A fully automatic bagging machine for ton bag packaging

Abstract

The present application relates to a kind of full-automatic bagging machine for ton bag, including roller conveyor, chain conveyor, empty bag transfer mechanism, weighing belt machine, transition belt machine, deviation rectification bag component, bag mouth cutting component, bag opening in and out component and bag supporting swing component, empty bag transfer mechanism is used to move empty ton bag on roller conveyor to weighing belt machine, empty bag transfer mechanism is fixed on transfer frame, and adjustable suction cup assembly is fixed below empty bag transfer mechanism, transfer frame is across roller conveyor and weighing belt machine, deviation rectification bag component is also provided on weighing belt machine, bag mouth cutting component is located between weighing belt machine and transition belt machine, transition belt machine one end is close to the setting of weighing belt machine, bag opening in and out component and bag supporting swing component are set to the other end of transition belt machine.Compared with prior art, the present application can realize the accurate control for the weight of ton bag itself while ensuring that material is not contaminated.

Description

Technical Field

[0001] This invention relates to the field of ton bag packaging, and in particular to a fully automatic bag loading machine for ton bag packaging. Background Technology

[0002] As ton bag packaging technology matures, more and more automated equipment is being used in packaging production. Many of these are automatic ton bag feeders, but most lack comprehensive functions, are inflexible in operation, and have a limited range of compatible ton bag sizes. Especially in high-tech industries such as lithium batteries, ton bag packaging requires strict precision and cleanliness standards; the inner bags used are made of aluminum foil, and the bag openings are initially sealed.

[0003] Existing bagging machines cannot accurately control the weight of the ton bag itself while ensuring that the material is not contaminated. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automatic bag-loading machine for ton bag packaging. By configuring a bag-cutting component, combined with a weighing belt conveyor, a transition belt conveyor, and a bag-pressing component, the ton bags can be accurately cut, thereby controlling the weight of the empty bags and ensuring that the material is not contaminated while accurately controlling the weight of the ton bags themselves.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A fully automatic bag loading machine for ton bag packaging includes a roller conveyor, a chain conveyor, an empty bag transfer mechanism, a weighing belt conveyor, a transition belt conveyor, a deviation correction and bag pressing component, a bag cutting component, a bag opening and retraction component, and a bag supporting and swinging component.

[0007] The empty bag transfer mechanism is used to transfer empty ton bags from the roller conveyor to the weighing belt conveyor. The empty bag transfer mechanism is fixed on the transfer frame, and an adjustable suction cup assembly is fixed below the empty bag transfer mechanism. The transfer frame spans across the roller conveyor and the weighing belt conveyor. The weighing belt conveyor is also equipped with a correction and bag pressing component. The bag cutting component is located between the weighing belt conveyor and the transition belt conveyor. One end of the transition belt conveyor is located close to the weighing belt conveyor, and the bag opening and retraction component and the bag supporting and swinging component are located at the other end of the transition belt conveyor.

[0008] The empty bag transfer mechanism includes a horizontal moving mechanism and a vertical moving mechanism, both of which are driven by servo motors.

[0009] The adjustable suction cup assembly includes a square tube support and a plurality of suction cups disposed on the square tube support, wherein the suction cups are connected to the pipes inside the square tube support.

[0010] The adjustable suction cup assembly also includes a negative pressure switch and a limit switch, with the limit switch located in the middle of the square tube bracket.

[0011] The adjustable suction cup assembly also includes a manual air valve. The square tube support includes a main shaft pipe and multiple branch pipes distributed on both sides of the main shaft pipe. The manual air valve is located on the main shaft pipe, and the suction cup is located at the end of each branch pipe.

[0012] The weighing conveyor belt is fixed on the platform scale.

[0013] The correction and pressing bag component includes a flipping cylinder, a linear slide, a reciprocating drive cylinder, and a correction arm. The reciprocating drive cylinder is connected to the linear slide, and the correction arm is rotatably mounted on the linear slide and connected to the flipping cylinder.

[0014] There are two correction arms, which are arranged in parallel and the distance between them is greater than the width of the ton bag opening.

[0015] The bag cutting component includes a bag cutting frame, a bag pressing cylinder, a bag pressing plate, and a shearing head. The bag cutting frame is gantry-shaped, the bag pressing cylinder is mounted on the bag cutting frame, the bag pressing plate is mounted on the bag pressing cylinder, and the shearing head is mounted on the bag cutting frame via a shearing slide.

