Automatic packaging equipment and method for aluminum-plastic lids

Abstract

The present invention relates to an automatic packaging device for aluminum-plastic lids and a packaging method. The device includes a frame, a bag supply device, a feeding device, a sealing device, a bag clamping device, a bag opening device, an exhaust device, and a bag supporting device. The bag supply device includes a packaging bag placement tray. A rotating shaft is disposed across the front of the packaging bag placement tray. The rotating shaft is driven to rotate about the axis by a rotary drive mechanism. Two swinging frames and two first mounting frames are disposed on the rotating shaft. The two 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 inside the two swinging frames and are slidably connected to the rotating shaft via sliding sleeves. An adjustment and fixing mechanism for adjusting and fixing the first mounting frames is disposed between the free ends of the two swinging frames. A telescopic adjustment mechanism is disposed at the free end of the first mounting frame, and a suction cup mechanism is disposed on the telescopic adjustment mechanism. The present invention occupies a small area and can accommodate 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] Existing patent CN117944955A discloses a loading and plastic sealing integrated machine and a loading and plastic sealing method thereof. In this solution, the bag taking station, loading station, sealing station and bag placing station are connected in series through a rotating bag transport device, which can realize automatic packaging of aluminum-plastic lids. However, the multiple stations of the equipment are distributed around the rotating bag transport device, resulting in a large area occupied by the clean workshop. In addition, the equipment cannot adapt to packaging bags of different sizes, resulting in certain limitations on its use.

[0004] Therefore, there is an urgent need for an automatic aluminum-plastic lid packaging equipment 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 lid packaging device and a packaging method to solve the problems that the existing aluminum-plastic lid packaging device occupies a large area and cannot be applied to packaging bags of different sizes.

[0006] The present invention is achieved as follows: an automatic packaging equipment for aluminum-plastic lids comprises a frame, a bag feeding 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 feeding device and the output device, and a bag holding device is provided at the lower part between the bag feeding device and the output device; the bag feeding device comprises a packaging bag placing plate arranged on the frame, a rotating shaft is provided across the upper part of the front 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 provided 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 adjustment 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 adjustment mechanism is provided at the free end of the first mounting frame, and a suction cup mechanism is provided on the telescopic adjustment mechanism.

[0007] The adjustment and fixing mechanism includes a transverse adjustment frame, with transverse slide grooves provided at both ends of the transverse adjustment frame, and a fixing bolt threadedly connected to the first mounting frame, the fixing bolt passing through the slide groove;

[0008] The telescopic adjustment mechanism includes a first telescopic cylinder provided at the free end of the first mounting frame, a second mounting frame provided on the cylinder shaft of the first telescopic cylinder, a second telescopic cylinder provided on the second mounting frame, and a third mounting frame extending deeply forward provided on the cylinder shaft of the second telescopic cylinder. The axial directions of the first and second telescopic cylinders are consistent with the length direction of the first mounting frame, and the suction cup mechanism is provided on the third mounting frame.

[0009] The rotary drive mechanism includes a connecting rod and a swinging drive element. The connecting rod is located at the end of the rotating shaft and is fixedly connected to the rotating shaft. One end of the swinging drive element is hinged to the connecting rod and the other end is hinged to the frame. The rotating shaft is driven to swing around the axis by the extension and contraction of the swinging drive element.

[0010] The suction cup mechanism includes a fixing sleeve, a suction cup hollow rod is inserted into the fixing sleeve, an upper bag suction cup is provided at the lower end of the suction cup hollow rod, an adjustment spring is provided in the fixing sleeve, and a limit ring is provided at the portion 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;

[0011] 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.

[0012] 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.

[0013] 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 the 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 provided on the storage bin to drive the outer sleeve to move up and down. The two bag-holding spouts are hinged on both sides of the lower end of the outer sleeve. A downward pressure cylinder is provided on the outer sleeve. The downward pressure 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 provided on the side wall of the storage bin, and a flexible switch plate is axially connected to the inside of the storage bin. The rotating cylinder is connected to the rotating shaft of the flexible switch plate, and the flexible switch plate is driven to rotate by the rotating cylinder to seal or open the cross section of the storage bin.

