A bag packaging method

Abstract

The present invention provides a bag feeding and packaging method, which includes the following station steps: S1 bag storage and bag separation station, S2 bag picking and delivery station, S3 zipper bag opening station, S4 bag opening station, S5 inspection station, S6 bag bottom support station, S7 filling station, S8 standby station, S9 sealing station. The present invention can detect the bags, and can also timely and separately remove the unopened bags, and give the bag feeding and packaging machine a variety of different functions and flexible choices, and can complete the bag conveying and filling work with high quality and high reliability.

Description

Technical Field

[0001] The invention relates to the field of filling and packaging, and in particular to a bag-feeding packaging method. Background Art

[0002] Various bags, boxes, sleeves, packages, etc. made of paper, aluminum foil, fiber, plastic film and their composites are all soft bag packaging. For filling machines with bags as packaging containers, multiple groups of bag clamping mechanisms that perform circular motion will be set as circulating bag feeding devices.

[0003] In the existing bag-feeding packaging method, the bag clamp is generally opened only at the bag-feeding station and the bag-out station by the mechanical control structure at the corresponding station, but the bag-clamp opening control structure cannot be set at the bag-opening, filling and sealing stations. In this way, bags that are not opened or filled during the conveying process cannot be rejected and can only flow out from the bag-out station according to the process and be manually picked out after the bag-out station, which increases the inspection workload and the risk of unpackaged bags being mixed into the finished products. Summary of the invention

[0004] The purpose of the present invention is to provide a new bag packaging method, which can at least partially solve the above technical problems. To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A bag packaging method, characterized by comprising the following workstation steps:

[0006] S1 bag storage and bag separation station: used for bag storage and bag separation;

[0007] S2 bag picking and delivering station: used to deliver the sorted bags to the circulating bag delivering device in sequence;

[0008] The circulating bag feeding device performs a circulating motion driven by the power mechanism to feed the bags along a circulating path;

[0009] A plurality of bag clamping mechanisms are distributed along the circulating movement direction on the circulating bag feeding device, and the bag clamping mechanisms can be independently opened and closed by compressed gas drive or an independent opening and closing drive mechanism, and can be independently adjusted by an independent spacing adjustment drive motor to independently adjust the spacing between the left and right bag clamping assemblies; the opening and closing drive mechanism can be a drive motor, an electromagnet, etc., and an independently controlled compressed gas switch is provided for compressed gas drive;

[0010] S3 zipper bag opening station: when the bag has a zipper, it is used to open the zipper of the bag. When the bag is not a zipper bag, this step is omitted;

[0011] S4 bag opening station: used for bag opening;

[0012] S5 detection station is used to detect whether the bag is opened successfully and determine whether the bag should proceed to the next step;

[0013] S6 bag bottom support station: on the basis of bag opening, the bag bottom is further supported to facilitate the action of the next station;

[0014] The positions S5 and S6 can be swapped or combined into one station;

[0015] S7 filling station: used to fill materials into bags;

[0016] S8 spare station;

[0017] S9 sealing station: seals the filled bags.

[0018] The omission of step S3 means that the working device corresponding to the zipper opening operation does not operate or the zipper bag opening station is cancelled.

[0019] Furthermore, the standby station is a secondary filling station for filling the bag with a second material; or a station for performing vacuuming or gas filling after filling.

[0020] Furthermore, two sealing stations are sequentially arranged along the circulation path, namely:

[0021] S9-1 one-time sealing station: used for the first sealing of filled bags;

[0022] S9-2 Secondary sealing station: used to perform a second sealing action on the bag that has completed the first sealing.

[0023] Further, the bag taking and delivering station, the zipper bag opening station, the bag opening station, the inspection station, the bag bottom supporting station, the filling station, the standby station, and the sealing station are arranged along the circumferential direction and are connected in series by the circulating bag feeding device. Alternatively, if the sealing station is divided into two stations, the bag taking and delivering station, the zipper bag opening station, the bag opening station, the inspection station, the bag bottom supporting station, the filling station, the standby station, the primary sealing station, and the secondary sealing station are arranged along the circumferential direction and are connected in series by the circulating bag feeding device.

[0024] Furthermore, the present invention is also provided with a discharging station for discharging the packaged bags. The discharging station can be located below the sealing station. When two sealing stations are provided, the discharging station is located below the secondary sealing station.

[0025] Furthermore, a labeling and coding station is also arranged above or below the zipper bag opening station (arranged before the bag is opened).

[0026] Furthermore, a rejection action is performed at the detection station or between the detection station and the bag discharging station or between the detection station and the filling station.

[0027] Furthermore, when the bag enters the circulating bag feeding device, the bag clamping mechanism in the circulating bag feeding device is driven by its opening and closing driving mechanism controlled by a separate program or by compressed gas driven by a compressed gas switch controlled by a separate program, so as to make way for the bag.

[0028] Furthermore, a sorting mechanism may be provided at the filling station to sort the bags during filling, for example, a bag shaking mechanism may be provided at the bottom to shake the bottom of the bag during filling so that the material is filled more evenly. The bag shaking mechanism may shake the structure.

[0029] Furthermore, a dust suction mechanism can be provided at the filling station. When filling powder materials, dust suction can be performed while filling to prevent the dust raised during filling from falling into the machine, thereby maintaining a clean packaging environment.

[0030] If the standby station is a secondary filling station, a sorting mechanism or a dust collection mechanism, etc. can also be set at the secondary filling station.

[0031] Furthermore, at the primary sealing station, vacuuming is performed before the sealing action, and sealing is performed once after the vacuuming is completed, so that the vacuuming effect can be guaranteed.

[0032] The bag feeding and packaging method of the present invention can detect bags, and unopened bags can be individually removed in time, and the bag feeding and packaging machine is given a variety of different functions and flexible choices, so that bag conveying and filling can be completed with high quality and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The figure is an overall schematic diagram of a bag-feeding packaging machine to which the method of the present invention is applied.

[0034] Figure 2 for Figure 1 A top view of a bag packaging machine is shown.

