CN115557014A - Packaging equipment and packaging methods - Google Patents

Abstract

The invention discloses a packaging device and a packaging method, wherein the packaging device comprises a rack, and a bag opening mechanism is arranged on the rack and is used for opening PE bags flatly laid on a flat plate; the bag turning mechanism is used for rotating the opened PE bag to a state that the bag opening faces upwards; the first conveyor moves between a first height and a second height, and the conveying surface of the first conveyor is not higher than the bag turning mechanism at the first height; at the second height, the conveying surface of the PE bag is attached to or close to the bottom of the PE bag with the upward bag opening; and the bag opening processing mechanism is arranged above the first conveyor and is used for keeping the bag opening of the PE bag in an open state. The PE bag opening device enables the PE bag to be opened in a flat-paved state, the stability and the reliability of bag opening are guaranteed, the opened PE bag is turned over by 90 degrees and placed on the first conveyor, bag opening and charging operations are conducted separately, efficiency is improved beneficially, the bag opening processing mechanism enables the bag opening of the PE bag to be kept in a fully opened state, and stable charging is guaranteed.

Description

Packaging equipment and packaging methods

technical field

The invention relates to the field of digital intelligent manufacturing, in particular to packaging equipment and packaging methods for materials, especially polysilicon packaging.

Background technique

In various packaging operations, it is often necessary to put the materials in small packages into large PE bags, and then seal the large PE bags.

The Chinese invention patent application with the application publication number CN108545258A discloses an automatic secondary bagging equipment for bagged articles, which absorbs the flat PE bags through the vacuum suction head on the handling robot, and then rotates the PE bags to make the PE bags vertically state and place it on the bag opening robot to open the bag. In this structure, in order to prevent the PE bag from being skewed when it is between the first adsorption device and the second adsorption device and affect the stable bag opening, the bag opening robot The distance between the first adsorption device and the second adsorption device is relatively small, which makes it difficult for the PE bag to enter between the first adsorption device and the second adsorption device, especially when the PE bag is bent Sometimes, the PE bag does not effectively enter between the first adsorption device and the second adsorption device.

In addition, in this structure, the action of opening the bag and loading the material is carried out at one position, and the two actions cannot be carried out at the same time; at the same time, each time when packaging, the robot needs to grab the bag-shaped items first, and then absorb the flat PE bag. The two actions cannot be carried out at the same time, which leads to a reduction in packaging efficiency.

Finally, in the prior art, when the mouth of the PE bag is folded into an M shape, it is realized by setting an independent sealing and folding device downstream of the bag opening robot, which causes the sealing device to occupy additional horizontal space.

Contents of the invention

The object of the present invention is to provide a packaging device and a packaging method in order to solve the above-mentioned problems in the prior art.

The purpose of the present invention is achieved through the following technical solutions:

Packaging equipment, including racks, on which racks are located:

The bag opening mechanism is used to open the flat PE bag, which includes a flat plate for laying PE bags, an upper adsorption component and a lower adsorption component located on the upper and lower sides of the flat plate, and the lower adsorption component is provided on the flat plate The perforation through which the lower suction cup passes;

The bag turning mechanism, which is arranged beside the bag opening mechanism, includes a horizontal shaft rotatably arranged on the frame, the horizontal shaft is connected to the shaft drive assembly and its side is provided with a PE bag grabbing claw, the The shaft drive assembly drives the horizontal shaft to rotate so that the PE bag grabbing jaws can grab the PE bag opened by the bag opening mechanism and turn the PE bag opening from the state facing sideways to the opening upward state;

The first conveyor, which is arranged beside the bag turning mechanism, moves between the first height and the second height, and at the first height, its conveying surface is not higher than the bag turning mechanism; at the second height , where the conveying surface is attached or close to the bottom of the PE bag that is grasped by the gripping jaws of the PE bag and whose mouth is facing up;

A pocket opening processing mechanism, which is arranged above the first conveyor, is used to keep the pocket pockets of the PE bags on the first conveyor open.

Preferably, a PE bag supply mechanism is provided beside the bag opening mechanism, which is used to place the PE bag on the flat plate and between the upper and lower adsorption components.

Preferably, the shaft drive assembly drives a horizontal shaft through two cylinders to move the PE bag grabbing jaws between position one, position two, position three and position four, and at position one, the PE bag The grabbing jaw is located below the horizontal axis and remains vertical; at the second position, the PE bag grabbing jaw is kept horizontal and extends above the first conveyor; the third position is at Between the position one and the position two and close to the position one; the position four is located above the position two.

Preferably, the bag opening processing mechanism includes a lifting drive assembly arranged on the frame, the lifting drive assembly is connected to the carrier plate below and drives the carrier plate to lift, and there are two gaps on the carrier plate that are transported by the first The outside of the machine extends to the pole above the first conveyor, the extension direction of the pole is parallel to the conveying direction of the first conveyor, and the part of the pole located outside the carrier is provided with push-pull mechanism, the push-pull mechanism connects an expansion plate and drives the expansion plate to reciprocate and linearly translate. directly above the conveying surface of the first conveyor.

Preferably, a folding mechanism is also provided on one of the poles, and the folding mechanism includes two pressing plates, the pressing plates are perpendicular to the moving direction of the expansion plate, and the two pressing plates connect to the first conveyor. The distance on both sides is the same, and the two said platens drive the folding drive assembly which moves them synchronously.

Preferably, the rack is also provided with:

a second conveyor whose conveying surface is connected to the conveying surface of the first conveyor at the second height;

A bag opening plastic sealing mechanism, which is arranged above the second conveyor, is used for plastic sealing the bag mouth of the PE bag on the second conveyor.

Preferably, the bag opening plastic sealing mechanism includes a height adjustment assembly arranged on the frame, the bottom of the height adjustment assembly is connected to the frame and drives the frame to rise and fall, and the frame is provided with at least a first drive assembly, the first The driving assembly connects and drives the two hot-melt assemblies to realize the plastic sealing of the bag mouth of the PE bag on the second conveyor.

Preferably, the frame is further provided with a second driving assembly, the second driving assembly connects and drives two grippers to close the mouth of the PE bag on the second conveyor.

Preferably, each clamping member is provided with a set of vacuum suction cups, and the two sets of vacuum suction cups are arranged oppositely; the bag opening plastic sealing mechanism also includes a vacuum pumping assembly for vacuuming the PE bags on the second conveyor .

The packaging method at least includes the following steps:

S1, providing packaging equipment as described above;

S2, the bag opening mechanism starts to open a PE bag laid on the flat plate and located between the upper and lower adsorption components;

S3, the bag turning mechanism starts to grab the opened PE bag, and when the first conveyor is at the first height, rotate the PE bag by 90° so that the mouth of the bag faces upward;

S4, the first conveyor moves to a second height, and the bag turning mechanism releases the PE bag so that the PE bag is placed on the first conveyor;

S5, the pocket opening processing mechanism is activated to keep the pocket opening of the PE bag on the first conveyor open for loading.