[0014] The material guiding mechanism includes an inclined material guiding pipe, an upward material receiving elbow is provided at the lower end of the material guiding pipe, a material guiding hopper for receiving the aluminum-plastic cover is provided on the upper part of the material receiving elbow, a downward material discharging elbow is provided 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 provided 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 into the material guiding pipe, and the aluminum-plastic cover is moved upward along the material guiding pipe by the air flow, and an air vent is provided on the top of the material discharging elbow.

[0015] The bag holding device includes a lifting frame, a lifting mechanism, a tray, a lifting mechanism and a swing mechanism. There are two lifting mechanisms, which are installed on the frame and located on both sides of the tray. Lifting frames are respectively provided 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 provided at the bottom of the tray, and the two ends of the swing shaft are rotatably connected to the two lifting frames respectively. The two swing mechanisms are respectively provided 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 provided on the lower surface of the tray, and the cylinder axis 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 axis of the lifting cylinder;

[0016] Upward side baffles are respectively provided on both sides of the tray;

[0017] An anti-roll bar is provided at the rear of the pallet, the anti-roll bar being located above the pallet, and second swing frames are provided at both ends of the anti-roll bar, the middle portion of the second swing frame is hinged to the pallet, and the front portion of the second swing frame extends downward through a through hole provided on the surface of the pallet to the bottom of the pallet, and an anti-roll telescopic cylinder is provided below the pallet, which drives the second swing frame to swing;

[0018] A connecting shaft is provided between the lower ends of the two second swing frames, a support frame is provided on the lower surface of the tray, a cylinder body of the anti-tilt telescopic cylinder is hinged on the support frame, and a cylinder shaft of the anti-tilt telescopic cylinder is rotatably connected to the connecting shaft;

[0019] The lifting mechanism is a vertical electric slide, and the lifting frame is connected to the slide of the vertical electric slide;

[0020] The swing mechanism is a telescopic cylinder, the lower end of the telescopic cylinder is hinged to the lower end of the rear portion of the lifting frame, and the upper end of the telescopic cylinder is hinged to the rear portion of the tray.

[0021] Fixed frames are respectively provided on the frames on both sides of the blanking device, and the plastic sealing device, the bag opening device and the exhaust device are sequentially arranged on the fixed frames from top to bottom;

[0022] The plastic packaging device includes a first guide rod, a first sliding frame, and a heating plate. There are two first guide rods and they 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 move closer to or away from each other by the plastic packaging telescopic cylinder.

[0023] The bag opening mechanism includes 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;

[0024] The exhaust device comprises an exhaust telescopic cylinder, a sponge frame and a sponge strip. The two exhaust telescopic cylinders are respectively arranged in the middle of the two fixed frames. The sponge frame is arranged on the cylinder axis of the exhaust telescopic cylinder and the sponge strip is arranged on the sponge frame.

[0025] The bag clamping device is located on the opposite side of the bag supply 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 move closer to or away from each other. A fixed finger is fixedly arranged at the end of the second sliding frame and a movable finger is hingedly arranged. The movable finger is driven by the bag clamping telescopic cylinder to realize the clamping and opening of the movable finger and the fixed finger.

[0026] The invention also discloses an automatic packaging method for aluminum-plastic covers, which comprises the following steps.

[0027] a. Place a stack of packaging bags on the packaging bag placement tray and connect the unloading device to the discharge end of the aluminum-plastic cover production equipment.

[0028] b. The second telescopic cylinder of the bag feeding device drives the third mounting frame to move downward, and the suction cup mechanism adsorbs the topmost bag in the bag placement tray. The second telescopic drive element contracts and drives the third mounting frame to lift back to its original position, separating the adsorbed bag from the bag below. The swing shaft rotates and drives the first swing frame to swing upward to a horizontal state, delivering the bag to the bottom of the unloading device and making the bag vertical.

[0029] c. The two sliding frames of the bag clamping device move closer to each other and clamp the two ends of the upper part of the packaging bag through the movable fingers.

[0030] 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 back to the vertical state, ready for the next adsorption of the packaging bag.

[0031] 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.

[0032] f. The lifting cylinder of the unloading device drives the outer sleeve and the bag opening nozzle to move downward, inserts the bag opening nozzle into the opened upper port of the packaging bag, and drives the two bag opening nozzles to open through the downward pressure cylinder.

