A packaging machine

Abstract

The present invention relates to the field of packaging technology, and in particular to a packaging machine, including a bag store, a bag taking device, a first bag feeding device, a bag opening device, and a second bag feeding device. Based on the above packaging machine, the bag store, the bag taking device, the first bag feeding device, the bag opening device, and the second bag feeding device can form bag loading and bag opening processes, and during the bag opening process of the bag opening device, the first bag feeding device can be reset and cooperate with the bag taking device to carry out the bag loading operation of the next packaging bag, without waiting for the previous packaging bag to be opened and loaded with goods and output from the packaging machine before carrying out the bag loading of the next packaging bag, and the coordination between the various processes is more compact, which greatly reduces the waiting time in each process, thereby improving the efficiency of bag loading and bag opening.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, in particular to a packaging machine. Background Art

[0002] As people's living standards continue to improve, the demand for various products is getting higher and higher, because for manufacturers, improving product production efficiency is one of the core means to improve market competitiveness. In today's era of mechanized production, almost every production field will use mechanical equipment to replace manual labor for production, so to improve the production and packaging efficiency of products, it is necessary to improve the working efficiency of packaging equipment. Therefore, in the field of packaging machinery, the most talked about and most concerned issue is how many packages of products a packaging machine can pack per minute, which has also become an important indicator for measuring the working efficiency and performance of a packaging machine. Therefore, how to design a fast, efficient and stable packaging equipment is the goal that every packaging equipment manufacturer is committed to achieving.

[0003] In the packaging machine, there is a device that plays a vital role in the packaging efficiency of the packaging machine - the bag loading device; the automatic bag loading device generally includes: a bag storage mechanism, a bag taking mechanism, and a bag delivery mechanism; the traditional bag loading device workflow is that the bag taking mechanism takes the packaging bag from the bag storage and puts it on the workbench, and then the bag delivery mechanism delivers the bag mouth of the packaging bag to the designated station of the bag opening mechanism, and then the bag opening mechanism opens the packaging bag for product loading; in the traditional bag loading device, after the packaging bag is taken out of the bag storage, it is necessary to place the packaging bag on the bag delivery mechanism by rotating, and then the bag delivery mechanism delivers the packaging bag to a farther station. This process is cumbersome and complicated, which greatly increases the stability and accuracy of the packaging bag in the process of transporting it to the designated station, and the mechanism structure to realize these functions is complex and the cost is too high; in addition, during the bag loading process, the bag taking device and the bag delivery device cannot work continuously, and it is necessary to wait for the product to be loaded and the bag delivery device to send the product away before entering the bag taking and bag delivery operations of the next packaging bag, which greatly affects the efficiency of product packaging. Summary of the invention

[0004] The object of the present invention is to provide a packaging machine which can simplify the packaging bag loading process and improve product packaging efficiency.

[0005] In order to achieve the above object, the present invention provides a packaging machine, comprising:

[0006] Bag warehouse;

[0007] A bag taking device, which is arranged above the bag storage;

[0008] A first bag conveying device, comprising a first bag supporting assembly capable of moving toward a feeding end of the packaging machine;

[0009] a bag opening device, which is arranged at the feeding end of the packaging machine; and

[0010] A second bag conveying device, comprising a second bag supporting assembly capable of moving toward a material discharging end of the packaging machine and arranged outside the first bag supporting assembly;

[0011] Among them, the bag taking device can obtain the first end of the packaging bag placed on the bag warehouse and move it above the first bag feeding device, and the bag opening device can obtain the second end of the packaging bag located on the first bag feeding device and move it above the second bag feeding device.

[0012] In some embodiments of the present application, the bag picking device includes a bag picking lifting unit and a bag picking nozzle, and the bag picking nozzle is connected to the output end of the bag picking lifting unit to be used for sucking the first end of the packaging bag stored in the bag warehouse below and then rising.

[0013] In some embodiments of the present application, a frame is further included, which is rotatably connected to a first linear drive unit and a second linear drive unit extending from the feed end to the discharge end of the packaging machine. The bag taking and lifting unit is arranged on the first linear drive unit to move toward the discharge end or the feed end of the packaging machine, and the bag storage is arranged on the second linear drive unit to move toward the discharge end or the feed end of the packaging machine.

