Automatic bag feeding device for a packaging machine

Abstract

This utility model discloses an automatic bag feeding device for a packaging machine, comprising a bag feeding platform with a first photoelectric switch; a bag bin on one side of the bag feeding platform, the bag bin comprising several parallel bag bin plates, the top of the bag bin plates being higher than the inner bottom of the bag feeding platform; a guide seam between adjacent bag bin plates; a transmission mechanism below the bag bin, with several sets of push rods on the transmission mechanism; when the push rods are perpendicular to the bag bin plates, the top of the push rods passes through the guide seam between adjacent bag bin plates; and a controller, the signal output terminal of the first photoelectric switch being connected to the controller signal, and the signal input terminal of the drive motor of the transmission mechanism being connected to the controller signal. This device has a simple structure, requiring no modification to the original packaging machine structure; it solves the problem of discontinuous packaging caused by machine stoppages during bag placement, automatically feeding bags, eliminating the need for frequent manual bag placement, reducing labor intensity and risk factors, and increasing packaging speed.

Description

Technical Field

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

[0002] The existing packaging machine has a bag feeding platform below the bag picking mechanism. When the packaging machine is running, the bag picking mechanism takes the packaging bag from the bag feeding platform. Then the packaging machine performs processes such as opening the packaging bag, receiving the material, and sealing it to complete the material packaging.

[0003] However, the existing bag supply platform simply holds a stack of packaging bags, storing a limited number of bags. When the number of bags on the platform decreases, it needs to be replenished promptly. Since the bag-picking mechanism has a fixed stroke, increasing the length of the bag supply platform to increase the number of bags it can hold is not feasible, and the packaging machine needs to be modified.

[0004] Therefore, currently, stacks of packaging bags are mostly replenished manually. For safety reasons, to avoid contact between the bag-retrieving mechanism and the human body, the packaging machine needs to be paused during bag replenishment. However, frequent machine stops and pauses affect the packaging speed and are labor-intensive. In addition, issues such as equipment operation safety and personnel operation safety must be considered. The existing manual bag replenishment method still has certain safety hazards. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic bag feeding device for a packaging machine. This device can automatically replenish packaging bags to the bag feeding platform without affecting the operation of the packaging machine and has a high safety factor.

[0006] This utility model is implemented by the following technical solution: An automatic bag feeding device for a packaging machine includes a bag feeding platform with a first photoelectric switch. A bag compartment is located on one side of the bag feeding platform, comprising several parallel bag compartment plates. The top of each bag compartment plate is higher than the inner bottom of the bag feeding platform, facilitating the dropping of packaging bags from the bag compartment plates into the bag feeding platform. A guide seam is provided between adjacent bag compartment plates. A transmission mechanism is located below the bag compartment, with several sets of push rods. When a push rod is perpendicular to a bag compartment plate, its tip passes through the guide seam between adjacent bag compartment plates, pushing the packaging bag in the running direction. The device also includes a controller. The signal output terminal of the first photoelectric switch is connected to the controller, and the signal input terminal of the drive motor of the transmission mechanism is connected to the controller. When the first photoelectric switch detects that the bag feeding platform is short of bags and needs replenishment, the controller, through signal transmission, controls the drive motor to operate, thereby driving the transmission mechanism and pushing the packaging bags on the bag compartment plates into the bag feeding platform.

[0007] Furthermore, the bag storage plate is a rectangular polished plate, which facilitates the movement of packaging bags; a guide slope is provided at the end of the bag storage plate near the bag supply platform.

[0008] Furthermore, a baffle is provided on each of the left and right sides of the bag compartment; the bottom of the baffle is provided with a support leg.

[0009] Furthermore, the transmission mechanism includes a drive motor, a reducer, a transmission chain, a drive shaft, and a driven shaft. The drive motor and the reducer are disposed on the outer side of the baffle. The input end of the reducer is connected to the output end of the drive motor, and the output end of the reducer is connected to the end of the drive shaft. The drive shaft and the driven shaft are disposed on the inner side of the baffle. A sprocket is fixedly mounted on the surface of both the drive shaft and the driven shaft, and the surface of the sprocket meshes with the transmission chain. The drive shaft is connected to the driven shaft via the sprocket and the transmission chain. The rotation of the transmission chain is achieved by controlling the rotation of the drive shaft through the drive motor and the reducer.