[0033] g. The bag supporting device moves upward to support the bottom of the packaging bag.

[0034] h. The aluminum-plastic cover production equipment continuously supplies aluminum-plastic covers to the feeding device. 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.

[0035] i. When the predetermined number of aluminum-plastic caps 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. The aluminum-plastic caps 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. The lifting cylinder is reset to drive the outer sleeve and the bag opening upward, so that the bag opening moves upward away from the upper end of the packaging bag.

[0036] j. The tray of the bag holding device shakes up and down quickly to shake the aluminum-plastic cover in the packaging bag firmly.

[0037] 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.

[0038] 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.

[0039] m. The movable finger of the bag clamping device releases the packaging bag and the sliding frame of the bag clamping device is reset.

[0040] n. The tray of the bag holding device moves downward, and the anti-roll bar lifts up to prevent the packaging bags from falling backward. The tray tilts forward and downward, and the lifting plate lifts up to unload the plastic-sealed packaging bags to the output device in the front. Then the anti-roll bar, tray and lifting plate are reset.

[0041] 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.

[0042] The present invention arranges a clamping device, a feeding device, a bag opening device, a plastic sealing device, and an exhaust device at one workstation, and arranges a bag holding device below the workstation. After the bag feeding device delivers the packaging bag to the workstation, the bag can be clamped, the upper end opened, the aluminum-plastic cover is fed, the packaging bag is exhausted, and the packaging bag is plastic sealed in sequence without moving the position of the packaging bag. When performing the above operations, the bag holding 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 holding device to complete the output. Since the present invention arranges multiple devices in one workstation, the overall floor space of the equipment can be greatly reduced. Moreover, through the mutual coordination of the position, structure, and action between the various devices, the automatic packaging of the aluminum-plastic cover can be smoothly carried out, the packaging efficiency is improved, and the accuracy of the number of aluminum-plastic covers in each packaging bag can be guaranteed.

[0043] The bag feeding device of the present invention has an adjustable upper bag placement area and an adjustable spacing between the two first mounting brackets, thereby accommodating bags of varying sizes. The bag feeding device of the present invention can deliver the upper end of the bag to a predetermined position to facilitate bag clamping, bag opening, unloading, venting, and plastic sealing. It also allows for smooth resetting of the bag feeding device, preventing interference between the suction cup assembly and the bag during resetting.

[0044] The present invention can shake the aluminum-plastic covers in the packaging bag through the bag holding device, discharge 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 ensure that the aluminum-plastic covers in the packaging bag will not be squeezed and deformed, and the packaging bag will not be damaged. 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

[0045] Figure 1 It is a structural schematic diagram of the present invention.

[0046] Figure 2 It is a structural diagram of the bag supply device of the present invention.

[0047] Figure 3 yes Figure 2 side view.

[0048] Figure 4 It is a schematic diagram of the bag supply device of the present invention sending the packaging bag to the next process.

[0049] Figure 5 It is a top view of the packaging bag placement tray of the present invention.

[0050] Figure 6 It is a structural diagram of the suction cup mechanism in the bag supply device of the present invention.

[0051] Figure 7It is a schematic diagram of the bag supply device of the present invention wherein the bag-loading suction cup absorbs the packaging bag.

[0052] Figure 8 It is a schematic diagram of a feeding device of the present invention.

[0053] Figure 9 It is a schematic diagram of the material guide tube of the present invention.

[0054] Figure 10 It is a schematic diagram of the bag holding device of the present invention.

[0055] Figure 11 yes Figure 10 AA view.

[0056] Figure 12 It is a schematic diagram of the bag holding device of the present invention after the anti-roll bar is raised.

[0057] Figure 13 It is a schematic diagram of the rotation of the tray of the bag holding device and the lifting of the lifting plate of the present invention.

[0058] Figure 14 It is a top view of the bag clamping device of the present invention.

[0059] Figure 15 It is a schematic diagram of opening the upper port of the packaging bag of the present invention.

[0060] Figure 16 It is a schematic diagram of the present invention for venting and plastic sealing a packaging bag.

