Automatic bag sealing device and method for square-bottom paper bag

Abstract

The invention provides an automatic bag sealing device and method for square-bottom paper bags. A conveying mechanism is fixedly mounted at the top of a rack plate, a bag clamping mechanism is mounted above the conveying mechanism, a bag pressing mechanism is mounted on the front side of the conveying mechanism, a labeling mechanism is mounted above a bag folding mechanism, and a label rolling mechanism is mounted on the rightmost side of the conveying mechanism; the cambered surface auxiliary guide rail is installed on the front side edge of the conveying mechanism, the tail baffle is installed on the rear side edge of the conveying mechanism, the camera is installed above the bag folding mechanism through an L-shaped cantilever beam, the correlation sensor is installed on the right side of the labeling mechanism, a pressure sensor is installed in the labeling mechanism, and the photoelectric sensor is installed on an upper cross beam. The control system carries out recognition through images shot by the camera and tension of the adhesive tape transmitted by the pressure sensor, and controls the conveying mechanism, the bag clamping mechanism, the bag pressing mechanism, the bag folding mechanism, the labeling mechanism and the label rolling mechanism to operate according to a planned path and actions. The device can achieve automatic packaging of paper bags.

Description

Technical Field

[0001] The invention belongs to the technical field of paper bag packaging, and in particular relates to an automatic bag sealing device and method for square-bottom paper bags. Background Art

[0002] During the paper bag packaging process, packaging paper bags is a highly repetitive and labor-intensive task. Manual packaging of paper bags requires manual folding, alignment, gluing or sewing of the seals, which is a relatively slow and time-consuming process. Long-term work in this type of work can easily lead to health problems such as fatigue and hand injuries of operators. This not only affects the welfare of operators, but may also lead to reduced production efficiency due to health problems.

[0003] Chinese patent document CN116198805A, published / announced on: CN116198805A, discloses a sealing and sewing automatic packaging machine, including a frame and a clamping chain arranged on the frame for clamping and conveying materials, and the upper end of the frame is provided with: folding parts; sewing parts; bag mouth trimming parts; paper tape forming parts; traction parts; paper bag cutting parts; wrapping tape heat-sealing parts; wrapping tape pressing parts in sequence along its length direction; wherein the material is clamped by the clamping chain and passes through the folding parts, sewing parts, bag mouth trimming parts, paper tape forming parts, traction parts, paper bag cutting parts, heat-sealing parts and wrapping tape pressing parts in sequence. The beneficial effects of the present invention are: folding and sewing, paper bag sewing and wrapping tape two-in-one, suitable for occasions with many types of materials and various packaging methods, and one device can meet different production conditions and achieve a good effect of one machine for multiple uses. Its shortcomings are that this device is a multi-machine integrated device with multiple mechanisms installed above the beam. The uneven mass distribution will cause stress concentration on the beam when it is subjected to force. In addition, its internal structure is complex and no emergency braking device is installed. When a fault occurs, it is difficult to repair and may also lead to a longer maintenance cycle and higher maintenance costs. Summary of the invention

[0004] The object of the present invention is to provide a square bottom paper bag automatic sealing device and method, which can realize the automatic packaging of paper bags.

[0005] In order to achieve the above-mentioned technical features, the purpose of the present invention is achieved as follows: an automatic bag sealing device for square bottom paper bags comprises a frame plate, a transport mechanism is fixedly installed on the top of the frame plate, a bag clamping mechanism is installed above the transport mechanism, a bag pressing mechanism is installed on the front side of the transport mechanism, a labeling mechanism is installed above the bag folding mechanism, a label rolling mechanism is installed on the rightmost side of the transport mechanism, an arc auxiliary guide rail is installed on the front side of the transport mechanism, a tail baffle is installed on the rear side of the transport mechanism, a camera is installed above the bag folding mechanism through an L-shaped cantilever beam, a through-beam sensor is installed on the right side of the labeling mechanism, a pressure sensor is installed in the labeling mechanism, a photoelectric sensor is installed on the upper crossbeam, and the intermittent motion of the conveyor belt is adjusted, and the control system recognizes the tape tension transmitted by the camera image and the pressure sensor, and controls the transport mechanism, bag clamping mechanism, bag pressing mechanism, bag folding mechanism, labeling mechanism, and label rolling mechanism to operate according to the planned path and action.

[0006] The transport mechanism includes a driving wheel, which is symmetrically distributed on the left and right and synchronously connected to the driving shaft through a key. The driving shaft is supported by a bearing in a bearing seat. The bearing seat and the bearing seat support bottom plate are connected by a bolt assembly. The two driving shafts are driven by a conveyor belt. Threaded holes are provided at the four corners of the bottom of the guide rail support. The guide rail support is fixed to the frame plate by bolts. The bottom of the frame plate is provided with anti-slip convex patterns.

[0007] The tail baffle includes a vertical telescopic rod, a baffle connecting rod, a baffle support and a baffle plate. The baffle plate is welded with a vertical telescopic rod, and the vertical telescopic rod is provided with threads and is threadedly connected to the baffle connecting rod. The baffle connecting rod is fixed to the baffle support at equal intervals by fixing screws, and the baffle support is fixed to one side of the top of the transportation mechanism.

[0008] The bag clamping mechanism includes a clamping jaw, which is symmetrical on both sides and connected to a transverse clamping rod by high-strength bolts. The upper end of the clamping jaw and the gear are positioned on a gear fixing plate by a pin. One end of the clamping jaw connecting rod is connected to the clamping jaw by a bolt, and the other end is installed on the gear fixing plate. A pair of identical gears are installed on the gear fixing plate and connected to the motor main shaft by a key. The arc-surface auxiliary guide rail and the tail baffle act simultaneously to prevent the paper bag from swinging back and forth during the bag clamping process. A trapezoidal pressing plate is installed above the arc-surface auxiliary guide rail, and the trapezoidal pressing plate is connected to the top cylinder by a thread, and the top cylinder is connected to the transverse plate by bolts.