[0014] In some embodiments of the present application, the first linear drive unit includes a first adjusting screw, the second linear drive unit includes a second adjusting screw, the first adjusting screw is transmission-connected to the second adjusting screw, the bag picking and lifting unit is threadedly connected to the first adjusting screw, and the bag storage is threadedly connected to the second adjusting screw.

[0015] In some embodiments of the present application, the bag taking device also includes a nozzle mounting seat, which is connected to the output end of the bag taking lifting unit, and a plurality of bag taking nozzles are installed on the nozzle mounting seat, and the plurality of bag taking nozzles are arranged in sequence along a direction perpendicular to the movement of the first bag holding assembly.

[0016] In some embodiments of the present application, the first bag delivering device includes a first transmission assembly, the second bag delivering device includes a second transmission assembly, the first transmission assembly and the second transmission assembly both include a transmission chain and a transmission motor connected to the transmission chain, and the first bag holding assembly and the second bag holding assembly are respectively connected to the transmission chain of the first transmission assembly and the transmission chain of the second transmission assembly.

[0017] In some embodiments of the present application, the first bag holding assembly and the second bag holding assembly each include a plurality of supporting rods that are arranged in parallel and at intervals.

[0018] In some embodiments of the present application, the distance between two adjacent supporting rods in the first bag supporting assembly and / or the second bag supporting assembly is 10 mm-20 mm.

[0019] In some embodiments of the present application, the bag opening device includes an upper bag suction mechanism and a lower bag suction mechanism capable of moving relative to the upper bag suction mechanism, and the upper bag suction mechanism is correspondingly arranged above the lower bag suction mechanism.

[0020] In some embodiments of the present application, the bag opening device further includes a bag holding mechanism, and the bag holding mechanism includes a first bag holding component and a second bag holding component that are arranged opposite to each other and can move relatively.

[0021] In some embodiments of the present application, the bag opening device further includes a first guide rail and a second guide rail, the first guide rail being slidably connected to the second guide rail, wherein a guiding direction of the first guide rail is perpendicular to a guiding direction of the second guide rail;

[0022] The first bag-stretching assembly and the second bag-stretching assembly each include a stretching mouth assembly, a mounting seat, a bag-stretching drive unit and a bag-stretching drive arm. The bag-stretching drive unit is fixedly mounted on the mounting seat. The bag-stretching drive arm includes a fixed end and a free end. The fixed end is fixedly connected to the output end of the bag-stretching drive unit. The free end can move axially around the output axis of the bag-stretching drive unit. The stretching mouth assembly is rotatably connected to the free end, and the stretching mouth assembly is slidably connected to the first guide rail.

[0023] The implementation of the embodiments of the present invention has the following technical effects:

[0024] Based on the above-mentioned packaging machine, on the one hand, it is possible to form the bag loading and bag opening processes in the bag warehouse, the bag taking device, the first bag feeding device, the bag opening device and the second bag feeding device, and during the bag opening process of the bag opening device, the first bag feeding device can be reset and cooperate with the bag taking device to load the next packaging bag. There is no need to wait for the previous packaging bag to be opened, loaded into the goods and output from the packaging machine before loading the next packaging bag. The coordination between the various processes is more compact, which greatly reduces the waiting time in each process, thereby improving the efficiency of bag loading and opening. On the other hand, the flow process of the packaging bags between the bag taking device, the first bag feeding device, the bag opening device and the second bag feeding device is simple and smooth, which can effectively improve the stability and accuracy of the packaging bags during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention;

[0026] Figure 2 yes Figure 1 An enlarged schematic diagram of point A in the illustrated embodiment;

[0027] Figure 3 yes Figure 1 A schematic diagram of a partial structure of the embodiment shown;

[0028] Figure 4 yes Figure 3 An enlarged schematic diagram of point B in the illustrated embodiment;

[0029] Figure 5 yes Figure 3 An enlarged schematic diagram of point C in the illustrated embodiment;

[0030] Figure 6 yes Figure 1 A schematic structural diagram of a bag taking device according to the illustrated embodiment;

[0031] Figure 7 yes Figure 1 A schematic structural diagram of a bag opening device in the illustrated embodiment;

[0032] Figure 8 yes Figure 1 A schematic structural diagram of a bag-supporting mechanism of the illustrated embodiment;

[0033] Fig. 9 yes Figure 1 A schematic structural diagram of the second bag support assembly of the illustrated embodiment.

