 are arranged between the two frames 501, with both ends of the rollers 504 connected to the top of the frame 501 and the middle position used for transmission connection; an electric roller 506 is arranged at the bottom of the frame 501, and the electric roller 506 is connected to the frame 1 through a first connecting plate 507 and a second connecting plate 508; the rollers 504 and the electric roller 506 are connected to a transmission group through a first transmission belt 509 and a second transmission belt 510; a baffle cylinder 511 is arranged near the discharge end of the frame 501 and is connected to the frame 501 through a third connecting plate 512; and a top pusher is connected to a baffle 505 for blocking the tobacco box.

[0060] Specifically, the movable guardrail 6 includes: a first bracket 601 connected to the frame 1, a guardrail cylinder 602 connected to the bottom of the first bracket 601, and a movable guard plate 603 connected to the push head of the guardrail cylinder 602 for supporting the upper cover on the left side of the cigarette box.

[0061] Specifically, the fixed guardrail 7 includes: a second bracket 701 connected to the frame 1 for supporting the upper right cover of the cigarette box; a guard plate 702 connected to the bottom of the second bracket 701 for supporting the upper right cover of the cigarette box.

[0062] Initial state before the smoke box enters: Clamping lifting cylinder 202 and height measuring cylinder 203 retract, centering cylinder 210 extends, left smoke pushing cylinder 305 and right smoke pushing cylinder 306 retract, left first-stage cylinder 311, left second-stage cylinder 312, right first-stage cylinder 313 and right second-stage cylinder 314 extend, cover opening cylinder 402 extends, baffle cylinder 511 extends, guardrail cylinder 602 extends, the upper and lower covers on both sides of the smoke box are opened to more than 90 degrees, the inner covers on both sides are not opened, and it is being conveyed in the center.

[0063] like Figure 12 As shown, the working process of this device includes the following steps:

[0064] Step 1: Control the input of the smoke box by triggering the position detection device 318.

[0065] Step 2: Push the cigarette box from the center position to the left-side reference position to complete the side clamping.

[0066] Step 3: Push the cigarette box from the position near the front side baffle 505 to the position centered at the front and back, completing the centered clamping.

[0067] Step 4: Measure the height of the tobacco box by using the feedback value from the wire encoder to complete the tobacco box height measurement.

[0068] Step 5: Open the inner cover on the left side of the cigarette box to more than 90 degrees to complete opening the inner cover.

[0069] Step Six: All components controlled by the cylinder are reset, the smoke box is ready to output, and the smoke box output is completed.

[0070] Specifically, step one includes:

[0071] S10: The positioning detection device 318 is not triggered, the baffle cylinder 511 extends, the baffle 505 rises, the inner cover opening device of this cigarette box is ready for cigarette box input, and the system provides a signal to the conveying device 5 to start conveying the cigarette box.

[0072] S11: The cigarette box is conveyed to the trigger position detection device 318. After a delay, the position detection device 318 provides a signal to stop the conveying device 5 (the purpose of the delayed conveying is to ensure that the cigarette box can be conveyed to the position of the baffle 505).

[0073] S12: Baffle cylinder 511 retracts, and baffle 505 moves down to a low position.

[0074] Step two specifically includes:

[0075] S20: The left first-stage cylinder 311 and the left second-stage cylinder 312 retract, and the left clamping plate 307 moves to the right to the maximum stroke position as a reference for the side;

[0076] S21: The right first-stage cylinder 313 retracts, and the right second-stage cylinder 314 retracts (the right second-stage cylinder 314 retracts for a fixed duration, which meets the time required for the smallest size tobacco box to be placed to the side), which drives the right clamping plate 308 to perform the tobacco box pushing action, pushing the tobacco box to the left until it is blocked by the left clamping plate 307, pushing the tobacco box from the left-right center position to the left-side reference position;

[0077] S22: The left first-stage cylinder 311 and the right first-stage cylinder 313 extend simultaneously, causing the left clamping plate 307 to move to the left and the right clamping plate 308 to move to the right, creating a certain distance between them and the tobacco box (to avoid friction between the tobacco box and the left clamping plate 307 and the right clamping plate 308 when the tobacco box is centered later. In addition, the left clamping plate 307 acts as a protective plate to prevent the cigarette packs from being pushed to the left and scattering when the inner cover of the tobacco box is opened later).