[0009] The bag pressing mechanism includes a pointed transverse splitting pressure rod, which is located directly above the V-groove of the arc-surface auxiliary guide rail. The pointed transverse splitting pressure rod is installed on the lifting slide rail through a cantilever beam. A direct-acting cylinder is installed at the lower end of the lifting slide rail. The direct-acting cylinder is installed on the U-shaped bracket through a bolt assembly and can realize the vertical lifting movement of the cantilever beam. Both ends of the cantilever beam are installed on the lifting slide rail through sliding pairs to prevent the cantilever beam from tilting left and right.

[0010] The bottom horizontal part of the arc-surface auxiliary guide rail is connected and fixed to the front side of the guide rail by a bolt assembly, the middle part of the arc-surface auxiliary guide rail is welded to multiple guardrail lifting handles installed on the side of the guide rail support, the arc-surface auxiliary guide rail is formed by stamping, and a V-shaped groove is provided at the front end of the arc-surface auxiliary guide rail, which is conducive to the sharp horizontal splitting pressure rod to cause indentation on the paper bag, and the angle of the upper bending part of the arc-surface auxiliary guide rail increases from 0 to a right angle, so that the bending section at the front end of the paper bag gradually transitions from an acute angle to a right angle.

[0011] The bag folding mechanism includes a sleeve, the upper part of the sleeve is welded to the crossbeam, the sleeve is provided with a plurality of pin holes, the two are connected by pins, and the height can be adjusted, and the crossbeam is welded by square steel; the upper crossbeam is equipped with a plurality of groups of limiting rollers, and plays a limiting role for the paper bag together with the tail baffle and the arc auxiliary guide rail, the bottom of the tripod is bolted to the frame plate, the bearing bracket is symmetrically installed on the tripod by bolts, the rolling bearing is installed in the bearing bracket, the two ends of the crossbar are installed in the inner hole of the rolling bearing, and the two horizontal cylinders are symmetrically distributed and installed on the crossbar, the front end of the push rod of the horizontal cylinder is threadedly connected to the tilt push plate, and the middle part of the bevel pressure rod on the top of the tripod is equipped with a tilt cylinder, and the front end push rod of the tilt cylinder is threadedly connected to the U-shaped fork.

[0012] The labeling mechanism includes a rubber roller fixing plate, which is fixed to the L-shaped cantilever beam by a bolt assembly, with connecting plates welded on both sides, and the L-shaped cantilever beam is connected to a camera by screws to observe the sealing of the paper bag, the feed tray is fixed to the upper part of the rubber roller fixing plate, the tape-type roll sticker is sleeved on the passive rubber roller on the feed tray, and an emergency brake plate is installed at the edge, the top extension rod is provided with a tensioning rubber roller, and the tightness of the tape can be adjusted by adjusting the tensioning rubber roller, the transmission rubber roller group is rotatably connected to the rubber roller fixing plate, and the belt pressing piece is connected to the rubber roller by bolts. At the bend of the belt, an upper and lower pressure nozzle is provided at the lower right corner of the rubber roller fixing plate to peel the sticker off the tape; the servo is installed at the rear end of the pressure nozzle, and a waste tray is provided at the lower part of the rubber roller fixing plate. The waste tape is collected on the active rubber roller on the waste tray. The back of the waste tray is connected to the servo motor by a belt drive. The speed of the tape can be controlled by the servo motor. A pressure sensor is provided on the double-axis drive roller group in the middle of the rubber roller fixing plate. The pressure sensor is electrically connected to the control system. When the pressure sensor detects that the pressure of the tape is too high, it transmits an electrical signal to the emergency brake pad and the servo motor stops working.

[0013] The label rolling mechanism includes a roller, which is connected to the wheel frame by bolts. The rotating motor is installed inside the wheel frame. Angle irons are installed on both sides of the bottom of the electric cylinder and fixed to the angle steel frame by bolts, and the other end is matched with the wheel frame thread.

[0014] A method for automatically sealing a square bottom paper bag, the method being implemented by using an automatic sealing device for a square bottom paper bag, comprising the following steps: S1. According to the specifications of the square bottom paper bag to be sealed, adjust the tail baffle of the set screw to make it close to the bottom of the paper bag, adjust the height of the limit roller to make it close to the upper surface of the paper bag, and install the tape-type roll paper on the feed tray; S2, start the device, the paper bag moves on the conveyor belt to the first photoelectric sensor, the conveyor belt stops moving, the motor drives the gear to rotate, the clamping claws rotate and close, and drives the transverse clamping rod to press into the side of the paper bag; S3, the cylinder at the top of the bag clamping mechanism pushes the trapezoidal pressing sheet downward to press the upper surface of the paper bag; S4, the clamping jaws rotate and open, the top cylinder drives the trapezoidal pressing piece to move up to the original position, and the conveyor belt moves; S5. When the paper bag reaches the V-shaped groove of the arc auxiliary guide rail, the conveyor belt stops moving, and the direct-acting cylinder under the bag pressing mechanism starts working, driving the pointed horizontal splitting pressure rod to press to the V-shaped groove, causing an indentation on the paper bag; S6, the direct-acting cylinder drives the horizontal splitting pressure rod of the pointed surface to rise to the original position, and the conveyor belt moves; S7. Under the action of the arc-surface auxiliary guide rail, the upper curved part of the indentation of the paper bag gradually becomes right-angled during the movement; S8, when the paper bag reaches the bottom of the labeling mechanism, the conveyor belt stops moving, and the two horizontal cylinders push the inclined push plate forward to drag the lower bending part of the paper bag; S9, the tilting cylinder pushes the U-shaped fork to flatten the upper curved part of the indentation; S10, the through-beam sensor located on the right side of the labeling mechanism feeds back the distance between the front end of the paper bag and the pressing nozzle and transmits a signal to the steering gear at the lower end of the labeling mechanism, and the steering gear rotates to make the pressing nozzle rotate its front end to be close to the paper bag; S11, the servo motor in the middle of the labeling mechanism starts to work, which in turn drives the active rubber roller to rotate, thereby driving the tape-type roll sticker to rotate, and the sticker is peeled off from the tape to the sealing part of the paper bag under the action of the pressure nozzle; S12, the tilt cylinder drives the U-shaped fork to retract, the steering gear at the lower end of the labeling mechanism rotates, the pressing nozzle turns to the original position, and the conveyor belt moves; S13, the electric cylinder above the label rolling mechanism pushes the wheel frame until the roller is close to the sticker; S14, the rotating motor drives the roller to rotate and roll the sticker; S15, the conveyor belt transports the square bottom paper bags to be sealed away; S16, repeating steps S2-S15 until all paper bags are sealed; S17, through the camera installed on the L-shaped cantilever beam, when it is observed that the sticker is not tightly attached, the information is fed back to the control system, and each mechanism stops working; S18. A pressure sensor is provided on the double-axis drive roller group in the middle of the rubber roller fixing plate. When the pressure sensor detects that the pressure of the tape is too high, it transmits an electrical signal to the emergency brake pad and the servo motor stops working and emits a warning sound, prompting the personnel to adjust the tape or replace the tape-type roll sticker.