[0061] Figure: 1, frame; 2, bag feeding device; 3, unloading device; 4, bag clamping device; 5, bag opening device; 6, exhaust device; 7, laminating 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, horizontal adjustment frame; 2-7, slide; 2-8, fixing bolt; 2-9, first telescopic cylinder; 2-10, second mounting frame 2-11, second telescopic cylinder; 2-12, third mounting bracket; 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, hollow suction cup rod; 2-13-3, adjustment spring; 2-13-4, limiting ring; 2-13-5, bag-loading suction cup; 2-13-6, thin-walled portion; 3-1, storage bin; 3-2, outer sleeve; 3-3, lifting cylinder; 3-4, bag-supporting nozzle; 3-5 , down-press cylinder; 3-6, rotary cylinder; 3-7, guide pipe; 3-8, receiving elbow; 3-9, guide hopper; 3-10, blowing nozzle; 3-11, discharge elbow; 3-12, discharge 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 Retraction cylinder; 6-2, sponge rack; 6-3, sponge pressure strip; 7-1, fixed frame; 7-2, first guide rod; 7-3, first sliding frame; 7-4, heating plate; 8-1, lifting mechanism; 8-2, lifting frame; 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 frame; 8-10, support frame; 8-11, anti-roll telescopic cylinder; 8-12, connecting shaft; 8-3-1, side baffle. DETAILED DESCRIPTION

[0062] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0063] In the description of the present invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used to indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are used solely to facilitate the description of the present invention and to simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, terms such as "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] like Figure 1 As shown, the automatic packaging equipment for aluminum-plastic lids of the present invention includes a frame 1, a bag supply device 2 is provided at one rear end of the frame 1, an output device 9 is provided at one 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 provided above between the bag supply device 2 and the output device 9, and a bag holding device 8 is provided below between the bag supply device 2 and the output device 9.

[0065] like Figure 2-Figure 4 As shown, the bag supply device 2 includes a packaging bag placement tray 2-2 arranged on the frame 1, and the packaging bag placement tray 2-2 is horizontally installed at the bottom of the frame 1. A rotating shaft 2-3 is arranged across the top of the front of the packaging bag placement tray 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 rotation drive mechanism.

[0066] Two swing frames 8-92-4 and two first mounting frames are provided 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 via a sliding sleeve. When the rotating shaft 2-3 rotates, the first swing frames 2-4 rotate around the rotating shaft 2-3 along with the rotating shaft 2-3. In order to enable the two first mounting frames to rotate along the rotating shaft 2-3, it is necessary to fix the first mounting frames to the first swing frames 2-4. At the same time, in order to enable the first mounting frames to 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 frames is provided between the free ends of the two first swing frames 2-4. A telescopic adjustment mechanism is provided at the free end of the first mounting frame, and a suction cup mechanism 2-13 is provided on the telescopic adjustment mechanism. The telescopic adjustment mechanism drives the suction cup mechanism 2-13 to move horizontally, so that the suction cup mechanism 2-13 moves closer to or away from the packaging bag 10.

[0067] The adjusting and fixing mechanism includes a transverse adjusting frame 2-6, the two ends of the transverse adjusting frame 2-6 are fixedly connected to the free ends of the two first swinging frames 2-4, and transverse slide grooves 2-7 are respectively provided at the two ends of the transverse adjusting frame 2-6. 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. 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 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.

[0068] 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 axis 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.

[0069] Among them, the first telescopic cylinder 2-9 is initially in an extended state.

[0070] Generally, the stroke of the second telescopic cylinder 2-11 is greater than the stroke of the first telescopic cylinder 2-9.

[0071] 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 extends 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.

[0072] The first connecting frame 2-5 rotates forward and upward to a horizontal position, adjusting the packaging bag 10 to a vertical position and delivering it to the next process. In the next process, the packaging bag 10 is clamped and fixed by the bag clamping device 4. The forward-extending third mounting frame 2-12 can deliver the upper end of the packaging bag 10 to a certain height above the horizontal position of the first mounting frame, thereby facilitating subsequent processes such as bag clamping, bag opening, material unloading, and plastic sealing. After the bag is delivered, the first mounting frame needs to rotate back to a vertical position to facilitate the next suction of the packaging bag 10. During the downward swinging and reset of the first mounting frame, the forward-extending third mounting frame 2-12 and the suction cup mechanism 2-13 will interfere with the vertically fixed packaging bag 10. At this time, the second telescopic cylinder 2-11 is already retracted. Therefore, the first telescopic cylinder 2-9 is retracted to cause the third mounting frame 2-12 and the suction cup mechanism 2-13 to retreat a certain distance, thereby preventing interference with the vertical packaging bag 10 during the swinging process.

