Bag taking and feeding mechanism

Abstract

This utility model relates to a bag picking and feeding mechanism for packaging bags, including a frame. A chain conveyor mechanism is mounted on the frame. The chain conveyor mechanism has at least one clearance notch for the packaging bag to pass through. A holding plate for placing the packaging bag is located within the area enclosed by the chain conveyor mechanism. A bag picking mechanism is provided on the upper side of the frame to pick up the packaging bag. This bag picking mechanism passes through the clearance notch when it rotates to the upper side of the holding plate, adsorbing one end of the packaging bag and lifting it to the upper side of the chain conveyor. This mechanism facilitates the movement of packaging bags from the holding plate onto the chain conveyor mechanism and reduces the space occupied.

Description

Technical Field

[0001] This utility model relates to a bag-taking and bag-delivering mechanism for packaging bags. Background Technology

[0002] Fully automatic packaging machines can automatically pick up bags, open bags, fill bags, and seal bags. Currently, in fully automatic packaging machines, the bags are typically conveyed via a horizontal conveyor and then transferred to a vertical conveyor by a bag-picking mechanism before being sent to the next process. Since the bag-picking mechanism is usually located beside the horizontal conveyor, it occupies space, increasing the footprint of the fully automatic packaging machine. If the bag-picking mechanism could be located within the space enclosed by the vertical conveyor, it would help reduce the space occupied. Utility Model Content

[0003] The purpose of this utility model is to provide a packaging bag picking and delivering mechanism, which facilitates the movement of packaging bags from the holding plate to the chain conveyor mechanism and reduces the space occupied.

[0004] The technical solution of this utility model is as follows: a packaging bag picking and feeding mechanism, including a frame, a chain plate conveying mechanism is provided on the frame, the chain plate conveying mechanism is provided with at least one clearance notch for the packaging bag to pass through, a holding plate for placing the packaging bag is provided in the area enclosed by the chain plate conveying mechanism, and a bag picking mechanism for absorbing the packaging bag is provided on the upper side of the frame. The bag picking mechanism is used to pass through the clearance notch when it rotates to the upper side of the holding plate, absorb one end of the packaging bag and lift one end of the packaging bag to the upper side of the chain plate.

[0005] Furthermore, the chain conveying mechanism includes two longitudinally parallel transmission chains that are driven to rotate by a synchronization mechanism. A first bag feeding chain assembly and a second bag feeding chain assembly are installed between the two transmission chains. A first clearance notch and a second clearance notch are provided between the rear end of the first bag feeding chain assembly and the front end of the second bag feeding chain assembly, and between the front end of the first bag feeding chain assembly and the rear end of the second bag feeding chain assembly, respectively, for the bag picking mechanism to pass through.

[0006] Furthermore, the synchronization mechanism includes a drive shaft driven to rotate by a servo motor via a synchronous belt mechanism, with driving sprockets fixed on both sides of the drive shaft, and three driven sprockets installed on each transmission chain on the frame.

[0007] Furthermore, a connecting plate is installed between two adjacent links on each transmission chain, and a first crossbar is fixed on two adjacent connecting plates in a section between two transmission chains. A first flexible fabric is installed on the upper side of the first crossbars, and the first flexible fabric and the first crossbars cooperate to form a first bag feeding chain plate assembly.

[0008] Furthermore, in another section located between the two transmission chains, a second crossbar is fixed between two adjacent connecting plates on the left and right sides. A second flexible fabric is installed on the upper side of the second crossbars. The second flexible fabric and the second crossbars cooperate to form a second bag feeding chain plate assembly.

[0009] Furthermore, the bag-taking mechanism includes a mounting plate that is laterally disposed on the upper side of the bag-feeding mechanism and fixed to the frame. A first connecting rod and a second connecting rod are hinged to the lower side of the mounting plate. The lower end of the first connecting rod is hinged to the rear end of a forward-extending third connecting rod. A pair of suction cups are fixed to the front end of the third connecting rod. The lower end of the second connecting rod is hinged to the end of the third connecting rod near the first connecting rod. A first longitudinal cylinder that drives the first connecting rod to lift the suction cups is hinged to the lower side of the mounting plate away from the first connecting rod.

[0010] Furthermore, a pair of first connecting rods are hinged to the lower side of the mounting plate via a first hinge seat, and a pair of second connecting rods are hinged to the lower side of the mounting plate via a second hinge seat. A pair of third connecting rods are provided between the lower ends of the pair of first connecting rods and the pair of second connecting rods.

