Tonne bag stacking device and method for stacking tonne bags

Abstract

The present invention relates to a stacking bag method of a ton bag stacking bag device, belonging to an automatic bag stacking equipment. The technical scheme adopted by the present invention is: the ton bag stacking bag device of the present invention comprises a bag storage box, which is open at the top and has a rectangular box shape inside; the ton bag conveyor belt is two transmission belts arranged with the same rollers and parallel to each other, with a distance in the middle, and the bag storage box is arranged below, the upper opening of the bag storage box is directly opposite to the empty position between the two conveyor belts, and the conveyor belt receives the flattened ton bag from one side; the flattening plate is arranged between the two parallel conveyor belts, and the flattening plate is arranged on the downward pressure driving mechanism, and the downward pressure driving structure drives the flattening plate to press the ton bag downward to pass through the two conveyor belts; the frame is installed with the conveyor belt and the downward pressure driving structure, and the bag storage box is placed in the frame. The advantage of the present invention is that the device can stack the ton bags that have been tied into boxes. The flattening method can achieve static electricity-free after the ton bags are stacked because there is no friction between the ton bags, and the electrostatic load of the parts in contact with the ton bags is controlled at the same time. For the later filling, it can ensure that the ton bags are filled without static electricity.

Description

Technical Field

[0001] The present invention relates to a stacking method for bulk bags by a bulk bag stacking device, and belongs to an automatic bag stacking device. Background Art

[0002] A bulk bag is a packaging bag for filling powder materials, and can fill hundreds of kilograms or even several tons at a time.

[0003] For filling powder materials, hanging bags operation is required for bulk bags. The manual hanging bag method has high reliability, but the filling environment is harsh. Currently, bag loading operations are usually carried out by machines. When loading bags, the bulk bags need to be stored regularly to facilitate continuous bag loading operations.

[0004] During the filling process of chemical products with low melting point, flammable and explosive properties, there are certain requirements for the storage form of bulk bags. For example, for nylon 6 chemical raw materials, during the filling process, it is not allowed for the bulk bags to generate static electricity or friction resulting in excessive local temperature, etc.

[0005] The bulk bags wound into rolls will generate friction during the bag taking process, which will threaten the filling environment of flammable and explosive chemical products such as nylon 6. Therefore, the storage of bulk bags needs to adopt the method of stacking them in piles, so that static electricity or excessive local temperature caused by friction will not be generated during the bag taking process. Summary of the Invention

[0006] To solve the problem of stacking bulk bags, the present invention provides a stacking method for a bulk bag stacking device, which realizes the stacking of bulk bags by mechanical equipment.

[0007] The technical solution adopted by the present invention is:

[0008] The bulk bag stacking device of the present invention

[0009] includes a bag storage box with an upper opening and a rectangular box shape inside;

[0010] A bulk bag conveyor belt is composed of two parallel conveyor belts with the same rollers, with a certain distance in the middle. The bag storage box is arranged below, and the upper opening of the bag storage box is directly opposite to the hole position between the two conveyor belts. The conveyor belt receives the flattened bulk bags from one side;

[0011] A flat pressing plate is arranged between the two parallel conveyor belts. The flat pressing plate is arranged on a downward pressing driving mechanism, and the downward pressing driving structure drives the flat pressing plate to press the bulk bag downward through the space between the two conveyor belts;

[0012] A frame is used to install the conveyor belt and the downward pressing driving structure, and the bag storage box is placed in the frame.

[0013] According to the above-mentioned bulk bag stacking and bagging device, it is characterized in that it further includes two opening and closing plates located below the conveyor belt. The outer sides of the two opening and closing plates are respectively hinged to the frame. The two opening and closing plates are butted directly below the cavity between the two conveyor belts, and the hinge shafts of the two opening and closing plates are parallel to each other. An opening and closing motor is connected to the hinge shaft at the end of the opening and closing plate, and the opening and closing motor drives the opening and closing plate to rotate downward.