[0016] The suction cup is connected to the negative pressure fan via a stainless steel tube and a corrugated hose.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By configuring the bag-cutting component, combined with the weighing belt conveyor, the transition belt conveyor, and the correction and pressing bag component, the ton bag can be accurately cut, thereby controlling the weight of the empty bag and ensuring that the material is not contaminated while accurately controlling the weight of the ton bag itself.

[0019] 2. Compatible with various models of ton bags with aluminum foil inner bags and PE inner bags, with bag lengths ranging from 400mm to 1200mm.

[0020] 3. The manual air valve is used to control the negative pressure on and off of the suction cups at the front end. When the ton bag is short, the air valve can be closed and the ton bag can be lifted using only the suction cups at the rear end, making it highly versatile. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 Schematic diagram of the horizontal moving mechanism

[0023] Figure 3 This is a schematic diagram of a vertical lifting mechanism;

[0024] Figure 4 This is a schematic diagram of the adjustable suction cup component.

[0025] Figure 5 Schematic diagram of empty bag weighing and correction bag pressing section

[0026] Figure 6 This is a schematic diagram of the bag opening component;

[0027] Figure 7 A schematic diagram of the bag opening, forward and backward movement, and bag swing mechanism;

[0028] Figure 8 This is a diagram illustrating the stacking of ton bags.

[0029] Figure 9 This is a schematic diagram of the valve opening flipping process of the ton bag;

[0030] Figure 10 This is a front view schematic diagram of the present invention;

[0031] The components include: 1. Roller conveyor; 2. Ton bags and pallets; 3. Transfer frame; 4. Horizontal moving mechanism; 5. Adjustable suction cup assembly; 6. Vertical lifting mechanism; 7. Chain conveyor; 8. Weighing belt conveyor; 9. Straightening and pressing bag assembly; 10. Bag cutting assembly; 11. Bag opening and retraction assembly; 12. Bag supporting and swinging assembly; A1. Guide rail fixing frame; A2. Drive chain; A3. Cable drag chain; A4. Linear guide rail and slider; A5. Sliding fixing frame; A6. Servo geared motor; A7. Drive shaft; B1. Lifting column; B2. Rack; B3. Linear guide rail; B4. Cable drag chain; B5. Linear slider; B6. Fixing seat; B7. Servo geared motor; C1. Rear ventilation pipe; C2. Foamed silicone sealing ring; C3. Limit switch; C4. Negative pressure switch; C5. Manual air valve; C6. Front... Ventilation duct, D1, Platform scale bracket, D2, High-precision platform scale, D3, Weighing belt conveyor, D4, Ton bag, D5, Tilting cylinder, D6, Reciprocating drive cylinder, D7, Arc-shaped fixing frame, D8, Non-powered roller, D9, Correction swing arm, E1, Waste collection drawer, E2, Frame, E3, Protective cover, E4, Detection photoelectric sensor, E5, Bag opening cylinder, E6, Bag pressing plate, E7, Shearing head, E8, Linear slide, E9, Drawer guide rail, F1, Frame, F2, Upper suction cup assembly, F3, Upper suction cup drive cylinder, F4, Forward and backward drive cylinder, F5, Top linear guide rail, F6, Bag support swing fixing frame, F7, Cable chain, F8, Servo geared motor, F9, Detection photoelectric sensor, F10, Lower suction cup assembly, F11, Bag support swing arm, F12, Lower suction cup drive cylinder, F13, Vacuum generator. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0033] A fully automatic bagging machine for ton bag packaging, such as Figure 1 and Figure 10 As shown, it includes a roller conveyor 1, a chain conveyor 7, an empty bag transfer mechanism, a weighing belt conveyor 8, a transition belt conveyor, a deviation correction and bag pressing component 9, a bag cutting component 10, a bag opening and retraction component 11, and a bag supporting and swinging component 12.

[0034] The empty bag transfer mechanism is used to transfer empty ton bags from the roller conveyor 1 to the weighing belt conveyor 8. The empty bag transfer mechanism is fixed on the transfer frame 3, and an adjustable suction cup assembly 5 is fixed below the empty bag transfer mechanism. The suction cup is connected to the negative pressure fan through a stainless steel pipe and a corrugated hose. The transfer frame 3 spans across the roller conveyor 1 and the weighing belt conveyor 8. The weighing belt conveyor 8 is also equipped with a deviation correction and bag pressing component 9. The bag cutting component 10 is located between the weighing belt conveyor 8 and the transition belt conveyor. One end of the transition belt conveyor is located close to the weighing belt conveyor 8, and the bag opening and retraction component 11 and the bag supporting and swinging component 12 are located at the other end of the transition belt conveyor.