[0011] Furthermore, the telescopic rod of the first longitudinal cylinder is hinged to the upper part of the first connecting rod.

[0012] Furthermore, the frame is equipped with a lifting mechanism that drives the holding plate to rise.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. This mechanism places the placement platform for flat packaging within the chain conveyor mechanism, which can reduce the space occupied by the equipment.

[0015] 2. This mechanism works in conjunction with the bag-picking mechanism and the chain conveyor mechanism. After picking up the flat packaging bag by utilizing the clearance notch, the packaging bag is then transported to the next workstation by the rotation of the transmission chain.

[0016] 3. The lifting mechanism can raise the height of stacked packaging bags, making it easier for the suction cups to pick up the packaging bags and avoiding situations where the suction cups cannot pick up the packaging bags. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the chain plate conveyor mechanism of this utility model;

[0019] Figure 3 For the present utility model Figure 2 A magnified view of a portion of the image;

[0020] Figure 4 This is a rear view of the bag-taking mechanism of this utility model;

[0021] Figure 5 This is a side view of the bag-taking mechanism of this utility model before it takes a bag;

[0022] Figure 6 This is a side view of the bag-picking mechanism of this utility model after it has picked up a single packaging bag;

[0023] In the diagram: A - Packaging bag; B - Holding plate; B11 - Rotating shaft; B12 - Rotating crank; B13 - Swing rod; B14 - Guide rail; B15 - Slider; B16 - Slider fixing seat; B17 - Drive motor; B18 - Hinge seat; C - Bag picking mechanism; C10 - Mounting plate; C11 - First connecting rod; C12 - Second connecting rod; C13 - Third connecting rod; C14 - Suction cup; C15 - First longitudinal cylinder; C16 - First hinge seat; C17 - Second hinge seat; D - Chain plate. Conveying mechanism D10 - Transmission chain D11 - Servo motor D12 - Synchronous belt mechanism D13 - Drive shaft D14 - Drive sprocket D15 - Driven sprocket D16 - Connecting plate D17 - First crossbar D18 - First flexible fabric D19 - First bag feeding chain plate assembly D20 - Second crossbar D21 - Second flexible fabric D22 - Second bag feeding chain plate assembly D23 - First clearance notch D24 - Second clearance notch D25 - Sensor. Detailed Implementation

[0024] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0025] refer to Figures 1 to 6

[0026] A bag-picking and feeding mechanism includes a frame, on which a chain conveyor mechanism D is mounted. The chain conveyor has at least one clearance notch for the bag to pass through. A holding plate B for placing stacked bags A is located within the area enclosed by the chain conveyor. The bags on the holding plate are fed in by a bag-pushing mechanism. A bag-picking mechanism C is mounted on the upper side of the frame. This bag-picking mechanism passes through the clearance notch when it rotates to the upper side of the holding plate, adsorbing one end of the bag and lifting it to the upper side of the chain conveyor so that after the chain conveyor rotates again, the bag falls completely onto the chain conveyor.

[0027] In this embodiment, the chain conveying mechanism includes two longitudinally parallel transmission chains D10 driven to rotate by a synchronization mechanism. A first bag feeding chain plate assembly and a second bag feeding chain plate assembly are installed between the two transmission chains. A first clearance notch D23 and a second clearance notch D24 are provided between the rear end of the first bag feeding chain plate assembly and the front end of the second bag feeding chain plate assembly, and between the front end of the first bag feeding chain plate assembly and the rear end of the second bag feeding chain plate assembly, respectively, for the bag picking mechanism to pass through, so that the bag picking mechanism can pass through the first clearance notch or the second clearance notch to perform bag suction and bag picking actions.

[0028] In this embodiment, the synchronization mechanism includes a drive shaft D13 driven to rotate by a servo motor D11 via a synchronous belt mechanism D12. Both sides of the drive shaft are fixed with drive sprockets D14. Three driven sprockets D15 are installed on each transmission chain on the frame. The transmission chain is wound around the corresponding drive sprocket and the three driven sprockets, thereby driving the transmission chain to rotate through the servo motor.

[0029] In this embodiment, a connecting plate D16 is installed between two adjacent links on each transmission chain. The connecting plate is rotatably connected to the shaft of the link, facilitating the operation of the connecting plate at turns. A first crossbar D17 is fixed to two adjacent connecting plates in a section between two transmission chains. A first flexible fabric D18 is installed on the upper side of these first crossbars. The first flexible fabric and the first crossbars cooperate to form a first bag-feeding chain plate assembly D19.