[0014] According to the above-mentioned bulk bag stacking and bagging device, the frame is of a frame structure, and two parallel belt rollers are provided at the top. Two parallel narrow belts are provided on the two belt rollers, and the distance between the two narrow belts is greater than the width of the pressing plate; a opening and closing frame is provided below the belt roller, the hinge shaft of the opening and closing plate is arranged on the opening and closing frame, and the opening and closing motor is fixed on the outside of the opening and closing frame.

[0015] According to the above-mentioned bulk bag stacking and bagging device, a storage bag box conveyor is provided below the storage bag box. The storage bag box is placed on the storage bag box conveyor, and the storage bag box conveyor is fixed to the bottom of the frame.

[0016] According to the above-mentioned bulk bag stacking and bagging device, a gantry is provided in the middle of the frame, and the above-mentioned downward pressing drive mechanism is arranged in the middle of the gantry. The downward pressing drive mechanism is arranged vertically, and the moving end of the downward pressing drive mechanism is fixed with the flat pressing plate, and the flat pressing plate is arranged horizontally.

[0017] According to the above-mentioned bulk bag stacking and bagging device, both ends of the belt roller are belt rotating shafts, and the belt rotating shafts are arranged on the frame through bearing structures. A driven sprocket is provided on one side of the belt rotating shaft, a belt roller drive motor is arranged on the frame, a driving sprocket is arranged on the output shaft of the belt roller drive motor, and a transmission chain is arranged between the driving sprocket and the driven sprocket.

[0018] According to the above-mentioned bulk bag stacking and bagging device, the downward pressing drive mechanism is a cylinder, the pressing plate is made of insulating material, the cylinder body of the cylinder is fixed on the gantry, and the end of the extending rod of the cylinder is fixed with the pressing plate.

[0019] According to the above-mentioned bulk bag stacking and bagging device, it further includes a bulk bag flattening mechanism, which includes a flat supporting conveyor and a pressing roller. The flat supporting conveyor is connected to the bulk bag conveyor belt, the flat supporting conveyor is arranged at the same height as the conveyor belt, the pressing roller is at the end of the flat supporting conveyor, that is, at the connection with the conveyor belt, and the height between the pressing roller and the flat supporting conveyor is adjustable.

[0020] According to the bag stacking method of any of the above-mentioned bulk bag stacking and bagging devices, it includes the following steps:

[0021] 1) After the bulk bag is tied, it is placed flat on the flat supporting conveyor, and the pressing roller above the flat supporting conveyor flattens the bulk bag conveyor belt;

[0022] 2) The flat supporting conveyor transports the flattened conveyor belt to the bulk bag conveyor belt. The two narrow belts support the flattened conveyor belt, and at the same time, the bulk bag falls onto the two opening and closing plates due to its own weight;

[0023] 3) The two opening and closing plates are in a horizontal state, and the ton bag falls onto the two opening and closing plates through the two narrow conveyor belts.

[0024] 4) The two opening and closing plates rotate downward driven by the opening and closing motor, the distance between the two opening and closing plates becomes larger, and the ton bag falls into the bag storage box due to its own weight.

[0025] 5) The pressing drive mechanism drives the pressing plate to press down, passes through between the two narrow conveyor belts and the two opening and closing plates, and finally presses on the ton bag in the bag storage box to compact and flatten the ton bag, and then the pressing drive mechanism drives the pressing plate to rise.

[0026] 6) Repeat steps 1 - 5. When the ton bag is full in the bag storage box, the bag storage box conveyor transports the bag storage box out of the rack, places an empty bag storage box, and the bag storage box conveyor transports the empty bag storage box to directly below the two opening and closing plates.

[0027] The advantages of the present invention are as follows: This device can perform the work of stacking and boxing the ton bags with the strings tied. The flat stacking method can achieve no static electricity after the ton bags are stacked because there is no friction between the ton bags and the static load of the components in contact with the ton bags is controlled. The folded placement can also perform the bag loading operation through the bag loading structure during filling. Description of the Drawings

[0028] Figure 1 is the structure of the ton bag stacking and bagging device of the present invention Figure 1

[0029] Figure 2 is the side view of the ton bag stacking and bagging device of the present invention,

[0030] Figure 3 is the top view of the ton bag stacking and bagging device of the present invention,