[0015] The present invention has the following beneficial effects: 1. Automatic bag sealing: The present invention adopts various flexible mechanical arms and advanced sensors, which can work continuously without being limited by time and physical strength, further improving production efficiency, reducing manpower input, and reducing management costs and labor risks.

[0016] 2. Assembly line integration: The automatic bag sealing device is integrated with automatic paper feeders, printing machines, crimping machines, bag cutters and other automated equipment to achieve full automation from raw material processing to finished product output, avoiding waiting and pauses between various links in traditional production, and greatly improving production efficiency.

[0017] 3. Emergency braking device: The control system uses the camera to capture images and the pressure sensor to transmit the tape tension for identification. If the tape tension is too large or the sticker is not completely attached, all drive devices will stop working, thereby improving safety performance and reducing losses caused by accidents.

[0018] 4. Modular design: Different modules are designed to be responsible for different functions of a series of operations such as forming, folding and labeling of paper bags. The modules can be flexibly combined and replaced to meet the production needs of different products. The modular design is simple and convenient to maintain, so that when a single part of the machine fails, the module can be quickly replaced without affecting the use of other modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a three-dimensional schematic diagram from another viewing angle of the present invention.

[0022] Figure 3 It is a three-dimensional diagram of the transportation mechanism of the present invention.

[0023] Figure 4 The present invention Figure 3 Partial schematic diagram of the central transportation mechanism.

[0024] Figure 5 It is a three-dimensional schematic diagram of the bag clamping mechanism designed by the present invention.

[0025] Figure 6 It is a three-dimensional schematic diagram of the bag folding mechanism designed by the present invention.

[0026] Figure 7 It is a front view of the labeling mechanism designed by the present invention.

[0027] Figure 8 It is a partial enlarged view of the nozzle portion of the labeling mechanism designed by the present invention.

[0028] Fig. 9 It is a three-dimensional schematic diagram of the label rolling mechanism designed by the present invention.

[0029] In the figure: transport mechanism 01, driving wheel 011, driving shaft 012, conveyor belt 013, bearing 014, bearing seat 015, guide rail support 016, bearing seat support bottom plate 017; Bag clamping mechanism 02, clamping claw 021, transverse clamping rod 022, gear 023, clamping claw connecting rod 024, gear fixing plate 025, trapezoidal pressing sheet 026, transverse plate 027, motor 028, top cylinder 029; Bag pressing mechanism 03, pointed transverse splitting pressure rod 031, lifting slide rail 032, direct-acting cylinder 033, lifting slide rail 034, sliding pair 035, U-shaped bracket 036; Bag folding mechanism 04, limiting roller 041, sleeve 042, tripod 043, inclined push plate 044, U-shaped fork 045, horizontal cylinder 046, inclined cylinder 047, pressure rod 048, rolling bearing 049, bearing bracket 0410, cross bar 0411; Labeling mechanism 05, feeding tray 051, waste tray 052, tape-type roll sticker 053, rubber roller fixing plate 054, tensioning rubber roller 055, extension rod 056, active rubber roller 057, passive rubber roller 058, emergency brake piece 059, transmission roller group 0510, steering gear 0511, pressure nozzle 0512, connecting plate 0513, servo motor 0514, belt pressing piece 0515; Tail baffle 06, vertical telescopic rod 061, baffle connecting rod 062, baffle support 063, baffle sheet 064; Rolling label mechanism 07, roller 071, electric cylinder 072, angle steel frame 073, wheel frame 074, rotating motor 075; Arc auxiliary guide rail 08, guardrail lifting handle 081, L-shaped cantilever beam 9, frame plate 10, camera 11, photoelectric sensor 12, pressure sensor 13, and through-beam sensor 14. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0031] Embodiment 1: See also Figure 1-9, an automatic bag sealing device for square bottom paper bags, comprising a transport mechanism 01, a bag clamping mechanism 02, a bag pressing mechanism 03, a bag folding mechanism 04, a labeling mechanism 05, a tail baffle 06, a label rolling mechanism 07, an arc-surface auxiliary guide rail 08, an L-shaped cantilever beam 9, a frame plate 10, a camera 11, a photoelectric sensor 12, a pressure sensor 13, a beam sensor 14 and a control system, wherein the transport mechanism 01 is mounted on the frame plate 10, the bag clamping mechanism 02 is mounted above the transport mechanism 01, the bag pressing mechanism 03 is mounted on the front side of the transport mechanism 01, the labeling mechanism 05 is mounted above the bag folding mechanism 04, the label rolling mechanism 07 is mounted on the rightmost side of the transport mechanism 01, and the arc-surface auxiliary guide rail 08 is mounted on the rear baffle plate 06, a label rolling mechanism 07 is mounted on the rear baffle plate 07, a curved auxiliary guide rail 08, an L-shaped cantilever beam 9, a frame plate 10, a camera 11, a photoelectric sensor 12, a pressure sensor 13, a beam sensor 14 and a control system, wherein the transport mechanism 01 is mounted on the frame plate 10, the bag clamping mechanism 02 is mounted above the transport mechanism 01, the bag pressing mechanism 03 is mounted on the front side of the transport mechanism 01, the labeling mechanism 05 is mounted above the bag folding mechanism 04, the label rolling mechanism 07 is mounted on the rightmost side of the transport mechanism 01, and the curved auxiliary guide rail 08 is mounted on the rear baffle plate 06. The rail 08 is installed on the front side of the transport mechanism 01, the tail baffle 06 is installed on the rear side of the transport mechanism 01, the camera 11 is installed above the bag folding mechanism 04 through the L-shaped cantilever beam, the shooting sensor 14 is installed on the right side of the labeling mechanism 05, the labeling mechanism 05 is installed with a pressure sensor 13, the photoelectric sensor 12 is installed on the upper crossbeam 0412, the conveyor belt 013 is adjusted to move intermittently, the control system recognizes through the camera 11 image and the pressure sensor 13 to transmit the tape tension, and controls the transport mechanism 01, the bag clamping mechanism 02, the bag pressing mechanism 03, the bag folding mechanism 04, the labeling mechanism 05, and the label rolling mechanism 07 to perform according to the planned path and action. The above-mentioned automatic bag sealing device can realize the automatic bottom sealing of paper bags.