[0010] Furthermore, the distance between two adjacent sets of push rods is not less than the width of the packaging bag. Two adjacent sets of push rods, the baffle, and the bag storage plate together form a packaging bag storage compartment. A large number of packaging bags can be placed on the bag storage plate in advance. The automatic bag feeding of the device can be completed by turning on the equipment. If there are not enough packaging bags on the bag storage plate, the packaging bags can be placed directly on the bag storage plate by hand without placing them on the bag feeding platform. This avoids safety hazards and does not require stopping the packaging machine, thus improving work efficiency. Each set of push rods is fixed to the transmission chain by a connector.

[0011] Furthermore, the connector includes a connecting rod, both ends of which are fixed to the transmission chain; the bottom end of the push rod is fixed to the connecting rod, and the connection between the push rod and the connecting rod is located directly below the guide slot.

[0012] Furthermore, it also includes a frequency converter; the signal input terminal of the frequency converter is connected to the controller signal, and the signal output terminal of the frequency converter is connected to the drive motor signal. Through signal transmission, the frequency converter adjusts the speed of the drive motor, which is beneficial for adjusting the operating speed of the drive mechanism according to the actual situation of the workshop and efficiency requirements.

[0013] Furthermore, it also includes a second photoelectric switch and an audible and visual alarm; the second photoelectric switch is disposed on the inner side of the baffle; the audible and visual alarm is disposed on the baffle; the signal output terminal of the second photoelectric switch is connected to the controller signal, and the signal input terminal of the audible and visual alarm is connected to the controller signal. When the second photoelectric switch detects that there are no packaging bags in the bag compartment, the controller controls the audible and visual alarm to issue an audible and visual alert through signal transmission. After hearing or seeing this, the staff will replenish the bag compartment with packaging bags.

[0014] Beneficial effects: This utility model provides an automatic bag feeding device for packaging machines. It has a simple structure and does not require modification to the original packaging machine structure. It solves the problem of discontinuous packaging caused by machine stoppage when placing packaging bags. It can automatically feed bags, eliminating the problem of frequent manual bag placement, reducing manual labor intensity and risk factor, improving packaging speed, increasing production time, and increasing production capacity. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an automatic bag feeding device for a packaging machine (the bag feeding platform is not shown). Figure 2 A top-view structural diagram of an automatic bag feeding device for a packaging machine; Figure 3 A side view structural diagram of an automatic bag feeding device for a packaging machine; Figure 4 This is a schematic diagram of the controller signal transmission direction; Figure 5 This is a schematic diagram showing the usage status of an automatic bag feeding device for a packaging machine.

[0017] The attached diagram is described below: 1. Bag feeding platform; 11. First photoelectric switch; 2. Bag compartment; 21. Bag compartment plate; 22. Guide seam; 23. Guide slope; 3. Transmission mechanism; 31. Drive motor; 32. Reducer; 33. Transmission chain; 34. Drive shaft; 35. Driven shaft; 36. Sprocket; 37. Frequency converter; 4. Push rod; 41. Connecting rod; 5. Controller; 6. Baffle; 61. Support leg; 62. Second photoelectric switch; 63. Audible and visual alarm; 7. Fixed frame; 8. Packaging bag. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Example An automatic bag feeding device for a packaging machine, such as Figure 1-3 As shown, it includes a bag supply platform 1, on which a first photoelectric switch 11 is provided. In this embodiment, the first photoelectric switch 11 is located above the bag supply platform 1, and can monitor downward whether there are packaging bags inside the bag supply platform 1. Alternatively, the first photoelectric switch 11 can be located on the side wall of the bag supply platform 1 as needed to monitor the height of the packaging bags inside the bag supply platform 1.

[0020] A bag compartment 2 is provided on one side of the bag supply platform 1. The bag compartment 2 includes several parallel bag compartment plates 21. In this embodiment, there are three bag compartment plates 21, but two, four, or more can be set according to actual needs. The bag compartment plates 21 are rectangular polished plates. A guide slope 23 is provided at the end of the bag compartment plate 21 near the bag supply platform 1. The top of the bag compartment plate 21 is higher than the inner bottom of the bag supply platform 1, which facilitates the packaging bags to be pushed into the bag supply platform 1 by the bag compartment plate 21. A push seam 22 is provided between adjacent bag compartment plates 21. A baffle 6 is provided on the left and right sides of the bag compartment 2. A support leg 61 is provided at the bottom of the baffle 6. It also includes a second photoelectric switch 62 and an audible and visual alarm 63. The second photoelectric switch 62 is located on the inner side of the baffle 6 directly above the drive shaft 34. It can monitor downwards whether there are packaging bags on the bag compartment plate 21. The audible and visual alarm 63 is located on the baffle 6. In this embodiment, the audible and visual alarm 63 is fixed on the top of the baffle 6. It can also be fixed on the outer side of the baffle 6 as needed. A fixing frame 7 is provided at the end of the baffle 6 away from the bag supply platform 1. The end of the bag compartment plate 21 away from the bag supply platform 1 is fixed to the fixing frame 7, and the other end is fixed to the bag supply platform 1.