[0034] Description of reference numerals:

[0035] 100, bag storage, 110, first adjusting screw rod, 120, second adjusting screw rod, 130, first transmission rod, 140, second transmission rod, 150, transmission belt, 160, position display;

[0036] 200, bag taking device, 210, bag taking lifting unit, 220, bag taking nozzle, 230, nozzle mounting seat;

[0037] 300, a first bag conveying device, 310, a first bag supporting assembly, 311, a supporting rod, 320, a first transmission assembly, 330, a transmission chain, 340, a transmission motor, 350, a transmission shaft;

[0038] 400, bag opening device, 410, upper bag suction mechanism, 420, lower bag suction mechanism, 430, bag opening nozzle, 440, bag holding mechanism, 441, first bag holding assembly, 442, second bag holding assembly, 443, bag holding plate, 444, opening assembly, 445, mounting seat, 446, bag holding drive unit, 447, bag holding drive arm, 450, first guide rail, 460, second guide rail;

[0039] 500, second bag conveying device, 510, second bag holding assembly, 520, second transmission assembly;

[0040] 600, frame, 610, adjusting waist round hole;

[0041] 700. Width adjustment mechanism. DETAILED DESCRIPTION

[0042] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In addition, the present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0045] In this embodiment, the first end of the packaging bag is the sealing end of the packaging bag, and the second end is the opening end of the packaging bag (i.e., the feeding end); in addition, the feeding end of the packaging machine is the end where the product enters the packaging machine, and the discharging end of the packaging machine is the end where the product is sent out of the packaging machine.

[0046] refer to Figure 1 - Figure 7 One embodiment of the present invention provides a packaging machine, including a bag warehouse 100, a bag taking device 200, a first bag feeding device 300, a bag opening device 400 and a second bag feeding device 500.

[0047] The bag taking device 200 is arranged above the bag storage 100, so as to obtain the first end of the packaging bag placed on the bag storage 100 and move it to the top of the first bag feeding device 300; the first bag feeding device 300 includes a first bag holding component 310, and the first bag holding component 310 can move toward the feeding end of the packaging machine;

[0048] The bag opening device 400 is arranged at the feed end of the packaging machine, and can obtain the second end of the packaging bag placed on the first bag supporting assembly 310 of the first bag feeding device 300 to move the second end of the packaging bag to the top of the second bag feeding device 500; the second bag feeding device 500 includes a second bag supporting assembly 510, and the second bag supporting assembly 510 can be moved and reset toward the feed end of the packaging machine.

[0049] Based on the above-mentioned packaging machine, on the one hand, the bag loading and bag opening processes can be formed in the bag warehouse 100, the bag taking device 200, the first bag feeding device 300, the bag opening device 400 and the second bag feeding device 500, and during the bag opening process of the bag opening device 400, the first bag feeding device 300 can be reset to cooperate with the bag taking device 200 to load the next packaging bag, without waiting for the previous packaging bag to be opened, loaded with goods and output from the packaging machine before loading the next packaging bag. The coordination between the various processes is more compact, which greatly reduces the waiting time in each process, thereby improving the efficiency of bag loading and opening; on the other hand, the flow process of the packaging bags among the bag taking device 200, the first bag feeding device 300, the bag opening device 400 and the second bag feeding device 500 is simple and smooth, which can effectively improve the stability and accuracy of the packaging bags during transportation.