[0073] 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 contours 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.

[0074] 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 contraction of the swinging drive element 2-1.

[0075] 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, and a suction cup hollow rod 2-13-2 is connected in 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, and 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 transferred to the inner cavity of the upper bag suction cup 2-13-5. An adjustment spring 2-13-3 is disposed within the fixing sleeve 2-13-1. The adjustment spring 2-13-3 is sleeved onto the exterior of the hollow suction cup rod 2-13-2. A limit ring 2-13-4 is disposed on the portion of the hollow suction cup rod 2-13-2 located within the fixing sleeve 2-13-1. The lower end of the adjustment spring 2-13-3 contacts the limit ring 2-13-4, while the upper end contacts the top plate of the fixing sleeve 2-13-1. When no external force is applied, the elastic force of the spring causes the bag-loading suction cup 2-13-5 to extend downward to its maximum extent. As the third mounting bracket 2-12 gradually moves downward until the bag-loading suction cup 2-13-5 contacts the surface of the packaging bag 10, the resistance forces the adjustment spring 2-13-3 to begin to compress until the third mounting bracket 2-12 reaches its lower limit.

[0076] 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.

[0077] 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, forming 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 against 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. This is especially true for large and relatively thin packaging bags 10, which encounter greater resistance during movement and are easily deformed. The present invention can stably adsorb the packaging bag 10 and prevent the packaging bag 10 from falling off during movement.

[0078] 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 upper and lower ends of the storage bin 3-1 are open. The outer sleeve 3-2 is sleeved on the outside of the storage bin 3-1. A lifting cylinder 3-3 is provided on the storage bin 3-1 to drive the outer sleeve 3-2 to move up and down. The 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 provided 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. Then, the two bag opening spouts 3-4 are driven to open by the pressing cylinder 3-5, thereby ensuring a smooth unloading channel from the storage bin 3-1 to the packaging bag 10. A rotating cylinder 3-6 is provided on the side wall of the storage bin 3-1, and a flexible switch plate is connected to the axis of the storage bin 3-1. The flexible switch plate can be made of a flexible material such as rubber, and a rotating shaft is provided in the middle thereof. The two ends of the rotating shaft are rotatably connected to the side wall of the storage bin 3-1. 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, thereby opening the cross section of the storage bin 3-1.

[0079] like Figure 9 As shown, the material guiding mechanism includes an inclined material guiding pipe 3-7, an upward material receiving elbow 3-8 is provided at the lower end of the material guiding pipe 3-7, a material guiding hopper 3-9 for receiving the aluminum-plastic cover is provided on the upper part of the material receiving elbow 3-8, a downward material discharging elbow 3-11 is provided at the upper end of the material guiding pipe 3-7, a downward material discharging cover 3-12 is connected to the lower end 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 provided at the bottom of the material receiving elbow 3-8, the port of the air blowing nozzle 3-10 is inclined to the material guiding pipe 3-7, 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 into the material guiding pipe 3-7, and the aluminum-plastic cover is moved upward along the material guiding pipe 3-7 by the air flow, and an air vent 3-13 is provided at the top of the material discharging elbow 3-11.

[0080] The output end of the aluminum-plastic cover production equipment is generally low in height, and in the present invention, because the blanking 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, the height of the blanking device 3 of the present invention is difficult to reduce, so the conveying method proposed by the present invention is conveyed. The aluminum-plastic cover output by the aluminum-plastic cover production equipment falls into the guide hopper 3-9 in sequence, and enters the material receiving elbow 3-8 through the guide hopper 3-9, under the action of the high-speed air flow blown by the blowing nozzle 3-10, the aluminum-plastic cover with lighter weight can move upward along the guide pipe 3-7 with the air flow, and when it moves to the discharge elbow 3-11 with the air flow, because the gas is discharged to the outside through the air vent 3-13, the kinetic energy provided by the air flow decreases, and the inertia of the bent elbow and the aluminum-plastic cover is matched, and the aluminum-plastic cover falls into the storage bin 3-1 through the discharge cover 3-12 toward the front and bottom, completing the conveying of the aluminum-plastic cover from a low place to a high place.