[0021] A transmission mechanism 3 is provided below the bag compartment 2, and several sets of push rods 4 are provided on the transmission mechanism 3; when the push rod 4 is perpendicular to the bag compartment plate 21, the top of the push rod 4 passes through the guide gap 22 between adjacent bag compartment plates 21. The transmission mechanism 3 includes a drive motor 31, a reducer 32, a transmission chain 33, a drive shaft 34, a driven shaft 35, and a frequency converter 37. The drive motor 31 and the reducer 32 are located on the outside of the baffle 6. The input end of the reducer 32 is connected to the output end of the drive motor 31, and the output end of the reducer 32 is connected to the end of the drive shaft 34. The drive shaft 34 and the driven shaft 35 are located on the inside of the baffle 6. Sprockets 36 are fixedly mounted on the surfaces of both the drive shaft 34 and the driven shaft 35. The surfaces of the sprockets 36 mesh with the transmission chain 33. The drive shaft 34 is connected to the driven shaft 35 via the sprockets 36 and the transmission chain 33. The transmission chain 33 is divided into an upper conveying section and a lower return section according to its running direction. The upper conveying section moves towards the bag feeding platform 1. The distance between two adjacent sets of push rods 4 is not less than the width of the packaging bag. Each set of push rods 4 is fixed to the transmission chain 33 by a connector and moves with the rotation of the transmission chain 33. The connector includes a connecting rod 41, both ends of which are fixed to the transmission chain 33 by bolts. The bottom end of the push rod 4 is welded to the connecting rod 41, and the connection between the push rod 4 and the connecting rod 41 is located directly below the guide slot 22. In this embodiment, a total of eight sets of push rods 4 are provided, each set of push rods 4 including two steel rods. The connecting rod 41 is parallel to the drive shaft 34 and the driven shaft 35. In addition, multiple support plates can be fixed between the two baffles 6. The support plates are set below the upper part of the transmission section of the transmission chain 33, and the bottom of the upper part of the conveyor belt is connected to the top of the support plate, so that the upper part of the conveyor belt will not fall downwards during operation.

[0022] It also includes controller 5, which can be a DCS control system, PLC controller, etc. For example... Figure 4 As shown, the signal output terminal of the first photoelectric switch 11 is connected to the signal of the controller 5, and the signal input terminal of the drive motor 31 is connected to the signal of the controller 5. The controller 5 can control the start and stop of the drive motor 31 according to the signal of the first photoelectric switch 11. The signal input terminal of the frequency converter 37 is connected to the signal of the controller 5, and the signal output terminal of the frequency converter 37 is connected to the signal of the drive motor 31. The required frequency conversion parameters can be input on the controller 5, and the speed of the drive motor 31 can be controlled by the signal of the frequency converter 37. The signal output terminal of the second photoelectric switch 62 is connected to the signal of the controller 5, and the signal input terminal of the audible and visual alarm 63 is connected to the signal of the controller 5. The controller 5 can control the start and stop of the audible and visual alarm 63 according to the signal of the second photoelectric switch 62.

[0023] When using, such as Figure 5As shown, the bag storage plate 21, baffle 6, and two adjacent sets of push rods 4 together form a bag storage compartment. A large number of bags 8 can be placed on the bag storage plate 21 in advance, that is, a stack of bags 8 is placed in each enclosed bag storage compartment. When the power is turned on, the bag picking mechanism of the packaging machine takes the bags from the bag supply platform 1. After running for a period of time, when the first photoelectric switch 11 detects that the bags 8 on the bag supply platform 1 are insufficient and need to be replenished, the controller 5 controls the drive motor 31 to run (the frequency conversion parameters are set in advance) through signal transmission, which drives the transmission mechanism 3 to run. The rotation of the transmission chain 33 drives the push rod 4 to move. The push rod 4 pushes the bags 8 in the bag compartment 2 forward, so that the stack of bags 8 on the bag storage plate 21 closest to the bag supply platform 1 is pushed into the bag supply platform 1. At this time, the first photoelectric switch 11 detects that there are bags 8 in the bag supply platform 1. Through signal transmission, the controller 5 controls the drive motor 31, which in turn stops the transmission mechanism 3.