[0035] Figure 3 It is a flow chart of the packaging method of the present invention.

[0036] Figure 4 This is one of the schematic diagrams of the bag opening detection and bag bottom support mechanism.

[0037] Figure 5 This is the second schematic diagram of the bag opening detection and bag bottom support mechanism.

[0038] Figure 6 It is a schematic diagram of the bag opening detection and bag bottom supporting structure of the bag bottom supporting mechanism.

[0039] Figure 7It is a schematic diagram of the detection structure of the bag opening detection and bag bottom supporting mechanism.

[0040] Figure 8 This is an exploded view of the bag opening detection and bag bottom support mechanism.

[0041] Fig. 9 Schematic diagram of the adjustable bag clamp mechanism.

[0042] Fig.10 Schematic diagram of another embodiment of the adjustable bag clamp mechanism.

[0043] Fig.11 for Fig. 9 Exploded diagram of the structure.

[0044] Fig.12 for Fig.10 Exploded diagram of the structure.

[0045] Fig.13 Schematic diagram of an embodiment of an adjustable bag clamp mechanism adapted to two bags.

[0046] Fig.14 Exploded view of an embodiment of an adjustable bag clamp mechanism adapted to fit two bags.

[0047] Fig.15 A schematic diagram of another embodiment of the adjustable bag clamp mechanism.

[0048] Fig.16 This is an exploded view of bag clamp assembly embodiment 1.

[0049] Fig.17 This is one of the structural schematic diagrams of bag clamp assembly embodiment 1.

[0050] Fig.18 This is the second structural schematic diagram of bag clamp assembly embodiment 1.

[0051] Fig.19 It is a schematic structural diagram of bag clamp assembly embodiment 2.

[0052] Fig. 20 This is an exploded view of bag clamp assembly embodiment 2.

[0053] Fig.21 One of the schematic diagrams of an embodiment of a bag clamp assembly adapted for two bags.

[0054] Fig. 22 The second schematic diagram of an embodiment of a bag clamp assembly adapted for two bags.

[0055] Fig.23 The third schematic diagram of the embodiment of the bag clamp assembly adapted for two bags.

[0056] Fig.24One of the exploded views of an embodiment of a bag clamp assembly adapted for two bags.

[0057] Fig.25 The second exploded view of the embodiment of the bag clamp assembly adapted for two bags.

[0058] Fig.26 A schematic diagram of an embodiment of a bag clamp assembly adapted for one bag. DETAILED DESCRIPTION

[0059] Referring to the accompanying drawings, a bag-feeding packaging method is characterized by comprising the following workstation steps:

[0060] S1 bag storage and bag separation station: used for storing bag stacks B and bag separation; Figure 100 is a station device for storing bag stacks and bag separation, which can adopt an existing bag feeding and packaging machine bag storage and bag separation station with a working device having corresponding functions.

[0061] S2 bag picking and delivering station: used to deliver the sorted bags to the circulating bag feeding device in sequence; this station is the station where the circulating mechanism and the working mechanism of the bag storage and bag separation station complete the bag handover work. The reference numeral B1 shown in the figure is a bag that has been delivered to the bag clamping mechanism of the circulating bag feeding device, and the reference numeral 200 is a bag picking and bag delivery station device that takes bags from the bag storage and bag separation device and delivers the bags to the bag clamping mechanism of the circulating bag feeding device.

[0062] The circulating bag feeding device performs a circulating motion driven by the power mechanism to feed the bags along a circulating path;

[0063] Several bag clamping mechanisms are distributed along the circulation direction on the circulating bag feeding device. The number of bag clamping mechanisms matches the number of workstations that need to pause for workstation actions on the circulation path. The bag clamping mechanisms can be driven by compressed gas or an independent opening and closing drive motor or electromagnet to open and close independently, and driven by an independent spacing adjustment drive motor to independently adjust the spacing between the left and right bag clamping assemblies. The reference number C is a bag clamping mechanism.

[0064] In the process A0 of the bag entering the circulating bag feeding device, the bag clamping mechanism in the circulating bag feeding device can independently adjust the distance between its left and right bag clamping components through an adjustment drive motor controlled by a separate program, providing space for the bag and saving intermediate mechanisms and intermediate actions.

[0065] S3 zipper bag opening station: when the bag has a zipper, it is used to open the zipper of the bag opening. When the bag is not a zipper bag, this step is omitted. The zipper for the packaging bag refers to the strip buckle at the bag opening. In the present invention, the station device 300 of the zipper bag opening station can use a pair of displaceable suction cups or clamping claws perpendicular to the packaging bag to open the bag opening and the zipper with the suction cups or clamping claws. B2 represents a bag with an open zipper.

[0066] When the bag enters the circulating bag feeding device through the bag picking and feeding station S2, and is transported by the circulating bag feeding device to the zipper opening bag station S3 in process A1, before the zipper is opened, it can be driven by an independent spacing adjustment drive motor controlled by a separate program to shorten the spacing between the left and right bag clamp assemblies, so that the two sides of the bag opening can complete the set movement distance toward the center, and the bag opening can be arched and loosened, which can improve the success rate of the zipper opening work.

[0067] S4 bag opening station: used for opening the bag; in the present invention, the station device 400 of the bag opening station can use a pair of displaceable suction cups perpendicular to the packaging bag to pull the bag mouth open. B3 represents the bag that has been opened.

[0068] The bag can be transported from the S3 station to the S4 station A2 in the circulating bag feeding device, and can be driven by an independent spacing adjustment drive motor controlled by a separate program to shorten the spacing between the left and right bag clamp assemblies, so that both sides of the bag opening can move toward the center a set further distance, thereby improving the bag opening effect.

[0069] S5 and S6 are combined into station S56: In this embodiment, the inspection station and the bag bottom support station are combined into the same station, which is indicated by the reference numeral S56. The inspection work is to detect whether the bag is opened successfully and determine whether the bag will proceed to the next step (for example, whether to perform filling or subsequent rejection); the bag bottom support is to further support the bag bottom on the basis of bag opening to facilitate the action of the next station (for example, to provide qualified capacity for filling at the filling station). B4 represents a bag with a well-supported bag bottom and qualified inspection status.