[0032] Preferably, the control system adopts a PLC programmable logic controller, thereby realizing automatic control of the entire device.

[0033] See also Figure 1-4 The transport mechanism 01 is composed of a driving wheel 011, a driving shaft 012, a conveyor belt 013, a bearing 014, a bearing seat 015, a guide rail support 016, and a bearing seat support bottom plate 017. The driving wheel 011 is symmetrically distributed on the left and right and is synchronously connected to the driving shaft 012 through a key. The driving shaft 012 is supported by the bearing 014 in the bearing seat 015. The bearing seat 015 and the bearing seat support bottom plate 017 are connected by a bolt assembly. The two driving shafts 012 are driven by the conveyor belt 013. The four corners of the bottom of the guide rail support 016 are cast with threaded holes. The guide rail support 016 is fixed to the frame plate 10 by bolts. The bottom of the frame plate 10 is provided with anti-slip convex patterns. The above-mentioned transport mechanism 01 can be used for the transportation of paper bags. In the specific working process, the device is started, and the paper bag moves to the first photoelectric sensor 12 on the conveyor belt 013, and the conveyor belt 013 stops moving.

[0034] In the preferred embodiment, see Figure 1-3The tail baffle 06 is composed of a vertical telescopic rod 061, a baffle connecting rod 062, a baffle support 063, and a baffle sheet 064. The baffle sheet 064 is welded with a vertical telescopic rod 061, and a thread is cast on the vertical telescopic rod 061, which is threadedly connected with the baffle connecting rod 062. The baffle connecting rod 062 is fixed to the baffle support 063 at an appropriate distance by a set screw. During the working process, according to the specifications of the square bottom paper bag to be sealed, the tail baffle 06 is adjusted by the set screw to make it close to the bottom of the paper bag.

[0035] For details, see Figure 5 The bag clamping mechanism 02 is composed of a clamping jaw 021, a transverse clamping rod 022, a gear 023, a clamping jaw connecting rod 024, a gear fixing plate 025, a trapezoidal pressing piece 026, a transverse plate 027, a motor 028, and a top cylinder 029. The left-right symmetrical clamping jaw 021 is connected to the transverse clamping rod 022 by high-strength bolts, and the upper end of the clamping jaw 021 and the gear 023 are positioned on the gear fixing plate 025 by a pin. One end of the clamping jaw connecting rod 024 is connected to the clamping jaw 021 by a bolt, and the other end is installed on the gear fixing plate 025. The gear fixing plate 025 is equipped with a pair of identical gears 023 connected to the main shaft of the motor 028 by a key. The arc auxiliary guide rail 08 and the tail baffle 06 act simultaneously to prevent the paper bag from swinging back and forth during the bag clamping process. A trapezoidal pressing piece 026 is installed on the top, and the trapezoidal pressing piece 026 is connected to the top cylinder 029 by a thread, and the top cylinder 029 is connected to the transverse plate 027 by bolts. The paper bag can be clamped by the bag clamping mechanism 02. During operation, the motor 028 drives the gear 023 to rotate, the clamping jaws 021 rotate and close, driving the transverse clamping rod 022 to press into the side of the paper bag, the top cylinder 029 of the bag clamping mechanism pushes the trapezoidal pressing sheet 026 to move downward, pressing the upper surface of the paper bag, the clamping jaws 021 rotate and open, the top cylinder 029 drives the trapezoidal pressing sheet 026 to move upward to the original position, and the conveyor belt 013 moves.