[0030] In this embodiment, a second crossbar D20 is fixed between two adjacent connecting plates in another section between the two transmission chains. A second flexible fabric D21 is installed on the upper side of the second crossbars. The second flexible fabric and the second crossbars cooperate to form a second bag feeding chain plate assembly D22.

[0031] In this embodiment, the frame is equipped with a sensor D25 for detecting the first and second clearance gaps, so that the servo motor can be started and stopped by the industrial control computer.

[0032] In this embodiment, the bag-taking mechanism includes a mounting plate C10 horizontally disposed on the upper side of the bag-feeding mechanism and fixed to the frame. A first connecting rod C11 and a second connecting rod C12 are hinged to the lower side of the mounting plate. The lower end of the first connecting rod is hinged to the rear end of a forward-extending third connecting rod C13. A pair of suction cups C14 are fixed to the front end of the third connecting rod. The lower end of the second connecting rod is hinged to the end of the third connecting rod near the first connecting rod. A first longitudinal cylinder C15, which drives the first connecting rod to lift the suction cups, is hinged to the lower side of the mounting plate away from the first connecting rod. The extension rod of the first longitudinal cylinder is hinged to the upper part of the first connecting rod. See also... Figures 4 to 6 .

[0033] In this embodiment, to improve stability, a pair of first connecting rods are hinged to the lower side of the mounting plate via a first hinge seat C16, and a pair of second connecting rods are hinged to the lower side of the mounting plate via a second hinge seat C17. A pair of third connecting rods are provided between the lower ends of the pair of first connecting rods and the pair of second connecting rods.

[0034] In this embodiment, the frame is provided with a lifting mechanism for driving the holding plate to rise. The lifting mechanism can be a screw and nut mechanism, an electric cylinder mechanism, etc., for driving the holding plate to rise and fall.

[0035] Specifically, the lifting mechanism may include a guide rail slider mechanism mounted on the frame. The holding plate slides vertically with the frame via the guide rail slider mechanism. A rotating shaft B11, driven by a drive mechanism, is mounted on the frame. One end of a rotating crank B12 is radially fixed to the rotating shaft, and the other end of the crank is hinged to one end of a swing rod B13. A hinge seat B18 is fixed to the bottom surface of the holding plate, and the other end of the swing rod is hinged to the hinge seat. When the drive motor drives the rotating shaft to rotate clockwise, the rotating crank drives the rotating shaft to push the holding plate upward; conversely, when the rotating shaft rotates counterclockwise, it drives the holding plate downward. The drive motor is a servo motor or a synchronous motor to drive the rotating shaft to achieve forward and reverse rotation and control the rotation angle, so that for each rotation angle, the holding plate is lifted upward a certain distance, thus better cooperating with the bag-removing mechanism for bag removal.

[0036] In this embodiment, in order to guide the lifting and lowering of the holding plate, the guide rail slider mechanism includes guide rails B14 vertically fixed on both sides of the holding plate. Sliders B15, which are fixedly connected to the frame, are slidably connected to the guide rails. The sliders are fixedly connected to the frame via slider fixing seats B16, thereby realizing the connection between the sliders and the frame, so that the holding plate can move up and down along the guide rails.

[0037] In this embodiment, the driving mechanism is a drive motor B17 fixed on the frame, and the output shaft of the drive motor is connected to the rotating shaft via a reducer. Specifically, the output shaft of the reducer is coaxially connected to the rotating shaft via a coupling, thereby driving the rotating shaft to rotate. The two ends of the rotating shaft are rotatably connected to the frame via bearing seats, and the rotating shaft and the rotating crank are integrated, with the rotating crank located in the middle of the rotating shaft.

[0038] In this embodiment, the axis of the rotating shaft and the axis of the swing rod hinged to the hinge seat are not on the same vertical plane. That is, the hinge seat is not directly above the rotating shaft. Specifically, the hinge seat can be set in the center of the bottom surface of the holding plate, which helps to ensure the stability of the lifting.

