Automatic bag feeding device

Abstract

The utility model discloses an automatic bag feeding device which is characterized in that when the automatic bag feeding device is used, packaging bags which are stacked in order are firstly placed in a stock bin, at the beginning, a first adsorption assembly on an overturning frame faces upwards and can adsorb the packaging bag at the bottom of the stock bin, and then a lifting driving assembly drives a lifting seat to move downwards (also drives the overturning frame to move downwards); in the downward movement process of the lifting seat, the overturning shaft rotates by 180 degrees under the guide of the reversing guide mechanism (the first adsorption assembly on the overturning frame drives the packaging bag to overturn together), so that when the lifting seat descends to the lowest position, the first adsorption assembly faces downwards, adsorption of the first adsorption assembly is relieved at the moment, and then the packaging bag is overturned. And the packaging bags can fall onto the main conveying belt, and circulation is carried out in this way. In addition, lifting and overturning of the overturning frame can be driven by only one power (the lifting driving assembly), and the overturning device has the advantages of being simple in structure, low in cost and easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, specifically to an automatic bag feeding device. Background Technology

[0002] Our company has developed an automatic packaging machine with an automatic bag opening and folding mechanism. For specific technical details, please refer to the Chinese invention patent application publication document, publication number CN118047104A. However, this machine has the following drawbacks: the gusseted bag opening and feeding structure is overly complex and bulky. Therefore, our company organized its R&D personnel to research and develop an automatic bag feeding device with a simpler, more compact structure and smaller footprint. Utility Model Content

[0003] To address the shortcomings of existing packaging equipment mentioned above, such as large footprint and overly complex structure, the technical solution adopted by this utility model is as follows: An automatic bag feeding device is disclosed, which is used to transport packaging bags one by one to a main conveyor. The automatic bag feeding device includes: a bag feeding frame, a hopper for temporarily storing packaging bags, and a picking mechanism for picking up packaging bags one by one from the hopper and transferring them to the main conveyor. The hopper is set on the bag feeding frame and located directly above the main conveyor. The bottom of the hopper has an output port for packaging bags to pass through. The picking mechanism includes: a lifting seat, a flipping frame, and a lifting drive assembly. The lifting seat is slidably connected to the bag feeding frame. The lifting drive assembly is set on the bag feeding frame to drive the lifting seat to move up and down relative to the bag feeding frame. A flipping shaft is rotatably connected to the lifting seat. The flipping frame is connected to the flipping shaft. The flipping frame is provided with a first adsorption component for adsorbing packaging bags. A reversing guide mechanism is provided between the flipping shaft and the bag feeding frame to guide the flipping shaft to rotate when the lifting seat moves from top to bottom, thereby causing the first adsorption component on the flipping frame to flip from an upward state to a downward state.

[0004] As described above, the automatic bag feeding device includes a reversing guide mechanism comprising a guide block and a crank handle. The crank handle is connected to a flip shaft and can rotate with the flip shaft. The crank handle has a first sliding groove. The guide block is pivotally connected to the bag feeding frame. The guide block has a second sliding groove in which the flip shaft can slide smoothly. The second sliding groove includes an upper vertical section, an arc-shaped guide section, and a lower vertical section that are connected in sequence. The guide block has a sliding column that can slide within the first sliding groove. When the flip shaft moves from top to bottom with the lifting seat, the flip shaft can slide along the upper vertical section, the arc-shaped guide section, and the lower vertical section. When the flip shaft moves to the arc-shaped guide section, the flip shaft can drive the guide block to swing relative to the bag feeding frame. At the same time, the sliding column and the first sliding groove on the crank handle work together to drive the flip shaft to rotate.

[0005] In the automatic bag feeding device described above, the center lines of the upper vertical section, the lower vertical section, and the sliding column are collinear, and the center line of the first sliding groove intersects the axis of the flipping shaft.

[0006] As described above, the automatic bag feeding device includes a hopper comprising a left baffle, a right baffle, a front baffle, and a rear baffle. A storage space for temporarily storing packaging bags is provided between the left baffle, right baffle, front baffle, and rear baffle. The bottom of the storage space is provided with a support edge for supporting the edges of the packaging bags.

[0007] As described above, the automatic bag feeding device includes a lifting drive assembly comprising a first rack, a first gear, a second rack, and a second gear. The first rack and the second rack are both connected to a lifting base. The first gear is rotatably connected to the bag feeding frame and meshes with the first rack and the second gear. The second gear is rotatably connected to the bag feeding frame and meshes with the second rack and the first gear. The lifting base is equipped with a lifting motor that drives the second rack to rotate, thereby raising and lowering the lifting base.