[0035] By configuring the bag-cutting component 10, combined with the weighing belt conveyor 8, the transition belt conveyor, and the correction and pressing bag component 9, the ton bag can be accurately cut, thereby controlling the weight of the empty bag and ensuring that the material is not contaminated while accurately controlling the weight of the ton bag itself.

[0036] like Figure 2 and Figure 3 As shown, the empty bag transfer mechanism includes a horizontal moving mechanism 4 and a vertical moving mechanism, both of which are driven by servo motors. The two servo motors control the horizontal movement and the vertical lifting motion, respectively. The horizontal movement is driven by a chain-driven slider on a linear guide rail, while the vertical lifting motion uses a rack and pinion structure. Together, these mechanisms deliver the ton bag to the precise position on the belt conveyor.

[0037] like Figure 4 As shown, the adjustable suction cup assembly 5 includes a square tube support and multiple suction cups mounted on the square tube support, with the suction cups connected to pipes within the square tube support. The adjustable suction cup assembly 5 also includes a negative pressure switch and a limit switch, with the limit switch located in the middle of the square tube support. The adjustable suction cup assembly 5 also includes a manual air valve. The square tube support includes a main spindle pipe and multiple branch pipes distributed on both sides of the main spindle pipe. The manual air valve is located on the main spindle pipe, and the suction cups are located at the ends of each branch pipe.

[0038] The limit switch detects whether the suction cup has reached the designated bag suction position. A negative pressure gauge is also installed to detect whether the negative pressure has been reached, thus determining whether the suction cup has successfully sucked up the bag. This embodiment uses a six-suction cup structure. A manual air valve controls the negative pressure on / off of the two front suction cups. When the ton bag is short, the air valve is closed, and only the four rear suction cups are needed to lift the ton bag. Foamed silicone rings are embedded in the suction cups; their soft texture enhances the sealing effect.

[0039] like Figure 5 As shown, the weighing belt conveyor 8 is fixed on the platform scale, which is a high-precision platform scale. Below the platform scale is the chain conveyor 7 for transporting empty pallets.

[0040] The roller conveyor 1 that transports ton bags and pallets 2 is lower than the frame of the fixed platform scale. When all the bags on a pallet are used up, the pallet can be transported out from the bottom of the frame and automatically collected and transported out at the automatic pallet collection station in front.

[0041] The bag-pressing and straightening component 9 includes a tilting cylinder, a linear slide, a reciprocating drive cylinder, and straightening arms. The reciprocating drive cylinder is connected to the linear slide, and the straightening arms are rotatably mounted on the linear slide and connected to the tilting cylinder. Two straightening arms are provided, arranged parallel to each other with a distance greater than the width of the ton bag opening. Additionally, non-powered rollers are provided to cooperate with the belt conveyor for flattening the ton bag. The tilting cylinder controls the downward swing of the two straightening arms, which, driven by the reciprocating cylinder, swing left and right along the linear guide rail, thereby correcting the bag opening to the center position.

[0042] like Figure 6 As shown, the bag cutting component 10 includes a bag cutting frame, a bag pressing cylinder, a bag pressing plate, and a shearing head. The bag cutting frame is gantry-shaped, the bag pressing cylinder is located on the bag cutting frame, the bag pressing plate is located on the bag pressing cylinder, and the shearing head is located on the bag cutting frame via a shearing slide.

[0043] The aforementioned weighing conveyor belt 8 is fixed on a high-precision platform scale. The conveyor belt can rotate in both directions. After the inner bag opening of the ton bag is cut off, it returns to the conveyor belt for weighing.

[0044] The aforementioned bag-cutting component 10 is driven by a linear slide to cut the shearing head of the cutting machine. The shearing head is equipped with a rapidly rotating circular cutter. As the cutter moves from right to left, it neatly cuts off the compressed bag opening. The cut-off bag edge is conveyed forward with the ton bag and carried into the drawer below.

[0045] like Figure 7 As shown, the opening action of the bag opening and retraction component 11 is similar to that of the prior art, but an inward and outward guide rail and a drive cylinder are added above it. The entire bag-supporting swing component 12 can move back and forth along the guide rail. This action can protect the suction cup from being scratched by the ton bag.

[0046] The working process for this application is as follows:

[0047] like Figure 8 As shown, the ton bags are folded and flattened at the factory and neatly placed on a pallet. Roller conveyor 1 transports the pallet carrying a stack of ton bags to the bag-retrieving position. When the sensor on the conveyor detects that the pallet has arrived, the empty bag transfer mechanism begins to retrieve the bags.