[0039] Working principle: When the sensor detects the first or second crossbar, the servo motor stops rotating. At this time, the first or second clearance notch is located between the bag-picking mechanism and the holding plate. When the first clearance notch moves to the lower side of the bag-picking mechanism, the first longitudinal cylinder telescopic rod retracts. The first connecting rod, in conjunction with the second connecting rod, drives the lower end of the third connecting rod to tilt downwards and pass through the first clearance notch. The suction cup is vertically downwards, and the suction cup uses negative pressure to adsorb the front part of the topmost flat packaging bag. See [link to relevant documentation]. Figure 5 The first longitudinal cylinder extension rod extends, and the first connecting rod, in conjunction with the second connecting rod, drives the third connecting rod to rotate. The suction cup lifts the rear of the attached packaging bag backward and upward. (See below) Figure 6 The drive chain of the bag feeding mechanism rotates a certain distance forward, causing all the suction bags to fall onto the first bag feeding chain assembly. The suction cups disconnect, and the bags are laid out on the first bag feeding chain assembly. The drive chain continues to rotate a certain distance forward, conveying the bags to the next workstation. When the second clearance notch is located below the bag picking mechanism, the servo motor stops rotating again, and the bag picking mechanism picks up the next bag. As the number of stacked bags decreases, the lifting mechanism can gradually lift the holding plate upward so that the bag picking mechanism can pick up the bags.

[0040] If the terms "first" and "second" are used in the above description to define the components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of distinguishing the components in the description. Unless otherwise stated, the above terms have no special meaning.

[0041] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0042] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0043] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0044] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A packaging bag picking and feeding mechanism, comprising a frame, characterized in that, The frame is equipped with a chain conveyor mechanism. The chain conveyor mechanism has at least one clearance notch for the packaging bag to pass through. A holding plate for placing the packaging bag is provided in the area enclosed by the chain conveyor mechanism. A bag picking mechanism for picking up the packaging bag is provided on the upper side of the frame. The bag picking mechanism is used to pass through the clearance notch when it rotates to the upper side of the holding plate, to pick up one end of the packaging bag and lift one end of the packaging bag to the upper side of the chain conveyor.

2. The packaging bag picking and delivering mechanism according to claim 1, characterized in that, The chain conveyor mechanism includes two longitudinally parallel transmission chains that are driven to rotate by a synchronization mechanism. A first bag feeding chain assembly and a second bag feeding chain assembly are installed between the two transmission chains. A first clearance notch and a second clearance notch are provided between the rear end of the first bag feeding chain assembly and the front end of the second bag feeding chain assembly, and between the front end of the first bag feeding chain assembly and the rear end of the second bag feeding chain assembly, respectively, for the bag picking mechanism to pass through.

3. The packaging bag picking and delivering mechanism according to claim 2, characterized in that, The synchronization mechanism includes a drive shaft driven to rotate by a servo motor via a synchronous belt mechanism. Both sides of the drive shaft are fixed with driving sprockets, and three driven sprockets are installed on each transmission chain on the frame.

4. The packaging bag picking and delivering mechanism according to claim 2 or 3, characterized in that, Each drive chain has a connecting plate installed between two adjacent links. In a section between two drive chains, two adjacent connecting plates are fixed with first crossbars. A first flexible fabric is installed on the upper side of the first crossbars. The first flexible fabric and the first crossbars cooperate to form a first bag feeding chain plate assembly.

5. The packaging bag picking and delivering mechanism according to claim 4, characterized in that, In another section located between the two transmission chains, a second crossbar is fixed between two adjacent connecting plates on the left and right sides. A second flexible fabric is installed on the upper side of the second crossbars. The second flexible fabric and the second crossbars cooperate to form a second bag feeding chain plate assembly.

6. The packaging bag picking and delivering mechanism according to claim 1, 2, 3 or 5, characterized in that, The bag-taking mechanism includes a mounting plate horizontally disposed on the upper side of the bag-feeding mechanism and fixed to the frame. A first connecting rod and a second connecting rod are hinged to the lower side of the mounting plate. The lower end of the first connecting rod is hinged to the rear end of a forward-extending third connecting rod. A pair of suction cups are fixed to the front end of the third connecting rod. The lower end of the second connecting rod is hinged to the end of the third connecting rod near the first connecting rod. A first longitudinal cylinder that drives the first connecting rod to lift the suction cups is hinged to the lower side of the mounting plate away from the first connecting rod.

7. The packaging bag picking and delivering mechanism according to claim 6, characterized in that, The lower side of the mounting plate is hinged to a pair of first connecting rods via a first hinge seat, and the lower side of the mounting plate is hinged to a pair of second connecting rods via a second hinge seat. A pair of third connecting rods is provided between the lower ends of the pair of first connecting rods and the pair of second connecting rods.

8. The packaging bag picking and delivering mechanism according to claim 6, characterized in that, The telescopic rod of the first longitudinal cylinder is hinged to the upper part of the first connecting rod.

9. The packaging bag picking and delivering mechanism according to claim 1, characterized in that, The frame is equipped with a lifting mechanism that drives the holding plate to rise.

Images