Automatic packaging equipment and packaging method for aluminum plastic cover

Abstract

The invention relates to automatic packaging equipment and method for aluminum plastic covers. The equipment comprises a rack, a bag supply device, a discharging device, a sealing device, a bag clamping device, a bag opening device, an exhaust device and a bag supporting device. The bag supplying device comprises a packaging bag containing disc, a rotating shaft is arranged above the front portion of the packaging bag containing disc in a crossing mode, the rotating shaft is driven by a rotating driving mechanism to rotate around the axis, two swing frames and two first mounting frames are arranged on the rotating shaft, and the two swing frames are located at the two ends of the rotating shaft and fixedly connected with the rotating shaft. The two first mounting frames are located on the inner sides of the two swing frames and are in sliding connection with the rotating shaft through sliding sleeves, an adjusting and fixing mechanism used for adjusting and fixing the first mounting frames is arranged between the free ends of the two swing frames, telescopic adjusting mechanisms are arranged at the free ends of the first mounting frames, and suction cup mechanisms are arranged on the telescopic adjusting mechanisms. The device is small in occupied area and can adapt to packaging bags of different sizes.

Description

Technical Field

[0001] The invention relates to aluminum-plastic cover packaging equipment, in particular to an aluminum-plastic cover automatic packaging equipment and a packaging method. Background Art

[0002] After the production of aluminum-plastic caps is completed, the finished products need to be bagged and sealed in plastic bags in a sterile and clean environment. At the current stage, bagging and sealing are generally done manually, which has low efficiency and is difficult to ensure a sterile and clean environment at the production site, and cannot meet large-scale production needs.

[0003] The existing patent CN117944955A discloses a loading and plastic sealing integrated machine and a loading and plastic sealing method thereof. In this scheme, the bag taking station, the loading station, the sealing station and the bag placing station are connected in series through a rotating bag transport device, so that automatic packaging of aluminum-plastic lids can be realized. However, the multiple stations of the equipment are distributed around the rotating bag transport device, resulting in a large occupation area of ​​the clean workshop. In addition, the equipment cannot adapt to packaging bags of different sizes, resulting in certain restrictions on its use.

[0004] Therefore, there is an urgent need for an automatic aluminum-plastic lid packaging device that occupies a small area and can adapt to packaging bags of different sizes. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic aluminum-plastic cover packaging device and a packaging method to solve the problem that the existing aluminum-plastic cover packaging device occupies a large area and cannot be applied to packaging bags of different sizes.

[0006] The present invention is implemented as follows: an automatic packaging device for aluminum-plastic lids comprises a frame, a bag supply device is arranged at one end of the frame, an output device is arranged at the other end, a feeding device, a sealing device, a bag clamping device, a bag opening device and an exhaust device are arranged above the bag supply device and the output device, and a bag holding device is arranged at the lower part between the bag supply device and the output device; the bag supply device comprises a packaging bag placing plate arranged on the frame, a rotating shaft is arranged across the upper part of the front part of the packaging bag placing plate, the two ends of the rotating shaft are rotatably connected to the frame, the rotating shaft is driven to rotate around the axis by a rotating driving mechanism, two first swinging frames and two first mounting frames are arranged on the rotating shaft, the two first swinging frames are located at the two ends of the rotating shaft and are fixedly connected to the rotating shaft, the two first mounting frames are located on the inner sides of the two first swinging frames and are slidably connected to the rotating shaft through a sliding sleeve, an adjusting and fixing mechanism for adjusting and fixing the first mounting frame is arranged between the free ends of the two first swinging frames, a telescopic adjusting mechanism is arranged at the free end of the first mounting frame, and a suction cup mechanism is arranged on the telescopic adjusting mechanism.

[0007] The adjustment and fixing mechanism comprises a transverse adjustment frame, and transverse slide grooves are respectively provided at both ends of the transverse adjustment frame. A fixing bolt is threadedly connected to the first mounting frame, and the fixing bolt passes through the slide groove. The telescopic adjustment mechanism includes a first telescopic cylinder arranged at the free end of the first mounting frame, a second mounting frame is arranged on the cylinder shaft of the first telescopic cylinder, a second telescopic cylinder is arranged on the second mounting frame, a third mounting frame extending deeply forward is arranged on the cylinder shaft of the second telescopic cylinder, the axial directions of the first telescopic cylinder and the second telescopic cylinder are consistent with the length direction of the first mounting frame, and a suction cup mechanism is arranged on the third mounting frame; The rotary drive mechanism includes a connecting rod and a swing drive element. The connecting rod is located at the end of the rotary shaft and is fixedly connected to the rotary shaft. One end of the swing drive element is hinged to the connecting rod and the other end is hinged to the frame. The rotary shaft is driven to swing around the axis by the extension and contraction of the swing drive element.

[0008] The suction cup mechanism comprises a fixing sleeve, a suction cup hollow rod is inserted in the fixing sleeve, an upper bag suction cup is arranged at the lower end of the suction cup hollow rod, an adjustment spring is arranged in the fixing sleeve, a limit ring is arranged at the part of the suction cup hollow rod located in the fixing sleeve, the lower end of the adjustment spring contacts the limit ring, and the upper end contacts the top plate of the fixing sleeve; The edge thickness of the upper bag suction cup is smaller than the thickness of the side wall of the upper bag suction cup body to form a thin-walled portion.

[0009] Adjustment holes are respectively opened in the front, back, left, and right directions of the packaging bag placement plate. Adjustment baffles are adjustably installed on the adjustment holes in the four directions, and the adjustment baffles are connected to the adjustment holes through bolts.

[0010] The unloading device includes a storage bin, an outer sleeve, a bag-holding spout and a material guiding mechanism. The storage bin is fixed on a frame, with openings at the upper and lower ends. The outer sleeve is sleeved on the outside of the storage bin. A lifting cylinder is arranged on the storage bin to drive the outer sleeve to move up and down. Two bag-holding spouts are hinged on both sides of the lower end of the outer sleeve. A pressing cylinder is arranged on the outer sleeve. The pressing cylinder is connected to the bag-holding spout through a connecting rod mechanism and is used to drive the opening and closing of the two bag-holding spouts. A rotating cylinder is arranged on the side wall of the storage bin. A flexible switch plate is axially connected in the storage bin. The rotating cylinder is connected to the rotating shaft of the flexible switch plate. The flexible switch plate is driven to rotate by the rotating cylinder to seal or open the cross section of the storage bin.

[0011] The material guiding mechanism includes an inclined material guiding pipe, an upward material receiving elbow is arranged at the lower end of the material guiding pipe, a material guiding hopper for receiving the aluminum-plastic cover is arranged at the upper part of the material receiving elbow, a downward material discharging elbow is arranged at the upper end of the material guiding pipe, a downward material discharging hood is connected to the lower end of the material discharging elbow, the material discharging hood is covered on the top of the material storage bin, and an air blowing nozzle is arranged at the bottom of the material receiving elbow, the air blowing nozzle is used to blow the aluminum-plastic cover falling from the material guiding hopper into the material receiving elbow to the material guiding pipe, and the aluminum-plastic cover is moved upward along the material guiding pipe by airflow, and an air vent is opened at the top of the material discharging elbow.