[0050] Specifically, when the bag taking device 200 obtains the first end of the packaging bag and moves to the top of the first bag feeding device 300, the first bag supporting component 310 of the first bag feeding device 300 moves toward the feeding end of the packaging machine, and at the same time pushes the second end of the packaging bag to move toward the feeding end of the packaging machine and flattens the packaging bag. Then, the bag taking device 200 releases the first end of the packaging bag. When the first bag supporting component 310 moves the packaging bag to the bag taking position of the bag opening device 400, the bag opening device 400 obtains the second end of the packaging bag placed on the first bag supporting component 310 and moves to the top of the second bag feeding device 500. The second bag supporting component 510 of the second bag feeding device 500 moves toward the discharging end of the packaging machine. The second bag supporting component 510 pushes the first end of the packaging bag toward the discharging end of the packaging machine. The second bag supporting assembly 510 holds the loaded bag and moves the loaded bag toward the discharging end of the packaging machine to remove the packaging machine. At this time, the second bag supporting assembly 510 can hold the loaded bag and support it, and support the product to the next workstation. It should be noted that after the second end of the packaging bag is obtained by the bag opening device 400, the first bag supporting assembly 310 can be reset to carry out the bagging process of the next packaging bag, thereby saving the waiting time when the previous packaging bag is opened and loaded, the next packaging bag is loaded and the equipment is reset, and the process of taking bags, loading bags, opening bags and unloading materials is completed in a continuous manner, thereby improving the working efficiency of the packaging machine.

[0051] For further reference, Figure 16, the bag picking device 200 in this embodiment includes a bag picking lifting unit 210 and a bag picking nozzle 220, and the bag picking nozzle 220 is fixed to the output end of the bag picking lifting unit 210. In this way, when the packaging bag is placed on the bag warehouse 100, the bag picking lifting unit 210 can drive the bag picking nozzle 220 to move downward to suck the first end of the packaging bag, and then lift the first end of the packaging bag to above the first bag feeding device 300, so that the first bag supporting assembly 310 can lift the second end of the packaging bag when moving toward the feeding end of the packaging machine; in this embodiment, the bag picking lifting unit 210 is a lifting cylinder, and in other embodiments, the bag picking lifting unit 210 can be a lifting screw rod or a lifting linear sliding module.

[0052] For further reference, Figure 1 , Figure 3 - Figure 5 In order to make the bag warehouse 100 and the bag taking device 200 adapt to the use of packaging bags of different lengths, the distance between the first end of the packaging bag placed on the bag warehouse 100 and the feed end of the packaging machine, as well as the distance between the bag taking device 200 and the feed end of the packaging machine are adjusted. The packaging machine of this embodiment also includes a frame 600, and the frame 600 is rotatably connected to a first linear drive unit and a second linear drive unit extending from the feed end to the discharge end of the packaging machine. The bag taking lifting unit 210 is arranged on the first linear drive unit to move toward the discharge end or the feed end of the packaging machine, and the bag warehouse 100 is arranged on the second linear drive unit to move toward the discharge end or the feed end of the packaging machine, so that after the bag taking device 200 obtains the packaging bag placed on the bag warehouse 100, when the first bag supporting assembly 310 supports the second end of the packaging bag, the packaging bag can be spread flat on the first bag supporting assembly 310, thereby facilitating the bag opening device 400 to take the bag and move it.

[0053] Specifically, refer to Figure 4 and Figure 5In this embodiment, the first linear drive unit includes a first adjusting screw rod 110, and the second linear drive unit includes a second adjusting screw rod 120. The first adjusting screw rod 110 is connected to the second adjusting screw rod 120 in a transmission manner. The bag taking and lifting unit 210 is threadedly connected to the first adjusting screw rod 110, and the bag warehouse 100 is threadedly connected to the second adjusting screw rod 120, so that the bag warehouse 100 and the bag taking device 200 can move synchronously, so that the first end of the packaging bag placed on the bag warehouse 100 is always aligned with the bag taking device 200, and there is no need to repeatedly calibrate the positional relationship between the bag warehouse 100 and the bag taking device 200 when using different packaging bags; In addition, the first adjusting screw rod 110 is transmission-connected to the first transmission rod 130, and the second adjusting screw rod 120 is transmission-connected to the second transmission rod 140. The first transmission rod 130 and the second transmission rod 140 are transmission-connected via a transmission belt 150, so that when the first transmission rod 130 or the second transmission rod 140 is adjusted by a motor or manually, the bag warehouse 100 and the bag taking device 200 can be adjusted synchronously, wherein the first adjusting screw rod 110 is connected to a position display 160, and the position of the bag taking lifting unit 210 can be determined by reading the parameters of the position display 160, so as to facilitate adjustment and selection according to packaging bags of different specifications.

