Packaging bag feeding device

Abstract

The utility model relates to a packaging bag feeding device which is characterized in that a bag storage frame and a bag moving mechanism are arranged on the feeding side of a bag feeding rack, a bag opening mechanism and a bag feeding mechanism are arranged on the discharging side of the bag feeding rack, and packaging bags on the uppermost layer of the bag storage frame are transferred to a bag opening station inside the bag feeding rack through the bag moving mechanism; the lower side of a packaging bag opening on the bag opening station is adsorbed and fixed through a lower bag opening suction cup in the bag opening mechanism, the upper side of the packaging bag opening on the bag opening station is adsorbed and movably opened through an upper bag opening suction cup in the bag opening mechanism, and a bag clamping element is arranged at the free end of a bag feeding swing arm in the bag feeding mechanism. The upper side and the lower side of a bag opening of a packaging bag are fixed through the corresponding bag clamping elements, and then the bag opening of the packaging bag swings upwards through the bag feeding swing arm to be buckled to the feeding opening. The opening structure and the action control of the bag opening of the packaging bag are very simple, the bag opening of the packaging bag is buckled on a feeding port of the next process by directly utilizing the swinging of the bag feeding swing arm, and the bag feeding and conveying time is saved.

Description

Technical Field

[0001] The utility model relates to the field of packaging machinery, and specifically relates to a bag loading device for packaging bags. Background Art

[0002] In many fields, it is necessary to use packaging bags to package product materials. In the prior art, in the process of loading packaging bags, it is usually necessary to unfold the packaging bags and use a belt conveyor to transport them in place before realizing the bag loading function. However, the belt conveyor occupies a large area, which increases the overall floor area of the production line equipment. For example, the patent CN204057328U discloses a bag loading and conveying device for packaging bags, which includes a conveying bracket, a conveying motor, a conveyor belt, a bag pressing roller and other structures. This device uses the bag pressing roller to closely fit with the conveyor belt to achieve efficient bag loading and conveying of the packaging bags.

[0003] In addition, with the development of technology, some new bag loading devices for packaging bags have also emerged in the prior art. For example, the patent CN214608453U discloses an automatic bag loading device. When this device works, the feeding cylinder on the side of the bag suction mechanism close to the new bag moves upward towards the upper part of the new bag. After moving to the upper part of the new bag, the feeding cylinder moves downward and sucks the new bag through the first suction cup. Then, under the action of the bag suction mechanism, the new bag moves to the conveying component, and the conveying component transports the new bag to the discharge end of the rack. The first lifting cylinder drives the main cross bar and the corresponding first suction cup to move downward. The first suction cup sucks open the bag mouth of the new bag that has been transported in place. Then, the clamping arm rotates to the bag mouth part of the new bag, and the clamping claw at the end of the clamping claw cylinder extends into the bag mouth of the new bag. The piston rod of the clamping claw cylinder retracts to tighten the new bag. Then, the clamping arm rotates to turn the bag mouth of the new bag to an upward state. At the same time, under the action of the clamping claw cylinder, the clamping claw rotates to an open state to effectively expand the new bag, thereby realizing the loading operation. Although the automation level of this device has been improved, the overall structure is relatively complex. Especially in the process of expanding the new bag in cooperation with the subsequent loading, multiple components such as the clamping claw cylinder, the clamping arm, and the clamping claw need to cooperate. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a bag loading device for packaging bags, the bag mouth opening structure and action control of which are very simple, and the bag mouth of the packaging bag is directly buckled on the feeding port of the next process by the swing of the bag loading swing arm, thereby saving the conveying time of the packaging bag and improving the production efficiency.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] A bag loading device for a packaging bag, comprising a bag loading frame. A bag storage rack is provided at the lower part of the feeding side of the bag loading frame, and a bag transferring mechanism is provided in the middle. An opening mechanism is provided in the middle of the discharging side of the bag loading frame, and a bag loading mechanism is provided at the upper part. An opening station is provided inside the bag loading frame. The packaging bag on the uppermost layer in the bag storage rack is transferred to the opening station through the bag transferring mechanism. The opening mechanism includes a lower opening suction cup and a liftable upper opening suction cup. The lower side of the bag opening of the packaging bag at the opening station is adsorbed and fixed by the lower opening suction cup, and the upper side is adsorbed and moved open by the upper opening suction cup. The bag loading mechanism includes a rotatable bag loading swing arm, and a bag clamping element is provided at the free end of the bag loading swing arm. After the bag opening of the packaging bag at the opening station is opened, the upper and lower sides of the bag opening are respectively fixed by the corresponding bag clamping elements, and then the bag opening is swung upward by the bag loading swing arm and buckled at the feeding port of the next process.