[0078] Step three specifically includes:

[0079] S30: Clamping lifting cylinder 202 extends, clamping device 2 descends;

[0080] S31: Centering cylinder 210 retracts (centering cylinder 210 retracts after a fixed time, which is sufficient for the minimum size smoke box to be centered front and back). Front clamping plate 206 moves backward, pushing the smoke box backward, and at the same time driving wire rope 214 to rotate clockwise, simultaneously driving rear clamping plate 207 to move forward at an equal distance until it is blocked by the smoke box. The smoke box is clamped from the position near baffle 505 to the position centered front and back in the conveying direction (at this time, front clamping plate 206 and rear clamping plate 207 cannot be opened yet, as they act as protective plates to prevent the smoke box from tilting in subsequent steps).

[0081] Step four specifically includes:

[0082] S40: The height measuring cylinder 203 extends (the height measuring cylinder 203 extends for a fixed duration, which meets the time required for measuring the height of the smallest tobacco box), the pressure plate 204 moves down, and at the same time drives the height measuring wire encoder 205 to extend until the pressure plate 204 presses down into the tobacco box and stops. The height measuring wire encoder 205 feeds back the corresponding change signal to the system to obtain the height of the tobacco box.

[0083] S41: The system determines the height of the tobacco box based on its height. If it's a low-height tobacco box, the movable guard plate 603 in its low position meets the support requirements for the tobacco box cover, so the guardrail cylinder 602 remains extended and does not move. If it's a high-height tobacco box, the movable guard plate 603 in its low position does not meet the support requirements for the tobacco box cover, so the guardrail cylinder 602 begins to retract, causing the movable guard plate 603 to move to its high position. (By moving the movable guard plate up and down, interference between the tobacco boxes of different heights and the guardrail is avoided when opening the inner cover, while also adapting to the support requirements for the cover of tobacco boxes of different heights.)

[0084] Step five specifically includes:

[0085] S50: The right pusher extends the smoke cylinder 306, and the right pusher plate 310 pushes out a small amount of cigarettes to the left. The cigarettes push out open the inner cover of the left smoke box by a small angle (creating conditions for the front swing arm 405 and the rear swing arm 408 to be embedded in the inner cover).

[0086] S51: The left secondary cylinder 312 extends, causing the left clamping plate 307 to move to the maximum stroke position (leaving space for the subsequent opening of the left inner cover). Simultaneously, the right push smoke cylinder 306 retracts, causing the right push plate 310 to move to the right and become flush with the right clamping plate 308.

[0087] S52: The opening cylinder 402 retracts, the front swing arm 405 inserts into the inner cover of the front side of the tobacco box and swings counterclockwise from the low position to the high position. Simultaneously, the rear swing arm 408 inserts into the inner cover of the rear side of the tobacco box and swings clockwise from the low position to the high position. At this time, the inner cover detection device 216 is triggered, and the opening is successful. The two swing arms open the inner cover of the left side of the tobacco box by more than 90 degrees and act as a protective plate to keep the inner cover of the left side open. If the inner cover detection device 216 is not triggered, the opening fails. The front swing arm 405 and the rear swing arm 408 repeat the above opening action once. If the inner cover detection device 216 is still not triggered, the fault needs to be handled manually.

[0088] S53: The right first-stage cylinder 313 retracts, causing the right clamping plate 308 to move to the left and contact the tobacco box (the right clamping plate 308 acts as a protective plate at this time to prevent the subsequent cigarette packs from scattering when they are aligned).