[0008] As described above, the automatic bag feeding device includes a main conveying device comprising a conveying frame and a conveyor belt connected to the conveying frame. The conveying frame is provided with a negative pressure adsorption device that cooperates with the conveyor belt, and the conveyor belt is provided with a plurality of adsorption holes that cooperate with the negative pressure adsorption device to adsorb the packaging bag onto the conveyor belt.

[0009] The beneficial effects of this utility model are:

[0010] 1. When using the automatic bag feeding device, the neatly stacked packaging bags are first placed in the hopper. Initially, the first suction component on the tilting frame faces upward and suctions the packaging bag at the bottom of the hopper. Then, the lifting drive component drives the lifting seat downward (also moving the tilting frame downward). During the downward movement of the lifting seat, the tilting shaft rotates 180° under the guidance of the reversing guide mechanism (the first suction component on the tilting frame also tilts along with the packaging bag). This ensures that when the lifting seat reaches its lowest position, the first suction component faces downward, releasing its suction, and the packaging bag falls onto the main conveyor belt. This cycle repeats. Furthermore, only one power source (the lifting drive component) is needed to drive the lifting and tilting of the tilting frame, offering advantages such as simple structure, low cost, and easy maintenance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram showing the positional relationship between the automatic bag feeding device and the main conveying device of this utility model.

[0012] Figure 2 This is one of the structural schematic diagrams of the automatic bag feeding device of this utility model;

[0013] Figure 3 This is the second structural schematic diagram of the automatic bag feeding device of this utility model;

[0014] Figure 4 This is a schematic diagram of the automatic bag feeding device of this utility model, in which the lifting seat flips under the action of the reversing guide mechanism during the process of the flipping shaft flipping from top to bottom.

[0015] Figure 5 This is a schematic diagram of the main conveying device in the automatic bag sealing device of this utility model. Detailed Implementation

[0016] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0017] like Figures 1 to 5As shown in this embodiment, an automatic bag feeding device 2 is used to transport packaging bags 800 one by one to a main conveying device 1. The automatic bag feeding device 2 includes: a bag feeding frame 21, a hopper 22 for temporarily storing packaging bags 800, and a sequential picking mechanism 23 for sequentially removing packaging bags 800 from the hopper 22 and transferring them to the main conveying device 1. The hopper 22 is disposed on the bag feeding frame 21 and located directly above the main conveying device 1. The bottom of the hopper 22 has an output port for packaging bags 800 to pass through. The sequential picking mechanism 23 includes: a lifting seat 231, a flipping frame 232, and a lifting drive assembly 233. The lifting seat 231 is slidably connected to the bag feeding frame 21. The lifting drive assembly 233 is set on the bag feeding frame 21 to drive the lifting seat 231 to move up and down relative to the bag feeding frame 21. A flipping shaft 234 is rotatably connected to the lifting seat 231. The flipping frame 232 is connected to the flipping shaft 234. The flipping frame 232 is provided with a first adsorption assembly 235 for adsorbing the packaging bag 800. A reversing guide mechanism 236 is provided between the flipping shaft 234 and the bag feeding frame 21 to guide the flipping shaft 234 to rotate when the lifting seat 231 moves from top to bottom, so as to drive the first adsorption assembly 235 on the flipping frame 232 to flip from the upward state to the downward state. When using the automatic bag feeding device, the neatly stacked packaging bags are first placed in the hopper. Initially, the first suction component on the tilting frame faces upward and can suction the packaging bag at the bottom of the hopper. Then, the lifting drive component drives the lifting seat downward (also moving the tilting frame downward). During the downward movement of the lifting seat, the tilting shaft 234 rotates 180° under the guidance of the reversing guide mechanism 236 (the first suction component 235 on the tilting frame 232 also tilts along with the packaging bag). This ensures that when the lifting seat reaches its lowest position, the first suction component 235 faces downward, at which point the first suction component 235 releases its suction, and the packaging bag can fall onto the main conveyor belt. This cycle repeats. Furthermore, only one power source (the lifting drive component 233) is needed to drive the lifting and tilting of the tilting frame, which has the advantages of simple structure, low cost, and easy maintenance.