[0012] The bag holding device includes a lifting frame, a lifting mechanism, a tray, a lifting mechanism and a swinging mechanism. There are two lifting mechanisms, which are installed on the frame and located on both sides of the tray. Lifting frames are respectively arranged on the two lifting mechanisms. The two lifting frames are driven by the two lifting mechanisms to move up and down synchronously. A swing shaft is arranged at the bottom of the tray. The two ends of the swing shaft are rotatably connected to the two lifting frames respectively. The two swinging mechanisms are respectively arranged on both sides of the tray for driving the tray to rotate around the swing shaft. The lifting mechanism includes a lifting cylinder and a lifting plate. The lifting cylinder is arranged on the lower surface of the tray, and the cylinder shaft of the lifting cylinder passes through the tray upward. The lifting plate is located on the upper surface of the tray and is connected to the cylinder shaft of the lifting cylinder. Upward side baffles are respectively provided on both sides of the tray; An anti-roll bar is arranged at the rear of the pallet, the anti-roll bar is located above the pallet, and second swing frames are arranged at both ends of the anti-roll bar, the middle part of the second swing frame is hinged to the pallet, and the front part of the second swing frame extends downward through a through hole opened on the surface of the pallet to the bottom of the pallet, and an anti-roll telescopic cylinder is arranged below the pallet, and the second swing frame is driven to swing by the anti-roll telescopic cylinder; A connecting shaft is provided between the lower ends of the two second swing frames, a supporting frame is provided on the lower surface of the tray, a cylinder body of the anti-tilt telescopic cylinder is hinged on the supporting frame, and a cylinder shaft of the anti-tilt telescopic cylinder is rotatably connected to the connecting shaft; The lifting mechanism is a vertical electric slide, and the lifting frame is connected to the slide of the vertical electric slide; The swing mechanism is a telescopic cylinder, the lower end of the telescopic cylinder is hinged to the lower end of the rear part of the lifting frame, and the upper end of the telescopic cylinder is hinged to the rear part of the tray.

[0013] Fixed frames are respectively arranged on the frames on both sides of the unloading device, and the plastic sealing device, the bag opening device and the exhaust device are arranged on the fixed frames in sequence from top to bottom; The plastic sealing device comprises a first guide rod, a first sliding frame and a heating plate. There are two first guide rods and the first guide rods are located between two fixed frames. Two first sliding frames are slidably arranged between the two first guide rods. The heating plate is fixedly arranged on the first sliding frame. The two first sliding frames are respectively driven to approach or move away from each other by the plastic sealing telescopic cylinder. The bag opening mechanism comprises a bag opening telescopic cylinder, a suction cup frame, and a bag opening suction cup. The two bag opening telescopic cylinders are respectively arranged in the middle of the two fixed frames, the suction cup frame is arranged on the cylinder shaft of the bag opening telescopic cylinder, and the bag opening suction cup is arranged on the suction cup frame; The exhaust device comprises an exhaust telescopic cylinder, a sponge frame and a sponge strip. The two exhaust telescopic cylinders are respectively arranged at the middle of the two fixed frames. The sponge frame is arranged on the cylinder shaft of the exhaust telescopic cylinder and the sponge strip is arranged on the sponge frame.

[0014] The bag clamping device is located on the opposite side of the bag supplying device, and includes a bidirectional screw nut mechanism, a second guide rod and a second sliding frame. The bidirectional screw nut mechanism and the second guide rod are parallel to each other and are arranged on the frame. Second sliding frames are slidably arranged at both ends of the second guide rod. The two second sliding frames are driven by the bidirectional screw nut mechanism to approach or move away from each other. Fixed fingers are fixedly arranged at the ends of the second sliding frames and movable fingers are hingedly arranged. The movable fingers are driven by the bag clamping telescopic cylinder to realize the clamping and opening of the movable fingers and the fixed fingers.

[0015] The invention also discloses an automatic packaging method for aluminum-plastic covers, which comprises the following steps.

[0016] a. Place a stack of packaging bags on the packaging bag placement tray and connect the unloading device to the discharging end of the aluminum-plastic cover production equipment.

[0017] b. The second telescopic cylinder of the bag feeding device drives the third mounting frame to move downward, and absorbs the topmost packaging bag in the packaging bag placement tray through the suction cup mechanism. The second telescopic driving element contracts and drives the third mounting frame to lift back to its original position, so that the absorbed packaging bag is separated from the packaging bag below. The swing shaft rotates and drives the first swing frame to swing upward to a horizontal state, and the packaging bag is delivered to the bottom of the unloading device, and the packaging bag is in a vertical state.

[0018] c. The two sliding frames of the bag clamping device approach each other and clamp the two ends of the upper part of the packaging bag through movable fingers.

[0019] d. The suction cup of the bag feeding device stops adsorption, the first telescopic cylinder contracts to make the suction cup mechanism retreat a distance away from the surface of the packaging bag, and the swing shaft rotates to drive the first swing frame to return to a vertical state, ready for the next suction of the packaging bag.

[0020] e. The two sliding frames of the bag clamping device continue to approach each other for a distance, the bag opening suction cups on both sides of the packaging bag approach each other and adsorb the surface of the packaging bag, and the bag opening suction cups on both sides of the packaging bag return to their positions and move away from each other, opening the upper end of the packaging bag.

[0021] f. The lifting cylinder of the unloading device drives the outer sleeve and the bag support nozzle to move downward, inserts the bag support nozzle into the opened upper port of the packaging bag, and drives the two bag support nozzles to open through the downward pressure cylinder.

[0022] g. The bag supporting device moves upward to support the bottom of the packaging bag.

[0023] h. The aluminum-plastic cover production equipment continuously supplies the aluminum-plastic cover to the feeding device, and the aluminum-plastic cover enters the packaging bag through the feeding device, and the aluminum-plastic cover production equipment counts the output aluminum-plastic cover.

[0024] i. When the predetermined number of aluminum-plastic covers has been put into the packaging bag, the rotating element of the unloading device drives the flexible switch plate to close the cross-section of the storage bin, and the aluminum-plastic covers output by the subsequent production equipment are temporarily stored in the storage bin. The downward pressure cylinder is reset to close the two bag openings, and the lifting cylinder is reset to drive the outer sleeve and the bag opening to move upward, so that the bag opening moves upward away from the upper port of the packaging bag.

[0025] j. The tray of the bag holding device shakes up and down quickly to shake the aluminum-plastic cover in the packaging bag firmly.

[0026] k. Start the exhaust devices on both sides of the packaging bag, so that the two sponge strips are close to each other to exhaust the gas on the top of the packaging bag.

[0027] l. Start the plastic sealing device, bring the heating plates on both sides of the packaging bag close to each other, and plastic seal the upper end of the packaging bag by heating.

[0028] m. The movable finger of the bag clamping device releases the packaging bag and the sliding frame of the bag clamping device is reset.

[0029] n. The tray of the bag holding device moves downward, and the anti-roll bar lifts upward to prevent the packaging bags from falling backward. The tray tilts forward and downward, and the lifting plate lifts upward to unload the plastic-sealed packaging bags to the output device in front, and then the anti-roll bar, tray and lifting plate are reset.

[0030] o. Repeat steps bn, and in step f, the rotating element of the unloading device drives the flexible switch plate to open the cross-section of the storage bin, so that the aluminum-plastic cover temporarily stored in the storage bin falls into the packaging bag.

[0031] The present invention arranges a clamping device, a feeding device, a bag opening device, a plastic sealing device and an exhaust device at one station, and arranges a bag supporting device below the station. After the bag supply device delivers the packaging bag to the station, it is not necessary to move the position of the packaging bag, and the operations of clamping the packaging bag, opening the upper port, feeding the aluminum-plastic cover, exhausting the packaging bag and plastic sealing the packaging bag can be performed in sequence. When performing the above operations, the bag supporting device cooperates to support the bottom of the packaging bag. After the plastic sealing operation is completed, the packaging bag is unloaded to the output device through the bag supporting device to complete the output. Since the present invention arranges multiple devices in one station, the overall floor space of the equipment can be greatly reduced, and through the mutual cooperation of the position, structure and action between the various devices, the automatic packaging of the aluminum-plastic cover can be realized smoothly, the packaging efficiency is improved, and the accuracy of the number of aluminum-plastic covers in each packaging bag can be guaranteed.