[0089] S54: The left first-stage cylinder 311 and the left second-stage cylinder 312 retract, causing the left clamping plate 307 to move to the right to its maximum stroke position, folding the already opened left inner cover to a larger angle, and at the same time aligning the cigarette packs pushed out on the left. The right second-stage cylinder 314 retracts, clamping the cigarette box to the side for the second time.

[0090] S55: The left first-stage cylinder 311 and the right first-stage cylinder 313 extend simultaneously, causing the left clamping plate 307 and the right clamping plate 308 to be separated from the cigarette box by a certain distance (in preparation for pushing the cigarette pack from the left side; in addition, at this time, the left clamping plate 307 acts as a protective plate to support the left inner cover and keep it in the open state).

[0091] S56: The cover-opening cylinder 402 extends, the front swing arm 405 swings clockwise from the high position to the low position, and simultaneously, the rear swing arm 408 swings counterclockwise from the high position to the low position.

[0092] S57: The left pusher cylinder 305 extends, driving the left pusher plate 309 to push a small amount of cigarettes to the right. The inner cover of the right cigarette box is opened by the pushed-out cigarettes at an angle of less than 90 degrees (the purpose of opening the inner cover on the right side is to reduce the resistance required when the downstream equipment pushes out the cigarettes from left to right).

[0093] S58: The left pusher cylinder 305 retracts, causing the left pusher plate 309 to move to the left and become flush with the left clamping plate 307.

[0094] Step six specifically includes:

[0095] S60: Clamping lifting cylinder 202 retracts, clamping device 2 rises;

[0096] Simultaneously, the left secondary cylinder 312 and the right secondary cylinder 314 extend, and the left clamping plate 307 and the right clamping plate 308 return to their initial positions at the maximum distance from the tobacco box.

[0097] Simultaneously, the center cylinder 210 extends, and similarly, the front clamping plate 206 moves forward and the rear clamping plate 207 moves backward by an equal distance until it opens to the maximum stroke position, while the width measuring wire encoder 209 retracts back to the initial position.

[0098] Simultaneously, the height measuring cylinder 203 retracts, the pressure plate 204 moves up to the maximum stroke position, and the height measuring wire encoder 205 retracts to the initial position.

[0099] S61: The smoke box is ready for output and can begin conveying;

[0100] S62: When the cigarette box exceeds the detection range of the positioning detection device 318, the positioning detection device 318 changes from being triggered to not being triggered. After a delay, the positioning detection device 318 provides a signal to stop the conveying device 5 (the purpose of the delayed conveying is to ensure that the cigarette box has completely left the device). Simultaneously, the baffle cylinder 511 extends, the baffle 505 moves up to the high position, and the guardrail cylinder 602 resets back to the initial state.

[0101] At this point, all cylinders in the device return to their initial state, waiting for the next smoke box to enter before repeating the above process.

[0102] like Figure 13 The pneumatic circuit structure of this device is described below:

[0103] A residual pressure relief valve 801 is installed at the air inlet, followed by a filter pressure reducing valve 802. The air path then splits into two branches, each equipped with a pressure regulating valve 803. This allows for separate and individual adjustment of the gas pressure, ensuring that the cylinder pressure of the right primary cylinder 313 and right secondary cylinder 314 is lower than that of the left primary cylinder 311 and left secondary cylinder 312. This guarantees that the left-side alignment reference will not be altered by the right-side cylinder when the tobacco box is moved to the side. The clamping and lifting cylinder 202 is equipped with a one-way throttle valve 806, allowing for synchronization of the lifting and lowering of the two cylinders by adjusting the gas flow rate. The left and right push-to-push cylinders 305 and 306 are also equipped with one-way throttle valves 806, allowing for control of the pushing speed by adjusting the gas flow rate to prevent the tobacco strips from scattering. The right secondary cylinder 314 is also equipped with a one-way throttle valve 806, allowing for control of the pushing speed by adjusting the gas flow rate to prevent the tobacco box from tipping over. The height measuring cylinder 203, centering cylinder 210, and right secondary cylinder 314 are controlled by a three-position five-way dual-electro-controlled solenoid valve 805 to ensure that the cylinder can stop at any position during its stroke. The clamping and lifting cylinder 202 is equipped with a two-position five-way dual-electro-controlled solenoid valve 804 to ensure that the clamping and lifting cylinder 202 is self-locking when the power is off, preventing the clamping device 2 from performing the lifting or lowering action when only air is supplied and not powered, making it safer to use. The remaining cylinders are controlled by a two-position five-way single-electro-controlled solenoid valve 807.