[0018] In this embodiment, the reversing guide mechanism 236 includes: a guide block 2361 and a rocker arm 2362. The rocker arm 2362 is connected to the flip shaft 234 and can rotate with the flip shaft 234. The rocker arm 2362 is provided with a first sliding groove 23620. The guide block 2361 is pivotally connected to the bag feeding frame 21. The guide block 2361 is provided with a second sliding groove 23610 in which the flip shaft 234 can slide smoothly. The second sliding groove 23610 includes: an upper vertical section 236101, an arc-shaped guide section 236102, and a lower vertical section 236103 that are connected in sequence. The guide block 2361 is provided with a sliding column 23611 that can slide in the first sliding groove 23620; when the flip shaft 234 moves from top to bottom with the lifting seat 231, the flip shaft 234 can slide along the upper vertical section 236101, the arc-shaped guide section 236102 and the lower vertical section 236103, and when the flip shaft 234 moves to the arc-shaped guide section 236102, the flip shaft 234 can drive the guide block 2361 to swing relative to the bag feeding frame 21. At the same time, the sliding column 23611 and the first sliding groove 23620 on the rocker handle 2362 work together to drive the flip shaft 234 to rotate.

[0019] The working principle of the reversing guide mechanism 236 will now be described with reference to the accompanying drawings:

[0020] First, the lifting seat can only be raised and lowered in the vertical direction (it cannot move in the left or right direction), therefore the tilting shaft can also only be raised and lowered in the vertical direction. The tilting shaft and the tilting frame can rotate relative to the lifting seat.

[0021] Secondly, because the flipping shaft 234 can slide smoothly in the second groove 23610 on the guide block 2361, and the guide block 2361 is pivotally connected to the bag feeding frame 21, the guide block 2361 can swing relative to the bag feeding frame during the downward movement of the flipping shaft.

[0022] Third, the crank handle 2362 is connected to the flip shaft 234 and can rotate with the flip shaft 234. The crank handle 2362 is provided with a first sliding groove 23620, and the guide block 2361 is provided with a sliding column 23611 that can slide in the first sliding groove 23620. Therefore, when the flip shaft moves downward and passes through the arc-shaped guide section 236102, the sliding column 23611 and the first sliding groove 23620 on the crank handle 2362 work together to drive the crank handle 2362 to flip, thereby driving the flip shaft 234 to rotate, thereby driving the first adsorption component 235 on the flip frame 232 to flip from the upward state to the downward state.

[0023] In order to prevent the guide block 2361 from swinging relative to the bag feeding frame during the initial and final downward movements of the flipping shaft, in this embodiment, the center lines of the upper vertical section 236101, the lower vertical section 236103, and the sliding column 23611 are collinear, and the center line of the first slide groove 23620 intersects the axis of the flipping shaft 234.

[0024] In this embodiment, the hopper 22 includes a left baffle 221, a right baffle 222, a front stop 223, and a rear stop 224. A storage space 2202 for temporarily storing packaging bags 800 is provided between the left baffle 221, right baffle 222, front stop 223, and rear stop 224. The bottom of the storage space 2202 has a support edge 225 for supporting the edges of the packaging bags 800. The support edge 225 supports the edges of the packaging bags 800. Because the packaging bags are made of deformable plastic film, when the first adsorption component moves downwards, the packaging bags located at the bottom of the storage space 2202 can be pulled off from the support edge 225.

[0025] In this embodiment, the lifting drive assembly 233 includes: a first rack 2331, a first gear 2332, a second rack 2333, and a second gear 2334. Both the first rack 2331 and the second rack 2333 are connected to the lifting seat 231. The first gear 2332 is rotatably connected to the bag feeding frame 21 and meshes with both the first rack 2331 and the second gear 2334. The second gear 2334 is rotatably connected to the bag feeding frame 21 and meshes with both the second rack 2333 and the first gear 2332. The lifting seat 231 is equipped with a lifting motor 2335 that drives the second rack 2333 to rotate, thereby raising and lowering the lifting seat 231. This design allows for more stable lifting of the lifting seat. The negative pressure adsorption device can adsorb the packaging bags onto the conveyor belt 12, preventing misalignment and achieving precise delivery of the packaging bags.

[0026] The main conveying device 1 includes: a conveying frame 11 and a conveyor belt 12 connected to the conveying frame 11. The conveying frame 11 is provided with a negative pressure adsorption device 13 that cooperates with the conveyor belt 12. The conveyor belt 12 is provided with a plurality of adsorption holes 121 that cooperate with the negative pressure adsorption device 13 to adsorb the packaging bag 800 onto the conveyor belt 12.