[0031] Reference Signs:

[0032] 1 Ton bag conveyor belt, 11 Belt roller, 12 Belt roller rotating shaft, 13 Belt roller drive motor, 14 Driven sprocket, 15 Driving sprocket 2 Bag storage box, 21 Bag storage box conveyor, 3 Flat pressing plate, 31 Pressing drive mechanism, 32 Gantry, 4 Opening and closing plate, 41 Opening and closing motor, 42 Opening and closing frame, 5 Frame, 6 Flat supporting conveyor, 7 Pressing roller. Detailed Embodiment

[0033] The following further describes the specific structure of the present invention:

[0034] The device for stacking and bagging ton bags of the present invention includes a frame, a ton bag flattening mechanism, a ton bag conveyor belt 1, a switching plate 4, a bag storage box 2, and a box conveyor 21. The frame 5 in this device installs the conveyor belt and the downward pressing drive structure. The bag storage box 2 is placed in the frame 5 and is the main structure for supporting the entire equipment.

[0035] The structure of each component will be further described below. The storage bag box 2 is used for stacking and storing ton bags, and its structure It is in the shape of a rectangular box inside and has an opening at the upper part.

[0036] The ton bag conveyor belt 1 is composed of two narrow side drive belts arranged in parallel with the same rollers, with a certain distance in the middle. The bag storage box 2 is arranged below. The upper opening of the bag storage box 2 is directly opposite the cavity between the two conveyor belts. The conveyor belt receives the flattened ton bags from one side and then drops through the cavity between the two narrow side conveyor belts.

[0037] The flat pressing plate 3 is arranged between the two parallel conveyor belts. The flat pressing plate 3 is arranged on the downward pressing drive mechanism 31. The downward pressing drive structure drives the flat pressing plate 3 to press downwards, passing the ton bag through between the two conveyor belts and between the two switching plates, for flattening the ton bags in the bag storage box 2.

[0038] The two switching plates 4 are located below the conveyor belt. The outer sides of the two switching plates 4 are respectively hinged to the frame 5. The two switching plates 4 are butted directly below the cavity between the two conveyor belts, and the hinge shafts of the two switching plates 4 are parallel to each other. The switching plates 4 are connected to a switching motor 41 at the end hinge shaft, and the switching motor 41 drives the switching plates 4 to rotate downwards. A certain distance is reserved between the opposite edges of the two switching plates, and this distance is less than the width distance between the two narrow conveyor belts.

[0039] Further description of the frame structure: The frame 5 is a frame structure. There are two parallel belt rollers 11 at the top. Two parallel narrow belts are arranged on the two belt rollers 11. The distance between the two narrow belts is greater than the width of the pressing plate. The two ends of the belt roller 11 are belt rotating shafts, and the belt rotating shafts are arranged on the frame 5 through a bearing structure. There is a driven sprocket 14 on one side of the belt rotating shaft. A belt roller drive motor 13 is arranged on the frame 5. The output shaft of the belt roller drive motor 13 is provided with a driving sprocket 15, and a transmission chain is arranged between the driving sprocket 15 and the driven sprocket 14.

[0040] Below the belt roller 11, there is a switching frame 42. The hinge shaft of the switching plate 4 is arranged on the switching frame 42, and the switching motor 41 is fixed on the outside of the switching frame 42. The switching frame is a structure of two parallel crossbeams. The rotating shaft at the end of the switching plate passes through the switching frame to set the switching motor.

[0041] Below the bag storage box 2, there is a box conveyor 21. The bag storage box 2 is placed on the box conveyor 21, and the box conveyor 21 is fixed at the bottom of the frame 5.

[0042] In the middle of the frame 5, a gantry 32 is provided. The pressing drive mechanism 31 is arranged in the middle of the gantry 32. The pressing drive mechanism 31 is arranged vertically, and the moving end of the pressing drive mechanism 31 is fixed with the flat pressing plate 3, and the flat pressing plate 3 is arranged horizontally. The pressing drive mechanism 31 can be a cylinder or an electric push rod. When it is a cylinder, it is required to have a fast action speed and can quickly follow the ton bag falling into the storage bag box 2 due to its own weight and press the ton bag flat. Fast falling can avoid large folding of the ton bag.