[0007] The bag transferring mechanism includes a bag transferring support, a bag transferring sliding seat, a bag transferring driving cylinder, a bag transferring lifting cylinder and a bag transferring suction cup. The bag transferring support is fixed on the bag loading frame. The bag transferring driving cylinder and the bag transferring sliding seat are both arranged on the bag transferring support. The bag transferring sliding seat is slidably connected with the bag transferring support and is driven to move horizontally by the bag transferring driving cylinder. The bag transferring lifting cylinder is vertically fixed on the bag transferring sliding seat, and the lower end of the cylinder rod of the bag transferring lifting cylinder is fixedly connected with the bag transferring suction cup.

[0008] The bag transferring support includes a vertical mounting frame and a horizontal mounting frame. The vertical mounting frame is fixed on the bag loading frame, and the bag transferring driving cylinder and the bag transferring sliding seat are both arranged on the horizontal mounting frame.

[0009] The opening mechanism includes an upper suction cup cylinder, and the upper opening suction cup is driven to lift by the upper suction cup cylinder.

[0010] The upper suction cup cylinder is a rodless cylinder, and the upper opening suction cup is connected with the cylinder slider on the rodless cylinder through an upper suction cup pipe.

[0011] The lower opening suction cup is installed on a lower suction cup mounting seat through a lower suction cup pipe, and the lower suction cup mounting seat is driven to lift by a lower suction cup fine-tuning cylinder.

[0012] The bag loading mechanism includes a bag loading translation cylinder, a bag loading mounting frame, a bag loading translation frame and a bag loading swing arm cylinder. The bag loading mounting frame is fixedly arranged on the bag loading frame. The bag loading translation cylinder and the bag loading translation frame are both arranged on the bag loading mounting frame. The bag loading translation frame is slidably connected with the bag loading mounting frame and is driven to move horizontally by the bag loading translation cylinder. The rear end of the bag loading swing arm is hinged to the front end of the bag loading translation frame. The rear end of the bag loading swing arm cylinder is hinged to the lower side of the bag loading translation frame, and the front end is hinged to the lower side of the rear end of the bag loading swing arm.

[0013] A rear hinge seat for the upper bag is provided on the lower side of the upper bag translation frame. A front hinge seat for the upper bag is provided on the lower side of the rear end of the upper bag swing arm. The rear end of the upper bag swing arm cylinder is hinged to the rear hinge seat for the upper bag, and the front end is hinged to the front hinge seat for the upper bag.

[0014] The bag clamping element is arranged on the corresponding upper bag adjustment sliding seat, and the upper bag adjustment sliding seat is movably and adjustably arranged on the upper bag swing arm.

[0015] A bag storage lifting device is provided on the lower side of the bag storage rack, and moving rollers are provided at the lower end of the bag storage lifting device.

[0016] The advantages and positive effects of the present utility model are as follows:

[0017] 1. The present utility model uses the cooperation of the lower bag opening suction cup and the upper bag opening suction cup to realize the opening of the bag mouth of the packaging bag. Its structure and motion control are very simple. Moreover, the lower bag opening suction cup can be adjusted in height by a fine-tuning structure according to actual needs to ensure that it can adsorb the lower side of the bag mouth of the packaging bag, thereby ensuring the firmness of the bag mouth opening action.

[0018] 2. The present utility model directly uses the swing of the upper bag swing arm to convey the packaging bag to the next process, and directly docks the bag mouth of the packaging bag with the feeding port, thereby saving the upper bag conveying time of the packaging bag and improving the production efficiency.

[0019] 3. The distance between the bag clamping elements at the front end of the upper bag swing arm of the present utility model can be adjusted according to the bag mouth specifications of the packaging bag and other situations. And the upper bag mechanism is provided with an upper bag translation frame to adjust the position of the entire upper bag swing arm to ensure that it can accurately pick up the packaging bag at the bag opening station, and at the same time, it can also ensure that the bag mouth of the packaging bag is accurately buckled on the feeding port. The upper bag translation frame can also cooperate with the action to realize the transfer of the packaging bag, thereby improving the use flexibility and application range of the present utility model.