[0032] In the bag supply device of the present invention, the size of the upper bag placement area on which the packaging bag is placed can be adjusted, and the distance between the two first mounting frames can be adjusted, so that it can adapt to packaging bags of different sizes. The bag supply device of the present invention can deliver the upper end of the packaging bag to a predetermined position to facilitate bag clamping, bag opening, material unloading, exhaust and plastic sealing, and can also smoothly reset the bag supply device to avoid interference between the suction cup device and the packaging bag during the resetting process.

[0033] The present invention can shake the aluminum-plastic covers in the packaging bag through the bag holding device, discharge the excess gas between the aluminum-plastic covers, and discharge the gas in the packaging bag through the exhaust device. After the packaging is completed, it can be ensured that the aluminum-plastic covers in the packaging bag will not be squeezed and deformed, and the packaging bag will not be damaged, and the aluminum-plastic covers will not collide with each other during transportation due to the excess gas in the packaging bag, causing damage to the surface of the aluminum-plastic covers. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention.

[0035] Figure 2 It is a structural diagram of the bag supply device of the present invention.

[0036] Figure 3 yes Figure 2 Side view of.

[0037] Figure 4 It is a schematic diagram of the bag supply device of the present invention sending the packaging bag to the next process.

[0038] Figure 5 It is a top view of the packaging bag placement tray of the present invention.

[0039] Figure 6 It is a structural diagram of the suction cup mechanism in the bag supply device of the present invention.

[0040] Figure 7It is a schematic diagram of the bag supply device of the present invention wherein the bag upper suction cup absorbs the packaging bag.

[0041] Figure 8 It is a schematic diagram of a feeding device of the present invention.

[0042] Fig. 9 It is a schematic diagram of the material guide tube of the present invention.

[0043] Fig.10 It is a schematic diagram of the bag holding device of the present invention.

[0044] Fig.11 yes Fig.10 AA view.

[0045] Fig.12 It is a schematic diagram of the bag holding device of the present invention after the anti-roll bar is lifted.

[0046] Fig.13 It is a schematic diagram of the rotation of the tray of the bag holding device of the present invention and the lifting of the lifting plate.

[0047] Fig.14 It is a top view of the bag clamping device of the present invention.

[0048] Fig.15 It is a schematic diagram of opening the upper port of the packaging bag of the present invention.

[0049] Fig.16 It is a schematic diagram of the present invention for venting and plastic sealing a packaging bag.

[0050] In the figure: 1, frame; 2, bag supply device; 3, unloading device; 4, bag clamping device; 5, bag opening device; 6, exhaust device; 7, plastic sealing device; 8, bag holding device; 9, output device; 10, packaging bag; 2-1, swing drive element; 2-2, packaging bag placement plate; 2-3, rotating shaft; 2-4, first swing frame; 2-5, first connecting frame; 2-6, lateral adjustment frame; 2-7, slide slot; 2-8, fixing bolt; 2-9, first telescopic cylinder; 2-10, second mounting frame ; 2-11, second telescopic cylinder; 2-12, third mounting frame; 2-13, suction cup mechanism; 2-14, connecting rod; 2-2-1, adjustment hole; 2-2-2, adjustment baffle; 2-13-1, fixing sleeve; 2-13-2, suction cup hollow rod; 2-13-3, adjustment spring; 2-13-4, limiting ring; 2-13-5, bag upper suction cup; 2-13-6, thin-walled part; 3-1, storage bin; 3-2, outer sleeve; 3-3, lifting cylinder; 3-4, bag support mouth; 3-5 , down-pressing cylinder; 3-6, rotating cylinder; 3-7, material guide pipe; 3-8, material receiving elbow; 3-9, material guide hopper; 3-10, air blowing nozzle; 3-11, material discharging elbow; 3-12, material discharging cover; 3-13, air vent; 4-1, two-way screw nut mechanism; 4-2, second guide rod; 4-3, second sliding frame; 4-4, fixed finger; 4-5, movable finger; 4-6, bag clamping telescopic cylinder; 5-1, bag opening telescopic cylinder; 5-2, suction cup frame; 5-3, bag opening suction cup; 6-1, exhaust telescopic cylinder retractable cylinder; 6-2, sponge rack; 6-3, sponge pressure strip; 7-1, fixed rack; 7-2, first guide rod; 7-3, first sliding rack; 7-4, heating plate; 8-1, lifting mechanism; 8-2, lifting rack; 8-3, tray; 8-4, swing mechanism; 8-5, lifting cylinder; 8-6, lifting plate; 8-7, swing shaft; 8-8, anti-roll bar; 8-9, second swing rack; 8-10, support frame; 8-11, anti-roll telescopic cylinder; 8-12, connecting shaft; 8-3-1, side baffle. DETAILED DESCRIPTION

[0051] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0053] like Figure 1 As shown, the automatic packaging equipment for aluminum-plastic lids of the present invention comprises a frame 1, a bag supply device 2 is arranged at a rear end of the frame 1, an output device 9 is arranged at a front end, a feeding device 3, a sealing device, a bag clamping device 4, a bag opening device 5 and an exhaust device 6 are arranged above between the bag supply device 2 and the output device 9, and a bag holding device 8 is arranged at the bottom between the bag supply device 2 and the output device 9.

[0054] like Figure 2-Figure 4 As shown, the bag supply device 2 includes a packaging bag placement plate 2-2 arranged on the frame 1, and the packaging bag placement plate 2-2 is horizontally installed at the bottom of the frame 1. A rotating shaft 2-3 is horizontally arranged above the front of the packaging bag placement plate 2-2. The rotating shaft 2-3 is in a horizontal state, and the axial direction of the rotating shaft 2-3 is consistent with the width direction of the packaging bag 10. The ends of the rotating shaft 2-3 are installed on the frame 1 through bearings, so that the two ends of the rotating shaft 2-3 are rotatably connected to the frame 1, and the rotating shaft 2-3 is driven to rotate around the axis by a rotating drive mechanism.

[0055] Two swing frames 8-92-4 and two first mounting frames are arranged on the rotating shaft 2-3. The two first swing frames 2-4 are located at both ends of the rotating shaft 2-3 and are fixedly connected to the rotating shaft 2-3. The two first mounting frames are located between the two first swing frames 2-4 and are slidably connected to the rotating shaft 2-3 through a sliding sleeve. When the rotating shaft 2-3 rotates, the first swing frame 2-4 rotates around the rotating shaft 2-3 together with the rotating shaft 2-3. In order to make the two first mounting frames rotate along the rotating shaft 2-3, it is necessary to fix the first mounting frame with the first swing frame 2-4. At the same time, in order to make the first mounting frame move along the rotating shaft 2-3 to adjust the distance between the two first mounting frames, an adjustment and fixing mechanism for adjusting and fixing the first mounting frame is arranged between the free ends of the two first swing frames 2-4. A telescopic adjustment mechanism is arranged at the free end of the first mounting frame, and a suction cup mechanism 2-13 is arranged on the telescopic adjustment mechanism. The suction cup mechanism 2-13 is driven to translate by the telescopic adjustment mechanism so that the suction cup mechanism 2-13 is close to or away from the packaging bag 10.

[0056] The adjusting and fixing mechanism includes a transverse adjusting frame 2-6, both ends of which are fixedly connected to the free ends of the two first swinging frames 2-4, and transverse slide grooves 2-7 are respectively opened at both ends of the transverse adjusting frame 2-6, and the two slide grooves 2-7 are symmetrically arranged. The first mounting frame is abutted against the transverse adjusting frame 2-6, and a fixing bolt 2-8 is threadedly connected to the first mounting frame, and the fixing bolt 2-8 passes through the slide groove 2-7. When the fixing bolt 2-8 is not tightened, the fixing bolt 2-8 can move in the slide groove 2-7, so that the position of the first mounting frame can be adjusted, thereby further adjusting the spacing and position of the two suction cup mechanisms 2-13 to make them adapt to packaging bags 10 of different widths. After adjusting the positions of the two first mounting frames, tighten the fixing bolt 2-8 to fix their positions.