[0104] The specific embodiments described in this application are quite detailed, but they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A device for opening the inner lid of a cigarette box, characterized in that, The device includes a side-mounting device (3) and a cover-opening mechanism (4). The side-mounting device (3) is located on both sides of the conveying device (5), and the cover-opening mechanism (4) is located in the side-mounting devices on both sides and on one side of the conveying device (5). The side-mounting device (3) includes a clamping plate that allows the cigarette box to move left and right, and a push plate that allows some cigarettes inside the cigarette box to move left and right. The push plate is located inside the clamping plate. The cover-opening mechanism (4) includes a front swing arm (405) that can be embedded in the inner cover of the front side of the cigarette box and a rear swing arm (408) that can be embedded in the inner cover of the rear side of the cigarette box. It also includes a clamping device (2) installed at the upper end of the conveying device (5). The clamping device (2) includes: a lifting bracket (201), a clamping lifting cylinder (202) connected to both ends of the lifting bracket (201), a height measuring cylinder (203) connected to the lifting bracket (201), a pressure plate (204) connected to the bottom push head of the height measuring cylinder (203), and a front clamping plate (206) and a rear clamping plate (207) installed on the lifting bracket (201) through a top guide rail pair (208); a centering cylinder (210) is installed at the middle position of the top of the lifting bracket (201), a floating joint (212) is connected between the front clamping plate (206) and the centering cylinder (210), and rollers (213) are installed at the front and rear ends of the lifting bracket (201). The rollers (213), the front clamping plate (206) and the rear clamping plate (207) are connected by two sections of steel wire rope (214) to form a closed loop. It also includes a movable guardrail (6) set on the top left side of the frame (1) and a fixed guardrail (7) set on the top right side of the frame (1). The movable guardrail (6) includes a first bracket (601) connected to the frame (1), a guardrail cylinder (602) connected to the bottom of the first bracket (601), and a movable guard plate (603) connected to the push head of the guardrail cylinder (602) for supporting the left side upper cover of the cigarette box. The fixed guardrail (7) includes a second bracket (701) connected to the frame (1), and a guard plate (702) for supporting the right side upper cover of the cigarette box connected to the bottom of the second bracket (701) for supporting the right side upper cover of the cigarette box. The conveying device (5) includes: a frame connected to the frame, two frames connected together by a strut, a guard plate installed on both sides of the frame with the same length as the frame, multiple rollers between the two frames, the two ends of the rollers connected to the top of the frame, the middle position used for transmission connection, an electric roller installed at the bottom of the frame, the electric roller connected to the frame through a first connecting plate and a second connecting plate, the rollers and the electric roller connected to a transmission group through a first transmission belt and a second transmission belt, a baffle cylinder located near the discharge end of the frame, connected to the frame through a third connecting plate, and a top pusher connected to the baffle.

2. The tobacco box inner cover opening device according to claim 1, characterized in that, The clamping device (2) is equipped with a height measuring wire encoder (205), a width measuring wire encoder (209), and an inner cover detection device (216). One end of the height measuring wire encoder (205) is connected to the lifting bracket (201), and the other end is connected to the pressure plate (204). The two ends of the width measuring wire encoder (209) are connected to the front clamping plate (206) and the rear clamping plate (207) respectively. The inner cover detection device (216) is set on the outside of the front clamping plate (206) and the rear clamping plate (207) to detect whether the inner cover on the side of the cigarette box has been successfully opened.