[0054] In addition, refer to Figure 3 In this embodiment, the first linear drive unit and the second linear drive unit also include a linear guide rail arranged on the frame 600, and the bag picking and lifting unit 210 and the bag storage 100 are respectively slidably connected to the linear guide rail through sliders, thereby improving the sliding stability of the bag storage 100 and the bag picking and lifting unit 210 between the feeding end and the discharging end of the packaging machine and the reliability of bag picking.

[0055] It should be noted that, in other embodiments, the first linear drive unit and the second linear drive unit may be a linear drive cylinder or a linear sliding module, etc.

[0056] For further reference, Figure 6 The bag taking device 200 in this embodiment also includes a suction nozzle mounting seat 230, which is connected to the output end of the bag taking lifting unit 210, and a plurality of bag taking suction nozzles 220 are installed on the suction nozzle mounting seat 230. The plurality of bag taking suction nozzles 220 are arranged in sequence along a direction perpendicular to the movement of the first bag holding assembly 310. By arranging a plurality of bag taking suction nozzles 220, it is possible to adapt to packaging bags of different widths. When the bag taking lifting unit 210 drives the suction nozzle mounting seat 230 to descend, the corresponding bag taking suction nozzle 220 can be selected according to the packaging bags of different widths to draw a vacuum to adsorb the first end of the packaging bag and lift it up.

[0057] refer to Figure 1 - Figure 3In this embodiment, the first bag feeding device 300 includes a first transmission assembly 320, and the second bag feeding device 500 includes a second transmission assembly 520. The first transmission assembly 320 and the second transmission assembly 520 both include a transmission chain 330 and a transmission motor 340 connected to the transmission chain 330. The first bag holding assembly 310 and the second bag holding assembly 510 are respectively connected to the transmission chain 330 of the first transmission assembly 320 and the transmission chain 330 of the second transmission assembly 520. When the first bag holding assembly 310 and the second bag holding assembly 510 move in the horizontal direction, the packaging bag is moved between the first bag holding assembly 310 and the first bag holding assembly 310. The first bag supporting assembly 310 and the second bag supporting assembly 510 are placed horizontally and stably on the frame 600; in addition, the left and right ends of the first bag supporting assembly 310 and the second bag supporting assembly 510 are connected with a transmission chain 330 to improve the stability of the movement of the first bag supporting assembly 310 and the second bag supporting assembly 510; specifically, the transmission chain 330 is engaged with a plurality of transmission gears, and the plurality of transmission gears are respectively penetrated by a plurality of transmission shafts 350, and the transmission shaft 350 is fixedly connected to the frame 600. An adjusting waist circular hole 610 is opened on the frame 600, and the transmission shaft 350 can be moved along the length direction of the adjusting waist circular hole 610 to tighten the transmission chain 330 and ensure the transmission stability of the transmission chain 330.

[0058] refer to Figure 1 and Figure 3 Specifically, the first bag supporting assembly 310 and the second bag supporting assembly 510 in the present embodiment both include a plurality of supporting rods 311 that are arranged in parallel and at intervals. On the one hand, this prevents the packaging bags spread on the first bag supporting assembly 310 or the second bag supporting assembly 510 from being adsorbed on the first bag supporting assembly 310 or the second bag supporting assembly 510 due to vacuum adsorption, thereby ensuring that the bag opening device 400 can stably absorb and lift the packaging bags; on the other hand, during the circulation of the transmission chain 330, the first bag supporting assembly 310 and the second bag supporting assembly 510 can adapt to the synchronous movement at the turning point of the transmission chain 330.

[0059] Furthermore, in the present embodiment, the distance between two adjacent support rods 311 in the first bag supporting assembly 310 and / or the second bag supporting assembly 510 is 10-20 mm, which can prevent the packaging bag from falling from the gap between the two support rods 311 under the action of its own gravity while stably supporting the packaging bag; in different embodiments, the distance between two adjacent support rods 311 can be 10 mm, 13 mm, 15 mm, 17 mm or 20 mm.