[0043] The pressing plate is made of insulating material. The cylinder block of the cylinder is fixed on the gantry 32, and the end of the extending rod of the cylinder is fixed with the pressing plate. The insulating material can avoid static electricity generated by friction between the pressing plate and the ton bag.

[0044] Furthermore, a ton bag flattening mechanism is provided before the ton bag enters the ton bag conveyor belt 1 to pre-flatten the tied ton bag.

[0045] The ton bag flattening mechanism specifically includes a flat supporting conveyor 6 and a pressing roller. The flat supporting conveyor 6 is connected to the ton bag conveyor belt 1. The flat supporting conveyor 6 is arranged at the same height as the conveyor belt. The pressing roller is at the end of the flat supporting conveyor 6, that is, at the connection with the conveyor belt, and the height between the pressing roller and the flat supporting conveyor 6 is adjustable.

[0046] Through the ton bag flattening mechanism, the tied ton bag is first flattened. Through the combined action of the flat supporting conveyor 6 and the pressing roller, the gas in the ton bag is pressed out. At the same time, the flattened ton bag is beneficial to the stable posture during the next fall and avoids local folding.

[0047] Through the stacking method of the ton bag stacking and bagging device of the present invention, the following steps are included,

[0048] 1) After the ton bag is tied, it is placed flat on the flat supporting conveyor 6, and the pressing roller above the flat supporting conveyor 6 presses the ton bag conveyor flat;

[0049] 2) The flat supporting conveyor 6 transports the flattened conveyor belt to the ton bag conveyor belt 1. Two narrow conveyor belts support the flattened conveyor belt, and at the same time, the ton bag falls onto the two opening and closing plates 4 due to its own weight;

[0050] 3) The two opening and closing plates 4 are in a horizontal state, and the ton bag falls onto the two opening and closing plates 4 through the two narrow conveyor belts;

[0051] 4) The two opening and closing plates 4 rotate downward under the drive of the opening and closing motor 41, the distance between the two opening and closing plates 4 becomes larger, and the ton bag falls into the storage bag box 2 due to its own weight;

[0052] 5) The pressing drive mechanism 31 drives the pressing plate to press down, passes through between the two narrow conveyor belts and the two opening and closing plates 4, and finally presses on the ton bag in the storage bag box 2 to compact and flatten the ton bag, and the pressing drive mechanism 31 drives the pressing plate to rise;

[0053] 6) Repeat steps 1 - 5. When the bulk bag is full in the storage bag box 2, the box conveyor 21 conveys the storage bag box 2 out of the rack, places an empty storage bag box 2, and the box conveyor 21 conveys the empty storage bag box 2 to directly below the two opening and closing plates 4.

[0054] During this stacking process, if the bulk bags are individual and not tied together, proceed step by step according to the above steps. If there are tie ropes, the tie ropes are synchronously stacked on the bulk bags during the stacking of the bulk bags. Specifically, when the previous bulk bag is flattened in the bulk bags, the tie rope moves with the next bulk bag to the front of the bulk bag, and then the bulk bag drops, and the tie rope is synchronously below the bulk bag. The same applies to the next bulk bag.