[0057] The telescopic adjustment mechanism includes a first telescopic cylinder 2-9 arranged at the free end of the first mounting frame, and a second mounting frame 2-10 is arranged on the cylinder shaft of the first telescopic cylinder 2-9. The second mounting frame 2-10 is an L-shaped structure, and a second telescopic cylinder 2-11 is arranged on the second mounting frame 2-10. The axial directions of the first telescopic cylinder 2-9 and the second telescopic cylinder 2-11 are consistent with the length direction of the first mounting frame, and the second telescopic cylinder 2-11 is located at the same height position on the inner side of the first telescopic cylinder 2-9. A third mounting frame 2-12 is arranged on the cylinder shaft of the second telescopic cylinder 2-11. The third mounting frame 2-12 extends a certain length in a forward direction perpendicular to the cylinder shaft of the second telescopic cylinder 2-11, and a suction cup mechanism 2-13 is arranged at the end of the third mounting frame 2-12.

[0058] Among them, the first telescopic cylinder 2-9 is initially in an extended state.

[0059] Generally, the stroke of the second telescopic cylinder 2-11 is greater than the stroke of the first telescopic cylinder 2-9.

[0060] The second telescopic cylinder 2-11 is used for the suction cup mechanism 2-13 to absorb the packaging bag 10 from the packaging bag placement plate 2-2. When the first connecting frame 2-5 is in a vertical state, the suction cup mechanism 2-13 is located above the front of the packaging bag 10. The second telescopic cylinder 2-11 is extended to move the suction cup mechanism 2-13 downward to approach the packaging bag 10. The suction cup mechanism 2-13 contacts the packaging bag 10 located at the top of a stack of packaging bags 10 and absorbs the packaging bag 10. The second telescopic cylinder 2-11 contracts and resets to move the suction cup mechanism 2-13 upward to the initial position, thereby moving the packaging bag 10 upward to make it leave the packaging bag 10 below.

[0061] The first connecting frame 2-5 rotates forward and upward to a horizontal state, adjusts the packaging bag 10 to a vertical state and sends it to the next process. In the next process, the packaging bag 10 is clamped and fixed by the bag clamping device 4. The third mounting frame 2-12 extending forward can send the upper end of the packaging bag 10 to a certain height above the horizontal state of the first mounting frame, so as to facilitate the subsequent processes such as bag clamping, bag opening, material unloading and plastic sealing. After the bag is sent, the first mounting frame needs to be rotated and reset to a vertical state to facilitate the next suction of the packaging bag 10. During the downward swinging and resetting process of the first mounting frame, the third mounting frame 2-12 and the suction cup mechanism 2-13 extending forward will interfere with the packaging bag 10 fixed in the vertical state. At this time, the second telescopic cylinder 2-11 is already in a retracted state, so at this time, the first telescopic cylinder 2-9 is retracted to make the third mounting frame 2-12 and the suction cup mechanism 2-13 retreat a certain distance, thereby avoiding the interference problem with the vertical packaging bag 10 during the swinging process.

[0062] like Figure 5 As shown, adjustment holes 2-2-1 are respectively opened in the front, back, left and right directions of the packaging bag placement plate 2-2, and adjustment baffles 2-2-2 are adjustably installed on the adjustment holes 2-2-1 in the four directions. The adjustment baffles 2-2-2 are connected to the adjustment holes 2-2-1 by bolts. For packaging bags 10 of different sizes, the adjustment baffles 2-2-2 in the four directions are adjusted to match the contour of the packaging bags 10. The stacked packaging bags 10 can be placed just between the adjustment baffles 2-2-2, and the position of the packaging bags 10 is limited by the adjustment baffles 2-2-2.

[0063] The rotating drive mechanism includes a connecting rod 2-14 and a swinging drive element 2-1. The connecting rod 2-14 is located at the end of the rotating shaft 2-3 and is fixedly connected to the rotating shaft 2-3. One end of the swinging drive element 2-1 is hinged to the connecting rod 2-14 and the other end is hinged to the frame 1. The rotating shaft 2-3 is driven to swing around the axis by the extension and retraction of the swinging drive element 2-1.

[0064] like Figure 6As shown, the suction cup mechanism 2-13 includes a fixed sleeve 2-13-1, which is vertically fixed on the third mounting frame 2-12. A suction cup hollow rod 2-13-2 is inserted into the fixed sleeve 2-13-1. The suction cup hollow rod 2-13-2 can move along its own axial direction in the fixed sleeve 2-13-1. An upper bag suction cup 2-13-5 is provided at the lower end of the suction cup hollow rod 2-13-2. The upper bag suction cup 2-13-5 is connected to the trachea through the suction cup hollow rod 2-13-2, and the negative pressure of the trachea is transmitted to the inner cavity of the upper bag suction cup 2-13-5. An adjusting spring 2-13-3 is arranged inside the fixing sleeve 2-13-1, and the adjusting spring 2-13-3 is sleeved outside the sucker hollow rod 2-13-2. A limiting ring 2-13-4 is arranged on the part of the sucker hollow rod 2-13-2 located inside the fixing sleeve 2-13-1. The lower end of the adjusting spring 2-13-3 contacts the limiting ring 2-13-4, and the upper end contacts the top plate of the fixing sleeve 2-13-1. When there is no external force, under the elastic force of the spring, the upper bag sucker 2-13-5 extends downward to the maximum distance. When the third mounting frame 2-12 gradually moves downward until the upper bag sucker 2-13-5 contacts the surface of the packaging bag 10, the adjusting spring 2-13-3 begins to be compressed under the action of resistance until the third mounting frame 2-12 moves to the lower limit position.

[0065] Through the above structure, the present invention can automatically adapt to the thickness of the stacked packaging bags 10. As the packaging machine continues to work, the stacked packaging bags 10 in the packaging bag placement tray 2-2 gradually become fewer and thinner. Since the distance that the third mounting frame 2-12 and the suction cup mechanism 2-13 move up and down when adsorbing the packaging bags 10 is constant, within a certain thickness range, the adjustment spring 2-13-3 in the fixed sleeve 2-13-1 can make the suction cup always contact with the packaging bag 10 located at the top. In this way, it is only necessary to manually place the packaging bags 10 of corresponding thickness into the packaging bag placement tray 2-2 each time, and the subsequent bag supply process can be fully automatically realized.

[0066] like Figure 7 As shown, the edge thickness of the upper bag suction cup 2-13-5 is less than the thickness of the side wall of the upper bag suction cup 2-13-5 body to form a thin-walled portion 2-13-6. Since a circle of thin-walled portion 2-13-6 is provided at the edge of the upper bag suction cup 2-13-5, the thin-walled portion 2-13-6 can be completely flattened on the surface of the packaging bag 10 by deformation during adsorption, thereby greatly increasing the size of the sealing contact surface between the upper bag suction cup 2-13-5 and the surface of the packaging bag 10, ensuring the stability of adsorption, especially for a packaging bag 10 that is larger and thinner, the resistance encountered by the packaging bag 10 during movement is larger, and the packaging bag 10 is easily deformed. The present invention can stably adsorb the packaging bag 10, and the packaging bag 10 will not fall off during the movement.