The advantage of technical solution of the present invention is mainly reflected in:

The structure of the present invention allows the PE bag to be opened in a flat state, effectively avoiding the problems of opening the bag in a vertical state, ensuring the stability and reliability of the bag opening, and the control is simpler. The bag mechanism turns the opened PE bag over 90° and places it on the first conveyor, so that the bag opening and filling operations can be carried out separately, which is conducive to improving efficiency. A further design of the bag opening processing mechanism can effectively make the bag opening Maintain a fully open state to ensure stable loading.

The arrangement of the PE bag supply mechanism in the present invention can effectively enrich the functions of the equipment and improve the degree of automation.

The bag mouth processing mechanism of the present invention is also integrated with a folding mechanism, which can cooperate with the expansion plate to fold the pocket mouth of the PE bag into an M shape, thereby providing better basic conditions for subsequent stable and beautiful plastic sealing. At the same time, the folding mechanism It does not need to occupy additional horizontal space, and also saves a set of lifting mechanism, which can improve the integration of equipment.

The present invention adopts two air cylinders to drive the gripping jaws of the PE bag to switch between four positions, and the control is simple, the switching speed is fast, the stability is good, and the precision is high.

The present invention adopts the second conveyor to cooperate with the first conveyor, and sets the bag mouth plastic sealing mechanism on the second conveyor, which can realize the automatic sealing of the bag mouth, further enriches the functions, and realizes bag feeding, bag opening, bag filling, The automation of the whole process of bag opening processing and sealing.

The bag opening plastic sealing mechanism of the present invention has a high structural integration, takes up little space, and at the same time has good stability and high quality of plastic sealing.

The clamping part of the present invention is integrated with a vacuum suction cup, and at the same time, a vacuum assembly is provided on the bag mouth plastic sealing mechanism, so that the bag mouth can be fully opened so that the vacuum suction tube can smoothly enter the PE bag, ensuring the realization of vacuum pumping .

Description of drawings

Fig. 1 is the perspective view of the first viewing angle of the packaging equipment of the present invention, in which part of the structure of the frame is hidden;

Fig. 2 is a second perspective perspective view of the packaging equipment of the present invention, in which part of the structure of the frame is hidden;

Fig. 3 is a partial bottom view of the bag opening mechanism and the PE bag supply mechanism of the present invention (the feeder is hidden in the figure);

Fig. 4 is the perspective view of bag opening mechanism and PE bag supply mechanism of the present invention;

Fig. 5 is a perspective view of the bag turning mechanism of the present invention;

Fig. 6 is the front view of the bag turning mechanism of the present invention;

Figure 7 is an enlarged view of area A in Figure 5;

Fig. 8 is a side view of the bag turning mechanism of the present invention;

Fig. 9 is the front view of packaging equipment of the present invention;

Fig. 10 is a perspective view of the pocket processing mechanism of the present invention;

Fig. 11 is a side view of the pocket processing mechanism of the present invention;

Figure 12 is an enlarged view of area B in Figure 2;

Fig. 13 is a perspective view of the first angle of view of the bag opening plastic sealing mechanism of the present invention (partial structure of the frame is hidden in the figure);

Fig. 14 is a perspective view of a second angle of view of the bag opening plastic sealing mechanism of the present invention (partial structure of the frame is hidden in the figure);

Fig. 15 is a perspective view of the bag opening plastic sealing mechanism of the present invention with a first viewing angle of the bag opening clamping assembly and the vacuum pumping assembly;

Fig. 16 is a perspective view of the bag opening plastic sealing mechanism with a bag opening clamping assembly and a vacuuming assembly from a second perspective of the present invention.

detailed description

Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalent replacements or equivalent transformations fall within the protection scope of the present invention.

In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " The orientation or positional relationship indicated by "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation , constructed and operated in a particular orientation and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. Moreover, in the description of the solution, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

The packaging equipment disclosed by the present invention is set forth below in conjunction with the accompanying drawings, as shown in accompanying drawing 1 and accompanying drawing 2, it comprises frame a, is set on described frame a:

Bag opening mechanism b, which is used to open the PE bag laid flat on the flat plate;

Bag turning mechanism c, which is used to turn the PE bag opened by the bag opening mechanism b from the state where the mouth of the bag is facing sideways to the state where the mouth of the bag is facing upward;

The first conveyor d, which is arranged beside the bag turning mechanism c, moves between the first height and the second height, and at the first height, its conveying surface is not higher than the bag turning mechanism c; At the second height, its conveying surface fits or is close to the bottom of the PE bag with the mouth facing up;

A pocket processing mechanism e, which is arranged above the first conveyor d, is used to make the first

The mouth of the PE bag on the conveyor d remains open.

As shown in the accompanying drawing 1, the bag opening mechanism b is arranged on the right side of the underframe of the frame a, as shown in the accompanying drawings 3 and 4, the bag opening mechanism includes a The plate 1 and the upper adsorption assembly 3 and the lower adsorption assembly 2 located on the upper and lower sides of the plate 1 are provided with perforations for the lower suction cup 2a of the lower adsorption assembly 2 to pass through.

As shown in the accompanying drawing 1, the flat panel 1 is horizontally arranged on the rectangular frame of the chassis, as shown in the accompanying drawing 3, the lower suction cups 2a of the lower adsorption assembly 2 are four and distributed in a rectangular shape on the first On the connecting frame 2b, the first connecting frame 2b is arranged on the first air cylinder 2c, the first air cylinder 2c is connected to the bottom of the flat plate 1 through the fixing frame 2d, and the first air cylinder drives the lower suction cup 2a Moving in a direction perpendicular to the flat plate 1 , as shown in FIG. 4 , the flat plate 1 is provided with perforations 1a matching each of the lower suction cups 2a. Of course, the first cylinder 2c is not necessary, and the lower suction cup 2a can be directly arranged on the bottom of the flat panel 1 .

As shown in Figure 1, the upper adsorption assembly 3 is arranged on the upper stand above the underframe and above the flat plate 1, as shown in Figure 4, it includes a second cylinder 3a, the first The two cylinders 3a are connected to the suction cup frame 3b, and the suction cup frame 3b is provided with four upper suction cups 3c, and the positions of the upper suction cups 3c correspond to the positions of the lower suction cups 2a. When the bag needs to be opened, the cylinder shaft of the second cylinder 3a stretches out so that the upper suction cup 3c abuts against the top surface of the PE bag on the flat plate 1, and the upper suction cup 3c absorbs the top surface of the PE bag, and the The lower suction cup 2a absorbs the bottom surface of the PE bag, and then the cylinder shaft of the second cylinder 3a retracts, so that the upper suction cup 3c cooperates with the lower suction cup 2a to open the PE bag. At this time, the mouth of the PE bag faces the first Conveyor, so it is necessary to turn the PE bag to the state where the opening is facing upwards to facilitate loading.

Before opening the bag, it is necessary to place the unopened PE bag on the flat plate 1 in a flat state and between the upper and lower adsorption components. At this time, the upper suction cup 3c and the lower suction cup 2a adsorb the The area on the PE bag near the opening.

In one embodiment, the PE bags can be placed in the above positions one by one manually, and of course it can also be realized by automatic equipment.

In this embodiment, as shown in accompanying drawing 2, the supply of PE bag is realized by setting PE bag supply mechanism f, and described PE bag supply mechanism f is arranged on the side of bag opening mechanism, specifically is positioned at the right side of described bag opening mechanism. side.