Claims

1. A stacking device for bulk bags, characterized in that, it includes, a bag storage box (2) with an open upper part and a rectangular box shape inside; a box conveyor (21) is provided at the lower part of the bag storage box (2), and the bag storage box (2) is placed on the box conveyor (21), and the box conveyor (21) is fixed at the bottom of the frame (5); a bulk bag conveyor belt (1) is composed of two parallel conveyor belts with the same rollers, with an interval in the middle, and the bag storage box (2) is arranged below. The open upper part of the bag storage box (2) is directly opposite the hole between the two conveyor belts, and the conveyor belt receives the flattened bulk bags from one side. A flat pressing plate (3) is arranged between the two parallel conveyor belts. The flat pressing plate (3) is arranged on a downward pressing drive mechanism (31), and the downward pressing drive structure drives the flat pressing plate (3) to press down the bulk bag through between the two conveyor belts; the downward pressing drive mechanism (31) is a cylinder, the pressing plate is made of insulating material, the cylinder body of the cylinder is fixed on the gantry (32), and the end of the extending rod of the cylinder is fixed to the pressing plate. A frame (5) mounts the conveyor belt and the downward pressing drive structure, and the bag storage box (2) is placed in the frame (5); a gantry (32) is provided in the middle of the frame (5), the downward pressing drive mechanism (31) is arranged in the middle of the gantry (32), the downward pressing drive mechanism (31) is arranged vertically, the moving end of the downward pressing drive mechanism (31) is fixed to the flat pressing plate (3), and the flat pressing plate (3) is arranged horizontally. The frame (5) is a frame structure, and two parallel belt rollers (11) are provided at the top. Two parallel narrow conveyor belts are arranged on the two belt rollers (11), and the distance between the two narrow conveyor belts is greater than the width of the pressing plate; an opening and closing frame (42) is provided below the belt roller (11), the hinge shaft of the opening and closing plate (4) is arranged on the opening and closing frame (42), and the opening and closing motor (41) is fixed on the outside of the opening and closing frame (42). Both ends of the belt roller (11) are belt rotating shafts, and the belt rotating shafts are arranged on the frame (5) through bearing structures. A driven sprocket (14) is provided on one side of the belt rotating shaft, a belt roller drive motor (13) is arranged on the frame (5), a driving sprocket (15) is arranged on the output shaft of the belt roller drive motor (13), and a transmission chain is arranged between the driving sprocket (15) and the driven sprocket (14). It further includes two opening and closing plates (4) below the conveyor belt. The outer sides of the two opening and closing plates (4) are respectively hinged to the frame (5). The two opening and closing plates (4) are butted directly below the hole between the two conveyor belts, and the hinge shafts of the two opening and closing plates (4) are parallel to each other. The opening and closing plates (4) are connected to the opening and closing motor (41) at the end hinge shaft, and the opening and closing motor (41) drives the opening and closing plates (4) to rotate downward. It further includes a bulk bag flattening mechanism, including a flat supporting conveyor (6) and a pressing roller. The flat supporting conveyor (6) is connected to the bulk bag conveyor belt (1), the flat supporting conveyor (6) is arranged at the same height as the conveyor belt, and the pressing roller is at the end of the flat supporting conveyor (6), that is, at the connection with the conveyor belt, and the height between the pressing roller and the flat supporting conveyor (6) is adjustable.

2. A stacking method for the stacking device for bulk bags according to claim 1, characterized in that, it includes the following steps, 1) After the ropes of the bulk bags are tied, they are placed flat on the flat belt conveyor (6), and the pressure roller above the flat belt conveyor (6) flattens the bulk bags on the conveyor; 2) The flat belt conveyor (6) transports the flattened conveyor belt to the bulk bag conveyor belt (1). Two narrow conveyor belts support the flattened conveyor belt, and at the same time, the bulk bags fall onto the two opening and closing plates (4) due to their own weight; 3) The two opening and closing plates (4) are in a horizontal state, and the bulk bags fall onto the two opening and closing plates (4) through the two narrow conveyor belts; 4) The two opening and closing plates (4) rotate downward driven by the opening and closing motor (41), the distance between the two opening and closing plates (4) becomes larger, and the bulk bags fall into the storage bin (2) due to their own weight; 5) The downward pressing drive mechanism (31) drives the pressing plate to press down, passes through between the two narrow conveyor belts and the two opening and closing plates (4), and finally presses on the bulk bags in the storage bin (2) to compact and flatten the bulk bags. Then the downward pressing drive mechanism (31) drives the pressing plate to rise; Repeat steps 1)-5). When the bulk bags are full in the storage bin (2), the bin conveyor (21) transports the storage bin (2) out of the rack, places an empty storage bin (2), and the bin conveyor (21) transports the empty storage bin (2) to directly below the two opening and closing plates (4). The bin conveyor (21) transports the storage bin (2) out of the rack, places an empty storage bin (2), and the bin conveyor (21) transports the empty storage bin (2) to directly below the two opening and closing plates (4).

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