[0036] See also Figure 1-2The bag pressing mechanism 03 is composed of a pointed transverse splitting pressure rod 031, a lifting slide rail 032, a direct-acting cylinder 033, a cantilever beam 034, a sliding pair 035, and a U-shaped bracket 036. The pointed transverse splitting pressure rod 031 is located directly above the V-groove of the arc auxiliary guide rail 08. The pointed transverse splitting pressure rod 031 is installed on the lifting slide rail 032 through the cantilever beam 034. A direct-acting cylinder 033 is installed at the lower end of the lifting slide rail 032. The direct-acting cylinder 033 is installed on the U-shaped bracket 036 through a bolt assembly, which can realize the vertical lifting movement of the cantilever. Both ends of the cantilever beam 034 are installed on the lifting slide rail 032 through the sliding pair 035 to prevent the cantilever beam 034 from tilting left and right. The bag pressing mechanism 03 can be used for pressing. During the working process, the direct-acting cylinder 033 below the bag pressing mechanism 03 starts to work, driving the pointed transverse splitting pressure rod 031 to press to the V-shaped groove, causing an indentation on the paper bag; the direct-acting cylinder 033 drives the pointed transverse splitting pressure rod 031 to rise to the original position, and the conveyor belt 013 moves.

[0037] See also Figure 1-4 The horizontal part of the bottom of the curved auxiliary guide rail 08 is connected and fixed to the front side of the guide rail by a bolt assembly. The middle part of the curved auxiliary guide rail 08 is welded to the four guardrail lifting handles 081 installed on the side of the guide rail support 016. The curved auxiliary guide rail 08 is formed by stamping. The front end of the curved auxiliary guide rail 08 is provided with a V-shaped groove, which is conducive to the sharp horizontal splitting pressure rod 031 to indent the paper bag. The angle of the upper bending part of the curved auxiliary guide rail 08 increases from 0 to a right angle, so that the bending section of the front end of the paper bag gradually transitions from an acute angle to a right angle. Under the action of the curved auxiliary guide rail 08, the upper bending part of the indentation of the paper bag gradually becomes right-angled during the movement.

[0038] For details, see Figure 1-2 and Figure 6The bag folding mechanism 04 is composed of a limiting roller 041, a sleeve 042, a tripod 043, an inclined push plate 044, a U-shaped fork 045, a horizontal cylinder 046, a tilting cylinder 047, a pressure rod 048, a rolling bearing 049, a bearing bracket 0410, a cross bar 0411, and a cross beam 0412. The upper part of the sleeve 042 is welded on the cross beam 0412. The sleeve 042 is cast with multiple pin holes. The two are connected by pins and the height can be adjusted appropriately. The cross beam 0412 is welded from square steel. The upper cross beam 0412 is equipped with multiple groups of limiting rollers 041, which play a limiting role on the paper bag together with the tail baffle 06 and the arc auxiliary guide rail 08. The bottom of the tripod 043 is bolted to the frame plate 10, the bearing bracket 0410 is symmetrically installed on the tripod 043 by bolts, the rolling bearing 049 is installed in the bearing bracket 0410, the two ends of the cross bar 0411 are installed in the inner hole of the rolling bearing 049, and the two horizontal cylinders 046 are symmetrically distributed and installed on the cross bar 0411. The front end of the push rod is threadedly connected to the inclined push plate 044. The middle part of the tripod 043 bevel pressure rod 048 is equipped with a tilting cylinder 047, and the front end push rod of the tilting cylinder 047 is threadedly connected to the U-shaped fork 045. The bag folding mechanism 04 can be used for bag folding. During the working process, when the paper bag reaches the bottom of the labeling mechanism 05, the conveyor belt 013 stops moving, the two horizontal cylinders 046 push the tilting push plate 044 forward to drag the lower bending part of the paper bag, and the tilting cylinder 047 pushes the U-shaped fork 045 to flatten the upper bending part of the indentation.

[0039] For details, see Figure 1-2 and Figure 7-8The labeling mechanism 05 is composed of a feeding tray 051, a waste tray 052, a tape-type roll sticker 053, a rubber roller fixing plate 054, a tensioning rubber roller 055, an extension rod 056, an active rubber roller 057, a passive rubber roller 058, an emergency brake piece 059, a transmission roller group 0510, a steering gear 0511, a pressure nozzle 0512, a connecting plate 0513, a servo motor 0514, and a belt pressing piece 0515. The rubber roller fixing plate 054 is connected by a bolt assembly. It is fixed on the L-shaped cantilever beam 9, with connecting plates 0513 welded on both sides. The L-shaped cantilever beam 9 is connected to a camera 11 by screws to observe the sealing of the paper bag. The feed tray 051 is fixed on the upper part of the rubber roller fixing plate 054. The tape-type roll sticker 053 is sleeved on the passive rubber roller 058 on the feed tray 051, and an emergency brake plate 059 is installed on the edge. The top extension rod 056 is provided with a tensioning rubber roller 055, which can be adjusted by adjusting the tensioning rubber roller 055. 5, and then adjust the tightness of the tape, the transmission rubber roller group 0510 is rotatably connected with the rubber roller fixing plate 054, the belt pressing piece 0515 is connected to the bend of the tape by bolts, and the upper and lower pressure nozzles 0512 are provided at the lower right corner of the rubber roller fixing plate 054 to peel the sticker from the tape, and the steering engine 0511 is installed at the rear end of the pressure nozzle 0512, and the lower part of the rubber roller fixing plate 054 is provided with a waste tray 052, and the waste tape is collected on the active rubber roller 057 on the waste tray 052. The back of the waste tray 052 is connected to the servo motor 0514 by belt transmission, and the speed of the tape can be controlled by the servo motor 0514. The double-axis transmission roller group 0510 in the middle of the rubber roller fixing plate 054 is provided with a pressure sensor 13, and the pressure sensor 13 is electrically connected to the control system. When the pressure sensor 13 detects that the pressure of the tape is too large, it transmits an electrical signal to the emergency brake plate 059 and the servo motor 0514 stops working. The labeling mechanism 05 can be used for labeling. During operation, the beam sensor 14 located on the right side of the labeling mechanism 05 feeds back the distance between the front end of the paper bag and the pressure nozzle 0512 and transmits a signal to the servo 0511 at the lower end of the labeling mechanism 05. The servo 0511 rotates, causing the pressure nozzle 0512 to rotate its front end to close to the paper bag. The servo motor 0514 in the middle of the labeling mechanism 05 starts to work, which in turn drives the active rubber roller 057 to rotate, thereby driving the tape-type roll sticker 053 to rotate. Under the action of the pressure nozzle 0512, the sticker is peeled off from the tape to the sealing part of the paper bag. The tilting cylinder 047 drives the U-shaped fork 045 to shrink, the servo 0511 at the lower end of the labeling mechanism 05 rotates, the pressure nozzle 0512 turns to the original position, and the conveyor belt 013 moves.