As shown in accompanying drawings 3 and 4 , the PE bag supply mechanism f includes a transfer machine 10 , a feeder 30 , a first pushing mechanism 50 and a second pushing mechanism 70 .

As shown in Figure 4, the transfer machine 10 includes a set of vacuum suction heads 11 whose axis extends longitudinally, the vacuum suction heads 11 are arranged on a lifting frame 12, and the lifting frame 12 is connected to drive its lifting Lifting cylinder 13, the lifting cylinder 13 is arranged on a translation driving device 14, and the translation driving device 14 is fixed on the frame a, and the translation driving device 14 can be a sliding table cylinder, a linear servo module, etc., its Driving the lifting cylinder 13 to move between the first position and the second position along the conveying direction parallel to the first conveyor, at the first position, the vacuum suction head 11 can be sucked by the feeder 30 PE bag; at the second position, the vacuum suction head 11 can move the PE bag it absorbs onto the flat plate 1 and be on the moving path of the first push rod of the first pushing mechanism 50 .

As shown in accompanying drawing 4, described feeder 30 can be a belt conveyor, is provided with the PE bag restriction groove 31 that matches with unopened PE bag on its conveyer belt, and described PE bag restriction groove 31 is described The conveyor belt of the belt conveyor is surrounded by a group of rectangularly distributed blocks 32, and the unopened PE bag is limited in the limiting groove PE bag limiting groove 31 in a flat state and moves toward the said limiting groove. The transfer machine 10 performs transportation. Of course, in other embodiments, the feeder 30 can also be the same as the prior art, so that the PE bags are stacked in a trough in a flat state, and the trough is connected to a lifting mechanism that drives its lifting, so The feeder 30 is located directly below a set of vacuum suction heads 11 at the first position, and when the transfer machine 10 removes one or more of the stacked PE bags, the lifting mechanism makes the chute Raise to a certain height, so that the transfer machine 10 can continue to suck the PE bags in the trough.

As shown in accompanying drawings 3 and 4, the first pushing mechanism 50 includes a set of first push rods 51, the first push rods 51 are vertical to the flat plate 1, of course, the first push rods 51 are also It can be a push block or the like located above the flat plate, the first push rod 51 is connected to a first push drive mechanism 52 that drives its translation, and the moving direction of the first push rod 51 is parallel to the translation of the lifting cylinder 13 direction, the first push drive mechanism 52 can be an air cylinder or a linear servo module, etc., and the first push drive mechanism can be arranged at the bottom of the tablet 1 or above the tablet 1, when the When the first push drive mechanism is arranged at the bottom of the flat panel 1, the flat panel 1 is provided with a first elongated hole 53 for the first push rod 51 to move, and the extension of the first elongated hole 53 The direction is parallel to the conveying direction of the first conveyor, and the first push mechanism 50 pushes the PE bag located on the left side of the first push rod 51 to the movement of the second push rod of the second push mechanism 70 on the path.

As shown in accompanying drawing 3, accompanying drawing 4, the structure of described second pushing mechanism 70 is identical with the structure of described first pushing mechanism 50, and it comprises a group of second push rod 71 and drives described second push rod 71 The second push drive mechanism 72, the moving direction of the second push rod 71 is perpendicular to the moving direction of the first push rod 51, and the second push rod 71 will be pushed to its working area by the first push mechanism 50 The PE bag is pushed between the upper adsorption assembly 3 and the lower adsorption assembly 2 to open the bag. The second push drive mechanism 72 can be an air cylinder or a linear servo module. 71 moves the second elongated hole 75, the extension direction of the second elongated hole 75 is perpendicular to the extension direction of the first elongated hole.

As shown in Figure 4, two guide ribs 54 are provided on the flat panel 1 to prevent positional deviation of the PE bag when it is driven by the first pushing mechanism 50, and the flat panel 1 is also provided with There is a limit rib 73 for limiting the movement of the PE bag to a position, the limit rib 73 is perpendicular to the extension direction of the guide rib 54, and is close to the guide rib 54 of the bag opening mechanism b A guide block 74 is provided at the end of the bag, and the distance between the guide block 74 and the limit rib 73 is equivalent to the width of the PE bag.

When supplying PE bags, the feeder 30 transports the PE bags to its output end one by one and stops, the transfer machine 10 drives the vacuum suction head 11 on it to absorb the PE bags at the end of the feeder 30, Then move to the front of the first push rod 51, the first push drive mechanism 52 drives the first push rod 51 to move toward the second push mechanism 70 and push the PE bag to the first push rod 51. In front of the second push rod 71, the second push drive mechanism 72 drives the second push rod 71 to move to the direction of the bag opening mechanism b until the PE bag is blocked by the stopper 90. At this time, the PE bag covers all the perforation, the upper adsorption component and the lower adsorption component can perform adsorption to open the bag.

As shown in Figure 1, the bag turning mechanism c is arranged beside the upper adsorption assembly 3, and the bag turning mechanism c includes a shaft seat 200 arranged on the left side of the upper adsorption assembly, as shown in Figure 5 , the left side of the shaft base 200 is rotatably provided with a horizontal shaft 400, a PE bag grabbing jaw 600 disposed on the side of the horizontal shaft 400, and a shaft driving assembly 800 for driving the horizontal shaft 400 to rotate. The bag turning mechanism c grabs the opened PE bag through the PE bag grasping jaw 600, and then drives the horizontal shaft 400 to rotate by 90° through the shaft drive assembly 800, so that the PE bag with the opening facing sideways rotates to The opening faces upwards.

As shown in the accompanying drawing 5, the shaft seat 200 includes a vertical plate 201 fixed on the side of the upper stand of the frame, and the vertical plate 201 is provided with two bearings with seat on the side facing the first conveyor 202 , the horizontal shaft 400 is rotatably arranged on two bearings with seats 202 .

As shown in FIG. 6 , the PE bag grabbing jaw 600 includes two mounting arms 601 pivotally connected to the side of the horizontal shaft 400, and the shaft 602 around which the two mounting arms 601 rotate is connected to the The horizontal axis 400 is vertical, the far end of each of the installation arms 601 is connected to a support plate 603, and the support plate is located on the side of the installation arm facing the upper adsorption assembly 3, and the two installation arms 601 also An opening and closing cylinder 604 is respectively connected, and the opening and closing cylinder 604 drives the two mounting arms 601 to rotate synchronously and in reverse. Of course, the opening and closing cylinder 604 can also be a feasible device such as a servo linear module or a hydraulic cylinder. parts, and their other ends are respectively hinged on the inner side of one of the mounting arms 601 (the opposite side of the two mounting arms). When the two support plates 603 are stretched into the PE bag, the cylinder shafts of the two opening and closing cylinders stretch out, and the two support plates 603 can be opened to resist the two short side films of the PE bag. Connect and make the sack opening of PE bag keep open state; When the cylinder shaft of two described opening and closing cylinders retracts, two described support plates 603 are closed, at this moment two support plates 603 can be stretched into easily In and out of PE bags. Of course, the two opening and closing cylinders can also be arranged on the outer sides of the two mounting arms.