[0070] The rejection action can be carried out at a certain station between the detection and the discharge station and during the transportation process between stations. The bag clamping assembly is opened by the opening and closing drive motor, electromagnet drive or compressed gas drive controlled by an independent switch of the bag clamping mechanism itself, so that the unqualified bags fall at the set position and are rejected.

[0071] S7 filling station: used to fill materials into bags; the filling device 700 of the filling station can adopt various existing required filling devices. B5 represents the bag that has completed the first filling.

[0072] S8 is a standby station; the standby station is a secondary filling station, which is used to fill the bag with a second material; the filling device 800 provided therein can adopt various existing required filling devices. B6 represents a bag that has completed the second filling.

[0073] The sealing station is divided into two stations, namely:

[0074] S9-1 one-time sealing station: used to perform the first sealing action on the filled bags. The station device 901 of the one-time sealing station can adopt various existing devices that can complete the corresponding functions; B7 represents the bag that has completed the first sealing. When the bag is transported from the standby station S8 to the one-time sealing station S9-1 through the circulating bag feeding device in the process A5, it can be driven by an independent spacing adjustment drive motor controlled by a separate program to open the spacing between the left and right bag clamp components so that the bag mouth is straightened.

[0075] S9-2 Secondary sealing station: used to perform a second sealing action on the bag that has completed the first sealing. The station device 902 of the secondary sealing station can adopt various existing devices that can complete the corresponding functions. B8 represents a bag that has completed the second sealing.

[0076] The bag taking and delivering station, the zipper bag opening station, the bag opening station, the bag bottom detection and supporting station, the filling station, the standby station, the primary sealing station and the secondary sealing station are arranged at equal intervals along the circumferential direction and are connected in series by a circulating bag delivering device.

[0077] If the sealing is only performed once, the secondary sealing station can also be retained to adapt to the sealing requirements of different bags; if the secondary sealing station is removed, the spacing between stations in the circumferential direction is readjusted to obtain a station layout with equal spacing. If the zipper opening work is not performed, the zipper opening station can also be retained to adapt to different bags; if the zipper opening station is removed, the spacing in the circumferential direction is readjusted to obtain a station layout with equal spacing. If the inspection station and the bag bottom support station need to be separated, the front and back order of the inspection station and the bag bottom support station can be adjusted as needed, and the spacing between stations in the circumferential direction is readjusted to obtain a station layout with equal spacing.

[0078] The discharging station S10 is used to output the packaged bags. Its station device 903 can adopt various active devices for taking and outputting, or non-powered devices, such as chutes. The discharging station S10 is located below the sealing station. If the sealing station is divided into two stations, the discharging station S10 is located below the secondary sealing station S9-2. The two stations are arranged in an overlapping manner. After the secondary sealing or all actions on the bag are completed, the bag is directly discharged, which is efficient and has good space utilization.

[0079] Above or below the zipper bag opening station S3, a labeling and coding station can also be set (set before the bag is opened). The labeling and coding device can adopt an existing device with corresponding functions.

[0080] For the secondary sealing station S9-2: if the second sealing action is not performed, it can also be used to cool the bag, pausing at one station for natural cooling, or a cooling structure can be set according to needs.

[0081] The following is an illustration of the detection mechanism and the bag bottom supporting mechanism with reference to the accompanying drawings. They can be combined together to form a combined detection station and bag bottom supporting station S56. If the detection station and bag bottom supporting station are separated, they can also be set in their respective stations.

[0082] Reference Figure 4-8 In this embodiment, the detection mechanism and the bag bottom supporting mechanism are combined together. The working mechanism includes a fixed bracket 8, a lifting bracket 81, a lifting power mechanism for driving the lifting bracket 81 to perform lifting movement, and a bag bottom supporting mechanism. The bag bottom supporting mechanism is provided with a bag bottom supporting member and a structure for supporting the bag wall, and the bag bottom supporting mechanism is provided on the lifting bracket 81.

[0083] The fixed bracket 8 is installed at the detection and bag bottom support station of the bag feeding packaging machine, and the lifting guide rod 801 and the lifting drive mechanism (the electric cylinder 802 in this embodiment can also be a cylinder or a motor) are fixed inside the fixed bracket 81. The lifting bracket 81 is fixedly connected to the extension rod 803 of the electric cylinder 802, and is provided with a hole or a guide sleeve 811 that matches the guide rod 801. Alternatively, a screw nut mechanism can also be used as a lifting transmission, and a motor-driven screw transmission method is adopted. A screw nut is set in the lifting bracket 81 and passes through the screw. The top of the screw is fixed on the fixed bracket 8, and the motor drives the screw so that the lifting bracket 81 performs lifting and lowering movements.

[0084] The descending height of the bag bottom supporting mechanism is uniformly determined by the lifting power mechanism according to the set descending stroke. During the whole batch of work, the bag bottom supporting member descends to the same height, so that the shapes of the packaging bags in the same batch are as consistent as possible during filling.

[0085] The bag supporting bottom piece includes left and right bag supporting bottom pieces 82, and the bag supporting bottom piece is provided with a swing arm portion 821, and the swing arm portion serves as a supporting portion. The structure for supporting the bag wall includes the swing arm portion 821, a supporting drive mechanism 83 and an elastic reset mechanism 84 of the bag supporting bottom piece. The supporting drive mechanism drives the left and right bag supporting bottom pieces 82 to open, and supports the bag wall through the swing arm portion. When the bag bottom is pushed, the bag bottom supporting effect can be improved, and the ultimate goal of normal filling can be perfectly achieved.