[0067] like Figure 8As shown, the unloading device 3 includes a storage bin 3-1, an outer sleeve 3-2, a bag-holding spout 3-4 and a material guiding mechanism. The storage bin 3-1 is fixed on the frame 1. The storage bin 3-1 is open at both ends. The outer sleeve 3-2 is sleeved on the outside of the storage bin 3-1. A lifting cylinder 3-3 is arranged on the storage bin 3-1 to drive the outer sleeve 3-2 to move up and down. Two bag-holding spouts 3-4 are hinged on both sides of the lower end of the outer sleeve 3-2. A downward pressure cylinder 3-5 is arranged on the outer sleeve 3-2. The downward pressure cylinder 3-5 is connected to the bag-holding spout 3-4 through a connecting rod mechanism for driving the opening and closing of the two bag-holding spouts 3-4. When unloading is required, the outer sleeve 3-2 and the bag opening spout 3-4 are driven downward by the lifting cylinder 3-3, and the tip of the lower end of the bag opening spout 3-4 can be smoothly inserted into the upper end of the opened packaging bag 10, and then the two bag opening spouts 3-4 are driven to open by the downward pressure cylinder 3-5, which can ensure a smooth unloading channel from the storage bin 3-1 to the packaging bag 10. A rotating cylinder 3-6 is arranged on the side wall of the storage bin 3-1, and a flexible switch plate is connected to the inner axis of the storage bin 3-1. The flexible switch plate can be made of flexible materials such as rubber, and a rotating shaft is arranged in the middle thereof. The two ends of the rotating shaft are rotatably connected to the side walls of the storage bin 3-1, and the rotating cylinder 3-6 is connected to the rotating shaft of the flexible switch plate. The flexible switch plate is driven to rotate by the rotating cylinder 3-6 to seal or open the cross section of the storage bin 3-1. When the cross section of the storage bin 3-1 is closed by the flexible switch plate, if an aluminum-plastic cover happens to pass through, the aluminum-plastic cover will be stuck between the flexible switch plate and the inner wall of the storage bin 3-1. The flexible switch plate will not crush the aluminum-plastic cover, and the aluminum-plastic cover is light in weight. A certain number of aluminum-plastic covers piled up above the flexible switch plate will not cause obvious deformation and thus open the cross section of the storage bin 3-1.

[0068] like Fig. 9 As shown, the material guiding mechanism includes an inclined material guiding pipe 3-7, an upward material receiving elbow 3-8 is arranged at the lower end of the material guiding pipe 3-7, a material guiding hopper 3-9 for receiving the aluminum-plastic cover is arranged at the upper part of the material receiving elbow 3-8, a downward material discharging elbow 3-11 is arranged at the upper end of the material guiding pipe 3-7, a downward material discharging cover 3-12 is connected to the lower port of the material discharging elbow 3-11, the material discharging cover 3-12 covers the top of the material storage bin 3-1, and an air blowing nozzle 3-10 is arranged at the bottom of the material receiving elbow 3-8, and the port of the air blowing nozzle 3-10 is inclined to the material guiding pipe 3-7, and the air blowing nozzle 3-10 is used to blow the aluminum-plastic cover that falls from the material guiding hopper 3-9 into the material receiving elbow 3-8 to the material guiding pipe 3-7, and the aluminum-plastic cover is moved upward along the material guiding pipe 3-7 by air flow, and an air vent 3-13 is opened at the top of the material discharging elbow 3-11.

[0069] The output end of the aluminum-plastic cover production equipment is generally low in height, and in the present invention, because the feeding device 3, the plastic sealing device 7, the bag clamping device 4, the bag opening device 5, the exhaust device 6, etc. are arranged up and down, it is difficult to reduce the height of the feeding device 3 of the present invention, so it is transported by the conveying method proposed by the present invention. The aluminum-plastic cover output by the aluminum-plastic cover production equipment falls into the guide hopper 3-9 in turn, and enters the material receiving elbow 3-8 through the guide hopper 3-9. Under the action of the high-speed airflow blown by the blowing nozzle 3-10, the aluminum-plastic cover with a lighter weight will move upward along the guide pipe 3-7 with the air flow. When it moves to the discharge elbow 3-11 with the air flow, the gas is discharged to the outside through the air vent 3-13, and the kinetic energy provided by the air flow decreases. With the inertia of the bent elbow and the aluminum-plastic cover, the aluminum-plastic cover falls into the storage bin 3-1 through the discharge cover 3-12 toward the front and bottom, completing the transportation of the aluminum-plastic cover from a low place to a high place.

[0070] like Figure 10-13 As shown, the bag holding device 8 structure includes a lifting frame 8-2, a lifting mechanism 8-1, a tray 8-3, a lifting mechanism and a swinging mechanism 8-4.

[0071] There are two lifting mechanisms 8-1, which are respectively located on both sides of the tray 8-3, and the two lifting mechanisms 8-1 are fixedly installed on the frame 1. Lifting frames 8-2 are respectively arranged on the two lifting mechanisms 8-1, and the two lifting frames 8-2 are driven by the two lifting mechanisms 8-1 to move up and down synchronously. A swing shaft 8-7 is arranged at the bottom of the tray 8-3, and the swing shaft 8-7 is fixedly connected to the tray 8-3. The tray 8-3 rotates around the axis of the swing shaft 8-7 together with the swing shaft 8-7. The two ends of the swing shaft 8-7 are rotatably connected to the two lifting frames 8-2, and specifically, the ends of the swing shaft 8-7 are connected to the lifting frames 8-2 through bearings. Swinging mechanisms 8-4 are respectively arranged on both sides of the tray 8-3, and the tray 8-3 is driven to rotate around the swing shaft 8-7 by the swing mechanism 8-4.

[0072] The lifting mechanism is installed in the middle of the pallet 8-3. The lifting mechanism includes a lifting cylinder 8-5 and a lifting plate 8-6. The lifting cylinder 8-5 is fixedly installed on the lower surface of the pallet 8-3, and the cylinder axis of the lifting cylinder 8-5 passes through the pallet 8-3 upward. The lifting plate 8-6 is located on the upper surface of the pallet 8-3 and is connected to the cylinder axis of the lifting cylinder 8-5. The lifting plate 8-6 can be lifted above the upper surface of the pallet 8-3 or lowered to contact the upper surface of the pallet 8-3 through the extension and contraction of the lifting cylinder 8-5. The thickness of the lifting plate 8-6 is relatively thin. When the lifting plate 8-6 contacts the upper surface of the pallet 8-3, the lifting plate 8-6 is approximately flush with the upper surface of the pallet 8-3, and will not have a significant impact on the packaging bag 10 placed on the pallet 8-3.

[0073] Upward side baffles 8-3-1 are respectively provided on both sides of the tray 8-3. On the one hand, the side baffles 8-3-1 can limit the movement of the packaging bags 10 placed on the tray 8-3 to both sides. On the other hand, the side baffles 8-3-1 can be used as connecting parts to be connected with the swing mechanism 8-4, the swing frame 8-92-4, etc.

[0074] An anti-roll bar 8-8 is provided at the rear portion of the pallet 8-3, and the anti-roll bar 8-8 is located above the pallet 8-3. The length of the anti-roll bar 8-8 is slightly smaller than the spacing between the two side baffles 8-3-1 of the pallet 8-3, and the anti-roll bar 8-8 is located between the two side baffles 8-3-1. Second swing frames 8-9 are provided at both ends of the anti-roll bar 8-8, and the two second swing frames 8-9 are also located between the two side baffles 8-3-1, respectively. The middle portion of the second swing frame 8-9 is hinged to the side baffles 8-3-1 of the pallet 8-3, and the front portion of the second swing frame 8-9 extends downward through the through hole opened on the surface of the pallet 8-3 to the bottom of the pallet 8-3. An anti-roll telescopic cylinder 8-11 is provided below the pallet 8-3, and the second swing frame 8-9 is driven by the anti-roll telescopic cylinder 8-11 to swing around the hinge axis between it and the side baffle 8-3-1, thereby lifting or lowering the anti-roll bar 8-8 at the rear of the pallet 8-3.