[0060] refer to Figure 1 and Figure 7The bag opening device 400 in this embodiment includes an upper bag suction mechanism 410 and a lower bag suction mechanism 420 that can move relative to the upper bag suction mechanism 410. The upper bag suction mechanism 410 is correspondingly arranged above the lower bag suction mechanism 420. When the first bag supporting assembly 310 moves the packaging bag to the position of the bag opening device 400, the lower bag suction mechanism 420 sucks the lower side surface of the second end of the packaging bag, and then lifts the packaging bag to the top of the second bag supporting assembly 510. At the same time, the upper bag suction mechanism 410 moves downward to suck the upper side surface of the second end of the packaging bag, and then the upper bag suction mechanism 410 moves upward relative to the lower bag suction mechanism 420 to pull open the packaging bag, thereby opening the bag mouth of the packaging bag; further, the upper bag suction mechanism 410 and the lower bag suction mechanism 420 move relative to the lower bag suction mechanism 420 to pull open the packaging bag. Each bag mechanism 420 is provided with two bag opening suction nozzles 430. The two bag opening suction nozzles 430 of the upper bag suction mechanism 410 respectively suck the two corner positions on the upper side of the second end of the packaging bag, and the two bag opening suction nozzles 430 of the lower bag suction mechanism 420 respectively suck the two corner positions on the lower side of the second end of the packaging bag, thereby opening the packaging bag; in addition, the two bag opening suction nozzles 430 of the upper bag suction mechanism 410 and the two bag opening suction nozzles 430 of the upper bag suction mechanism 410 are connected through a width adjustment mechanism 700. Through the width adjustment mechanism 700, the width between the two bag opening suction nozzles 430 of the upper bag suction mechanism 410 and the two bag opening suction nozzles 430 of the upper bag suction mechanism 410 can be adjusted to adapt to packaging bags of different widths.

[0061] In addition, the bag opening device 400 of this embodiment also includes a bag-stretching mechanism 440. After the upper bag suction mechanism 410 and the lower bag suction mechanism 420 open the bag opening of the packaging bag, the bag-stretching mechanism 440 extends into the packaging bag to stretch the bag opening so that the goods can be better pushed into the packaging bag and the packaging bag can be prevented from falling out.

[0062] Specifically, refer to Figure 7 - Fig. 9 The bag-supporting mechanism 440 in this embodiment includes a first bag-supporting assembly 441 and a second bag-supporting assembly 442 which are arranged opposite to each other. The first bag-supporting assembly 441 and the second bag-supporting assembly 442 both include a mouth-supporting assembly 444, a mounting seat 445, a bag-supporting driving unit 446 and a bag-supporting driving arm 447. The bag-supporting driving unit 446 is fixedly mounted on the mounting seat 445. The bag-supporting driving arm 447 includes a fixed end and a free end. The fixed end is fixedly connected to the output end of the bag-supporting driving unit 446. The free end can move circumferentially around the output axis of the bag-supporting driving unit 446. The mouth-supporting assembly 444 is rotatably connected to the free end.

[0063] A first guide rail 450, the opening assembly 444 is slidably connected to the first guide rail 450;

[0064] A second guide rail 460, the first guide rail 450 is slidably connected to the second guide rail 460;

[0065] The guiding direction of the first guide rail 450 is perpendicular to the guiding direction of the second guide rail 460 .

[0066] In this way, the first bag-stretching component 441 and the second bag-stretching component 442 only need to be provided with one bag-stretching driving unit 446, and the free end of the bag-stretching driving arm 447 is driven to rotate by the bag-stretching driving unit 446 to realize the circular motion of the opening component 444 around the output shaft of the bag-stretching driving unit 446. As a result, the opening components 444 of the first bag-stretching component 441 and the second bag-stretching component 442 can move from the front end of the bag opening of the packaging bag toward the bag opening of the packaging bag, first approach each other to enter the packaging bag, and then move away from each other to open the bag opening of the packaging bag. The trajectory of the opening component 444 during the bag-stretching process is arc-shaped, which is shorter than the prior art which needs to approach each other first, then move toward the bag opening of the packaging bag, and then move away from each other to stretch the bag opening. The efficiency of the bag-stretching mechanism 440 can be effectively improved, and since the entire bag-stretching process moves in an arc shape, there is no need to stop and turn, which further reduces the bag-stretching time.