[0086] The left and right bag-supporting bottom parts 82 are rotatably mounted on the lifting bracket 81 through the shaft 825. The reference numeral 812 is the mounting hole of the shaft 825. The opening driving mechanism is mounted on the lifting bracket 81. The opening driving mechanism 83 is provided with a driving rod 831. The driving rod 831 is provided with a top block 832. The left and right bag-supporting bottom parts 82 are respectively provided with structures 822 cooperating with the top block 832. When the top block 832 descends, the top block 832 acts on the left and right bag-supporting bottom parts 82 so that the left and right bag-supporting bottom parts 82 are rotated and opened. The top block 832 can be provided with a symmetrical inclined surface for acting on the structure 822. The structure 822 can be a roller, a shaft, etc. When the lifting bracket descends to the position, that is, the bag-supporting bottom mechanism pushes into the designated position of the bag bottom, the bag-supporting bottom part opening driving mechanism 83 drives the top block to move downward, pushes the structure 822, rotates the bag-supporting bottom part, and opens the swing arm part of the bag-supporting bottom part, thereby completing the bag-supporting action.

[0087] The opening drive mechanism 83 can be a cylinder, a motor or an electric cylinder, etc., which is installed on the lifting bracket 81 with an adjustable installation height, so that the swing angle of the bag bottom piece can be adjusted by adjusting its height. The driving rod 831 passes through the lifting bracket 81 and is connected to the top block 832 at the bottom. The opening drive mechanism 83 can be provided with a connecting frame 833, which is connected to the lifting bracket 81. The mounting member 834 of the drive mechanism 83 is provided with a long hole perpendicular to the horizontal plane. The long hole cooperates with the mounting hole on the connecting frame 833, so that different mounting heights of the drive mechanism can be adjusted.

[0088] The lower ends 823 of the left and right bag bottom supporting members 82 are inclined and cooperate to form a cone, and the cone serves as the functional part of the top bag bottom. A cavity 824 is formed between the swing arm parts 821 of the left and right bag bottom supporting members, and the detection part installation and connection part of the bag opening detection mechanism is arranged in the cavity; the two ends of the elastic element 84 of the elastic reset mechanism are respectively connected to the left and right bag bottom supporting members 82, and through a very compact structure, it provides the functions of supporting the bag bottom, opening the bag wall and installing the detection part at the same time.

[0089] The present invention also provides a bag opening detection mechanism for detecting whether the bag opening is opened. The bag opening detection mechanism is provided on the lifting bracket 81 .

[0090] The bag opening detection mechanism includes a detection component mounting frame 851, a sensor (not shown), a sensor bracket 852 and an elastic detection component 853. The lower end of the elastic detection component 853 is mounted on the detection component mounting frame 851 (which can be made into one piece or connected with a fastener), the detection component mounting frame 851 is mounted on the lifting bracket 81, and the sensor bracket 852 is mounted on the lifting bracket 81. The mounting frame 851, as a part of the detection component installation connection part, is located in the cavity 824.

[0091] The elastic detection component 853 is provided with a detection portion 854 that cooperates with the bag opening. The upper part of the elastic detection component 853 cooperates with the sensor installed on the sensor bracket 852. The sensor can be a proximity switch. The elastic detection component 853 can be elastically deformed by pressure. If the bag opening is opened, the elastic detection component 853 can enter the bag together with the bag support bottom piece, and elastically deform by the compression of the bag wall, and disengage from the proximity switch to obtain a sensing signal of successful bag opening. If the bag opening is not opened or is not opened correctly, the bag support bottom piece 82 cannot enter the bag. Correspondingly, the elastic detection component 853 cannot enter the bag together with the bag support bottom piece 82. Then, the elastic detection component 853 will not be deformed by the resistance of the bag opening, so that it can detect whether the bag opening is opened correctly.

[0092] The elastic detection component 853 includes a left detection component and a right detection component. The lower part of the elastic detection component is located in the cavity 824 between the left and right bag bottom members in the bag bottom support mechanism. The upper part of the left and right detection components is cantilevered. In a free state, it passes through the through hole 826 on the left and right bag bottom members, and the part that passes through to the outside of the left and right bag bottom members is used as the detection part 854. The sensor and the sensor bracket are arranged on the outside of the top of the left and right bag bottom members, and a limit component 855 (for example, a bolt) at the upper end of the elastic detection component 853 can also be arranged thereon to protect the sensor. The left and right detection components can use spring pieces. The detection parts of the left and right detection components are in the shape of a hypotenuse that tilts upward and outward.

[0093] The detection of the bag opening detection mechanism can be performed before the lifting bracket 81 is lowered into place, or both can be performed at the same time. That is, the operation of the bag bottom support driving mechanism 83 and the operation of the bag opening detection mechanism can be performed at the same time or after the detection time of the bag opening detection mechanism.

[0094] A preferred embodiment of the bag clamping mechanism is described in detail below in conjunction with the accompanying drawings.

[0095] Reference Figure 9-20 The bag clamping mechanism provided by the present invention comprises a bag clamping assembly and a mounting seat. The bag clamping assembly is provided in two groups on the left and right, which are numbered 101 and 102 respectively. Correspondingly, the mounting seat comprises a left mounting seat 11 and a right mounting seat 12, which are respectively installed with the left bag clamping assembly 101 and the right bag clamping assembly 102. The structures of the two groups of bag clamping assemblies are the same, and one of the groups is taken as an example for detailed description below.

[0096] The bag clamp assembly is provided with a first bag clamping part 51 and a second bag clamping part 52, and the first bag clamping part 51 and the second bag clamping part 52 are combined into a bag clamp. The bag clamp assembly is also provided with a power mechanism and a protective mounting part 6, and the power mechanism is arranged in the protective mounting part 6, and the protective mounting part 6 is fixedly connected to the mounting seat (the left mounting seat 11 or the right mounting seat 12 according to the position), and the first bag clamping part 51 is connected to the power mechanism, and the first bag clamping part 51 is independently driven by the power mechanism to perform opening and closing actions as needed, thereby opening or closing the bag clamp.