[0075] Specifically, a connecting shaft 8-12 is arranged between the lower ends of the two swing frames 8-92-4, and the connecting shaft 8-12 is located below the tray 8-3. A supporting frame 8-10 is arranged on the lower surface of the tray 8-3, and the cylinder body of the anti-tilt telescopic cylinder 8-11 is hinged on the supporting frame 8-10, and the cylinder shaft of the anti-tilt telescopic cylinder 8-11 is rotatably connected to the connecting shaft 8-12. Since the lifting cylinder 8-5 is arranged in the middle part below the pallet 8-3, the anti-tilt telescopic cylinder 8-11 can only be arranged on one side of the lifting cylinder 8-5. The support frame 8-10 is two support plates perpendicular to the lower surface of the pallet 8-3. The support frame 8-10 is located on one side of the lifting cylinder 8-5. The anti-tilt telescopic cylinder 8-11 is located between the two support plates. The anti-tilt telescopic cylinder 8-11 drives the movement of the connecting shaft 8-12 through telescopic movement, thereby synchronously driving the two second swing frames 8-9 at both ends of the connecting shaft 8-12 to rotate around the hinge shaft hinged to the side baffle 8-3-1 of the pallet 8-3. Among them, the lifting mechanism 8-1 is a vertical electric slide, and the lifting frame 8-2 is connected to the slide of the vertical electric slide.

[0076] The swing mechanism 8-4 is a telescopic cylinder, the lower end of which is hinged to the rear lower end of the lifting frame 8-2, and the upper end of which is hinged to the rear of the tray 8-3.

[0077] When loading the packaging bag 10, the tray 8-3 is driven to rise by the lifting mechanism 8-1, and the bottom of the packaging bag 10 is lifted by the tray 8-3, and the weight of the material in the packaging bag 10 is borne by the tray 8-3; after the loading is completed, the upper part of the packaging bag 10 is separated from the upper bag clamping device 4, and the tray 8-3 is driven by the lifting mechanism 8-1 to descend to the lower limit position. During the descent process, the anti-roll bar 8-8 at the rear of the tray 8-3 is lifted to prevent the packaging bag 10 from tipping backwards. When the tray 8-3 is dropped to the lower limit position, the tray 8-3 tilts forward around the swing shaft 8-7, and the lifting plate 8-6 is lifted upward, so that the packaging bag 10 is tilted forward and output. After lowering to the lowest position and then outputting the packaging bag 10, the height difference of the packaging bag 10 when it falls can be minimized, thereby avoiding damage and deformation of the aluminum-plastic cover in the packaging bag 10.

[0078] Fixed frames 7-1 are respectively arranged on the frames 1 on both sides of the material storage bin 3-1 of the unloading device 3, and the plastic sealing device 7, the bag opening device 5 and the exhaust device 6 are arranged on the fixed frames 7-1 in sequence from top to bottom.

[0079] like Fig.15 As shown, the plastic sealing device 7 includes a first guide rod 7-2, a first sliding frame 7-3 and a heating plate 7-4. There are two first guide rods 7-2 and they are located between two fixed frames 7-1. Two first sliding frames 7-3 are slidably arranged between the two first guide rods 7-2. The heating plate 7-4 is fixedly arranged on the first sliding frame 7-3. The two first sliding frames 7-3 are driven to move closer to or away from each other by the plastic sealing telescopic cylinder.

[0080] The bag opening mechanism includes a bag opening telescopic cylinder 5-1, a suction cup frame 5-2, and a bag opening suction cup 5-3. The two bag opening telescopic cylinders 5-1 are respectively arranged in the middle of the two fixed frames 7-1, the suction cup frame 5-2 is arranged on the cylinder axis of the bag opening telescopic cylinder 5-1, and the bag opening suction cup 5-3 is arranged on the suction cup frame 5-2.

[0081] like Fig.16 As shown, the exhaust device 6 includes an exhaust telescopic cylinder 6-1, a sponge frame 6-2, and a sponge strip 6-3. The two exhaust telescopic cylinders 6-1 are respectively arranged in the middle of the two fixed frames 7-1, the sponge frame 6-2 is arranged on the cylinder axis of the exhaust telescopic cylinder 6-1, and the sponge strip 6-3 is arranged on the sponge frame 6-2.

[0082] The sponge strip 6-3 acts on the upper contour of the material in the packaging bag 10. The lower part of the sponge strip 6-3 is arc-shaped. When the packaging bag 10 is squeezed by the two sponge strips 6-3, the air above the material in the packaging bag 10 can be quickly discharged, and the sponge strip 6-3 can be deformed when encountering the aluminum-plastic cover, thereby avoiding crushing the aluminum-plastic cover.

[0083] like Fig.14As shown, the bag clamping device 4 is located on the opposite side of the bag supplying device 2, and includes a bidirectional screw nut mechanism 4-1, a second guide rod 4-2 and a second sliding frame 4-3. The bidirectional screw nut mechanism 4-1 and the second guide rod 4-2 are parallel to each other and are arranged on the frame 1. Second sliding frames 4-3 are slidably arranged at both ends of the second guide rod 4-2. The two second sliding frames 4-3 are driven by the bidirectional screw nut mechanism 4-1 to move closer to or away from each other. A fixed finger 4-4 is fixedly arranged at the end of the second sliding frame 4-3 and a movable finger 4-5 is hingedly arranged. The movable finger 4-5 is driven by the bag clamping telescopic cylinder 4-6 to realize the clamping and opening of the movable finger 4-5 and the fixed finger 4-4.

[0084] The output device 9 is arranged at the lower front part of the frame 1, and is specifically a conveyor belt device. The packaging bag 10 unloaded from the bag holding device 8 is transported to the next process through the conveyor belt device.

[0085] The invention also discloses an automatic packaging method for aluminum-plastic covers, which comprises the following steps.

[0086] a. Place a stack of packaging bags 10 on the packaging bag placement tray 2-2, and connect the unloading device 3 to the discharge end of the aluminum-plastic cover production equipment.

[0087] b. The second telescopic cylinder 2-11 of the bag feeding device drives the third mounting frame 2-12 to move downward, and absorbs the top packaging bag 10 in the packaging bag placement plate 2-2 through the suction cup mechanism 2-13. The second telescopic driving element contracts and drives the third mounting frame 2-12 to lift back to its original position, so that the absorbed packaging bag 10 is separated from the packaging bag 10 below. The swing shaft 8-7 rotates and drives the first swing frame 2-4 to swing upward to a horizontal state, and the packaging bag 10 is delivered to the bottom of the unloading device 3, and the packaging bag 10 is in a vertical state.

[0088] c. The two sliding frames of the bag clamping device 4 approach each other and clamp the two ends of the upper part of the packaging bag 10 through the movable fingers 4-5.

[0089] d. The suction cup of the bag feeding device 2 stops adsorption, the first telescopic cylinder 2-9 contracts to make the suction cup mechanism 2-13 retreat a distance away from the surface of the packaging bag 10, and the swing shaft 8-7 rotates to drive the first swing frame 2-4 to return to a vertical state, ready for the next adsorption of the packaging bag 10.

[0090] e. The two sliding frames of the bag clamping device 4 continue to approach each other for a distance, and the bag opening suction cups 5-3 on both sides of the packaging bag 10 approach each other and adsorb the surface of the packaging bag 10. The bag opening suction cups 5-3 on both sides of the packaging bag 10 return to their positions and move away from each other, opening the upper end of the packaging bag 10.

[0091] f. The lifting cylinder 3-3 of the unloading device 3 drives the outer sleeve 3-2 and the bag support spout 3-4 to move downward, inserts the bag support spout 3-4 into the opened upper port of the packaging bag 10, and drives the two bag support spouts 3-4 to open through the downward pressure cylinder 3-5.