[0048] like Figure 9 As shown, the empty bag transfer mechanism then moves the suction cup component to directly above the ton bag on the tray, and then slowly descends until the limit switch in the middle of the suction cup is triggered, indicating that the suction cup has pressed against the ton bag. At this time, the negative pressure fan starts, and when the negative pressure switch detects the formation of negative pressure, it means that the bag has been firmly adsorbed onto the suction cup. Then the mechanism rises vertically to the set position, and then moves horizontally to the center of the weighing belt. During this process, the valve of the ton bag will naturally droop due to gravity. Then the weighing belt 8 starts forward, and the mechanism slowly descends. After the drooping ton bag valve comes into contact with the conveyor belt, it will be driven forward by friction until it is horizontal with the bag body. The absolute encoder of the servo motor can identify the travel coordinates. After reaching the end point, the negative pressure fan is turned off, the weighing belt 8 stops, and one empty bag transfer process is completed.

[0049] When the suction cup descends to the bag-retrieving position and there are no bags left on the pallet, the absolute encoder of the servo motor detects that the empty pallet height has been reached (the thickness of the ton bag is zero), and the negative pressure switch does not detect the formation of negative pressure after the negative pressure fan is turned on. The system determines that the pallet is empty. At this time, the transfer mechanism returns to the safe position, the roller conveyor 1 starts, and sends the empty pallet to the chain conveyor 7 at the rear end, which then sends it to the pallet collection warehouse. Then a new pallet of ton bags will continue to be conveyed to the bag-retrieving position.

[0050] After the ton bags are transferred, they are placed flat on the weighing conveyor belt 8. The ton bags may become skewed due to improper folding or other reasons. At this point, the valve opening needs to be centered. As shown in the diagram, the correction and bag-pressing component 9 spans across the weighing conveyor belt 8. Driven by the tilting cylinder, the two correction arms swing down to the belt surface, with the ton bag valve opening within their spacing. Then, the cylinder on the right drives the swing arm to reciprocate left and right, confining the ton bag valve opening within the center range of the swing amplitude. After correction, the swing arm returns to a horizontal position driven by the tilting cylinder.

[0051] During the aforementioned ton bag transfer process, the suction cups only hold the upper layer of the ton bag, while the lower layer hangs due to gravity. When placed back on the conveyor belt, the thickness of the ton bag increases and becomes uncontrollable. Therefore, the bag body needs to be flattened here to prevent the ton bag from rubbing against the bag pressing structure and the suction cups on the opening during transportation. The bag pressing function of the correction and pressing component 9 is passive. After correction, the weighing conveyor belt 8 transports the ton bag forward. When the ton bag passes through the bag pressing gantry, it is flattened by the pressure of the unpowered rollers on both sides and the arc-shaped fixing frame.

[0052] When the ton bag opening is conveyed to the bag cutting component 10, the photoelectric sensor below the fixed frame receives a signal, indicating that the valve opening edge is in place. At this time, the cylinder drives the bag pressing plate to descend and press the inner bag tightly. The shearing head equipped with a circular cutter moves from right to left under the drive of the linear slide, and the bag opening is neatly cut off. Then the shearing head retracts to the right to return to the initial position. The cut-off bag edge is carried forward with the ton bag and into the collection drawer below.

[0053] After the bag opening is cut, the weighing conveyor belt 8 rotates in reverse until the ton bag is completely on the conveyor belt. Then the conveyor belt stops, and the high-precision platform scale at the bottom weighs the ton bag. This weight will be deducted when the ton bag packaging machine is filling the material to achieve accurate control of the net filling weight.

[0054] After the weighed ton bag is conveyed forward to the opening position, the upper and lower suction cups extend simultaneously to press the bag opening shut. The vacuum generator operates, transferring negative pressure to the suction cups and firmly adhering to the upper and lower layers of the bag opening. Then, the upper suction cup retracts upward, changing the bag opening from a flat shape to a rectangular opening. The bag-supporting swing arm inserts downward into the valve port and expands to both sides, firmly fixing the valve port to it. Then, under the action of the cylinder, the bag-supporting swing component 12 moves forward along the top linear guide rail, dragging the ton bag forward a certain distance. At this time, the flipping mechanism flips upward again, preventing the ton bag body from rubbing against the upper suction cup.