As shown in Figure 6, in order to prevent the PE bag from falling off from the two support plates 603 during the rotation process, a clamping assembly 605 is also provided on the outside of the mounting arm 601, and the clamping assembly 605 Cooperate with the support plate 603 to clamp the PE bag.

As shown in Figure 6, the clamping assembly 605 includes a rotating arm 606 pivotally connected to the mounting arm 601, the rotating arm 606 is connected to a clamping rod 608 and a clamping cylinder 607, and the rotating arm 606 is approximately It is L-shaped, its upper end is connected to a clamping cylinder 607 , its middle is connected to the hinged seat outside the mounting arm 601 , and its lower end is connected to the clamping rod 608 . The upper end of the clamping cylinder 607 is hinged on the outer surface of the mounting arm 601, and its lower end is pivotally connected to the upper end of the rotating arm 606. The clamping cylinder 607 drives the rotating arm 606 to rotate so that the clamping The clamping rod 608 moves to be close to the outer surface of the supporting plate 603 due to the distance between the supporting plate 603; when the cylinder shafts of the two clamping cylinders 607 retract, the clamping rod 608 and the supporting plate 603 to keep the distance, at this time, the two shorter side walls of the PE bag can enter between the clamping rod 608 and the support plate; the clamping rod 608 fits with the support plate 603 and will be located between them The PE bag between them is clamped; when the cylinder shafts of the two clamping cylinders 607 are extended, the clamping rod 608 fits with the support plate 603 and clamps the PE bag between them. Of course, the clamping cylinder 607 may also be a hydraulic cylinder or an electric push rod.

As shown in Figure 7, in order to ensure the stability of the clamping, an arc-shaped groove 609 is formed on the outer surface of the support plate 603, and the extension direction of the arc-shaped groove 609 is the same as that when the mounting arm 601 rotates. The axis around it is parallel, and a round tube 610 is set on the clamping rod 608. The round tube 610 can be a rubber tube, a silicone tube, etc., and the round tube 610 can be embedded in the arc-shaped groove 609, so that When clamping, the clamping rod 608 can embed part of the PE bag into the arc groove 609, so as to ensure that the plastic will not fall off between the clamping rod 608 and the support plate 603, and at the same time, the PE bag can Protect the bag from visible indentations.

As shown in accompanying drawing 5, accompanying drawing 8, described shaft drive assembly 800 comprises L-shaped swing arm 802, and the first end of described L-shaped swing arm 802 is fixedly connected with one end of described horizontal shaft 400, and its second end is located at The outside of the horizontal shaft 400 is hinged to the cylinder shaft of the first driving cylinder 801 , the first driving cylinder 801 is obliquely arranged above the horizontal shaft 400 , and connected to the L-shaped swing arm 802 One end is lower, and the first driving cylinder 801 is connected to the L-shaped swing arm 802 through a first rod end joint bearing 808 . The other end of the first driving cylinder 801 is pivotally connected to the middle position of the turntable 803. The turntable 803 includes a main rod 809 and a lower rod 810 and an upper rod 811 vertically connected to the same side of the main rod 809. The connection point between a driving cylinder 801 and the main rod 809 is located between the lower rod 810 and the upper rod 811, the lower rod 810 of the turntable 803 is connected to the secondary rotating shaft 804 parallel to the horizontal axis 400, and the two The stage rotating shaft 804 is arranged on the fixing seat 813 . The upper rod 811 is connected to the second drive cylinder 805 that drives the turntable 803 to rotate around the secondary shaft 804 , and one end of the second drive cylinder 805 is connected to the turnframe 803 through a second rod end joint bearing 812 The other end of the second drive cylinder 805 is hinged on a fixed mounting part 814, and the mounting part 814 is fixed on the frame a.

Of course, the first driving cylinder 801 and the second driving cylinder can also be replaced by servo linear modules, hydraulic cylinders and the like.

In actual use, the shaft driving assembly 800 drives the PE bag grabbing jaw 600 to move among position one, position two, position three and position four.

When the cylinder shaft of the first driving cylinder 801 stretches out and the cylinder shaft of the second driving cylinder retracts, the PE bag grabbing jaws 600 are located at one position. At this time, the PE bag grabbing The gripper 600 is below the horizontal axis 400 and remains vertical, and the support plate 603 of the PE bag grabbing gripper 600 can extend into the PE bag opened by the bag opening mechanism.

When the cylinder shaft of the first driving cylinder 801 is retracted, and the cylinder shaft of the second driving cylinder is retracted, the PE bag grabbing jaw 600 is located at position two. At this time, the PE bag grabbing The jaw 600 rotates 90 degrees relative to the PE bag grasping jaw 600 at a position and maintains a horizontal state. At this time, the PE bag grasping jaw can turn the PE bag it grasps until the opening faces upward and the gap is at the first position. Above the conveyor d.

When the cylinder shaft of the first driving cylinder 801 is stretched out, and the cylinder shaft of the second driving cylinder is stretched out, the PE bag grabbing jaw 600 is located at position three, and the position three is located at position one and position three. Between the two and close to the first position, at this time, the support plate 603 of the PE bag grasping jaw 600 is located in front of the opening of the opened PE bag and waits for the PE bag to be grasped.

When the cylinder shaft of the first driving cylinder 801 is retracted and the cylinder shaft of the second driving cylinder is stretched out, the PE bag grabbing jaw 600 is located at position four, and the position four is located at the position two. Above, at this time, the PE bag grasps the support plate 603 of the jaws 600 to move out of the PE bag with the opening facing upwards. After being removed, the PE bag is accepted by the first conveyor d.

As shown in Figure 9, the first conveyor d can be a known belt conveyor or roller conveyor, preferably a belt conveyor, and the belt conveyor is connected to drive it between the first height and the second height. The jacking mechanism i that moves between, the jacking mechanism i includes a linear drive device i2 fixed on a pallet i1, the linear drive device i2 can be an air cylinder, an electric push rod or a hydraulic cylinder, etc., the linear drive The device i2 is connected to the bottom of the first conveyor d, and the bottom of the first conveyor d is also connected to the guide shaft i3, and the guide shaft i3 is slidably inserted into the sleeve i4 provided on the pallet i1 , the pallet i1 is fixed on the frame a. The lifting and lowering of the first conveyor d can effectively avoid interference with the rotation of the PE bag grabbing jaws 600 .

When the PE bag with the opening facing upwards is located on the first conveyor d, it can be loaded. The specific operation of loading can be the same as the prior art, using a loading robot. The specific structure is as follows: Known technology, not repeat them here.

During bagging, the bag mouth of the PE bag on the first conveyor d is likely to fail to keep open under the action of external force such as gravity or external collision, which will seriously affect the effective realization of the bagging operation. Therefore, the pocket opening is kept open by the pocket handling mechanism e.