[0092] g. The bag supporting device 8 moves upward to support the bottom of the packaging bag 10.

[0093] h. The aluminum-plastic cover production equipment continuously supplies the aluminum-plastic cover to the feeding device 3 , and the aluminum-plastic cover enters the packaging bag 10 through the feeding device 3 , and the aluminum-plastic cover production equipment counts the output aluminum-plastic cover.

[0094] i. When the number of aluminum-plastic covers entering the packaging bag 10 reaches a predetermined number, the rotating element of the unloading device 3 drives the flexible switch plate to close the cross-section of the storage bin 3-1, and the aluminum-plastic covers output by the subsequent production equipment of the aluminum-plastic covers are temporarily stored in the storage bin 3-1. The downward pressure cylinder 3-5 is reset to close the two bag openings 3-4, and the lifting cylinder 3-3 is reset to drive the outer sleeve 3-2 and the bag opening 3-4 to move upward, so that the bag opening 3-4 moves upward away from the upper port of the packaging bag 10.

[0095] j. The tray 8 - 3 of the bag holding device 8 shakes up and down quickly to shake the aluminum-plastic cover in the packaging bag 10 firmly.

[0096] k. Start the exhaust devices 6 on both sides of the packaging bag 10, so that the two sponge layers 6-3 are close to each other to exhaust the gas at the top of the packaging bag 10.

[0097] 1. Start the plastic sealing device 7, so that the heating plates 7-4 on both sides of the packaging bag 10 are close to each other, and the upper end of the packaging bag 10 is plastic sealed by heating.

[0098] m. The movable fingers 4-5 of the bag clamping device 4 release the packaging bag 10, and the sliding frame of the bag clamping device 4 is reset.

[0099] n. The tray 8-3 of the bag holding device 8 moves downward, and the anti-roll bar 8-8 is lifted upward to prevent the packaging bag 10 from falling backward. The tray 8-3 tilts forward and downward, and the lifting plate 8-6 is lifted upward to unload the plastic-sealed packaging bag 10 to the output device 9 in the front, and then the anti-roll bar 8-8, the tray 8-3 and the lifting plate 8-6 are reset.

[0100] o. Repeat steps bn, and in step f, the rotating element of the unloading device 3 drives the flexible switch plate to open the cross section of the storage bin 3-1, so that the aluminum-plastic cover temporarily stored in the storage bin 3-1 falls into the packaging bag 10.

[0101] After completing the loading of a packaging bag 10, the storage bin 3-1 can be temporarily closed by the flexible switch plate, and the aluminum-plastic cover production equipment does not need to stop production. The aluminum-plastic covers produced subsequently are temporarily stored in the storage bin 3-1. After the next packaging bag 10 arrives under the storage bin 3-1 and is opened, the accumulated aluminum-plastic covers in the storage bin 3-1 are discharged into the packaging bag 10, which can ensure the continuity of production and the accuracy of the number of aluminum-plastic covers in each packaging bag 10.

[0102] The present invention shakes the aluminum-plastic cover in the packaging bag 10 to make it firm by shaking the bag holding device 8 and squeezes the upper part of the packaging bag 10 to exhaust air by the sponge pressure strip 6-3. This can avoid the problem of the traditional vacuum exhaust method that the packaging bag 10 shrinks and squeezes the aluminum-plastic cover to cause deformation of the aluminum-plastic cover and scratches the packaging bag 10, and can exhaust the air in the packaging bag 10 as much as possible, thereby preventing the aluminum-plastic cover from moving frequently during transportation and avoiding the aluminum-plastic cover from colliding with each other in the packaging bag 10 to produce surface scratches, thereby ensuring the production qualification rate.

[0103] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic packaging equipment for aluminum-plastic lids, characterized in that: The bag-carrying device is provided at one end of the frame, and an output device is provided at the other end; a feeding device, a sealing device, a bag clamping device, a bag opening device and an exhaust device are provided above the bag-carrying device and the output device; a bag holding device is provided at the lower part between the bag-carrying device and the output device; the bag-carrying device comprises a packaging bag placing plate arranged on the frame, a rotating shaft is provided across the upper part of the front part of the packaging bag placing plate, both ends of the rotating shaft are rotatably connected to the frame, the rotating shaft is driven to rotate around the axis by a rotating driving mechanism, two first swinging frames and two first mounting frames are provided on the rotating shaft, the two first swinging frames are located at both ends of the rotating shaft and are fixedly connected to the rotating shaft, the two first mounting frames are located on the inner sides of the two first swinging frames and are slidably connected to the rotating shaft through a sliding sleeve, an adjusting and fixing mechanism for adjusting and fixing the first mounting frame is provided between the free ends of the two first swinging frames, a telescopic adjusting mechanism is provided at the free end of the first mounting frame, and a suction cup mechanism is provided on the telescopic adjusting mechanism.

2. The automatic aluminum-plastic lid packaging equipment according to claim 1 is characterized in that: The adjustment and fixing mechanism comprises a transverse adjustment frame, and transverse slide grooves are respectively provided at both ends of the transverse adjustment frame. A fixing bolt is threadedly connected to the first mounting frame, and the fixing bolt passes through the slide groove. The telescopic adjustment mechanism includes a first telescopic cylinder arranged at the free end of the first mounting frame, a second mounting frame is arranged on the cylinder shaft of the first telescopic cylinder, a second telescopic cylinder is arranged on the second mounting frame, and a third mounting frame extending deeply forward is arranged on the cylinder shaft of the second telescopic cylinder. The axial directions of the first telescopic cylinder and the second telescopic cylinder are consistent with the length direction of the first mounting frame, and a suction cup mechanism is arranged on the third mounting frame.

3. The automatic aluminum-plastic lid packaging equipment according to claim 1 is characterized in that: The suction cup mechanism comprises a fixing sleeve, a suction cup hollow rod is inserted in the fixing sleeve, an upper bag suction cup is arranged at the lower end of the suction cup hollow rod, an adjustment spring is arranged in the fixing sleeve, a limit ring is arranged at the part of the suction cup hollow rod located in the fixing sleeve, the lower end of the adjustment spring contacts the limit ring, and the upper end contacts the top plate of the fixing sleeve; The edge thickness of the upper bag suction cup is smaller than the thickness of the side wall of the upper bag suction cup body to form a thin-walled portion.

4. The automatic aluminum-plastic lid packaging equipment according to claim 1 is characterized in that: Adjustment holes are respectively opened in the front, back, left, and right directions of the packaging bag placement plate. Adjustment baffles are adjustably installed on the adjustment holes in the four directions, and the adjustment baffles are connected to the adjustment holes through bolts.

5. The automatic aluminum-plastic lid packaging equipment according to claim 1 is characterized in that: The unloading device includes a storage bin, an outer sleeve, a bag-holding spout and a material guiding mechanism. The storage bin is fixed on a frame, with openings at the upper and lower ends. The outer sleeve is sleeved on the outside of the storage bin. A lifting cylinder is arranged on the storage bin to drive the outer sleeve to move up and down. Two bag-holding spouts are hinged on both sides of the lower end of the outer sleeve. A pressing cylinder is arranged on the outer sleeve. The pressing cylinder is connected to the bag-holding spout through a connecting rod mechanism and is used to drive the opening and closing of the two bag-holding spouts. A rotating cylinder is arranged on the side wall of the storage bin. A flexible switch plate is axially connected in the storage bin. The rotating cylinder is connected to the rotating shaft of the flexible switch plate. The flexible switch plate is driven to rotate by the rotating cylinder to seal or open the cross section of the storage bin.