[0020] 4. The present utility model uses the bag transfer mechanism on the feeding side to automatically pick up the uppermost packaging bag from the bag storage rack and automatically transfer it to the bag opening station in the middle of the upper bag rack, uses the bag opening mechanism on the discharging side to automatically open the bag mouth of the packaging bag at the bag opening station, and then uses the upper bag mechanism to automatically buckle the packaging bag with the opened bag mouth on the feeding port of the next process. Therefore, the entire process of the present utility model can be automatically completed, which improves the automation level of the equipment, and all parts of the equipment are integrated on an upper bag rack, and the overall floor area of the equipment is small. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present utility model,

[0022] Figure 2 is Figure 1 an enlarged schematic diagram of the bag transfer mechanism and the bag opening mechanism in

[0023] Figure 3 For Figure 1 the A-direction view of the upper half of the present utility model,

[0024] Figure 4 For Figure 1 the enlarged schematic view of the bag clamping element,

[0025] Figure 5 the schematic view of the using state of the present utility model.

[0026] Among them, 1 is the upper bag rack, 101 is the bag opening station, 2 is the bag storage rack, 201 is the bag storage lifting device, 3 is the bag moving mechanism, 301 is the bag moving driving cylinder, 302 is the bag moving lifting cylinder, 303 is the bag moving suction cup, 304 is the bag moving support, 3041 is the vertical mounting frame, 3042 is the horizontal mounting frame, 305 is the bag moving slide, 3051 is the bag moving roller, 4 is the bag opening mechanism, 401 is the lower bag opening suction cup, 4011 is the lower suction cup fine-tuning cylinder, 4012 is the lower suction cup mounting seat, 4013 is the lower suction cup pipe, 402 is the upper suction cup cylinder, 4021 is the cylinder slider, 403 is the upper bag opening suction cup, 4031 is the upper suction cup pipe, 5 is the upper bag mechanism, 501 is the upper bag translation cylinder, 502 is the upper bag mounting frame, 503 is the upper bag translation frame, 504 is the upper bag swing arm cylinder, 505 is the upper bag swing arm, 5051 is the upper bag adjustment chute, 506 is the front hinge seat of the upper bag, 507 is the rear hinge seat of the upper bag, 508 is the bag clamping element, 5081 is the upper bag adjustment slide, 5082 is the upper bag fastening screw, 6 is the packaging bag, 7 is the feeding port. Specific embodiments

[0027] The present utility model will be further described in detail below in conjunction with the accompanying drawings.

[0028] As Figures 1 to 5As shown in the figure, the utility model includes an upper bag rack 1. A bag storage rack 2 is provided at the lower part of the feeding side of the upper bag rack 1, and a bag transfer mechanism 3 is provided in the middle part. An opening mechanism 4 is provided in the middle part of the discharging side of the upper bag rack 1, and an upper bagging mechanism 5 is provided at the upper part. An opening station 101 is arranged inside the upper bag rack 1. The bag transfer mechanism 3 is provided with a movable bag transfer suction cup 303. Packaging bags 6 are stacked layer by layer on the bag storage rack 2, and the uppermost packaging bag 6 is adsorbed and transferred to the opening station 101 by the bag transfer suction cup 303. The opening mechanism 4 includes a lower opening suction cup 401 and a liftable and movable upper opening suction cup 403. The lower side of the bag mouth of the packaging bag 6 at the opening station 101 is adsorbed and fixed by the lower opening suction cup 401, and the upper side is adsorbed and moved open by the upper opening suction cup 403. The upper bagging mechanism 5 includes a rotatable upper bagging swing arm 505, and a bag clamping element 508 is arranged at the end of the upper bagging swing arm 505. After the bag mouth of the packaging bag 6 at the opening station 101 is opened, the upper and lower sides of the bag mouth of the packaging bag 6 are respectively fixed by the corresponding bag clamping elements 508, and then as Figure 5 As shown in the figure, the upper bagging swing arm 505 swings upward so that the bag mouth of the packaging bag 6 is directly buckled at the feeding port 7 of the next process. First, the utility model uses the cooperation of the lower opening suction cup 401 and the upper opening suction cup 403 to realize the opening of the bag mouth of the packaging bag 6, and its structure and action control are very simple. Secondly, the utility model directly uses the swing of the upper bagging swing arm 505 to transfer the packaging bag 6 to the next process, and directly docks the bag mouth of the packaging bag 6 with the feeding port 7, thereby saving the bagging transfer time of the packaging bag and improving the production efficiency.