[0081] 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.

[0082] There are two lifting mechanisms 8-1, one located on either side of the tray 8-3 and fixedly mounted on the frame 1. A lifting frame 8-2 is mounted on each lifting mechanism 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 mounted at the bottom of the tray 8-3 and is fixedly connected to the tray 8-3. The tray 8-3 rotates along with the swing shaft 8-7 around its axis. The ends of the swing shaft 8-7 are rotatably connected to the two lifting frames 8-2. Specifically, the ends of the swing shaft 8-7 are connected to the lifting frames 8-2 via bearings. A swing mechanism 8-4 is mounted on each side of the tray 8-3, driving the tray 8-3 to rotate about the swing shaft 8-7.

[0083] 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 by 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 bags 10 placed on the pallet 8-3.

[0084] 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 connect with the swing mechanism 8-4, the swing frame 8-92-4, etc.

[0085] The second swing frame 8-9 is respectively provided at both ends of the anti-roll bar 8-8, and the two second swing frames 8-9 are also respectively located between the two side baffles 8-3-1. The middle part of the second swing frame 8-9 is hinged to the side baffle 8-3 of the pallet 8-3, and the front part 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 under 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.

[0086] Specifically, a connecting shaft 8-12 is provided 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 provided 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 set in the middle below the pallet 8-3, the anti-tilt telescopic cylinder 8-11 can only be set 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 axis hinged to the side baffle 8-3-1 of the pallet 8-3.

[0087] 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.

[0088] The swing mechanism 8-4 is a telescopic cylinder, the lower end of the telescopic cylinder is hinged to the lower end of the rear of the lifting frame 8-2, and the upper end of the telescopic cylinder is hinged to the rear of the tray 8-3.

[0089] When loading the bag 10, the lifting mechanism 8-1 drives the tray 8-3 upward, which then lifts the bottom of the bag 10 and bears the weight of the material in the bag 10. When loading is complete, the upper portion of the bag 10 is released from the bag clamping device 4 above, and the lifting mechanism 8-1 drives the tray 8-3 down to its lower limit. During this descent, the anti-roll bar 8-8 at the rear of the tray 8-3 is raised to prevent the bag 10 from tipping backward. When the tray 8-3 reaches its lower limit, it tilts forward about the swing axis 8-7 and lifts the lifting plate 8-6 upward, causing the bag 10 to tip forward for delivery. Lowering the bag 10 to its lowest position before delivering it minimizes the height difference between the bags 10 and the plastic cover, thereby preventing damage or deformation to the plastic cover.

[0090] Fixed frames 7 - 1 are respectively provided on the frame 1 on both sides of the 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 sequentially arranged on the fixed frames 7 - 1 from top to bottom.

[0091] like Figure 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 the two fixed frames 7-1. Two first sliding frames 7-3 are slidingly 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.

[0092] 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.

[0093] like Figure 16 As shown, the exhaust device 6 includes an exhaust telescopic cylinder 6-1, a sponge rack 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 rack 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 rack 6-2.

[0094] The sponge bead 6-3 acts on the upper contour of the material in the packaging bag 10. The lower part of the sponge bead 6-3 is arc-shaped. When the packaging bag 10 is squeezed by the two sponge bead 6-3, the air above the material in the packaging bag 10 can be quickly discharged, and the sponge bead 6-3 can be deformed when encountering the aluminum-plastic cover, thereby avoiding damaging the aluminum-plastic cover.

[0095] like Figure 14As shown, the bag clamping device 4 is located on the opposite side of the bag supply 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 slidingly 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.

[0096] The output device 9 is arranged at the lower front part of the frame 1, specifically a conveyor belt device. The packaging bags 10 unloaded from the bag holding device 8 are transported to the next process through the conveyor belt device.