6. The automatic aluminum-plastic lid packaging equipment according to claim 5 is characterized in that: The material guiding mechanism includes an inclined material guiding pipe, an upward material receiving elbow is arranged at the lower end of the material guiding pipe, a material guiding hopper for receiving the aluminum-plastic cover is arranged at the upper part of the material receiving elbow, a downward material discharging elbow is arranged at the upper end of the material guiding pipe, a downward material discharging hood is connected to the lower end of the material discharging elbow, the material discharging hood is covered on the top of the material storage bin, and an air blowing nozzle is arranged at the bottom of the material receiving elbow, the air blowing nozzle is used to blow the aluminum-plastic cover falling from the material guiding hopper into the material receiving elbow to the material guiding pipe, and the aluminum-plastic cover is moved upward along the material guiding pipe by airflow, and an air vent is opened at the top of the material discharging elbow.

7. The automatic aluminum-plastic lid packaging equipment according to claim 1 is characterized in that: The bag holding device includes a lifting frame, a lifting mechanism, a tray, a lifting mechanism and a swinging mechanism. There are two lifting mechanisms, which are installed on the frame and located on both sides of the tray. Lifting frames are respectively arranged on the two lifting mechanisms. The two lifting frames are driven by the two lifting mechanisms to move up and down synchronously. A swing shaft is arranged at the bottom of the tray. The two ends of the swing shaft are rotatably connected to the two lifting frames respectively. The two swinging mechanisms are respectively arranged on both sides of the tray for driving the tray to rotate around the swing shaft. The lifting mechanism includes a lifting cylinder and a lifting plate. The lifting cylinder is arranged on the lower surface of the tray, and the cylinder shaft of the lifting cylinder passes through the tray upward. The lifting plate is located on the upper surface of the tray and is connected to the cylinder shaft of the lifting cylinder. Upward side baffles are respectively provided on both sides of the tray; An anti-roll bar is arranged at the rear of the pallet, the anti-roll bar is located above the pallet, and second swing frames are arranged at both ends of the anti-roll bar, the middle part of the second swing frame is hinged to the pallet, and the front part of the second swing frame extends downward through a through hole opened on the surface of the pallet to the bottom of the pallet, and an anti-roll telescopic cylinder is arranged below the pallet, and the second swing frame is driven to swing by the anti-roll telescopic cylinder; A connecting shaft is arranged between the lower ends of the two second swing frames, a supporting frame is arranged on the lower surface of the tray, the cylinder body of the anti-tilt telescopic cylinder is hinged on the supporting frame, and the cylinder shaft of the anti-tilt telescopic cylinder is rotatably connected to the connecting shaft.

8. The automatic aluminum-plastic lid packaging equipment according to claim 1 is characterized in that: Fixed frames are respectively arranged on the frames on both sides of the unloading device, and the plastic sealing device, the bag opening device and the exhaust device are arranged on the fixed frames in sequence from top to bottom; The plastic sealing device comprises a first guide rod, a first sliding frame and a heating plate. There are two first guide rods and the first guide rods are located between two fixed frames. Two first sliding frames are slidably arranged between the two first guide rods. The heating plate is fixedly arranged on the first sliding frame. The two first sliding frames are respectively driven to approach or move away from each other by the plastic sealing telescopic cylinder. The bag opening mechanism comprises a bag opening telescopic cylinder, a suction cup frame, and a bag opening suction cup. The two bag opening telescopic cylinders are respectively arranged in the middle of the two fixed frames, the suction cup frame is arranged on the cylinder shaft of the bag opening telescopic cylinder, and the bag opening suction cup is arranged on the suction cup frame; The exhaust device comprises an exhaust telescopic cylinder, a sponge frame and a sponge strip. The two exhaust telescopic cylinders are respectively arranged at the middle of the two fixed frames. The sponge frame is arranged on the cylinder shaft of the exhaust telescopic cylinder and the sponge strip is arranged on the sponge frame.

9. The automatic aluminum-plastic lid packaging equipment according to claim 1, characterized in that: The bag clamping device is located on the opposite side of the bag supplying device, and includes a bidirectional screw nut mechanism, a second guide rod and a second sliding frame. The bidirectional screw nut mechanism and the second guide rod are parallel to each other and are arranged on the frame. Second sliding frames are slidably arranged at both ends of the second guide rod. The two second sliding frames are driven by the bidirectional screw nut mechanism to approach or move away from each other. Fixed fingers are fixedly arranged at the ends of the second sliding frames and movable fingers are hingedly arranged. The movable fingers are driven by the bag clamping telescopic cylinder to realize the clamping and opening of the movable fingers and the fixed fingers.

10. An automatic packaging method for aluminum-plastic lids, characterized in that: The automatic packaging equipment for aluminum-plastic lids according to any one of claims 1 to 9 is implemented, comprising the following steps: a. Place a stack of packaging bags on the packaging bag placement tray, and connect the unloading device to the discharging end of the aluminum-plastic cover production equipment; b. The second telescopic cylinder of the bag feeding device drives the third mounting frame to move downward, and the suction cup mechanism absorbs the topmost bag in the bag placement tray. The second telescopic driving element contracts and drives the third mounting frame to lift back to its original position, so that the absorbed bag is separated from the bag below. The swing shaft rotates and drives the first swing frame to swing upward to a horizontal state, and the bag is delivered to the bottom of the unloading device, and the bag is in a vertical state. c. The two sliding frames of the bag clamping device approach each other and clamp the two ends of the upper part of the packaging bag through movable fingers; d. The suction cup of the bag feeding device stops adsorption, the first telescopic cylinder contracts to make the suction cup mechanism retreat a distance away from the surface of the packaging bag, and the swing shaft rotates to drive the first swing frame to return to a vertical state, ready for the next suction of the packaging bag; e. The two sliding frames of the bag clamping device continue to approach each other for a distance, and the bag opening suction cups on both sides of the bag approach each other and adsorb the surface of the bag. The bag opening suction cups on both sides of the bag return to their original positions and move away from each other, opening the upper end of the bag; f. The lifting cylinder of the unloading device drives the outer sleeve and the bag support spout to move downward, inserts the bag support spout into the opened upper port of the packaging bag, and drives the two bag support spouts to open through the downward pressure cylinder; g. The bag supporting device moves upward to support the bottom of the packaging bag; h. The aluminum-plastic cover production equipment continuously supplies aluminum-plastic covers to the feeding device, and the aluminum-plastic covers enter the packaging bags through the feeding device, and the aluminum-plastic cover production equipment counts the output aluminum-plastic covers; i. When the number of aluminum-plastic covers entering the packaging bag reaches a predetermined number, the rotating element of the unloading device drives the flexible switch plate to close the cross-section of the storage bin, and the aluminum-plastic covers output by the subsequent production equipment of the aluminum-plastic covers are temporarily stored in the storage bin. The lower pressure cylinder is reset to close the two bag openings, and the lifting cylinder is reset to drive the outer sleeve and the bag opening to move upward, so that the bag opening moves upward away from the upper end of the packaging bag; j. The tray of the bag holding device shakes up and down quickly to shake the aluminum-plastic cover in the packaging bag firmly; k. Start the exhaust devices on both sides of the packaging bag, so that the two sponge strips are close to each other to exhaust the gas on the top of the packaging bag; l. Start the plastic sealing device, bring the heating plates on both sides of the packaging bag close to each other, and heat and seal the upper end of the packaging bag; m. The active finger of the bag clamping device releases the packaging bag and the sliding frame of the bag clamping device is reset; n. The tray of the bag holding device moves downward, and the anti-roll bar is lifted upward to prevent the packaging bag from falling backward. The tray tilts forward and downward, and the lifting plate is lifted upward to unload the plastic-sealed packaging bag to the output device in front, and then the anti-roll bar, tray and lifting plate are reset; o. Repeat steps bn, and in step f, the rotating element of the unloading device drives the flexible switch plate to open the cross-section of the storage bin, so that the aluminum-plastic cover temporarily stored in the storage bin falls into the packaging bag.

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