As shown in accompanying drawing 1 and accompanying drawing 10, the bag opening processing mechanism e includes a lifting drive assembly e1 suspended on the frame a, and the lifting driving assembly e1 includes a lifting driving cylinder fixed at least on the frame a e2, the cylinder shaft of the lifting drive cylinder e2 faces and connects to the carrier plate e3 below it, the lifting drive assembly also includes a guide mechanism e4 connected to the carrier plate e3, and the carrier plate e3 is arranged on the second On the outside of the output end of a conveyor d, two struts e5 extending from the outside of the first conveyor d to the top of the first conveyor d are provided in the gap on the carrier plate e3, and the two struts e5 are symmetrically distributed on both sides of the conveying surface of the first conveyor d, and the extension direction of the struts e5 is parallel to the conveying direction of the first conveyor d. The part of the pole e5 extending to the first conveyor d is provided with a push-pull mechanism e6. The push-pull mechanism e6 is connected to an expansion plate e7 and drives the expansion plate e7 to reciprocate and linearly translate. The two expansion plates e7 are arranged oppositely and their moving direction is perpendicular to the conveying direction of the first conveyor d, and the two expansion plates e7 are located directly above the conveying surface of the first conveyor d.

As shown in Figure 10, the push-pull mechanism e6 includes a push-pull cylinder e8, the push-pull cylinder e8 is arranged on the vertical plate e9 at the bottom of the pole e5, and the cylinder shaft of the push-pull cylinder e8 is connected through an adapter frame e10 The expansion plate e7 and the adapter frame e10 are connected to a horizontal guide rod, and the horizontal guide rod is slidably arranged in the guide sleeve provided on the vertical plate e9. When the cylinder shaft of the push-pull cylinder e8 is stretched out, the The expansion plate e7 is close to the width centerline d1 of the first conveyor d (the distance from the width centerline d1 to both sides of the conveyor belt of the first conveyor d is the same), which can effectively ensure that the Expansion plate e7 protrudes into said PE bag. At the same time, the two expansion plates e7 are a bent plate, and the upper bending parts e11 of the two expansion plates e7 form a splayed mouth with a wide upper end and a narrow lower end, so that the discharging action can be guided, and the two When the cylinder shaft of the push-pull cylinder is stretched out, the two expansion plates move to or approach the width center line d1, so that the two expansion plates are attached or close to each other.

As shown in accompanying drawing 10 and accompanying drawing 11, folding mechanism e12 is also provided on the said pole e5 on the left side, and described folding mechanism e12 is used for making the two short side films of described PE bag close to the bag opening The area bends inwards in a V shape. The folding mechanism e12 includes two pressing plates e13, and the two pressing plates e13 are located in the middle position between the two poles e5. The moving direction of the expansion plate e7 is vertical, and the two pressing plates e13 drive their synchronously moving folding drive assembly, which includes two pen-shaped air cylinders e14, and the two pen-shaped air cylinders e14 are fixed on the vertical plate e9 The second connecting frame e17 on the outer surface is connected to a sliding frame e15 respectively, and the sliding frame e15 is slidably arranged on the guide rail e16 on the second connecting frame e17, and each of the sliding frames e15 is connected to a pressing plate e13, the bottom of the pressing plate e13 is lower than the bottom of the expanding plate e7. When the cylinder shafts of the two pen-shaped cylinders e14 are stretched out, the two pressing plates e13 are located outside the two ends of the first conveyor d, which will not affect the charging operation at this time. The bottom of the adapter frame e10 is provided with a push block, and a distance is kept between the push block and the vertical part of the expansion plate e7. When the cylinder shaft of the push-pull cylinder e8 is stretched out, the push block e18 Located on the outside of the PE bag on the first conveyor.

After bagging is completed, the cylinder shafts of the two pen-shaped cylinders e14 are retracted. At this time, the two pressing plates e13 are in contact with the outsides of the two short side films of the PE bag and push the two side wall films. The area close to the opening is bent inward to form a V shape, and the cylinder shafts of the two push-pull cylinders e8 are stretched out so that the pushing block pushes the area near the top opening of the two long side films of the PE bag to bend inwardly, Therefore, the area near the opening of the PE bag is bent to form an M-shaped mouth.

The packaging equipment also includes a control device. The control device can control the work of each mechanism to perform automatic packaging according to a predetermined program and in combination with the sensors set at the set positions. The control principle of the control device is a known technology and will not be described here. repeat.

Example 2

After the filling is completed and the bag mouth is processed, the bag mouth needs to be sealed.

Therefore, as shown in accompanying drawing 2, present embodiment is also provided with on the described frame a on the basis of above-mentioned embodiment 1:

The second conveyor g, the conveying surface of the second conveyor g is connected with the conveying surface of the first conveyor d at the second height;

A bag mouth plastic sealing mechanism h, which is arranged above the second conveyor g and located downstream of the bag mouth processing mechanism e, and is used for plastic sealing the bag mouth of the PE bag on the second conveyor g .

The second conveyor g can likewise be a known roller conveyor or a belt conveyor, preferably a belt conveyor. The conveying direction of the second conveyor g is the same as the conveying direction of the first conveyor d, and the PE bags that have completed bagging and bag opening processing are conveyed to the second conveyor d under the conveyance of the first conveyor d. Conveyor g, the second conveyor g transports the PE bag to the bag mouth plastic sealing mechanism h for sealing.

As shown in accompanying drawing 12, accompanying drawing 13, described bag opening plastic sealing mechanism h can adopt known plastic sealing machine to realize, and described bag mouth plastic sealing mechanism h comprises height adjustment assembly h1 that is arranged on frame a, described The bottom of the height adjustment component h1 is connected to the frame 100 and drives the frame 100 up and down. The frame 100 is equipped with a first drive component 300 to connect and drive two hot melt components to realize the plastic sealing of the PE bag on the second conveyor g. .

As shown in Figure 12, the height adjustment assembly h1 includes a height adjustment cylinder h2 arranged on the upper stand of the frame a, the cylinder axis of the height adjustment cylinder h2 faces and is connected to a The sliding frame h3 is slidably arranged on the vertical rail h4 provided on the stand, and the bottom of the sliding frame h3 is connected to the frame 100 .

As shown in Figure 13, the frame 100 includes two parallel main beams 101 and two connecting beams 102 vertically connected between the two main beams 101, the extension direction of the two main beams 101 is the same as the The conveying direction of the second conveyor g is parallel and their two ends are respectively connected by end plates 103 .

The first driving assembly 300 may be a linear movement mechanism respectively connected to one hot-melt assembly, and the two linear movement mechanisms drive the two hot-melt assemblies to translate along the conveying direction perpendicular to the second conveyor g to realize opening. close.

As shown in FIG. 13 , the first drive assembly 300 includes two parallel and rotatably arranged main shafts 301 between the two end plates of the frame 100 , and the two main shafts 301 are rotatable and of equal height through bearings. Installed at the middle position of the two end plates 103 , the distance between the two main beams 301 can be set as required, which is not described here, and they are located below the two main beams 101 . Each of the main shafts 301 is connected to a hot-melt assembly 500 located below it, and the main shaft 301 is connected to an autorotation drive assembly 300 that drives its rotation. The hot melt assembly 500 swings synchronously to realize opening and closing.

In one embodiment, the main shaft can be driven to rotate by an autorotation drive assembly composed of a motor and a gear reduction mechanism.

In this embodiment, as shown in FIG. 13 , the autorotation driving assembly includes an upper cylinder 302 , and the upper air cylinder 302 connects the two main shafts through a first linkage assembly 303 and drives the two main shafts to rotate.