3. The tobacco box inner cover opening device according to claim 2, characterized in that, The clamping plates on the edge-adjusting device (3) include a left clamping plate (307) and a right clamping plate (308). The left clamping plate (307) and the right clamping plate (308) are respectively mounted on the left support (302) and the right support (303). The left support (302) and the right support (303) are mounted on the frame (1) through the bottom guide rail pair (301). A through hole is provided in the middle of the left clamping plate (307) and the right clamping plate (308) for mounting the left push plate (309) and the right push plate (310) respectively. The left push plate (309) is connected to the left push smoke cylinder (305) on the left side, and the right push plate (310) is connected to the right push smoke cylinder (306) on the right side. The left push smoke cylinder (305) is provided with a positioning detection device (318) at the bottom.

4. The tobacco box inner cover opening device according to claim 3, characterized in that, Below the bottom guide rail pair (301), there are four cylinders: a left first-stage cylinder (311), a left second-stage cylinder (312), a right first-stage cylinder (313), and a right second-stage cylinder (314). The tail ends of the left first-stage cylinder (311) and the left second-stage cylinder (312) are connected by a connector (315) to form the first group. The tail ends of the right first-stage cylinder (313) and the right second-stage cylinder (314) are connected by a connector (315) to form the second group. The two groups of cylinders are arranged at the same height in an alternating and opposite manner. The left side of the first group of cylinders is connected to the left bracket (302) through a movable end support (304), and the right side is connected to the frame (1) through a fixed end support (317). The right side of the second group of cylinders is connected to the right bracket (303) through a movable end support (304), and the left side is connected to the frame (1) through a fixed end support (317).

5. The tobacco box inner cover opening device according to claim 4, characterized in that, The opening mechanism (4) further includes: a mounting plate (401) connected to the frame (1), and two opening cylinders (402) arranged in opposite directions in the same straight line on the upper side of the mounting plate (401). The tail end of the opening cylinder (402) is hinged to the support (403), and the head end of the opening cylinder (402) is hinged to the front swing arm (405) and the rear swing arm (408) respectively through the joint bearing (404). The front swing arm (405) and the rear swing arm (408) are installed at both ends of the mounting plate (401) through the front support (406) and the rear support (407) respectively. The right side of the front swing arm (405) and the rear swing arm (408) is provided with a guard plate (409) for protecting the left-side device and supporting the left lower cover of the cigarette box.

6. A method for opening the inner lid of a cigarette box, characterized in that, The cigarette box inner cover opening device according to claim 5 includes the following specific steps: Step 1: When the positioning detection device (318) is not triggered, the baffle cylinder (511) extends, the baffle (505) rises, and the inner cover opening device of this cigarette box is ready for cigarette box input. The system provides a signal to the conveying device (5) to start conveying the cigarette box. The cigarette box is conveyed to the trigger positioning detection device (318), which provides a signal to stop the conveying device (5). The baffle cylinder (511) retracts, and the baffle (505) moves down to the low position. Step 2: The right clamping plate (308) performs the action of pushing the tobacco box, pushing the tobacco box to the left until it is blocked by the left clamping plate (307), pushing the tobacco box from the center position to the left reference position, and completing the side clamping. Step 3: The front clamping plate (206) moves backward, pushing the smoke box backward, and at the same time driving the wire rope (214) to rotate clockwise, and simultaneously driving the rear clamping plate (207) to move forward at the same distance until it is blocked by the smoke box, and clamping the smoke box from the position near the baffle (505) to the position in the middle of the front and back of the conveying direction; Step 4: The pressure plate (204) moves down, simultaneously driving the height measuring wire encoder (205) to extend until the pressure plate (204) is pressed down into the smoke box and stops. The height measuring wire encoder (205) feeds back the corresponding change signal to the system to obtain the height of the smoke box. Step 5: Extend the right push smoke cylinder (306), push the right push plate (310) to push a small amount of cigarettes to the left, and push the left side inner cover of the cigarette box open a small angle by the pushed cigarettes. The front swing arm (405) is inserted into the front inner cover of the cigarette box and swings counterclockwise from the low position to the high position. Simultaneously, the rear swing arm (408) is inserted into the rear inner cover of the cigarette box and swings clockwise from the low position to the high position, opening the left side inner cover of the cigarette box by more than (90) degrees, thus completing the opening of the inner cover. Step Six: All components controlled by the cylinder are reset, the smoke box is ready to output, and the smoke box output is completed.