[0029] As Figures 1 to 3 As shown in the figure, in this embodiment, the bag transfer mechanism 3 includes a bag transfer support 304, a bag transfer sliding seat 305, a bag transfer driving cylinder 301 and a bag transfer lifting cylinder 302. The bag transfer support 304 is fixed on the upper bag rack 1. The bag transfer driving cylinder 301 and the bag transfer sliding seat 305 are both arranged on the bag transfer support 304. The bag transfer sliding seat 305 is slidably connected with the bag transfer support 304 and is driven to move horizontally by the bag transfer driving cylinder 301. The bag transfer lifting cylinder 302 is vertically fixed on the bag transfer sliding seat 305, and the lower end of the cylinder rod of the bag transfer lifting cylinder 302 is fixedly connected with the bag transfer suction cup 303. When the utility model works, the bag transfer driving cylinder 301 drives the bag transfer sliding seat 305 to retreat to the set position, and then the bag transfer lifting cylinder 302 drives the bag transfer suction cup 303 to descend to adsorb the uppermost packaging bag 6 on the bag storage rack 2. Then the bag transfer lifting cylinder 302 drives the bag transfer suction cup 303 to rise and separates the uppermost packaging bag 6 from other packaging bags 6. Then the bag transfer driving cylinder 301 drives the bag transfer sliding seat 305 to move forward to the set position so that the packaging bag 6 adsorbed by the bag transfer suction cup 303 moves above the opening station 101. Then the bag transfer lifting cylinder 302 drives the bag transfer suction cup 303 to descend to release the packaging bag 6 on the opening station 101.

[0030] As Figures 2 to 3 shown, in this embodiment, the bag transfer bracket 304 includes a vertical mounting bracket 3041 and a horizontal mounting bracket 3042. The vertical mounting bracket 3041 is fixed to the upper bag rack 1, and the bag transfer driving cylinder 301 and the bag transfer slide 305 are both arranged on the horizontal mounting bracket 3042.

[0031] As Figure 3 shown, in this embodiment, bag transfer rollers 3051 are arranged on both sides of the bag transfer slide 305. Roller slideways are arranged on the horizontal mounting bracket 3042 of the bag transfer bracket 304, and the bag transfer rollers 3051 are engaged with the corresponding side roller slideways to realize the sliding connection between the bag transfer slide 305 and the bag transfer bracket 304.

[0032] The bag opening mechanism 4 includes an upper suction cup cylinder 402, and the upper bag opening suction cup 403 is driven to move up and down by the upper suction cup cylinder 402. As Figures 2 to 3 shown, in this embodiment, the upper suction cup cylinder 402 is a rodless cylinder, which is a commercially available product. A cylinder slider 4021 is arranged on the rodless cylinder. And as Figure 3 shown, the upper bag opening suction cup 403 is connected to the cylinder slider 4021 through an upper suction cup pipe 4031 to realize lifting movement. A vacuum extraction port is arranged on the upper suction cup pipe 4031 and connected to a vacuum device to realize the adsorption function of the upper bag opening suction cup 403. This is a well-known technology in the art.

[0033] The lower bag opening suction cup 401 can adopt a fine-tuning structure according to actual needs. As Figure 3 shown, in this embodiment, the lower bag opening suction cup 401 is installed on a lower suction cup mounting seat 4012 through a lower suction cup pipe 4013. Similarly, a vacuum extraction port is arranged on the lower suction cup pipe 4013 and connected to a vacuum device. The lower suction cup mounting seat 4012 is driven to move up and down by a lower suction cup fine-tuning cylinder 4011 to finely adjust the height of the lower bag opening suction cup 401, so as to ensure that the lower bag opening suction cup 401 can adsorb the lower side of the bag mouth of the packaging bag 6.