[0097] The protective mounting member 6 is a tubular component, which can be a circular hollow tube, a square hollow tube or other shapes. The protective mounting member 6 extends in front of the mounting seat in an arm shape, and the rear end is installed in the mounting hole 10 of the mounting seat; the power mechanism adopts a cylinder 50 or an electric cylinder, and is connected to the first clamping bag member 51 through a movable connecting member. The cross-sectional dimensions of the power mechanism and the movable connecting member are smaller than the internal cross-sectional dimensions of the protective mounting member 6 and can rotate slightly within the protective mounting member. The slight rotation can adapt to the lateral change of the connection position between the first clamping bag member 51 and the movable connecting member when the first clamping bag member 51 is opened, thereby making the mechanism run more smoothly in a simpler way.

[0098] In this embodiment, the second bag clamping member 52 plays the role of a bag clamp mounting seat. The second bag clamping member 52 includes an open mounting hole 520, and a connecting portion 521 is arranged at the opening. The second bag clamping member 52 is sleeved on the end of the tubular protective mounting member 6 through the mounting hole 520 and the connecting portion 521 is fixed by a pin and a latch (a pin and a retaining ring, a bolt and a nut can also be used). The bag clamping part of the second bag clamping member 52 can be a clamping block 522 and a clamping block pad is arranged, a flexible clamping bag, and the first bag clamping member 51 is arranged on the outside of the second bag clamping member 52 and is hingedly connected to the second bag clamping member 52. Specifically, the mounting portion of the first bag clamping member 51 and the connecting portion of the second bag clamping member 52 can be hingedly connected by the above-mentioned pin. The bag clamping part of the first bag clamping member 51 also adopts a clamping block and a pad is arranged. The second bag clamping member can also be made into a form integrated with the protective mounting member 6.

[0099] The movable connecting member is rotatably connected to the first bag clamping member 51; and the power mechanism is movably connected to the connecting structure in the mounting hole 10 of the mounting seat. Fig.16 A power mechanism installation method is shown, in which a connecting ear plate 13 is arranged in the installation hole 10, and the tail of the power mechanism is connected to the connecting ear plate through a pin shaft. Fig. 20 Another installation method of the power mechanism is shown, in which the power mechanism is connected to a connecting sleeve, and the connecting sleeve is rotatably connected to the tail of the tubular protective mounting member 6 through a pin shaft.

[0100] The movable connecting member includes a first movable connecting member 53 and a second movable connecting member 54. The first movable connecting member 53 and the second movable connecting member 54 can both be connected by connecting rods. The rear end of the first movable connecting member 53 is fixedly connected to the extension rod 55 of the power mechanism, and the front end is rotatably connected to the rear end of the second movable connecting member 54. The front end of the second movable connecting member 54 extends out of the front end of the tubular protective mounting member 6 and is rotatably connected to the connecting hole 56 on the first bag clamping member 51 through a pin. The rotatable connection of the first movable connecting member 53 and the second movable connecting member 54 can also adopt a joint bearing or a universal joint structure. As mentioned above, the power mechanism 50 can rotate slightly. In this way, when the movable connecting member moves in the length direction of the bag clamping assembly under the push of the extension rod 55, a slight bend can occur at the connection between the first movable connecting member 53 and the second movable connecting member 54, and the bending angle is adapted to the opening angle between the first bag clamping member 51 and the second bag clamping member 52.

[0101] The bag clamping mechanism is also provided with a horizontal straight line adjustment mechanism and a horizontal straight line guide mechanism, and the horizontal straight line adjustment mechanism is provided with a power mechanism 20 of the adjustment mechanism; the left mounting seat 11 and the right mounting seat 12 are connected to the horizontal straight line adjustment structure, and can be driven by the power mechanism of the adjustment mechanism to independently adjust the distance between the left and right groups of bag clamp assemblies.

[0102] The mounting frame 4 of the bag clamping adjustment mechanism is fixed on the steering wheel of the bag feeding and packaging machine. The reference numeral 201 is the clamped bag. The reference numeral 5 is the control mechanism of the cylinder 50, which is installed behind the mounting frame 4.

[0103] The bag clamp adjustment mechanism includes a left mounting seat 11, a right mounting seat 12, a horizontal straight line adjustment mechanism and a horizontal straight line guide mechanism. The horizontal straight line adjustment mechanism is provided with a power mechanism, which can be a motor, a cylinder or an electric cylinder, etc. In this embodiment, it is a motor 20. The left mounting seat 11 and the right mounting seat 12 are respectively installed with a left bag clamp assembly 101 and a right bag clamp assembly 102; the left mounting seat 11 and the right mounting seat 12 are connected to the horizontal straight line adjustment structure, and can be driven by the power mechanism. According to the requirements, the spacing between the left bag clamp assembly and the right bag clamp assembly can be independently adjusted at any position on the packaging bag conveying path without adjusting the position and shape of the mechanical control mechanism.

[0104] like Fig. 9 , 11As shown, the horizontal straight line adjustment mechanism can be a structure in which a motor drives the screw rod to move, driving the nut sleeves at both ends to move away and closer, thereby adjusting the distance between the bag clamps, including a horizontally arranged screw rod, a left nut sleeve 21 and a right nut sleeve 22 with opposite rotation directions, the screw rod is a threaded rod 23 and 24 with opposite rotation directions and is respectively connected to the left nut sleeve 21 and the right nut sleeve 22, the left nut sleeve 21 and the right nut sleeve 22 are respectively arranged on the left mounting seat 11 and the right mounting seat 12, and the left mounting seat 11 and the right mounting seat 12 can move in opposite directions synchronously. Corresponding threaded holes can also be directly arranged on the left mounting seat 11 and the right mounting seat 12, and the screw rod is directly threadedly connected to the left mounting seat 11 and the right mounting seat 12.

[0105] like Fig.10 , 12 As shown, if a double-headed motor is used, the screw rod can also be composed of two horizontally arranged screw rods with opposite rotation directions, and the left nut sleeve and the right nut sleeve are respectively connected to the two screw rods 23b and 24b with opposite rotation directions. The double-headed motor is connected to the two screw rods by a coupling device, and the coupling device can be a coupling 28. Fig.10 , 12 Zhongyu Fig. 9 , 11 The same symbols represent the same meanings.