7. A method for opening the inner cover of a cigarette box according to claim 6, characterized in that, In step four, the system determines the height of the smoke box based on the smoke box height. If it is a low smoke box, the movable guard plate (603) meets the support requirements of the smoke box cover at the low position, so the guardrail cylinder (602) does not move and remains extended. If it is a high smoke box, the movable guard plate (603) does not meet the support requirements of the smoke box cover at the low position, so the guardrail cylinder (602) begins to retract, causing the movable guard plate (603) to move up to the high position.

8. A method for opening the inner cover of a cigarette box according to claim 6, characterized in that, The specific operation method of step five includes: S50: The right push smoke cylinder (306) extends, and the right push plate (310) pushes out a small amount of cigarettes to the left, and the inner cover of the left cigarette box is opened at a small angle by the pushed-out cigarettes; S51: The left secondary cylinder (312) extends, causing the left clamping plate (307) to move to the left to the maximum stroke position. Simultaneously, the right pusher cylinder (306) retracts, causing the right pusher plate (310) to move to the right and be flush with the right clamping plate (308). S52: The opening cylinder (402) retracts, the front swing arm (405) is inserted into the inner cover of the front side of the cigarette box and swings counterclockwise from the low position to the high position. Simultaneously, the rear swing arm (408) is inserted into the inner cover of the rear side of the cigarette box and swings clockwise from the low position to the high position. At this time, the inner cover detection device (216) is triggered, and the opening is successful. The two swing arms open the inner cover of the left side of the cigarette box by more than (90) degrees and act as a protective plate to support the inner cover of the left side to keep it open. If the inner cover detection device (216) is not triggered, the opening fails. The front swing arm (405) and the rear swing arm (408) repeat the above opening action once. If the inner cover detection device (216) is still not triggered, the fault needs to be handled manually. S53: The right first-stage cylinder (313) retracts, causing the right clamping plate (308) to move to the left and contact the smoke box; S54: The left first-stage cylinder (311) and the left second-stage cylinder (312) retract, causing the left clamping plate (307) to move to the right to the maximum stroke position, folding the opened left inner cover to a larger angle, and at the same time aligning the cigarette packs pushed out on the left side. The right second-stage cylinder (314) retracts, clamping the cigarette box to the side for the second time. S55: The left first-stage cylinder (311) and the right first-stage cylinder (313) extend simultaneously, so that the left clamping plate (307) and the right clamping plate (308) are separated from the smoke box by a certain distance; S56: The cover-opening cylinder (402) extends, the front swing arm (405) swings clockwise from the high position to the low position, and simultaneously, the rear swing arm (408) swings counterclockwise from the high position to the low position; S57: The left push smoke cylinder (305) extends, driving the left push plate (309) to push a small amount of cigarettes to the right, and the inner cover of the right cigarette box is opened by the pushed-out cigarettes at an angle of less than (90) degrees; S58: The left pusher cylinder (305) retracts, causing the left pusher plate (309) to move to the left and become flush with the left clamping plate (307).

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