[0034] As Figure 1As shown in the figure, in this embodiment, the upper bag mechanism 5 includes an upper bag translation cylinder 501, an upper bag mounting frame 502, an upper bag translation frame 503, and an upper bag swing arm cylinder 504. Among them, the upper bag mounting frame 502 is fixedly arranged on the upper bag machine frame 1. The upper bag translation cylinder 501 and the upper bag translation frame 503 are both arranged on the upper bag mounting frame 502. And the upper bag translation frame 503 is slidably connected to the upper bag mounting frame 502 and is driven by the upper bag translation cylinder 501 to move horizontally. The rear end of the upper bag swing arm 505 is hinged to the front end of the upper bag translation frame 503 through a hinge shaft. A rear upper bag hinge seat 507 is arranged on the lower side of the upper bag translation frame 503. A front upper bag hinge seat 506 is arranged on the lower side of the rear end of the upper bag swing arm 505. The rear end of the upper bag swing arm cylinder 504 is hinged to the rear upper bag hinge seat 507, and the front end is hinged to the front upper bag hinge seat 506. The upper bag swing arm 505 is driven to swing by the upper bag swing arm cylinder 504.

[0035] As Figure 1 and Figure 4 shown in the figure, in this embodiment, the distance between the bag clamping elements 508 can be adjusted according to actual needs. Among them, an upper bag adjustment chute 5051 with a T-shaped cross-section is arranged on the upper bag swing arm 505. The bag clamping elements 508 are arranged on corresponding upper bag adjustment sliding seats 5081. And a regulating hanging plate is arranged on one side of the upper bag adjustment sliding seat 5081 and is slidably hung on the upper bag swing arm 505. An upper bag fastening screw 5082 is arranged on the regulating hanging plate. An adjusting slider is arranged inside the upper bag adjustment chute 5051. And the upper bag fastening screw 5082 is inserted into the upper bag adjustment chute 5051 and is threadedly fixed to the corresponding adjusting slider. Loosen the upper bag fastening screw 5082 upward, and the regulating hanging plate can drive the upper bag adjustment sliding seat 5081 to move freely along the upper bag swing arm 505 to adjust the position, thereby adjusting the distance between the bag clamping elements 508. When the position of the upper bag adjustment sliding seat 5081 is determined, the operator then tightens the upper bag fastening screw 5082 downward again to cooperate with the corresponding adjusting slider to clamp and lock the position of the upper bag adjustment sliding seat 5081. In this way, as Figure 5 shown in the figure, the present utility model can change the distance between the two bag clamping elements 508 according to the size specification of the bag mouth of the packaging bag 6 and other situations, thereby improving the use flexibility and application range of the present utility model. The present utility model can also adopt other suitable structures for adjusting the distance between the bag clamping elements 508 according to actual needs.

[0036] In this embodiment, the bag clamping elements 508 adopt cylinder jaws, which is a well-known technology in the art and is a commercially available product. For example, the jaw cylinders of the German Festo brand can be adopted. The present utility model can also adopt other suitable structures for the bag clamping elements 508 according to actual needs.

[0037] As Figure 1As shown in the figure, a bag storage lifting device 201 is provided on the lower side of the bag storage rack 2. As the packaging bags 6 are picked up layer by layer, the bag storage lifting device 201 can cooperate to drive the bag storage rack 2 to rise, so as to ensure that the bag transfer mechanism 3 can always adsorb the uppermost packaging bag 6 on the bag storage rack 2. The bag storage lifting device 201 can adopt a suitable structure according to actual needs. For example, a scissor lifting mechanism in the patent of CN221319194U can be adopted. The lower end of the frame body of the bag storage lifting device 201 can be provided with moving rollers as needed. In this way, when all the packaging bags 6 on the bag storage rack 2 are picked up, the operator can directly push away the empty bag storage rack 2 and push in a new bag storage rack 2 filled with packaging bags 6.

[0038] The working principle of the present utility model is as follows:

[0039] As Figure 2 shown in the figure, the packaging bags 6 are stacked layer by layer on the bag storage rack 2. When the present utility model works, the bag transfer mechanism 3 is first started to transfer the uppermost packaging bag 6 on the bag storage rack 2 to the bag opening station 101 in the bag loading rack 1. Specifically: the bag transfer driving cylinder 301 in the bag transfer mechanism 3 drives the bag transfer sliding seat 305 to retreat to the set position, then the bag transfer lifting cylinder 302 drives the bag transfer suction cup 303 to descend to adsorb the uppermost packaging bag 6 on the bag storage rack 2, then the bag transfer lifting cylinder 302 drives the bag transfer suction cup 303 to rise to separate the uppermost packaging bag 6 from other packaging bags 6, then the bag transfer driving cylinder 301 drives the bag transfer sliding seat 305 to move forward to the set position so that the packaging bag 6 adsorbed by the bag transfer suction cup 303 moves above the bag opening station 101, and then the bag transfer lifting cylinder 302 drives the bag transfer suction cup 303 to descend to release the packaging bag 6 on the bag opening station 101.