[0055] The bag-loading process is basically the same as in existing technology: the bag-supporting swing arm flips from a vertical position to a horizontal position, bringing the ton bag directly below the packaging machine's feed pipe with its opening facing upwards. Once the packaging machine's feed pipe descends and inserts into the bag opening, the bag-clamping mechanism on it will fix the bag opening. At this point, the bag-supporting swing arm first retracts a short distance from both sides towards the center, then swings upwards at a certain angle to detach from the bag opening. Then, under the action of a cylinder, the bag-supporting swing component 12 moves backwards along the top linear guide rail to the starting point, and the bag-supporting swing arm swings downwards back to the starting position. This completes one bag-loading process.

Claims

1. A fully automatic bag-loading machine for ton bag packaging, characterized in that, This includes roller conveyors, chain conveyors, empty bag transfer mechanisms, weighing belt conveyors, transition belt conveyors, deviation correction and bag pressing components, bag cutting components, bag opening and retraction components, and bag supporting and swinging components. The empty bag transfer mechanism is used to transfer empty ton bags from the roller conveyor to the weighing belt conveyor. The empty ton bags are initially closed. The empty bag transfer mechanism is fixed on the transfer frame, and an adjustable suction cup assembly is fixed below the empty bag transfer mechanism. The transfer frame spans the roller conveyor and the weighing belt conveyor. The weighing belt conveyor is also equipped with a correction and bag pressing component. The bag cutting component is located between the weighing belt conveyor and the transition belt conveyor. One end of the transition belt conveyor is close to the weighing belt conveyor. The bag opening and retraction component and the bag supporting and swinging component are located at the other end of the transition belt conveyor. The valve part of the empty ton bag hangs down naturally due to gravity. After the hanging ton bag valve comes into contact with the weighing belt conveyor, it is driven forward by friction until it is horizontal with the bag body. The deviation correction and bag pressing component includes a tilting cylinder, a linear slide, a reciprocating drive cylinder, and a deviation correction arm. The reciprocating drive cylinder is connected to the linear slide, and the deviation correction arm is rotatably mounted on the linear slide and connected to the tilting cylinder. The deviation correction and bag pressing component spans across the weighing belt conveyor. Driven by the tilting cylinder, the two deviation correction arms swing down to the belt surface, and the ton bag valve opening is within their distance. The reciprocating drive cylinder drives the deviation correction arm to reciprocate, and the ton bag valve opening is constrained within the swing amplitude center range. The bag-cutting component includes a bag-cutting frame, a bag-pressing cylinder, a bag-pressing plate, and a shearing head. The bag-cutting frame is gantry-shaped. The bag-pressing cylinder is mounted on the bag-cutting frame, and the bag-pressing plate is mounted on the bag-pressing cylinder. The shearing head is mounted on the bag-cutting frame via a shearing slide. After the bag opening is cut, the weighing conveyor belt rotates in the opposite direction until the ton bag is completely on the conveyor belt. Then the conveyor belt stops, and the high-precision platform scale at the bottom weighs the ton bag to obtain the net weight.

2. The fully automatic bag-feeding machine for ton bag packaging according to claim 1, characterized in that, The empty bag transfer mechanism includes a horizontal moving mechanism and a vertical moving mechanism, both of which are driven by servo motors.

3. The fully automatic bag-feeding machine for ton bag packaging according to claim 1, characterized in that, The adjustable suction cup assembly includes a square tube support and a plurality of suction cups disposed on the square tube support, wherein the suction cups are connected to the pipes inside the square tube support.

4. The fully automatic bag-feeding machine for ton bag packaging according to claim 3, characterized in that, The adjustable suction cup assembly also includes a negative pressure switch and a limit switch, with the limit switch located in the middle of the square tube bracket.

5. A fully automatic bag-feeding machine for ton bag packaging according to claim 3, characterized in that, The adjustable suction cup assembly also includes a manual air valve. The square tube support includes a main shaft pipe and multiple branch pipes distributed on both sides of the main shaft pipe. The manual air valve is located on the main shaft pipe, and the suction cup is located at the end of each branch pipe.

6. The fully automatic bag-feeding machine for ton bag packaging according to claim 1, characterized in that, The weighing conveyor belt is fixed on the platform scale.

7. A fully automatic bag-feeding machine for ton bag packaging according to claim 1, characterized in that, There are two correction arms, which are arranged in parallel and the distance between them is greater than the width of the ton bag opening.

8. A fully automatic bag-feeding machine for ton bag packaging according to claim 1, characterized in that, The suction cup is connected to the negative pressure fan via a stainless steel tube and a corrugated hose.

Images