[0106] like Fig.15 As shown, the horizontal straight line adjustment mechanism can also be a structure in which a gear and a rack are matched, and the following structure can be adopted: a left horizontal rack 25 and a right horizontal rack 26 are arranged in the horizontal straight line adjustment structure, the gear 27 is connected to the motor, the gear 27 is engaged with the left horizontal rack 25 and the right horizontal rack 26 to drive the left horizontal rack 25 and the right horizontal rack 26 to move synchronously in the opposite direction, the left mounting seat 11 and the right mounting seat 12 are respectively provided with the left horizontal rack 25 and the right horizontal rack 26, and the left mounting seat 11 and the right mounting seat 12 move synchronously in the opposite direction.

[0107] The horizontal linear guide mechanism includes a left slider 31 and a guide rail 33 thereof, a right slider 32 and a guide rail 34 thereof, the left mounting seat 11 and the right mounting seat 12 are respectively connected to the left slider 31 and the right slider 32, and the guide rails 33 and 34 are fixed on the mounting frame 4. Accordingly, the power mechanism of the horizontal linear adjustment mechanism, the screw mounting frame of the adjustment mechanism and other structures can also be installed on the mounting frame 4.

[0108] The horizontal linear guide mechanism can also adopt a structure of sliding bearings and sliding rods, including a left sliding bearing and its guide rod, a right sliding bearing and its guide rod, the left mounting seat and the right mounting seat are respectively connected to the left sliding bearing and the right sliding bearing, and the guide rod is fixed on the mounting frame.

[0109] The bag clamp assembly installed on the left mounting seat 11 and the right mounting seat 12 is a single-station bag clamp (such as Fig. 9 , 10 , 11, 12), or a double station with front and back configuration (such as Fig.13 , 14 as shown) or more bag clamps at different stations. Fig.13 , 14 Zhongyu Fig. 9 , 10 , 11, and 12 have the same meanings.

[0110] The left bag clamp assembly 101 and the right bag clamp assembly 102 are respectively provided with separately controlled driving mechanisms to independently drive the bag clamps in the bag clamp assemblies. The driving mechanisms in the left bag clamp assembly 101 and the right bag clamp assembly 102 are respectively installed on the left mounting seat 11 and the right mounting seat 12, and move together with the left mounting seat 11 and the right mounting seat 12 respectively, and can drive the bag clamps therein to open and close when the left bag clamp assembly 101 and the right bag clamp assembly 102 are at any distance.

[0111] Reference Figure 21-26 , the following is another example of a bag clamping mechanism

[0112] The bag clamping mechanism provided by the present invention comprises a bag clamping assembly and a mounting seat, wherein the bag clamping assembly is provided in two groups on the left and right, respectively labeled 101 and 102, and correspondingly, the mounting seat comprises a left mounting seat 11 and a right mounting seat 12, which are respectively installed with the left bag clamping assembly 101 and the right bag clamping assembly 102. The two groups of bag clamping assemblies have the same structure, and one of the groups is taken as an example for detailed description below.

[0113] The bag clamp assembly is provided with a first bag clamping member 51 and a second bag clamping member 52, which are combined into a bag clamp. The first bag clamping member 51 and the second bag clamping member 52 both use clamping blocks and are provided with flexible clamping block pads and flexible clamping bags. The bag clamp assembly is also provided with a power mechanism 70 and a plurality of bag clamps. The power mechanism 70 drives the plurality of bag clamps to rotate synchronously with their respective rotating shafts as fulcrums, and the power mechanism 70 independently drives the bag clamps to open and close. The power mechanisms of the left bag clamp assembly 101 and the right bag clamp assembly 102 are respectively arranged on the backs of the mounting seats 11 and 12. The power mechanism 70 can use a pneumatic cylinder or an electric cylinder, and is controlled by the control mechanism 5.

[0114] The bag clamp assembly is further provided with a protective mounting member, and the protective mounting member is fixedly connected to a mounting seat (to a left mounting seat 11 or a right mounting seat 12 according to the position).

[0115] The power mechanism is provided with a rack transmission member 7, and the rack transmission member 7 is arranged in the protective mounting member, and the protective mounting member is fixedly connected to the mounting seat, the first bag clamping member 51 and the second bag clamping member 52 are installed on the protective mounting member, and the bag clamp formed by the first bag clamping member 51 and the second bag clamping member 52 is connected to the rack transmission member 7 through a gear.

[0116] The protective mounting member is extended in front of the mounting seat in an arm shape, and the outer shape can be a thin cylindrical or thin rectangular column or other shapes. The rear end of the protective mounting member is installed in the mounting hole 10 of the mounting seat. The rack transmission member 7 is arranged along the length direction of the protective mounting member, and the plurality of bag clips are arranged along the length direction of the protective mounting member.

[0117] The first bag clamping member 51 and the second bag clamping member 52 are respectively provided with gears 71 and 72. The gear 71 of the first bag clamping member is meshedly connected with the rack transmission member 7, and the gear 72 of the second bag clamping member is meshedly connected with the gear 71 of the first bag clamping member.

[0118] The rack transmission member 7 is provided with a plurality of rack sections (in this embodiment, the first section 7a and the second section 7b are connected), and each rack section corresponds to a bag clamp and meshes with the gear 71 of the corresponding bag clamp. When there are multiple bag clamps, the number of rack sections in the rack transmission member 7 and the number of bag clamps may also be unequal and less than the number of bag clamps, so that the gear (such as gear 72) of one bag clamp is meshed with the rack, and the gear (such as gear 71) of another bag clamp is connected to the gear (such as gear 72) meshed with the rack through a gear connection structure or other transmission mechanism and is driven to rotate.