[0097] The invention also discloses an automatic packaging method for aluminum-plastic covers, which comprises the following steps.

[0098] 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.

[0099] 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 packaging bag 10 located at the top 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.

[0100] c. The two sliding frames of the bag clamping device 4 are close to each other and clamp the ends of the upper portion of the bag 10 through the movable fingers 4-5.

[0101] 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 back to the vertical state, ready for the next adsorption of the packaging bag 10.

[0102] 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 bag 10 approach each other and adsorb the surface of the bag 10. The bag opening suction cups 5-3 on both sides of the bag 10 return to their positions and move away from each other, opening the upper end of the bag 10.

[0103] f. The lifting cylinder 3-3 of the blanking device 3 drives the outer sleeve 3-2 and the bag support nozzle 3-4 to move downward, inserts the bag support nozzle 3-4 into the opened upper port of the packaging bag 10, and drives the two bag support nozzles 3-4 to open through the downward pressure cylinder 3-5.

[0104] g. The bag supporting device 8 moves upward to support the bottom of the packaging bag 10.

[0105] h. The aluminum-plastic cover production equipment continuously supplies aluminum-plastic covers to the feeding device 3 , and the aluminum-plastic covers enter the packaging bag 10 through the feeding device 3 . The aluminum-plastic cover production equipment counts the output aluminum-plastic covers.

[0106] 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 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 end of the packaging bag 10.

[0107] 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 solid.

[0108] k. Start the exhaust device 6 on both sides of the packaging bag 10 so that the two sponge strips 6-3 are close to each other and the gas at the top of the packaging bag 10 is discharged.

[0109] 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.

[0110] m. The movable fingers 4-5 of the bag clamping device 4 release the bag 10, and the sliding frame of the bag clamping device 4 is reset.

[0111] n. The tray 8-3 of the bag holding device 8 moves downward, and at the same time 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 at the same time 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, tray 8-3 and lifting plate 8-6 are reset.

[0112] 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.

[0113] 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.

[0114] The present invention shakes the aluminum-plastic cover in the packaging bag 10 firmly by shaking the bag holding device 8 and squeezes the upper part of the packaging bag 10 to exhaust air through the sponge strip 6-3, which can avoid the problem of the traditional vacuum exhaust method that the packaging bag 10 shrinks and squeezes the aluminum-plastic cover, causing the aluminum-plastic cover to deform and scratch 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 cause surface scratches, thereby ensuring the production qualification rate.

[0115] 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 they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate 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-feeding mechanism is a pair of side panels, and the side panels have respective opposite ends, and the upper end is provided with a bag-feeding mechanism, and the lower end is provided with a bag-feeding mechanism, and the lower end is provided with a bag-feeding mechanism, and the bag-feeding mechanism is a pair of side panels, and the upper end is provided with a bag-feeding mechanism, and the lower end is provided with a bag-feeding mechanism. The bag holding device includes a lifting frame, a lifting mechanism, a tray, a lifting mechanism and a swing mechanism. There are two lifting mechanisms, which are installed on the frame and located on both sides of the tray. Lifting frames are respectively provided 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 provided at the bottom of the tray, and the two ends of the swing shaft are rotatably connected to the two lifting frames respectively. The two swing mechanisms are respectively provided 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 provided on the lower surface of the tray, and the cylinder axis 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 axis of the lifting cylinder; Upward side baffles are respectively provided on both sides of the tray; An anti-roll bar is provided at the rear of the pallet, the anti-roll bar being located above the pallet, and second swing frames are provided at both ends of the anti-roll bar, the middle portion of the second swing frame is hinged to the pallet, and the front portion of the second swing frame extends downward through a through hole provided on the surface of the pallet to the bottom of the pallet, and an anti-roll telescopic cylinder is provided below the pallet, which drives the second swing frame to swing; 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 pallet, 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.

2. The automatic aluminum-plastic lid packaging equipment according to claim 1, characterized in that: The adjustment and fixing mechanism includes a transverse adjustment frame, with transverse slide grooves provided at both ends of the transverse adjustment frame, and a fixing bolt threadedly connected to the first mounting frame, the fixing bolt passing 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 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 the suction cup mechanism is arranged on the third mounting frame.