[0040] Then the bag opening mechanism 4 is started to open the bag mouth of the packaging bag 6 on the bag opening station 101. Specifically: the lower side of the bag mouth of the packaging bag 6 on the bag opening station 101 is adsorbed and fixed by the lower bag opening suction cup 401, and the upper side is adsorbed and fixed by the upper bag opening suction cup 403, and the upper suction cup cylinder 402 drives the upper bag opening suction cup 403 to rise a set height to open the bag mouth of the packaging bag 6. In addition, when the present utility model works, as Figure 3 shown in the figure, the lower bag opening suction cup 401 can be finely adjusted by driving the lower suction cup fine adjustment cylinder 4011 to lift and lower to ensure that it can adsorb the lower side of the bag mouth of the packaging bag 6.

[0041] Then the upper bagging mechanism 5 is activated to pick up and transfer the packaging bag 6 with the bag opening opened to the feeding process, and directly fasten the bag opening onto the feeding port 7 of the feeding process during the transfer. Specifically: after the bag opening of the packaging bag 6 on the bag opening station 101 is opened, the upper bagging swing arm 505 in the upper bagging mechanism 5 is driven to fall by the upper bagging swing arm cylinder 504, and the bag clamping elements 508 at the front end of the upper bagging swing arm 505 respectively clamp and fix the upper side and the lower side of the bag opening of the packaging bag 6. Then the upper bagging swing arm 505 is driven to swing upward by the upper bagging swing arm cylinder 504. While feeding the packaging bag 6 into the next process, the bag opening of the packaging bag 6 can also be directly fastened onto the feeding port 7. Then the material can be input into the packaging bag 6 through the feeding port 7. Among them, as Figure 4 shown, the distance between the bag clamping elements 508 at the front end of the upper bagging swing arm 505 can be adjusted according to the bag opening specifications of the packaging bag 6 and other conditions to ensure that after the upper bagging swing arm 505 falls, the bag clamping elements 508 are exactly aligned with the corresponding side edges of the bag opening. Additionally, as Figure 1 shown, the upper bagging mechanism 5 is provided with an upper bagging translation frame 503 for adjusting the position of the entire upper bagging swing arm 505 to ensure that it can accurately pick up the packaging bag 6 on the bag opening station 101, and at the same time ensure that the bag opening of the packaging bag 6 is accurately fastened onto the feeding port 7. Moreover, the upper bagging translation frame 503 can also cooperate to realize the transfer of the packaging bag 6. Specifically: the upper bagging swing arm 505 is first driven to fall by the upper bagging swing arm cylinder 504 and kept in a vertical state. Then the upper bagging translation frame 503 retreats to the set position to enable the upper and lower sides of the bag opening of the packaging bag 6 to enter the corresponding bag clamping elements 508 respectively. Then the bag clamping elements 508 are activated to clamp. Then the upper bagging translation frame 503 moves forward to the set position. Finally, the upper bagging swing arm 505 swings upward to fasten the bag opening of the packaging bag 6 onto the feeding port 7.

Claims

1. A packaging bag loading device, characterized in that: The invention comprises a bag loading frame (1), wherein a bag storage frame (2) is provided at the lower part of the feeding side of the bag loading frame (1), and a bag transfer mechanism (3) is provided at the middle part, a bag opening mechanism (4) is provided at the middle part of the discharging side of the bag loading frame (1), and a bag loading mechanism (5) is provided at the upper part, a bag opening station (101) is provided inside the bag loading frame (1), and the uppermost packaging bag (6) in the bag storage frame (2) is transferred to the bag opening station (101) by the bag transfer mechanism (3), the bag opening mechanism (4) comprises a lower bag opening suction cup (401) and a liftable upper bag opening suction cup (403), and the bag opening station (101) is provided with a bag opening mechanism (5) at the upper part. The lower side of the bag opening of the packaging bag (6) is fixed by suction by the lower bag opening suction cup (401), and the upper side is opened by suction by the upper bag opening suction cup (403). The bag loading mechanism (5) includes a rotatable bag loading swing arm (505), and a bag clamping element (508) is provided at the free end of the bag loading swing arm (505). After the bag opening of the packaging bag (6) on the bag opening station (101) is opened, the upper and lower sides of the bag opening of the packaging bag (6) are fixed by corresponding bag clamping elements (508) respectively, and then the bag opening of the packaging bag (6) is swung upward by the bag loading swing arm (505) and is placed at the feeding port (7) of the next process.