[0119] The bag clamp assembly is provided with a structure to prevent the rack transmission member 7 from rotating, and the rotation refers to the rack transmission member 7 rotating in parallel with the axis of the rack. The structure to prevent the rack transmission member from rotating includes: a guide positioning member 73 is provided on the side of the rack transmission member 7 and is parallel to and connected with the rack transmission member 7, the protective mounting member is provided with a guide positioning hole that cooperates with the guide positioning member and is provided for the guide positioning member 73 to be inserted, the rack transmission member is also provided with a guide portion 74, and the protective mounting member is also provided with a guide hole for the rack transmission member to be inserted and guide the guide portion 74. The connecting member 75 of the rack transmission member 7 and the guide positioning member 73 is also flat, and a guide hole 15 of the connecting member 75 is also provided in the mounting hole 10 to guide the forward and backward movement and prevent rotation. Further, an anti-rotation fit can also be provided between the protective mounting member and the mounting seat, for example, a plane is provided at the portion where the protective mounting member is inserted into the mounting hole 10, or the cross-sectional outer contour of the portion where the protective mounting member is inserted into the mounting hole 10 is rectangular.

[0120] The protective mounting component is composed of an upper component 61 and a lower component 62, wherein the lower component 62 is used to mount the first bag clamping component 51 and the second bag clamping component 52, and the upper component 61 is provided with holes for the shafts 510 and 520 of the first bag clamping component and the second bag clamping component to pass through; the gears 71 and 72 are arranged in the inner cavity formed by the upper component and the lower component.

[0121] The bag clamping mechanism is also provided with a horizontal straight line adjustment mechanism and a horizontal straight line guide mechanism, and the horizontal straight line adjustment mechanism is provided with a power mechanism 20 of the adjustment mechanism; the left mounting seat 11 and the right mounting seat 12 are connected to the horizontal straight line adjustment structure, and can be driven by the power mechanism of the adjustment mechanism to independently adjust the distance between the left and right groups of bag clamp assemblies.

[0122] Fig.24 The horizontal linear adjustment mechanism shown can be a structure in which a motor drives the screw rod to move, driving the nut sleeves at both ends to move away and closer, thereby adjusting the distance between the bag clamps, including a horizontally arranged screw rod, a left nut sleeve and a right nut sleeve with opposite rotation directions, the screw rod is a left and right threaded rod 23 and 24 with opposite rotation directions and respectively connected to the left nut sleeve and the right nut sleeve, the left nut sleeve and the right nut sleeve are respectively arranged on the left mounting seat and the right mounting seat, and the left mounting seat and the right mounting seat can move in opposite directions synchronously. Figure 24-26 As shown, if a double-headed motor is used, the screw rod can also be composed of two horizontally arranged screw rods 23 and 24 with opposite rotation directions. The horizontal straight line adjustment mechanism can also be a structure in which a gear and a rack cooperate.

[0123] The horizontal linear guide mechanism includes a left slider 31 and its guide rail 33, a right slider 32 and its guide rail 34, the left mounting seat 11 and the right mounting seat 12 are respectively connected to the left slider 31 and the right slider 32, and the guide rails 33 and 34 are fixed on the mounting frame 4. Correspondingly, the power mechanism of the horizontal linear adjustment mechanism, the screw mounting frame of the adjustment mechanism and other structures can also be installed on the mounting frame 4. The horizontal linear guide mechanism can also adopt a structure of sliding bearings and sliding rods.

[0124] The power device 20 is fixed on the mounting frame 4. The power device 20 can also be fixed on the turntable 300, or both fixed to the mounting frame 4 and also fixed to the turntable 300.

[0125] The cylinder of the bag clamp assembly is connected to the controller (pneumatic control valve 5) through a connecting pipe 501. Each bag clamping mechanism (left bag clamping mechanism and right bag clamping mechanism) is provided with a corresponding control valve 5. The control valve 5 is installed behind the mounting frame 4 and rotates with the mounting frame. Each cylinder control valve 5 is connected to the adapter 400 (air path distribution channel) through a connecting pipe 504. The adapter 400 is fixedly installed on the upper end of the steering wheel main shaft 600, coaxial with the main shaft 600 and rotates with the main shaft 600. The steering wheel 300 is fixedly connected to the main shaft 600; the main shaft 600 is rotatably connected to the outer shaft 601 through a bearing 602, and the outer shaft 601 is fixedly connected to the frame 700. The main shaft 600 is a hollow shaft, and the ventilation pipeline connecting the adapter 400 to the outside is routed from the inside of the main shaft 600. The adapter 400 and the control valve 5 can be separately arranged as described above, or the adapter 400 can be an air path rotary distributor, on which a control valve 5 corresponding to the power of each group of bag clamping mechanisms is provided, and the program gives a signal to the control valve to control the opening and closing action of the bag clamping mechanism.

[0126] At the designated position where the bag clamp needs to be opened, a control member 510 is provided. The control member 510 is connected to the power (cylinder 511), and is driven by the cylinder 511 to control the timing of opening the control valve 5 (i.e., radially extending forward to cooperate with the control valve 5), and independently controls the control valves 5 of different bag clamping mechanisms. The mounting member (cylinder 511) of the control member 510 is fixedly installed. In this embodiment, it is fixed on the upper end surface of the outer shaft 601. The control member 510 cooperates with the cylinder control valve 5 just passing in front of it, controls the opening and closing of the cylinder control valve 5, and independently controls the opening and closing of the bag clamp. The motor lead of each group of bag clamp adjustment mechanism passes through the center hole of the main shaft, and the lead is connected to the conductive mechanism 601 set at the bottom end of the main shaft. The conductive mechanism 601 adopts a contact conductive method, such as a collector ring, a slip ring, etc.

[0127] If the power device of the bag clamp assembly adopts an electric cylinder, the control valve 5 can be other electric controllers. The control member 510 is a corresponding controller. Alternatively, the control member 510 and the power of the control member can be replaced by a rotary controller, and the rotary controller can adopt a rotary encoder, which is arranged on the main shaft 600. The rotary encoder is set to rotate to a specified angle through a program to match the position where the bag clamp needs to be controlled to open and close at the specified workstation. When it rotates to the specified angle, the rotary encoder sends information to the controller of the control valve 5, and the controller of the control valve 5 controls the bag clamp mechanism that reaches the position to open and close, which is convenient for control.