[0067] The first bag-stretching assembly 441 and the second bag-stretching assembly 442 of the opening assembly 444 both include a bag-stretching plate 443. When the upper bag-sucking mechanism 410 and the lower bag-sucking mechanism 420 open the bag opening of the packaging bag, the bag-stretching plates 443 of the first bag-stretching assembly 441 and the second bag-stretching assembly 442 extend into the packaging bag from the bag opening of the packaging bag and move to the left and right sides of the packaging bag to stretch and tighten the bag opening, and the packaging bag is tightened by the tensioning force applied by the bag-stretching plates 443. In addition, the bag opening device 400 also includes two sets of mounting plates, one of the upper bag-sucking mechanism 410 and the other of the lower bag-sucking mechanism 420. The bag opening nozzle 430 corresponds to the first bag holding component 441 and is installed on a mounting plate, and the other bag opening nozzle 430 of the upper bag suction mechanism 410 corresponds to the second bag holding component 442 and is installed on another mounting plate. Both sets of mounting plates are installed on the width adjustment mechanism 700, and the relative distance between the two sets of mounting plates is adjusted by the width adjustment mechanism 700, thereby synchronously adjusting the distance between the two bag opening nozzles 430 of the upper bag suction mechanism 410, the first bag holding component 441 and the second bag holding component 442 to adapt to the production of packaging bags of different widths.

[0068] The working principle of the present invention is:

[0069] S1. The bag taking and lifting unit 210 drives the bag taking and sucking nozzle 220 to descend and suck the upper side of the first end of the packaging bag placed on the bag storage 100. The bag taking and lifting cylinder drives the bag taking and sucking nozzle 220 to rise to the top of the first bag holding assembly 310. The first bag holding assembly 310 moves toward the feeding end of the packaging machine driven by the transmission chain 330. At this time, the first bag holding assembly 310 lifts the second end of the packaging bag and the entire packaging bag. The bag taking and sucking nozzle 220 is detached from the packaging bag. The first bag holding assembly 310 supports the packaging bag and moves the second end of the packaging bag to the sucking position of the upper bag sucking mechanism 410 and the lower bag sucking mechanism 420.

[0070] S2, the lower bag suction mechanism 420 sucks the lower side of the second end of the packaging bag, and then lifts the packaging bag to the working position above the second bag supporting assembly 510, at the same time, the upper bag suction mechanism 410 moves downward, the bag opening suction nozzle 430 of the upper bag suction mechanism 410 sucks the upper side of the second end of the packaging bag, and then the bag opening suction nozzle 430 of the upper bag suction mechanism 410 moves upward to open the bag mouth of the packaging bag, at this time, the first bag supporting assembly 310 is cyclically reset to the starting position along the transmission chain 330 to prepare for supporting the next packaging bag; and the second bag supporting assembly 510 is driven by the transmission chain 330 to move toward the discharge end of the packaging machine to lift the first end of the packaging bag and the entire packaging bag;

[0071] S3, the bag support plate 443 of the first bag support assembly 441 and the bag support plate 443 of the second bag support assembly 442 extend into the packaging bag from the bag opening of the packaging bag, and then move to the left and right sides of the packaging bag to tighten the bag opening. After the goods are pushed into the packaging bag, the bag support plate 443 of the first bag support assembly 441 and the bag support plate 443 of the second bag support assembly 442 are reset, and the second bag supporting assembly 510 drives the rear packaging bag loaded with goods to move toward the discharge end of the packaging machine to be unloaded to the next production process;

[0072] During the process of supporting the packaging bag and pushing the goods into it, the bag taking device 200 and the first bag feeding device 300 can perform the bag feeding operation of the next packaging bag, that is, the above-mentioned step S1 and step S3 are performed simultaneously, and the bag supporting and loading step of the previous packaging bag and the bag feeding step of the next packaging bag are performed respectively, which greatly improves the efficiency of product packaging production.

[0073] In summary, the present invention provides a first bag feeding device 300 and a second bag feeding device 500, and reasonably configures the first bag feeding device 300 and the second bag feeding device 500 as well as the bag taking device 200 and the bag opening device 400 that cooperate with the first bag feeding device 300 and the second bag feeding device 500, so that while the bag feeding, bag opening, bag supporting, goods pushing and material unloading processes are completed continuously, the process of the previous bag partially overlaps with the process of the next bag, thereby saving the time for the packaging production of multiple products, greatly increasing the number of packaged goods that can be completed per unit time, and further improving the efficiency of product packaging; and can simplify the bagging process, and improve the stability and accuracy of bagging.