2. The packaging bag loading device according to claim 1, characterized in that: The bag moving mechanism (3) comprises a bag moving support (304), a bag moving slide (305), a bag moving driving cylinder (301), a bag moving lifting cylinder (302) and a bag moving suction cup (303), wherein the bag moving support (304) is fixed on the bag loading frame (1), the bag moving driving cylinder (301) and the bag moving slide (305) are both arranged on the bag moving support (304), wherein the bag moving slide (305) is slidably connected to the bag moving support (304) and is driven to move horizontally by the bag moving driving cylinder (301), the bag moving lifting cylinder (302) is vertically fixed on the bag moving slide (305), and the lower end of the cylinder rod of the bag moving lifting cylinder (302) is fixedly connected to the bag moving suction cup (303).

3. The packaging bag loading device according to claim 2, characterized in that: The bag transfer support (304) comprises a vertical mounting frame (3041) and a horizontal mounting frame (3042), wherein the vertical mounting frame (3041) is fixed on the bag loading frame (1), and the bag transfer driving cylinder (301) and the bag transfer slide (305) are both arranged on the horizontal mounting frame (3042).

4. The packaging bag loading device according to claim 1, characterized in that: The bag opening mechanism (4) comprises an upper suction cup cylinder (402), and the upper bag opening suction cup (403) is driven to rise and fall by the upper suction cup cylinder (402).

5. The packaging bag loading device according to claim 4, characterized in that: The upper suction cup cylinder (402) is a rodless cylinder, and the upper bag opening suction cup (403) is connected to a cylinder slider (4021) on the rodless cylinder via an upper suction cup tube (4031).

6. The packaging bag loading device according to claim 1, characterized in that: The lower bag opening suction cup (401) is installed on a lower suction cup mounting seat (4012) via a lower suction cup tube (4013), and the lower suction cup mounting seat (4012) is driven to rise and fall via a lower suction cup fine-tuning cylinder (4011).

7. The packaging bag loading device according to claim 1, characterized in that: The bag loading mechanism (5) comprises a bag loading translation cylinder (501), a bag loading mounting frame (502), a bag loading translation frame (503) and a bag loading swing arm cylinder (504), wherein the bag loading mounting frame (502) is fixedly mounted on the bag loading frame (1), the bag loading translation cylinder (501) and the bag loading translation frame (503) are both mounted on the bag loading mounting frame (502), and the bag loading translation frame (503) is slidably connected to the bag loading mounting frame (502) and driven to move horizontally by the bag loading translation cylinder (501), the rear end of the bag loading swing arm (505) is hinged to the front end of the bag loading translation frame (503), the rear end of the bag loading swing arm cylinder (504) is hinged to the lower side of the bag loading translation frame (503), and the front end is hinged to the lower side of the rear end of the bag loading swing arm (505).

8. The packaging bag loading device according to claim 7, characterized in that: An upper bag rear hinge seat (507) is provided at the lower side of the upper bag translation frame (503), an upper bag front hinge seat (506) is provided at the lower side of the rear end of the upper bag swing arm (505), and the rear end of the upper bag swing arm cylinder (504) is hinged to the upper bag rear hinge seat (507), and the front end is hinged to the upper bag front hinge seat (506).

9. The packaging bag loading device according to claim 1, characterized in that: The bag clamping element (508) is arranged on the corresponding upper bag adjusting slide (5081), and the upper bag adjusting slide (5081) is movably and adjustably arranged on the upper bag swing arm (505).

10. The packaging bag loading device according to claim 1, characterized in that: A bag storage lifting device (201) is provided on the lower side of the bag storage rack (2), and a movable roller is provided at the lower end of the bag storage lifting device (201).

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