[0040] For details, see Figure 1-2 and Fig. 9The label rolling mechanism 07 is composed of a roller 071, an electric cylinder 072, an angle steel frame 073, a wheel frame 074, and a rotating motor 075. The roller 071 is connected to the wheel frame 074 by bolts, and the rotating motor 075 is installed inside the wheel frame 074. Angle irons are installed on both sides of the bottom of the electric cylinder 072 and fixed to the angle steel frame 073 by bolts, and the other end is threaded with the wheel frame 074. The electric cylinder 072 on the top of the label rolling mechanism 07 pushes the wheel frame 074 until the roller 071 is close to the sticker.

[0041] Embodiment 2: A method for packaging paper bags using an automatic square bottom paper bag sealing device, which is used for packaging paper bags, comprises the following steps: S1. According to the specifications of the square bottom paper bag to be sealed, adjust the tail baffle 06 of the set screw to make it close to the bottom of the paper bag, adjust the height of the limiting roller 041 to make it close to the upper surface of the paper bag, and install the tape-type roll sticker 053 on the feed tray 051; S2, start the device, the paper bag moves on the conveyor belt 013 to the first photoelectric sensor 12, the conveyor belt 013 stops moving, the motor 028 drives the gear 023 to rotate, the clamping jaw 021 rotates and closes, driving the transverse clamping rod 022 to press into the side of the paper bag; S3, the cylinder 029 at the top of the bag clamping mechanism pushes the trapezoidal pressing sheet 026 downward to press the upper surface of the paper bag; S4, the clamping jaws 021 rotate and open, the top cylinder 029 drives the trapezoidal pressing piece 026 to move up to the original position, and the conveyor belt 013 moves; S5, when the paper bag reaches the V-shaped groove of the curved auxiliary guide rail 08, the conveyor belt 013 stops moving, and the direct-acting cylinder 033 under the bag pressing mechanism 03 starts working, driving the pointed transverse splitting pressure rod 031 to press to the V-shaped groove, causing an indentation on the paper bag; S6, the direct-acting cylinder 033 drives the pointed transverse splitting pressure rod 031 to rise to the original position, and the conveyor belt 013 moves; S7. Under the action of the arc-surface auxiliary guide rail 08, the upper curved part of the indentation of the paper bag gradually becomes right-angled during the movement; S8, when the paper bag reaches directly below the labeling mechanism 05, the conveyor belt 013 stops moving, and the two horizontal cylinders 046 push the inclined push plate 044 forward to drag the lower bent part of the paper bag; S9, the tilt cylinder 047 pushes the U-shaped fork 045 to flatten the upper curved part of the indentation; S10, the through-beam sensor 14 located on the right side of the labeling mechanism 05 feeds back the distance between the front end of the paper bag and the pressing nozzle 0512 and transmits a signal to the steering gear 0511 at the lower end of the labeling mechanism 05, and the steering gear 0511 rotates to make the pressing nozzle 0512 rotate its front end to close to the paper bag; S11, the servo motor 0514 in the middle of the labeling mechanism 05 starts to work, thereby driving the active rubber roller 057 to rotate, thereby driving the tape-type roll sticker 053 to rotate, and the sticker is peeled off from the tape to the sealing part of the paper bag under the action of the pressing nozzle 0512; S12, the tilting cylinder 047 drives the U-shaped fork 045 to retract, the steering gear 0511 at the lower end of the labeling mechanism 05 rotates, the pressing nozzle 0512 turns to the original position, and the conveyor belt 013 moves; S13, the electric cylinder 072 above the label rolling mechanism 07 pushes the wheel frame 074 until the roller 071 is close to the sticker; S14, the rotating motor 075 works to drive the roller 071 to rotate and roll the sticker; S15, the conveyor belt 013 transports the square bottom paper bags to be sealed away; S16, repeating steps S2-S15 until all paper bags are sealed; S17, through the camera 11 installed on the L-shaped cantilever beam 9, when it is observed that the sticker is not tightly attached, the information is fed back to the control system, and each mechanism stops working; S18, the double-axis drive roller group 0510 in the middle of the rubber roller fixing plate 054 is provided with a pressure sensor 13. When the pressure sensor 13 detects that the pressure of the tape is too high, it transmits an electrical signal to the emergency brake pad 059 and the servo motor 0514 stops working and emits a warning sound, prompting the personnel to adjust the tape or replace the tape-type roll sticker 053.

Claims

1. An automatic sealing device for square bottom paper bags, characterized in that: The machine comprises a frame plate (10), a transport mechanism (01) is fixedly installed on the top of the frame plate (10), a bag clamping mechanism (02) is installed above the transport mechanism (01), a bag pressing mechanism (03) is installed on the front side of the transport mechanism (01), a labeling mechanism (05) is installed above the bag folding mechanism (04), a label rolling mechanism (07) is installed on the rightmost side of the transport mechanism (01), an arc auxiliary guide rail (08) is installed on the front side of the transport mechanism (01), a tail baffle (06) is installed on the rear side of the transport mechanism (01), and a camera (11) is installed on the bag folding machine through an L-shaped cantilever beam (9). The control system is configured to control the conveying mechanism (01), the bag clamping mechanism (02), the bag pressing mechanism (03), the bag folding mechanism (04), the labeling mechanism (05), and the label rolling mechanism (07) to operate according to the planned path and action.