[0074] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A packaging machine, characterized in that: include: Bag warehouse; A bag taking device, which is arranged above the bag storage; A first bag conveying device, comprising a first bag supporting assembly; A bag opening device, which is arranged at the feeding end of the packaging machine; as well as A second bag conveying device, comprising a second bag supporting assembly arranged outside the first bag supporting assembly; Wherein, when the bag taking device obtains the first end of the packaging bag placed on the bag storage and moves to the top of the first bag feeding device, the first bag supporting component can move toward the feeding end of the packaging machine and flatten the packaging bag, and the bag opening device obtains the second end of the packaging bag located on the first bag supporting component and moves to the top of the second bag feeding device, and the second bag supporting component can move toward the discharging end of the packaging machine and flatten the packaging bag; The bag taking device comprises a bag taking lifting unit and a bag taking suction nozzle, wherein the bag taking suction nozzle is connected to the output end of the bag taking lifting unit to suck the first end of the packaging bag stored in the bag storage below and then lift up; The first bag conveying device includes a first transmission assembly, the second bag conveying device includes a second transmission assembly, the first transmission assembly and the second transmission assembly each include a transmission chain and a transmission motor connected to the transmission chain, and the first bag holding assembly and the second bag holding assembly are connected to the transmission chain of the first transmission assembly and the transmission chain of the second transmission assembly, respectively; The bag opening device further comprises a bag holding mechanism, wherein the bag holding mechanism comprises a first bag holding component and a second bag holding component which are arranged opposite to each other and can move relatively.

2. The packaging machine according to claim 1, characterized in that: It also includes a frame, which is rotatably connected to a first linear drive unit and a second linear drive unit extending from the feed end to the discharge end of the packaging machine. The bag taking and lifting unit is arranged on the first linear drive unit to move toward the discharge end or the feed end of the packaging machine, and the bag storage is arranged on the second linear drive unit to move toward the discharge end or the feed end of the packaging machine.

3. The packaging machine according to claim 2, characterized in that: The first linear drive unit includes a first adjusting screw, the second linear drive unit includes a second adjusting screw, the first adjusting screw is transmission-connected to the second adjusting screw, the bag taking and lifting unit is threadedly connected to the first adjusting screw, and the bag storage is threadedly connected to the second adjusting screw.

4. The packaging machine according to claim 1, characterized in that: The bag taking device also includes a nozzle mounting seat, which is connected to the output end of the bag taking lifting unit, and a plurality of bag taking nozzles are installed on the nozzle mounting seat. The plurality of bag taking nozzles are arranged in sequence along a direction perpendicular to the movement of the first bag holding assembly.

5. The packaging machine according to any one of claims 1 to 4, characterized in that: The first bag supporting assembly and the second bag supporting assembly each include a plurality of supporting rods that are arranged in parallel and at intervals.

6. The packaging machine according to claim 5, characterized in that: The distance between two adjacent supporting rods in the first bag supporting assembly and / or the second bag supporting assembly is 10 mm-20 mm.

7. The packaging machine according to claim 1, characterized in that: The bag opening device comprises an upper bag suction mechanism and a lower bag suction mechanism capable of moving relative to the upper bag suction mechanism, and the upper bag suction mechanism is correspondingly arranged above the lower bag suction mechanism.

8. The packaging machine according to claim 1, characterized in that: The bag opening device further comprises a first guide rail and a second guide rail, wherein the first guide rail is slidably connected to the second guide rail, wherein the guiding direction of the first guide rail is perpendicular to the guiding direction of the second guide rail; The first bag-stretching assembly and the second bag-stretching assembly each include a stretching mouth assembly, a mounting seat, a bag-stretching drive unit and a bag-stretching drive arm. The bag-stretching drive unit is fixedly mounted on the mounting seat. The bag-stretching drive arm includes a fixed end and a free end. The fixed end is fixedly connected to the output end of the bag-stretching drive unit. The free end can move axially around the output axis of the bag-stretching drive unit. The stretching mouth assembly is rotatably connected to the free end, and the stretching mouth assembly is slidably connected to the first guide rail.

Images