[0027] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. An automatic bag feeding device (2) for conveying packaging bags (800) one by one onto a main conveying device (1), characterized in that, The automatic bag feeding device (2) includes: a bag feeding frame (21), a hopper (22) for temporarily storing packaging bags (800), and a sequential picking mechanism (23) for picking up packaging bags (800) one by one from the hopper (22) and transferring them to the main conveyor (1). The hopper (22) is set on the bag feeding frame (21) and located directly above the main conveyor (1). The bottom of the hopper (22) is provided with an output port through which packaging bags (800) can pass. The sequential picking mechanism (23) includes: a lifting seat (231), a flipping frame (232), and a lifting drive assembly (233). The lifting seat (231) is slidably connected to the bag feeding frame (21). A drive assembly (233) is mounted on a bag feeding frame (21) to drive a lifting seat (231) to move up and down relative to the bag feeding frame (21). A flipping shaft (234) is rotatably connected to the lifting seat (231). A flipping frame (232) is connected to the flipping shaft (234). A first adsorption assembly (235) for adsorbing packaging bags (800) is provided on the flipping frame (232). A reversing guide mechanism (236) is provided between the flipping shaft (234) and the bag feeding frame (21) to guide the flipping shaft (234) to rotate when the lifting seat (231) moves from top to bottom, so as to drive the first adsorption assembly (235) on the flipping frame (232) to flip from the upward state to the downward state.

2. The automatic bag feeding device according to claim 1, characterized in that, The reversing guide mechanism (236) includes: a guide block (2361) and a rocker arm (2362). The rocker arm (2362) is connected to the flip shaft (234) and can rotate with the flip shaft (234). The rocker arm (2362) is provided with a first sliding groove (23620). The guide block (2361) is pivotally connected to the bag feeding frame (21). The guide block (2361) is provided with a second sliding groove (23610) in which the flip shaft (234) can slide smoothly. The second sliding groove (23610) includes: an upper vertical section (236101), an arc-shaped guide section (236102), and a lower vertical section (236103) that are connected in sequence. The guide block (2361) is provided with a sliding column (23611) that can slide in the first sliding groove (23620); when the flip shaft (234) moves from top to bottom with the lifting seat (231), the flip shaft (234) can slide along the upper vertical section (236101), the arc-shaped guide section (236102) and the lower vertical section (236103), and when the flip shaft (234) moves to the arc-shaped guide section (236102), the flip shaft (234) can drive the guide block (2361) to swing relative to the bag feeding frame (21), and at the same time, the sliding column (23611) and the first sliding groove (23620) on the crank (2362) work together to drive the flip shaft (234) to rotate.

3. The automatic bag feeding device according to claim 2, characterized in that, The center lines of the upper vertical section (236101), the lower vertical section (236103), and the sliding column (23611) are collinear, and the center line of the first sliding groove (23620) intersects the axis of the flipping shaft (234).

4. An automatic bag feeding device according to claim 1, characterized in that, The hopper (22) includes: a left baffle (221), a right baffle (222), a front baffle (223) and a rear baffle (224). A storage space (2202) for temporarily storing packaging bags (800) is provided between the left baffle (221), the right baffle (222), the front baffle (223) and the rear baffle (224). The bottom of the storage space (2202) is provided with a support edge (225) for supporting the edge of the packaging bag (800).

5. An automatic bag feeding device according to claim 1, characterized in that, The lifting drive assembly (233) includes: a first rack (2331), a first gear (2332), a second rack (2333), and a second gear (2334). The first rack (2331) and the second rack (2333) are both connected to the lifting seat (231). The first gear (2332) is rotatably connected to the bag feeding frame (21) and meshes with the first rack (2331) and the second gear (2334). The second gear (2334) is rotatably connected to the bag feeding frame (21) and meshes with the second rack (2333) and the first gear (2332). The lifting seat (231) is provided with a lifting motor (2335) that drives the second rack (2333) to rotate so as to drive the lifting seat (231) to rise and fall.

6. An automatic bag feeding device according to claim 1, characterized in that, The main conveying device (1) includes: a conveying frame (11) and a conveyor belt (12) connected to the conveying frame (11). The conveying frame (11) is provided with a negative pressure adsorption device (13) that cooperates with the conveyor belt (12). The conveyor belt (12) is provided with a plurality of adsorption holes (121) that cooperate with the negative pressure adsorption device (13) to adsorb the packaging bag (800) onto the conveyor belt (12).

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