3. The automatic packaging equipment for aluminum-plastic lids according to claim 1, characterized in that: The suction cup mechanism includes a fixing sleeve, a suction cup hollow rod is inserted into the fixing sleeve, an upper bag suction cup is provided at the lower end of the suction cup hollow rod, an adjustment spring is provided in the fixing sleeve, and a limit ring is provided at the portion 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, 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, 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 the 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 provided on the storage bin to drive the outer sleeve to move up and down. The two bag-holding spouts are hinged on both sides of the lower end of the outer sleeve. A downward pressure cylinder is provided on the outer sleeve. The downward pressure 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 provided on the side wall of the storage bin, and a flexible switch plate is axially connected to the inside of the storage bin. The rotating cylinder is connected to the rotating shaft of the flexible switch plate, and 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, characterized in that: The material guiding mechanism includes an inclined material guiding pipe, an upward material receiving elbow is provided at the lower end of the material guiding pipe, a material guiding hopper for receiving the aluminum-plastic cover is provided on the upper part of the material receiving elbow, a downward material discharging elbow is provided 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 provided 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 into the material guiding pipe, and the aluminum-plastic cover is moved upward along the material guiding pipe by the air flow, and an air vent is provided on the top of the material discharging elbow.

7. The automatic aluminum-plastic lid packaging equipment according to claim 1, characterized in that: Fixed frames are respectively provided on the frames on both sides of the blanking device, and the plastic sealing device, the bag opening device and the exhaust device are sequentially arranged on the fixed frames from top to bottom; The plastic packaging device includes a first guide rod, a first sliding frame, and a heating plate. There are two first guide rods and they 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 move closer to or away from each other by the plastic packaging telescopic cylinder. The bag opening device includes 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 in the middle of the two fixed frames. The sponge frame is arranged on the cylinder axis of the exhaust telescopic cylinder and the sponge strip is arranged on the sponge frame.

8. 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 supply 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 move closer to or away from each other. A fixed finger is fixedly arranged at the end of the second sliding frame and a movable finger is hingedly arranged. The movable finger is driven by the bag clamping telescopic cylinder to realize the clamping and opening of the movable finger and the fixed finger.

9. 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 8 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 discharge end of the aluminum-plastic cover production equipment; b. The second telescopic cylinder of the bag feeding device drives the third mounting frame downward, and the suction cup mechanism sucks the top bag in the bag placement tray. The second telescopic cylinder contracts, driving the third mounting frame back to its original position, separating the sucked bag from the bags below. The rotating shaft rotates, driving the first swing frame upward to a horizontal position, delivering the bag to the bottom of the unloading device, and keeping the bag in a vertical position. c. The two sliding frames of the bag clamping device move closer to each other and clamp the two ends of the upper part of the bag through the movable fingers; d. The suction cup of the bag feeding device stops sucking, the first telescopic cylinder contracts to make the suction cup mechanism retreat a distance away from the packaging bag surface, and the rotating shaft rotates to drive the first swing frame back to the vertical state, ready for the next suction of the packaging bag; e. The two sliding frames of the bag clamping device continue to move closer to each other for a distance, and the bag opening suction cups on both sides of the bag move closer to each other and absorb 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 opening nozzle downward, inserts the bag opening nozzle into the opened upper end of the packaging bag, and drives the two bag opening nozzles 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. The aluminum-plastic cover production equipment counts the output aluminum-plastic covers; i. When the predetermined number of aluminum-plastic caps has been placed in the packaging bag, the rotary cylinder of the unloading device drives the flexible switch plate to close the cross-section of the storage bin. The aluminum-plastic caps output by the subsequent production equipment are temporarily stored in the storage bin. The lower pressure cylinder resets to close the two bag openings. The lifting cylinder resets to drive the outer sleeve and the bag opening upward, so that the bag opening moves upward and 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 at the top of the packaging bag; 1. 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 movable 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, while the anti-roll bar lifts upward to prevent the bags from falling backward. The tray tilts forward and downward while the lifting plate lifts upward to unload the sealed bags to the output device in front. Then the anti-roll bar, tray, and lifting plate return to their original position. o. Repeat steps bn, and in step f, the rotary cylinder 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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