As shown in accompanying drawings 13 and 14, the number of the upper cylinder 302 may be only one, preferably two upper cylinders 302, which are arranged on the top of a main beam 101 in an inclined and rotatable manner, The cylinder shafts of the two upper air cylinders 302 face downward and the heads are located between the two main beams 101. The cylinder body of each upper air cylinder 302 is rotatably arranged on the hinged seat 304 on the main beam 101, and connects the cylinder body and the main beam 101. The rotation axis of the hinge base 304 is parallel to the main shaft 301 . The cylinder shaft of each upper cylinder 302 is connected to a first linkage assembly 303, and the two first linkage assemblies 303 are connected to both ends of the two main shafts 301, which can effectively ensure the stability and reliability of the drive.

As shown in accompanying drawings 13 and 14, the first linkage assembly 303 includes a first swing arm 305, the first swing arm 305 is roughly L-shaped, and of course it can also be other feasible shapes, such as T-shape, etc. The upper end 308 inside the first swing arm 305 is pivotally connected to the cylinder shaft of the upper cylinder 302. More preferably, the cylinder shaft of the upper cylinder 302 is connected to the first swing arm through a third rod end joint bearing 309. 305 is pivotally connected; the middle part of the first swing arm 305 is connected to the main shaft 301, specifically sleeved and clamped on the main shaft 301; the lower end 310 inside the first swing arm 305 is connected to one end of the linkage arm 306 Pivot connection, one end of the linkage arm 306 close to the upper cylinder 302 is higher than its opposite end, the other end of the linkage arm 306 is pivotally connected to the inner end of the second swing arm 307, and the second swing arm 307 is connected to the other main shaft 301 , specifically sleeved and clipped on the other main shaft 301 . The third connecting shaft 311 connecting the linkage arm 306 and the second swing arm 307 is located at the first connecting shaft 312 connecting the first swing arm 305 and the upper cylinder 302 and connecting the first swing arm 305 and the linkage arm 306 Between the second connecting shaft 313.

When the cylinder shaft of the upper cylinder is extended and retracted, the first swing arm 305 drives the rotating shaft connected to it to rotate, and the main shaft 301 drives the linkage arm 306 and then drives the second swing arm 307 to make the other One of the main shafts 301 rotates on its own, and two of the main shafts 301 rotate synchronously and in opposite directions so as to open and close the two hot-melt assemblies 500 connected to them.

As shown in Figure 14, each of the main shafts 301 can be connected to the hot melt assembly 500 below it through two swing arms near its two ends, and a T-shaped piece is rotatably connected to the lower end of each swing arm 314 315, the hot melt assembly 500 is connected between the two T-shaped pieces 315 of the two first linkage components, and the T-shaped piece 315 is also pivotally connected to the lower end of a fine-tuning arm 316, the fine-tuning arm 316 The upper end is pivotally connected to the connecting seat 317 on the frame 100 , the extension direction of the fine adjustment arm 316 is parallel to the extension direction of the swing arm 314 and is located outside the swing arm 314 . When the main shaft 301 drives the swing arm 314 to rotate, while the T-shaped piece 315 rotates with the swing arm 314, the fine-tuning arm 316 can drive the T-shaped piece 315 to rotate relative to the swing arm 314 , so that when the two hot-melt components 500 are in the closed state, the opposite surfaces of their two hot-melt heads are parallel and vertical, which can ensure that the hot-melt heads are in full contact with the plastic bag and avoid bending and deformation of the plastic bag, thereby To achieve effective plastic sealing.

As shown in accompanying drawing 14, the two ends of described fine-tuning arm 316 are connected described T-shaped piece 315 and connecting seat 317 by two fourth rod-end joint bearings 318, can make fine-tuning arm 316 have greater movable freedom like this. degree, so that the hot-melt head can fit better with the PE bag.

Before the two hot-melt components are closed, the mouth of the PE bag needs to be closed first so that the hot-melt components can be stably heat-molded. Therefore, as shown in FIG. 15 , the frame is also provided with a pocket clamping assembly 700 , and the pocket clamping assembly 700 includes a second driving assembly 702 provided on the frame 100 , and the second The driving assembly 702 connects and drives the two grippers 701 to close the opening of the PE bag on the second conveyor g. The second drive assembly can use two air cylinders to drive the two grippers to translate in a direction perpendicular to the conveying direction of the second conveyor g to realize opening and closing.

As shown in Figure 15 and Figure 16, the second drive assembly 702 includes a lower cylinder 703 and a second linkage assembly 704, the lower cylinder 703 is arranged on the frame 100 and connected to the second linkage assembly 704, so The second linkage assembly 704 connects the two main shafts 301 and the two clamping pieces 701, and the second linkage assembly 704 drives the two clamping pieces 701 to open and close under the drive of the lower cylinder 703. . The upper cylinder and the lower cylinder can also be electric push rods, linear motors, hydraulic cylinders and the like.

As shown in Figure 15 and Figure 16, each of the clamping pieces 701 is a cuboid block, and each of the clamping pieces 701 is provided with an escape hole 705 for the hot melt assembly 500 to pass through Of course, the clip 701 can also be located below or above the hot melt assembly 500 as a whole. At the same time, guide plates 706 are respectively provided at the ends of the two clamping pieces 701 facing the first conveyor d, the two guide plates 706 are distributed in a figure-eight or wedge shape, and the two guide plates 706 are far away from The distance between the distal ends of the clamping pieces 701 is greater than the distance between their proximal ends, so that the PE bag can smoothly enter between the two clamping pieces 701 .

As shown in Figure 16, the number of the lower cylinder 703 can be only one, preferably two cylinders, the two lower cylinders 703 are arranged obliquely, and their higher ends are pivotally connected to the mounting seat on the side of the main beam 101 707, and the shaft connecting the lower cylinder 703 and the mounting seat 707 is parallel to the main shaft 301, the lower end of the lower cylinder 703 is pivotally connected to a second linkage assembly 704, and the two second linkage assemblies 704 is connected to both ends of the two main shafts 301 and located outside the two end plates, which can effectively ensure the stability of the drive.

As shown in Figure 16, the second linkage assembly 704 includes a first swing arm 708, a second swing arm 709 and an intermediate swing arm 710, and the first swing arm 708 is rotatably arranged on a main shaft through a bearing. 301 and its lower end is connected to a clamping piece 701, the second swing arm 709 is rotatably arranged on the other end of the main shaft 301 through a bearing and its lower end is connected to another clamping piece 701, said The first swing arm 708 and the second swing arm 709 are connected through the middle swing arm 710 between them, and the middle swing arm 710 is pivotally connected to the first connecting part 721 inside the first swing arm 708 and the second swing arm 709 inside the second connection part 722, the connection point between the middle swing arm 710 and the first connection part 721 is higher than the connection point between the middle swing arm and the second connection part 722, the first The connecting block 719 at the inner middle of the swing arm 708 or the second swing arm 709 is pivotally connected to the lower cylinder 703. Preferably, the lower cylinder 703 is connected to the first swing arm 708 through the fifth rod end joint bearing 711 , the lower cylinder 703 drives the first swing arm 708 and the second swing arm 709 to rotate synchronously around the respective connected main shaft 301 and the rotation direction of the first swing arm 708 or the second swing arm 709 is opposite.