[0128] Unless otherwise specified, in the present invention, the orientation or position relationship indicated by terms such as "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or position relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0129] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "clamped" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A bag packaging method, characterized in that The following workstation steps are included: S1 bag storage and bag separation station: used for bag storage and bag separation; S2 bag picking and delivering station: used to deliver the sorted bags to the circulating bag delivering device in sequence; The circulating bag feeding device performs a circulating motion driven by the power mechanism to feed the bags along a circulating path; A plurality of bag clamping mechanisms are distributed on the circulating bag feeding device along the circulating movement direction, and the bag clamping mechanisms can be independently opened and closed by compressed gas or an independent opening and closing driving mechanism, and can be independently driven by an independent spacing adjustment driving motor to independently adjust the spacing between the left and right bag clamping assemblies; S3 zipper bag opening station: when the bag has a zipper, it is used to open the zipper of the bag. When the bag is not a zipper bag, this step is omitted; S4 bag opening station: used for bag opening; S5 detection station is used to detect whether the bag is opened successfully and determine whether the bag should proceed to the next step; S6 bag bottom support station: on the basis of bag opening, the bag bottom is further supported to facilitate the action of the next station; S5 and S6 are combined into one workstation; the working mechanism includes a fixed bracket, a lifting bracket, a lifting power mechanism for driving the lifting bracket to perform lifting movement, and a bag bottom supporting mechanism, wherein the bag bottom supporting mechanism is provided with a bag bottom supporting member and a structure for supporting the bag wall, and the bag bottom supporting mechanism is provided on the lifting bracket; The bag opening detection mechanism is arranged on the lifting bracket; the bag opening detection mechanism comprises a detection component mounting frame, a sensor, a sensor bracket and an elastic detection component, the lower end of the elastic detection component is mounted on the detection component mounting frame, the detection component mounting frame is mounted on the lifting bracket, and the sensor bracket is mounted on the lifting bracket; The elastic detection component is provided with a detection portion cooperating with the bag opening, and the upper portion of the elastic detection component is cooperating with the sensor mounted on the sensor bracket; the elastic detection component can be elastically deformed by pressure, and if the bag opening is opened, the elastic detection component can enter the bag together with the bag supporting bottom piece, and be elastically deformed by the squeezing of the bag wall, thereby obtaining a sensing signal indicating successful bag opening; if the bag opening is not opened or is not opened correctly, the bag supporting bottom piece cannot enter the bag, and accordingly, the elastic detection component cannot enter the bag together with the bag supporting bottom piece, and the elastic detection component will not be deformed by the resistance of the bag opening, thereby being able to detect whether the bag opening is opened correctly; The bag opening detection mechanism is detected before the lifting bracket is lowered into place, or both are performed at the same time; S7 filling station: used to fill materials into bags; S8 spare station; S9 sealing station: seals the filled bags.

2. A bag packaging method as claimed in claim 1, characterized in that The standby station is a secondary filling station, which is used to fill the bag with a second material; or to perform vacuuming or gas filling after filling.

3. A bag packaging method as claimed in claim 1, characterized in that There are two sealing stations along the circulation path, namely: S9-1 one-time sealing station: used for the first sealing of filled bags; S9-2 Secondary sealing station: used to perform a second sealing action on the bag that has completed the first sealing.

4. A bag packaging method as claimed in claim 1, characterized in that The omission of step S3 means that the working device corresponding to the zipper opening operation does not operate or the zipper bag opening station is cancelled.

5. A bag-packing method as claimed in claim 1, 2 or 4, characterized in that The bag taking and delivering station, zipper bag opening station, bag opening station, inspection station, bag bottom supporting station, filling station, standby station and sealing station are arranged along the circumferential direction and are connected in series by a circulating bag feeding device; among them, the inspection station and bag bottom supporting station are combined into the same station.

6. A bag packaging method as claimed in claim 3, characterized in that The bag taking and delivering station, zipper bag opening station, bag opening station, inspection station, bag bottom supporting station, filling station, standby station, primary sealing station and secondary sealing station are arranged along the circumferential direction and are connected in series by a circulating bag feeding device; among them, the inspection station and bag bottom supporting station are combined into the same station.

7. A bag packaging method as claimed in claim 1, characterized in that A discharging station is also provided for discharging the packed bags.

8. A bag packaging method as claimed in claim 7, characterized in that The discharging station is located below the sealing station.

9. A bag packaging method as claimed in claim 3, characterized in that A discharging station is also provided for discharging the packed bags, and the discharging station is located below the secondary sealing station.

10. A bag packaging method as claimed in claim 1, characterized in that A labeling and coding station is also set above or below the zipper bag opening station.

11. A bag packaging method as claimed in claim 1, characterized in that The rejecting action is performed at the detection station or between the detection station and the bag discharge station or between the detection station and the filling station.

12. A bag packaging method as claimed in claim 1, characterized in that When the bag enters the circulating bag feeding device, the bag clamping mechanism in the circulating bag feeding device is driven by its own program-controlled opening and closing driving mechanism or a separately program-controlled compressed gas switch to control compressed gas drive to open and close independently, and is driven by an independent spacing adjustment drive motor to independently adjust the spacing between its left and right bag clamping components to make way for the bag.

13. A bag-feeding packaging method as claimed in claim 1 or 2, characterized in that There is also a sorting mechanism at the filling station to sort the bags while filling, so that the materials are filled more evenly.

14. A bag-packing method as claimed in claim 1 or 2, characterized in that A dust suction mechanism is also set at the filling station. When filling powder materials, dust is sucked while filling to prevent the dust raised during filling from falling into the machine and maintain a clean packaging environment.

15. A bag packaging method as claimed in claim 3, characterized in that At the one-time sealing station, vacuuming is performed before sealing, and one-time sealing is performed after vacuuming to ensure the vacuuming effect.

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