2. According to claim 1, the automatic sealing device for square bottom paper bags is characterized by: The transport mechanism (01) comprises a driving wheel (011), which is symmetrically distributed on the left and right and synchronously connected to a driving shaft (012) via a key. The driving shaft (012) is supported by a bearing (014) in a bearing seat (015). The bearing seat (015) and a bearing seat support bottom plate (017) are connected via a bolt assembly. The two driving shafts (012) are driven by a conveyor belt (013). The four corners of the bottom of the guide rail support (016) are provided with threaded holes. The guide rail support (016) is fixed to a frame plate (10) via bolts. The bottom of the frame plate (10) is provided with anti-slip convex patterns.

3. According to claim 1, the automatic sealing device for square bottom paper bags is characterized by: The tail baffle (06) comprises a vertical telescopic rod (061), a baffle connecting rod (062), a baffle support (063) and a baffle plate (064); the baffle plate (064) is welded with the vertical telescopic rod (061); the vertical telescopic rod (061) is provided with a thread and is threadedly connected to the baffle connecting rod (062); the baffle connecting rod (062) is fixed to the baffle support (063) at equal intervals by means of set screws; and the baffle support (063) is fixed to one side of the top of the transport mechanism (01).

4. The automatic square bottom paper bag sealing device according to claim 1, characterized in that: The bag clamping mechanism (02) comprises a clamping jaw (021), wherein the left-right symmetrical clamping jaw (021) is connected to a transverse clamping rod (022) by high-strength bolts, the upper end of the clamping jaw (021) and the gear (023) are positioned on a gear fixing plate (025) by a pin, one end of a clamping jaw connecting rod (024) is connected to the clamping jaw (021) by a bolt, and the other end is mounted on the gear fixing plate (025), the gear fixing plate (025) is mounted with a pair of identical gears (023) connected to the main shaft of a motor (028) by a key, the arc surface auxiliary guide rail (08) and the tail baffle (06) act simultaneously to prevent the paper bag from swinging back and forth during the bag clamping process, a trapezoidal pressing sheet (026) is installed above the arc surface auxiliary guide rail (08), the trapezoidal pressing sheet (026) is connected to a top cylinder (029) by a thread, and the top cylinder (029) is connected to the transverse plate (027) by bolts.

5. According to claim 1, the automatic sealing device for square bottom paper bags is characterized by: The bag pressing mechanism (03) comprises a pointed transverse splitting pressure rod (031), the pointed transverse splitting pressure rod (031) being located directly above the V-shaped groove of the arc surface auxiliary guide rail (08), the pointed transverse splitting pressure rod (031) being mounted on the lifting slide rail (032) via a cantilever beam (034), a direct-acting cylinder (033) being mounted at the lower end of the lifting slide rail (032), the direct-acting cylinder (033) being mounted on the U-shaped bracket (036) via a bolt assembly, and being capable of realizing the vertical lifting movement of the cantilever beam (034), the two ends of the cantilever beam (034) being mounted on the lifting slide rail (032) via a sliding pair (035) to prevent the cantilever beam (034) from deflecting left and right.

6. The automatic square bottom paper bag sealing device according to claim 2, characterized in that: The bottom horizontal portion of the arc-surface auxiliary guide rail (08) is connected and fixed to the front side of the guide rail by a bolt assembly, the middle portion of the arc-surface auxiliary guide rail (08) is welded to a plurality of guardrail lifting handles (081) installed on the side of the guide rail support (016), the arc-surface auxiliary guide rail (08) is formed by stamping, a V-shaped groove is provided at the front end of the arc-surface auxiliary guide rail (08), which is conducive to the sharp-surface transverse splitting pressure rod (031) to cause an indentation on the paper bag, and the angle of the upper bending portion of the arc-surface auxiliary guide rail (08) increases from 0 to a right angle, so that the bending section at the front end of the paper bag gradually transitions from an acute angle to a right angle.

7. The automatic square bottom paper bag sealing device according to claim 1, characterized in that: The bag folding mechanism (04) comprises a sleeve (042), the upper part of which is welded to a crossbeam (0412), the sleeve (042) being provided with a plurality of pin holes, the two being connected by pins, and the height of which can be adjusted, the crossbeam (0412) being welded by square steel; the upper crossbeam (0412) is provided with a plurality of groups of limiting rollers (041), and together with a tail baffle (06) and an arc-surface auxiliary guide rail (08), plays a limiting role on the paper bag; the bottom of the tripod (043) is bolted to the frame plate (10), and the bearing bracket (0410) is screwed to the bearing bracket (0410) by screws. The bolts are symmetrically mounted on the tripod (043), the rolling bearing (049) is mounted in the bearing bracket (0410), the two ends of the cross bar (0411) are mounted in the inner holes of the rolling bearing (049), two horizontal cylinders (046) are symmetrically distributed and mounted on the cross bar (0411), the front ends of the push rods of the horizontal cylinders (046) are threadedly connected to the tilting push plate (044), the middle part of the bevel pressure rod (048) at the top of the tripod (043) is equipped with a tilting cylinder (047), and the front end push rod of the tilting cylinder (047) is threadedly connected to the U-shaped fork (045).