As shown in Figure 16, the lower end of the first swing arm 708 is rotatably connected to the first rotating member 712, the first rotating member 712 is approximately L-shaped, and the middle part of the first rotating member 712 is connected to the The lower end of the first swing arm 708, the lower end of the first rotating member 712 is connected to a clamping member 701 located inside it, and the upper end of the first rotating member 712 is connected to a first adjusting rod 713 located outside it. The extension direction of the first adjustment rod 713 is parallel to the length direction of the first trunk 714 of the first swing arm 708 , and its upper end is pivotally connected to the frame 100 , specifically to the outside of the end plate of the frame.

As shown in Figure 16, the lower end of the second swing arm 709 is rotatably connected to the second rotating member 716, and the second rotating member 716 is connected to another clamping member 701 located inside it and a clamping member 701 located outside it. The second adjustment rod 717, the extension direction of the second adjustment rod 717 is parallel to the length direction of the second trunk 718 of the second swing arm 709, and its upper end is pivotally connected to the frame 100, specifically on the outside of the end plate of the frame.

As shown in Figure 16, both ends of the first adjustment rod 713 are connected to the end plate and the first swing arm 708 through the sixth rod end joint bearing 723, and the two ends of the second adjustment rod 717 are respectively passed through the sixth rod end joint bearing 723. Seven rod-end joint bearings 724 are connected to the end plate and the second rotating member 716 .

As shown in Figure 16, before sealing, it is often necessary to vacuumize the PE bag. Correspondingly, the frame 100 is still provided with a vacuum assembly 900, and the vacuum assembly 900 includes a vacuum suction pipe 901 and a driving mechanism. The suction head driving device 902 for the vacuum suction tube 901 to move up and down, the vacuum suction tube 901 is located between the two clamping parts in the open state and can move below the hot melt assembly, the vacuum suction tube 901 has The flat section 903 and the round pipe section 904 above the flat section 903, the round pipe section 904 is connected to the suction head driving device 902 through an adapter block 905, and the suction head driving device 902 is arranged on the main beam 101 On the top plate 104, the suction head driving device 902 is a device capable of linear movement, such as a cylinder, a hydraulic cylinder, a linear motor, etc., preferably, the suction head driving device 902 is a cylinder, which is vertically arranged on the On the stand 906 above the top plate 104 , the adapter block 905 is slidably disposed on the guide rail 907 provided on the stand 906 .

As shown in Figure 16, in order to ensure that the vacuum suction pipe 901 of the vacuum pumping assembly 900 can effectively extend into the PE bag, each of the clamping parts 701 is also provided with a thermal The vacuum suction cup 715 above the melting assembly 500, when the bag opening drive mechanism 702 drives the two clamping parts 701 to close, the vacuum suction cups 715 on the two clamping parts 701 are connected to the opposite sides of the PE bag The outer wall is bonded, and the bonding position of the vacuum suction cup 715 and the PE bag is close to the mouth of the PE bag. At this time, two sets of vacuum suction cups 715 are vacuumed, and then, the bag opening drive mechanism 702 drives the two clamping parts 701 to open, so that the vacuum suction cups 715 can drive the opening of the PE bag to open to a certain extent. After opening, The vacuum suction pipe 901 of the vacuum assembly 900 can be inserted into the PE bag. After the vacuum suction pipe 901 is inserted, the bag opening drive mechanism 702 drives the two bags again. The gripper 701 is closed, at this time, the sack of the PE bag is closed, then the PE bag can be vacuumed through the vacuum suction pipe 901, and the vacuum suction pipe 901 is vacuumed from the PE bag after vacuuming. Then, the first driving assembly 300 drives the two hot-melt assemblies 500 to close for plastic sealing.

Example 3

This embodiment discloses a packaging method, which is characterized in that it includes at least the following steps:

S1, providing the packaging equipment of the above embodiment;

S2, place a flat PE bag at the bag opening mechanism b, and when it is determined that there is a PE bag at the bag opening mechanism b, the upper suction cup 3c of the upper adsorption component 3 of the bag opening mechanism b moves down and is adsorbed on the flat plate 1 On the top surface of a PE bag, the lower suction cup 2a absorbs the bottom surface of the PE bag, and then the second cylinder 3a drives the upper suction cup 3c to move up to open the PE bag. The PE bag is placed at the bag opening mechanism and can be realized by the above-mentioned PE bag supply mechanism.

S3, the bag turning mechanism c starts to grab the opened PE bag, and when the first conveyor d is at the first height, rotates the PE bag by 90° so that the mouth of the bag faces upward.

Specifically, when the bag opening mechanism b opens the bag, the PE bag grasping jaw 600 is held at position three and the cylinder shafts of the two opening and closing cylinders are retracted to keep the two support plates in a closed state. After the PE bag is opened, the shaft driving assembly 800 drives the horizontal shaft 400 to rotate to make the PE bag grasping jaw 600 rotate to a position, the support plate moves into the PE bag, and then, the opening and closing The cylinder shaft of the air cylinder is stretched out, and the support plate is supported on the inner side of the two short side films of the PE bag. The two short side membranes of the PE bag. Next, the shaft driving assembly 800 drives the horizontal shaft 400 to rotate by 90° so that the PE bag grabbing jaw 600 at the first position rotates to the second position, at this time, the PE bag grabbing jaw grabs The PE bag is turned 90° to the state with the opening facing upwards.

S4, the first conveyor d moves to a second height, and the bag turning mechanism c releases the PE bag so that the PE bag is placed on the first conveyor d.

Specifically, the lifting mechanism i drives the first conveyor d to move from the first height to the second height. At this time, the first conveyor d supports the PE bag, and the PE bag grabbing clip The claw 600 and the clamping assembly act in reverse to release the PE bag (that is, the clamping rod is opened and the support plate is closed), and then the shaft drive assembly 800 drives the horizontal shaft 400 to rotate to make the PE bag grabbing clamp The jaw 600 rotates from the second position to the fourth position, and the support plate of the PE bag grabbing jaw 600 withdraws from the PE bag.

After the PE bag is located on the first conveyor, the first conveyor can be lowered to the first height, and at the same time, the PE bag grabbing jaw 600 of the bag turning mechanism c rotates to position three and waits for grabbing PE bag.

S5, the pocket opening processing mechanism e is activated to keep the pocket opening of the PE bag on the first conveyor d open for loading. Specifically, the lifting drive assembly e1 drives the carrier plate e3 to move down, and moves the two expansion plates e7 into the PE bag, and then, the cylinder shaft of the push-pull cylinder e8 of the push-pull mechanism e6 retracts, The two expansion plates e7 are moved in opposite directions, so that the two expansion plates e7 keep the mouth of the PE bag open.

At this point, the material can be loaded into the PE bag by manual or automatic equipment.

After the filling is completed, the pocket opening processing mechanism e starts to fold the pocket pocket of the PE bag.