[0024] When the first photoelectric switch 11 detects that there are no packaging bags in the bag feeding platform 1, the transmission mechanism 3 rotates again through signal transmission control, and the push rod 4 pushes the packaging bags 8 behind forward, repeating the cycle. If the second photoelectric switch 62 detects that there are not enough packaging bags 8 on the bag storage plate 21, the controller 5 controls the audible and visual alarm 63 to issue an audible and visual prompt through signal transmission. After hearing and seeing this, the staff will place the packaging bags 8 on the bag storage plate 21 to replenish the packaging bags 8 in a timely manner. This ensures the continuity of bag feeding and improves the working efficiency of the packaging machine.

[0025] Furthermore, the replenishment of packaging bags 8 is achieved by placing them directly on the bag storage plate 21, without needing to place them on the bag supply platform 1. This solves the problems of low work efficiency and safety hazards that previously required stopping the machine first and then manually placing the packaging bags 8 on the control platform 1.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic bag feeding device for a packaging machine, comprising a bag feeding platform, characterized in that, A first photoelectric switch is provided on the bag supply platform; a bag compartment is provided on one side of the bag supply platform, the bag compartment including several parallel bag compartment plates, the top of the bag compartment plates being higher than the inner bottom of the bag supply platform; a guide seam is provided between adjacent bag compartment plates; a transmission mechanism is provided below the bag compartment, the transmission mechanism being provided with several sets of push rods; when the push rod is perpendicular to the bag compartment plate, the top end of the push rod passes through the guide seam between adjacent bag compartment plates; a controller is also included, the signal output terminal of the first photoelectric switch is connected to the controller signal, and the signal input terminal of the drive motor of the transmission mechanism is connected to the controller signal.

2. The automatic bag feeding device for a packaging machine according to claim 1, characterized in that, The bag storage plate is a rectangular polished plate; a guide slope is provided at one end of the bag storage plate near the bag supply platform.

3. The automatic bag feeding device for a packaging machine according to claim 1, characterized in that, A baffle is provided on each of the left and right sides of the bag compartment; the bottom of the baffle is provided with a support leg.

4. The automatic bag feeding device for a packaging machine according to claim 3, characterized in that, The transmission mechanism includes a drive motor, a reducer, a transmission chain, a drive shaft, and a driven shaft. The drive motor and the reducer are located on the outside of the baffle. The input end of the reducer is connected to the output end of the drive motor, and the output end of the reducer is connected to the end of the drive shaft. The drive shaft and the driven shaft are located on the inside of the baffle. A sprocket is fixedly mounted on the surface of both the drive shaft and the driven shaft. The surface of the sprocket meshes with the transmission chain. The drive shaft is connected to the driven shaft via the sprocket and the transmission chain.

5. The automatic bag feeding device for a packaging machine according to claim 4, characterized in that, The distance between two adjacent sets of push rods is not less than the width of the packaging bag; each set of push rods is fixed to the transmission chain by a connector.

6. The automatic bag feeding device for a packaging machine according to claim 5, characterized in that, The connector includes a connecting rod, both ends of which are fixed to the transmission chain; the bottom end of the push rod is fixed to the connecting rod, and the connection between the push rod and the connecting rod is located directly below the guide slot.

7. An automatic bag feeding device for a packaging machine according to claim 4, characterized in that, It also includes a frequency converter; the signal input terminal of the frequency converter is connected to the signal of the controller, and the signal output terminal of the frequency converter is connected to the signal of the drive motor.

8. An automatic bag feeding device for a packaging machine according to claim 4, characterized in that, It also includes a second photoelectric switch and an audible and visual alarm; the second photoelectric switch is disposed on the inner side of the baffle; the audible and visual alarm is disposed on the baffle; the signal output terminal of the second photoelectric switch is connected to the controller signal, and the signal input terminal of the audible and visual alarm is connected to the controller signal.

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