8. The automatic square bottom paper bag sealing device according to claim 1, characterized in that: The labeling mechanism (05) comprises a rubber roller fixing plate (054), which is fixed to an L-shaped cantilever beam (9) by a bolt assembly, and has connecting plates (0513) welded on both sides. The L-shaped cantilever beam (9) is connected to a camera (11) by screws to observe the sealing status of the paper bag. The feed tray (051) is fixed to the upper part of the rubber roller fixing plate (054). The tape-type roll sticker (053) is sleeved on the passive rubber roller (058) on the feed tray (051), and an emergency brake plate (059) is installed at the edge. The top extension rod (056) is provided with a tensioning rubber roller (055), and the tightness of the tape can be adjusted by adjusting the tensioning rubber roller (055). The transmission rubber roller group (0510) is rotatably connected to the rubber roller fixing plate (054), and the belt pressing plate (0515) is connected to the tape by bolts. At the bend, an upper and lower pressure nozzle (0512) is provided at the lower right corner of the rubber roller fixing plate (054) to peel the sticker from the adhesive tape; a servo (0511) is installed at the rear end of the pressure nozzle (0512); a waste tray (052) is provided at the lower part of the rubber roller fixing plate (054); waste tape is collected on an active rubber roller (057) on the waste tray (052); the back of the waste tray (052) is connected to a servo motor (0514) by a belt drive; the speed of the adhesive tape can be controlled by the servo motor (0514); a pressure sensor (13) is provided on a double-axis driving roller group (0510) in the middle of the rubber roller fixing plate (054); the pressure sensor (13) is electrically connected to a control system; when the pressure sensor (13) detects that the pressure of the adhesive tape is too high, an electrical signal is transmitted to an emergency brake pad (059) and the servo motor (0514) stops working.

9. The automatic square bottom paper bag sealing device according to claim 1, characterized in that: The label rolling mechanism (07) comprises a roller (071), the roller (071) being connected to a wheel frame (074) by means of bolts, the rotary motor (075) being mounted inside the wheel frame (074), angle irons being mounted on both sides of the bottom of the electric cylinder (072) and being fixed to an angle steel frame (073) by means of bolts, and the other end being threadedly engaged with the wheel frame (074).

10. A method for automatically sealing square bottom paper bags, characterized in that: The method is implemented by using the automatic sealing device for square bottom paper bags according to any one of claims 1 to 9, and comprises the following steps: S1. According to the specifications of the square bottom paper bag to be sealed, adjust the tail baffle (06) of the set screw to make it close to the bottom of the paper bag, adjust the height of the limit roller (041) to make it close to the upper surface of the paper bag, and install the tape-type roll sticker (053) on the feed tray (051); S2, start the device, the paper bag moves on the conveyor belt (013) to the first photoelectric sensor (12), the conveyor belt (013) stops moving, the motor (028) drives the gear (023) to rotate, the clamping claw (021) rotates and closes, driving the transverse clamping rod (022) to press into the side of the paper bag; S3, the cylinder (029) at the top of the bag clamping mechanism pushes the trapezoidal pressing sheet (026) downward to press the upper surface of the paper bag; S4, the clamping jaws (021) rotate and open, the top cylinder (029) drives the trapezoidal pressing piece (026) to move up to the original position, and the conveyor belt (013) moves; S5, when the paper bag reaches the V-shaped groove of the curved auxiliary (08) guide rail, the conveyor belt (013) stops moving, and the direct-acting cylinder (033) below the bag pressing mechanism (03) starts working, driving the pointed transverse splitting pressure rod (031) to press to the V-shaped groove, causing an indentation on the paper bag; S6, the direct-acting cylinder (033) drives the pointed transverse splitting pressure rod (031) to rise to the original position, and the conveyor belt (013) moves; S7, under the action of the arc-surface auxiliary guide rail (08), the upper curved portion of the indentation of the paper bag gradually becomes right-angled during the movement; S8, when the paper bag reaches the bottom of the labeling mechanism (05), the conveyor belt (013) stops moving, and the two horizontal cylinders (046) push the inclined push plate (044) forward to hold the lower bent part of the paper bag; S9, the tilt cylinder (047) pushes the U-shaped fork (045) to flatten the upper curved portion of the indentation; S10, the beam sensor (14) located on the right side of the labeling mechanism (05) feeds back the distance between the front end of the paper bag and the pressing nozzle (0512) and transmits a signal to the steering gear (0511) at the lower end of the labeling mechanism (05), and the steering gear (0511) rotates to make the pressing nozzle (0512) rotate its front end to be close to the paper bag; S11, the servo motor (0514) in the middle of the labeling mechanism (05) starts to work, thereby driving the active rubber roller (057) to rotate, thereby driving the tape-type roll sticker (053) to rotate, and the sticker is peeled off from the tape to the sealing part of the paper bag under the action of the pressing nozzle (0512); S12, the tilting cylinder (047) drives the U-shaped fork (045) to retract, the steering gear (0511) at the lower end of the labeling mechanism (05) rotates, the pressing nozzle (0512) turns to the original position, and the conveyor belt (013) moves; S13, the electric cylinder (072) above the label rolling mechanism (07) pushes the wheel frame (074) until the roller (071) is close to the sticker; S14, the rotating motor (075) works to drive the roller (071) to rotate and roll the sticker; S15, the conveyor belt (013) transports the square bottom paper bags to be sealed away; S16, repeating steps S2-S15 until all paper bags are sealed; S17, through the camera (11) installed on the L-shaped cantilever beam (9), when it is observed that the sticker is not tightly attached, the information is fed back to the control system, and each mechanism stops working; S18, a pressure sensor (13) is provided on the middle dual-axis drive roller group (0510) of the rubber roller fixing plate (054). When the pressure sensor (13) detects that the pressure of the adhesive tape is too high, an electrical signal is transmitted to the emergency brake pad (059), and the servo motor (0514) stops working and emits a warning sound, prompting personnel to adjust the adhesive tape or replace the adhesive tape roll sticker (053).

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