Specifically, after the loading is completed, the cylinder shaft of the push-pull cylinder e8 is stretched out, so that the two expansion plates e7 move toward each other, and then, the lifting drive assembly e1 drives the carrier plate e3 to rise to make the two expansion plates e7 moves to the outside of the PE bag, subsequently, the cylinder shafts of the two push-pull cylinders e8 retract, the expansion plate e7 moves to the outside of the two long side films of the PE bag, and then the lifting drive The component e1 drives the carrier plate e3 to descend, and then the cylinder shafts of the two pen-shaped cylinders e14 retract, so that the two pressing plates e13 move from the outside of the PE bag to the two short side films of the PE bag And drive the two short side membranes of the PE bag to bend inwardly into a V-shape near the bag mouth, and then, the cylinder shafts of the two push-pull cylinders stretch out to make the two expansion plates e7 push the PE bag The regions near the mouth of the two long side films of the PE bag are pressed together, so that the mouth of the PE bag is M-shaped.

After the pocket opening is folded, the first conveyor d transports the PE bag on it to the second conveyor g, and the second conveyor g transports the PE bag imported thereon to the pocket mouth for plastic sealing. Between the two clamps of mechanism h. Then, the cylinder shafts of the two lower air cylinders stretch out, and the two clamping parts clamp and close the bag mouth of the PE bag on the second conveyor g. Then the cylinder shafts of the two upper cylinders are stretched out to close the two hot-melt assemblies, and then the hot-melt assemblies are heated to make the area clamped by the clamping parts plastic-sealed to achieve sealing.

Further, when the bag opening plastic sealing mechanism has a vacuum assembly, when the PE bag is transported between the two clamping parts, the two clamping parts are first closed to the two sets of vacuum suction cups and the two sides of the PE bag. The outer surfaces of the two long side films are close to each other, and then the vacuum suction cups vacuum the outer surfaces of the two long side films of the PE bag, and then the two clamps are opened, so that the two sets of vacuum suction cups will hold the PE bag The opening is opened to a certain range, and then the vacuum suction head 11 of the vacuum assembly is inserted into the PE bag, and then the two clamping parts are closed. At this time, the two hot-melt assemblies are also closed, and the vacuum suction The head 11 is vacuumed, and after the vacuuming is completed, the vacuum suction head 11 is pulled out from the PE bag, and the hot-melt assembly is heated for thermal plastic sealing.

There are still many implementations in the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.

Claims (10)

1. Equipment for packing, including the frame, its characterized in that: the rack is provided with:

the bag opening mechanism is used for opening the tiled PE bag and comprises a flat plate for laying the PE bag, and an upper adsorption component and a lower adsorption component which are positioned on the upper side and the lower side of the flat plate, wherein the flat plate is provided with a through hole for a lower adsorption disc of the lower adsorption component to pass through;

the bag turning mechanism is arranged beside the bag opening mechanism and comprises a horizontal shaft which is arranged on the frame in a self-rotating manner, a PE bag grabbing clamping jaw and a connecting shaft driving assembly are arranged on the side part of the horizontal shaft, and the shaft driving assembly drives the horizontal shaft to rotate so that the PE bag grabbing clamping jaw can grab the PE bag opened by the bag opening mechanism and the bag opening of the PE bag rotates to a state that the bag opening faces upwards from a state facing the side;

the first conveyor is arranged beside the bag turning mechanism, moves between a first height and a second height, and the conveying surface of the first conveyor is not higher than the bag turning mechanism at the first height; at a second height, the conveying surface of the PE bag is attached to or close to the bottom of the PE bag which is grabbed by the PE bag grabbing clamping jaws and the bag opening of which is upward;

and the bag opening processing mechanism is arranged above the first conveyor and is used for keeping the bag opening of the PE bag on the first conveyor in an open state.

2. The packaging apparatus of claim 1, wherein: and a PE bag supply mechanism is arranged beside the bag opening mechanism and used for placing the PE bags on the flat plate and positioned between the upper adsorption component and the lower adsorption component.

3. The packaging apparatus of claim 1, wherein: the shaft driving assembly drives the horizontal shaft through two cylinders to enable the PE bag grabbing clamping jaw to move among a first position, a second position, a third position and a fourth position, and at the first position, the PE bag grabbing clamping jaw is located below the horizontal shaft and keeps a vertical state; in the second position, the PE bag grabbing clamping jaw is kept in a horizontal state and extends to the upper part of the first conveyor; the position three is positioned between the position one and the position two and is close to the position one; the position four is above the position two.

4. The packaging apparatus of claim 1, wherein: the bag opening processing mechanism comprises a lifting driving assembly arranged on a rack, a support plate is connected below the lifting driving assembly and drives the support plate to lift, two support rods extending from the outer side of the first conveyor to the upper side of the first conveyor are arranged on the support plate in a gap mode, the extending direction of each support rod is parallel to the conveying direction of the first conveyor, a push-pull mechanism is arranged on the portion, located on the outer side of the support plate, of each support rod, the push-pull mechanism is connected with an expansion plate and drives the expansion plate to linearly translate in a reciprocating mode, the two expansion plates are arranged oppositely, the moving direction of the two expansion plates is perpendicular to the conveying direction of the first conveyor, and the two expansion plates are located right above the conveying surface of the first conveyor.

5. The packaging apparatus of claim 4, wherein: the folding mechanism comprises two pressing plates, the moving directions of the pressing plates and the expansion plate are perpendicular, the distance from the two pressing plates to the two sides of the first conveyor is the same, and the two pressing plates drive the folding driving assemblies to synchronously move.

6. The packaging apparatus of claim 1, wherein: still set up in the frame:

the conveying surface of the second conveyor is connected with the conveying surface of the first conveyor at a second height;

and the bag mouth plastic packaging mechanism is arranged above the second conveyor and is used for plastic packaging the bag mouth of the PE bag on the second conveyor.

7. The packaging apparatus of claim 6, wherein: sack plastic envelope mechanism is including setting up the accent height subassembly in the frame, the below of increaseing the subassembly is connected the frame and is driven the frame lift, be provided with first drive assembly on the frame at least, first drive assembly connects and drives two hot melt assembly and realize the plastic envelope of the sack of the PE bag on the second conveyer.

8. The packaging apparatus of claim 7, wherein: and the frame is also provided with a second driving assembly, and the second driving assembly is connected with and drives the two clamping pieces to close the bag opening of the PE bag on the second conveyor.

9. The packaging apparatus of claim 8, wherein: each clamping piece is provided with a group of vacuum chucks, and the two groups of vacuum chucks are arranged oppositely;

the bag mouth plastic packaging mechanism further comprises a vacuumizing assembly for vacuumizing the PE bags on the second conveyor.

10. The packaging method is characterized in that: at least comprises the following steps:

s1, providing a packaging device according to any one of claims 1 to 9;

s2, starting a bag opening mechanism to open the PE bag which is laid on the flat plate and is positioned between the upper adsorption component and the lower adsorption component;

s3, starting a bag turning mechanism to grab the opened PE bags and enabling the PE bags to rotate by 90 degrees to be in a state that bag openings face upwards when the first conveyor is at a first height;

s4, the first conveyor moves to a second height, and the bag overturning mechanism loosens the PE bags to enable the PE bags to be placed on the first conveyor;

and S5, starting a bag opening processing mechanism to enable the bag opening of the PE bag on the first conveyor to be kept in an open state so as to carry out charging.

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